Workshop heating is a workplace safety control as much as a comfort question. Australian workplaces have an obligation under the Safe Work Australia Code of Practice: Managing the Work Environment and Facilities to maintain workplace temperatures between roughly 14-28°C, depending on the work being done. Productivity, error rates, and cold-related injury all worsen rapidly when workshop temperature drops below 12°C. The right industrial heating solution — diesel, gas, electric, radiant, or forced-air convection — depends on workshop size, climate, ventilation capacity, electrical supply, and a critical safety consideration: whether combustion exhaust is vented outside or released into the workshop.

This is a reference guide. AIMS does not currently stock industrial heating product as a retail line, but we source the full industrial heating category — diesel/electric/gas radiant heaters, diesel/electric/gas space heaters, indirect-fired diesel heaters for sealed workshops, and Australian-manufactured portable electric blower heaters — through our industrial supplier network. Contact us on (02) 9773 0122 with your workshop dimensions, climate zone, electrical/fuel supply, and ventilation arrangement, and our team will quote and assist with selection. This guide is companion content to our Industrial Cooling Guide, completing the workshop climate-control reference pair.

Why workshop heating matters — workplace temperature, productivity, and the WHS duty

The Safe Work Australia Code of Practice: Managing the Work Environment and Facilities sets workplace thermal comfort as a WHS general duty. Practical guidance: maintain workshop temperatures around 16-24°C for general work, with the absolute minimum around 14°C for sedentary work and lower thresholds acceptable for active physical work. Cold workshops increase manual handling injury risk (cold muscles tear more easily), reduce manual dexterity (cold hands drop tools), slow assembly work, and compromise glue/sealant cure times.

The Australian climate makes workshop heating a real concern in southern states. A typical Melbourne, Hobart, Canberra, or Adelaide hills workshop sees 60-90 days per year below 14°C in winter. Even Sydney's inland west and the NSW Central Coast workshop belt drops below 10°C overnight in July-August. Without heating, productivity craters from June through September — and the safety injury rate rises measurably alongside.

Heating selection is not just about output capacity. It's a four-factor decision: (1) fuel type / energy source available at site, (2) heat delivery mechanism (radiant vs convection vs forced air), (3) ventilation/exhaust strategy (direct vs indirect fired), and (4) workshop layout and use pattern. Getting any of the four wrong creates either inadequate heating, runaway operating costs, or — most seriously — carbon monoxide exposure.

Industrial scope — and what we're explicitly not covering

This guide is tightly scoped to industrial workshop heating. Consumer heating — Bunnings portable electric column heaters, residential gas ducted heating (Brivis, Bonaire home), heat pumps and reverse-cycle air conditioning, RV/caravan diesel heaters (Webasto, Eberspacher) — is a different product category sold through different channels. Domestic and residential heating is well-served by appliance retailers and HVAC installers.

The seven industrial heating product categories this guide covers:

• Diesel space heaters — direct fired — combustion air + fuel mix inside heater, hot exhaust + warm air both released into workshop. Highest output per dollar but requires significant ventilation (large open-bay or outdoor only)
• Diesel space heaters — indirect fired — combustion sealed in chamber, exhaust ducted outside, only clean warm air enters workshop. Workshop standard for sealed/enclosed bays
• Gas space heaters (LPG and natural gas) — propane/LPG or natural gas combustion, direct or indirect fired variants, AS 3814 commercial certification required
• Gas radiant heaters — infrared/quartz radiant tube heaters, gas-fired, warms objects + people directly rather than heating air
• Electric space heaters — resistance + fan-forced electric heating, clean (no combustion fumes), but highest running cost
• Electric radiant heaters — infrared/quartz radiant, electric resistance, instant heat to objects/people, suitable for spot heating in cold workshops
• Diesel radiant heaters — specialty category, less common, used in outdoor industrial sites
• Portable electric blower heaters (Australian-made) — AU-manufactured specialty range, robust steel construction for industrial workshop use

Direct fired vs indirect fired — the critical workshop safety distinction

The single most important workshop heating safety concept is the difference between direct-fired and indirect-fired combustion heaters. Getting this wrong creates a carbon monoxide (CO) exposure hazard that has killed Australian workshop operators.

Aspect	Direct fired	Indirect fired
Combustion location	Open flame + exhaust in the heated airstream	Sealed combustion chamber, exhaust ducted outside
What enters the workshop	Hot air + combustion byproducts (CO, CO2, moisture, NOx)	Only clean warm air via heat exchanger
Ventilation requirement	Substantial — outdoor, well-ventilated, or open-bay only	Minimal — suitable for sealed/enclosed workshops
Efficiency	Very high (~99% — no exhaust heat loss)	Lower (~80% — exhaust heat ducted outside)
Workshop CO risk	HIGH — CO accumulates without ventilation	LOW — combustion gases never enter workshop
Moisture in workshop	High — burns produce water vapour	None — moisture vented with exhaust
Typical use case	Construction, agricultural, large open-bay, outdoor	Enclosed workshop, factory, automotive bay, sealed industrial space
Cost	Lower — simpler construction	Higher — heat exchanger + flue ducting

The rule: if your workshop is sealed or has limited ventilation, you need indirect-fired heating. No exceptions. A direct-fired diesel salamander or kerosene torpedo heater in an enclosed automotive bay or fabrication shop creates a serious CO accumulation hazard. The exhaust gases — including CO at lethal concentrations within hours — enter the workshop directly.

Workshop operator deaths from CO poisoning happen most commonly when a direct-fired heater runs overnight in a workshop where the operator has stayed late to finish work. The heater is rated for outdoor or large open-bay use; the workshop is enclosed; CO accumulates; the operator becomes drowsy, loses consciousness, and dies in their sleep.

If you're not certain whether your workshop is "sealed" or "ventilated enough": install a CO detector before you fire up any combustion heater, indirect-fired or not. Combustion heaters of all types produce some CO; the question is whether it exits the workshop or accumulates. CO detectors that alarm at 30-50 ppm are workshop-essential.

Diesel vs gas vs electric — the workshop fuel decision

The fuel decision is driven by site availability, workshop size, and running-cost tolerance. Each fuel type has clear strengths and weaknesses:

Fuel	Strengths	Weaknesses	Best for
Diesel	Highest heat output per dollar of fuel. Long unattended run times (40-80 hours per tank). Robust construction. Operates without external power if mechanical thermostat (some units)	Heavy, requires fuel handling and storage. Exhaust requires venting (direct fired) or flue ducting (indirect). Diesel storage compliance (AS 1940). Combustion byproducts	Large workshops, fabrication shops, construction sites, agricultural sheds, sites without gas reticulation
LPG (propane)	Clean-burning. Portable cylinders. Fast heat-up. Available at any site with cylinder delivery. AS/NZS 1596-compliant storage	Cylinder storage compliance. Cost per kWh higher than diesel. Cold-temperature cylinder freeze-off issues in winter	Medium workshops, sites without natural gas, hot work areas with good ventilation
Natural gas	Lowest running cost per kWh of any fuel. Continuous supply via reticulation. No fuel handling	Requires gas mains connection (limited workshop availability). Installation cost. AS 3814 commercial certification	Permanent workshops with gas reticulation, factories, large facilities
Electric	Cleanest (zero fumes, zero combustion byproducts). Safest for sealed workshops. Lowest install cost. No fuel storage or supply issues. Can be moved as needed	Highest running cost per kWh (3-5× gas/diesel). Heavy electrical load — large units need 3-phase 415V supply. Slower heat-up than combustion	Sealed workshops where combustion isn't safe, electronics workshops, paint mixing rooms, small bays, intermittent heating use

The forum-validated decision pattern for Australian workshops: diesel for large workshops (250+ m²) and outdoor industrial, gas (LPG or natural) for medium workshops (100-250 m²) when reticulation is available, electric for small or sealed workshops (under 100 m²) where running cost is acceptable.

Radiant vs convection vs forced air — how the heat reaches you

The heat-delivery mechanism matters as much as the fuel type. Three different physics drive three different workshop experiences:

Mechanism	How it works	What it heats	Energy efficiency	Best workshop scenario
Radiant (infrared)	Emits IR radiation that heats objects + people directly without heating intervening air	Workers, tools, work surfaces — not the air	Very high (no energy lost heating air that ventilates away)	Workshops with high ceilings, regular door opening, outdoor industrial bays, spot heating at a workstation
Convection (natural / fan-forced)	Heats air which rises and circulates	Workshop air mass (which then warms objects and people via convection)	Moderate (loses energy on ventilation + heat stratification)	Sealed insulated workshops, factories, medium spaces with consistent occupancy
Forced air (blower)	Combustion or electric resistance heats air, blown into workshop by fan	Workshop air mass — fast warm-up	Moderate-low (high airflow + ventilation loss)	Large open-bay workshops, fabrication shops, construction sites, fast-recovery heating

The key insight from workshop heating forums: if your workshop has high ceilings (4 m+), regular roller door opening, or significant air leakage, radiant infrared heating dramatically outperforms convection or forced-air systems. You're not heating air that escapes through the roller door — you're heating workers and tool surfaces directly. The energy savings can be 40-60% over convection heating in the same workshop.

If your workshop is sealed, well-insulated, and has consistent occupancy (e.g., enclosed assembly bay), convection or forced-air heating works well because air heating is retained in the space.

Diesel space heaters — workshop standard for large industrial sites

Diesel space heaters are the workshop heating workhorse for medium-to-large Australian industrial sites. The output range typically spans 18-300 kW, fuel consumption 1-15 L/hr depending on output, and run times 8-80 hours per tank.

Two construction types as decoded above: direct fired (cheaper, requires significant ventilation, outdoor or open-bay use) and indirect fired (more expensive, exhaust ducted outside, suitable for sealed workshops). For most Australian workshops the indirect-fired diesel space heater is the right call — and the Fanmaster industrial heating range carries both variants with full indirect-fired models suitable for sealed workshop use.

Typical workshop diesel space heater specifications:

• 30-50 kW output — small-to-medium workshop (100-200 m²), single-phase 240V, fuel consumption ~3-5 L/hr
• 80-110 kW output — large workshop (250-500 m²), single-phase 240V or 3-phase, ~7-10 L/hr
• 150-300 kW output — factory/construction site, 3-phase 415V, 13-25 L/hr

Critical sizing: a workshop loses heat to the outside continuously, and the heat loss rate depends on insulation, ceiling height, door usage, and outside temperature. As a rough sizing guide, allow 80-120 W per m² of workshop floor area for moderate insulation in temperate Australian climate. A 200 m² workshop in Melbourne typically needs 20-25 kW continuous heating capacity; specify 30-40 kW heater output to handle warm-up and cold-snap demand.

AIMS sources the full industrial diesel space heater range. Contact us with workshop dimensions, ceiling height, insulation level, climate zone, and whether you need direct-fired (open bay / outdoor) or indirect-fired (sealed workshop), and we'll quote.

Gas space heaters — fast heat for medium workshops with reticulated gas or LPG

Gas space heaters use natural gas (where reticulated) or LPG (cylinder supply) as fuel. The combustion is cleaner than diesel — water vapour and CO2 are the main byproducts, with much less particulate. Heat-up is fast: most gas space heaters reach full output within 1-2 minutes.

AS 3814 (Industrial and Commercial Gas-Fired Appliances) is the Australian Standard governing workshop gas heating installation, certification, and maintenance. Commercial-scale gas heating installations require a licensed gasfitter for connection, with annual servicing recommended. AS/NZS 1596 covers LPG storage on workshop sites — cylinder cage requirements, ventilation, separation from ignition sources, signage.

Gas radiant heaters — overhead-mounted infrared tube heaters — are particularly common in Australian fabrication shops and automotive workshops. The radiant tube heats and reaches red-hot temperature; the IR radiation warms workers and work surfaces below. Forum-validated heating cost from workshop operators using natural gas radiant heating in medium Australian workshops: very low monthly running cost relative to other heating methods, with very even heat distribution, no smell, and no air movement.

Gas vs diesel decision pattern: gas wins on cleanliness, fast heat-up, and natural-gas-reticulated workshops. Diesel wins on cost per kWh for large workshops without gas reticulation, on fuel storage flexibility (diesel doesn't need cylinder cage compliance), and on cold-temperature reliability (LPG cylinders can freeze off in extreme cold).

Electric space heaters and radiant heaters — clean, safe, expensive to run

Electric heating produces no combustion byproducts, no CO, no moisture, no exhaust. It's the safest workshop heating choice for sealed or poorly-ventilated spaces, and the lowest-cost equipment for small-to-medium workshops where install simplicity matters more than running cost.

Two main electric heater types in industrial use:

• Electric space heaters (resistance + fan-forced) — heating element (typically nichrome or ceramic) warmed by electric resistance, fan blows air across the element into the workshop. Fast heat-up, portable units 1.5-9 kW common, larger units 9-25 kW available
• Electric radiant/infrared heaters — quartz halogen, ceramic IR emitter, or radiant tube heating, electric resistance, emits IR radiation directly. Spot heating at workstations or workbenches, no air movement

The cost reality: electric workshop heating runs 3-5× more expensive per kWh delivered than gas or diesel. For a 200 m² workshop requiring 20-25 kW continuous heating in winter, electric running cost can be substantial. Australian commercial electricity tariffs make full-output electric heating several times more expensive per operating hour than equivalent diesel or gas heating. Over a winter season the cost difference can dominate the equipment purchase decision.

Where electric wins:

• Sealed workshops where combustion is unsafe — electronics, calibration, paint mixing rooms
• Small workshops under ~80 m² where the equipment cost difference dominates running cost over a 5-year lifecycle
• Intermittent use — workshops occupied only a few hours per day; running cost amortises differently
• Australian-made portable electric blower heater specialty — robust steel construction, AU manufacturing, suitable for construction sites, hire fleets, and rugged workshop use. Source through AIMS supplier network

Radiant infrared heaters — spot heating without heating the air

Radiant infrared heating is fundamentally different from space heating. Rather than warming the workshop air mass and relying on the air to warm workers and surfaces, IR radiation passes through the air (the air doesn't absorb much IR) and heats whatever it strikes directly. Workers feel warmth where the IR hits them; the cold workshop air around them stays cool.

This makes radiant infrared the high-efficiency choice for:

• High-ceiling workshops (4 m+) — convection heating wastes energy heating the ceiling space; radiant goes directly to floor-level workers
• Workshops with frequent roller door opening — every door cycle vents heated air; radiant warmth on workers stays with the workers
• Outdoor or semi-outdoor industrial bays — air heating impossible; radiant warms workers regardless of airflow
• Spot heating at workstations — single radiant unit aimed at a welder's bench warms the worker without heating the whole workshop
• Workshops with intermittent heating need — instant warmth when switched on, no warm-up delay

Three radiant heater fuel options: gas radiant (overhead tube heaters, common in larger workshops, AS 3814 commercial install), electric radiant (quartz IR, ceramic emitter, smaller and portable, simple install), diesel radiant (specialty for outdoor industrial sites).

The forum-validated insight from workshop operators using radiant: radiant heating doesn't feel like central heating. Workers feel warm on the side facing the radiant unit, cool on the side facing away. The workshop air remains cool — you can see your breath in winter, but you don't feel cold because the IR radiation hits you directly. Counterintuitive at first; very efficient in practice.

Australian-made portable electric blower heaters — specialty industrial range

The Australian industrial heating market has a dedicated AU-manufactured portable electric blower heater range. Robust steel construction, designed for daily industrial duty, suitable for hire fleets, construction sites, and rugged workshop use where consumer-tier electric heaters wouldn't survive a fortnight.

Typical Australian-made portable electric blower heater specifications: 9-15 kW output (3-phase 415V), 3-phase plug, integrated thermostat, robust steel housing, carry handles, often castor-mounted for site mobility. Suitable for workshop spot heating, construction site temporary heating, marquee/event heating, and similar applications.

AIMS sources the AU-made portable electric blower heater range through our supplier network. Contact us with the application — workshop, construction site, hire fleet, etc. — and we'll quote the right unit. AU-manufactured industrial heating equipment is often the right call when the heater needs to last 5-10 years of hard use; the steel construction and AU-spec components outlast consumer-grade equivalents significantly.

Heating + ventilation — the workshop interaction that catches people out

Workshop heating and workshop ventilation are not independent decisions. The interaction matters in three important ways:

1. Combustion heating consumes oxygen — direct-fired diesel, LPG, natural gas combustion needs oxygen. In a sealed workshop, oxygen levels drop measurably with sustained combustion heating. AS/NZS 1668.2:2024 requires minimum fresh-air rates (10 L/s/person, 15 L/s/person above 27°C) that must continue to apply when heating is running. Direct-fired combustion heating in an under-ventilated workshop creates oxygen depletion AND CO accumulation simultaneously.

2. Indirect-fired heating + AS/NZS 1668.2 fresh air = the standard combination. Indirect-fired heaters vent exhaust outside, so workshop air composition stays clean. Combined with the AS/NZS 1668.2 minimum fresh-air rate, the workshop achieves both thermal comfort and air-quality compliance. This is the standard workshop heating configuration.

3. Welding fume + heating = source capture matters even more. When workshop heating is running, the rising warm air mass tends to lift welding fume into the workers' breathing zone faster than in an unheated workshop. Source capture (welding fume extractor) becomes more important, not less, when heating is in use. See our Respirator & Dust Mask Guide for the PPE side and our Workshop Ventilation & Fume Extraction Guide for the source capture deep-dive.

Heating capacity sizing — how much kW does your workshop need?

Workshop heating capacity sizing depends on workshop volume, insulation level, climate, and warm-up requirement. As a working starting point for moderate-insulation workshops in temperate Australian climate (Sydney, Melbourne, Adelaide, Brisbane):

Workshop floor area	Typical heating load (continuous)	Recommended heater output (allows warm-up)	Typical fuel choice
Under 50 m² (single bay)	4-8 kW	9-15 kW	Electric (small, portable, sealed safety)
50-100 m² (small workshop)	8-15 kW	18-25 kW	Electric or gas, depending on running cost tolerance
100-200 m² (medium workshop)	15-25 kW	30-40 kW	Gas (natural or LPG) or indirect-fired diesel
200-400 m² (large workshop)	25-50 kW	50-80 kW	Indirect-fired diesel or natural gas radiant
400-800 m² (fabrication shop)	50-100 kW	110-150 kW	Diesel space heater or gas radiant tube system
800+ m² (factory)	100-200+ kW	200-300 kW or multiple smaller units	Multiple gas radiant or large diesel space heaters with ducting

Adjustments for non-standard conditions:

• Poor insulation (uninsulated steel-clad workshop): increase capacity by 30-50%
• High ceilings (5 m+): increase capacity by 20-30%, or switch to radiant infrared (efficiency gain)
• Frequent roller door opening (every 10-15 min): increase by 30-50%, or switch to radiant
• Cold climate (Tasmania, Victorian highlands, Snowy Mountains): increase by 20-40%
• Tropical north QLD/NT workshops: heating rarely needed; focus on dehumidification + ventilation instead

Electrical supply considerations for industrial heating

Heater type	Typical electrical supply	Notes
Electric portable (under 2.4 kW)	10A 240V single-phase (standard wall socket)	Limited to spot heating small bays
Electric portable (2.4-3.6 kW)	15A 240V single-phase	Most consumer electric heaters; medium spot heating
Electric industrial (5-9 kW)	20A or 32A single-phase, or 3-phase 415V	Workshop-scale electric heating; check workshop supply
Electric industrial (9-15 kW+)	3-phase 415V required	AU-made portable blower heaters in this range; needs 3-phase plug
Diesel/gas combustion heater (electric fan + ignition)	10-15A 240V single-phase for fan + ignition	Combustion provides the heat; electrical only powers fan and controls
Large industrial diesel/gas (50+ kW)	3-phase 415V for fan systems	Larger fan loads on bigger heaters; check unit spec

Workshop electrical supply is often the limiting factor for industrial heating selection. A workshop with only 10A wall sockets can't run a 9 kW electric heater. Before specifying any electric heating, check what power is available and whether dedicated 15A or 3-phase outlets exist.

Workshop heating safety — CO detectors, clearances, AS standards

Industrial heating safety covers three main risk categories:

1. Carbon monoxide (CO) exposure. Any combustion heater (diesel, LPG, natural gas) produces CO. The question is whether CO exits the workshop with exhaust (indirect fired) or accumulates inside (direct fired without adequate ventilation). Minimum control: CO detector with audible alarm at 30-50 ppm, located near the operator workstation. Direct-fired heaters in enclosed workshops are a documented cause of workshop operator fatalities — don't run them in sealed spaces.

2. Fire and clearance. Combustion heaters need clearance from flammable materials, walls, and ceiling. Manufacturer-specified minimum clearances typically 1-2 m from sides and front, 2-3 m from rear/exhaust. Radiant heaters (especially gas radiant tube heaters and electric quartz IR) need similar clearances — the IR radiation will ignite paper, fabric, and timber if directed at them at close range.

3. Fuel storage. Diesel fuel storage requires AS 1940 compliance (storage and handling of flammable and combustible liquids). LPG cylinder storage requires AS/NZS 1596 compliance (cylinder cage, ventilation, ignition source separation, signage). Natural gas requires licensed gasfitter installation per AS 3814 and ongoing servicing.

Additional safety requirements:

• AS/NZS 60335-1 — household and similar electrical appliances safety (covers electric workshop heaters)
• AS/NZS 3760 — in-service inspection and testing of electrical equipment (test-and-tag for portable electric heaters 12-monthly minimum)
• AS/NZS 1596 — LP Gas storage (cylinder cage compliance for LPG-fired workshop heaters)
• AS 3814 — industrial and commercial gas-fired appliances (gasfitter installation + annual servicing)
• WHS Regulation 49 — atmospheric contaminants (limits on CO and other workshop air contaminants)

Hire vs buy — when each makes sense for industrial heating

Industrial heating equipment is one of the few categories where hire often makes more sense than purchase. The reasons:

• Seasonal use — most Australian workshops need heating 60-120 days per year. Annualised cost-of-ownership for owned equipment is higher than hire when use is seasonal
• Capital efficiency — industrial heating equipment (especially large diesel space heaters) is expensive; hire moves the capital cost to operating expense
• Maintenance burden — hire companies handle servicing, test-and-tag, and replacement when units fail. Owned equipment is the owner's problem
• Right-sizing flexibility — hire a 30 kW unit one winter, upgrade to 50 kW the next as the workshop grows. Owned equipment locks in the spec

Hire is typically the right call for:

• Construction sites (project-duration use)
• Workshops with seasonal heating need (3-6 months per year)
• One-off events or projects requiring temporary heating
• Hot-work projects requiring temporary additional heating

Buy is typically the right call for:

• Workshops with year-round or near-year-round heating need
• Multi-site operations where the same heater rotates between locations
• Specialised heating needs (specific output, specific fuel) where hire stock doesn't match
• Workshops where downtime from hire-equipment failure isn't acceptable

AIMS supports both — we source industrial heating equipment for purchase, and we can refer to specialist industrial hire suppliers (Coates Hire, Kennards Hire, Onsite Rental Group) for project-duration hire arrangements.

Brand reality — Australian industrial heating supplier landscape

Supplier / brand	Specialty	AIMS positioning
Fanmaster	Full AU industrial heating + cooling + ventilation specialist — diesel/gas/electric space heaters, radiant heaters, AU-made portable electric blowers	Sourced through industrial supplier network on request
Master Heaters	US-origin global brand, direct + indirect fired diesel, kerosene, propane construction heaters	Source via specialist supplier
Heatstar / Mr Heater	US-origin propane and natural gas construction heaters	Source via specialist supplier
Pinnacle Climate Technologies	US-origin diesel/electric/propane industrial heating range	Source via specialist supplier
Coates Hire / Kennards Hire / Onsite Rental	AU industrial hire — diesel space heaters, electric heaters, hire-by-the-week and project	Refer for hire arrangements when purchase isn't right
Schwank / Frico	European premium radiant tube heater specialty — gas radiant overhead heating	Source via specialist commercial gas installer
Roberts-Gordon	US-origin gas radiant tube heater premium range	Source via specialist commercial gas installer
Webasto / Eberspacher / Hcalory	Vehicle-mounted diesel parking/cabin heaters — RV/caravan/truck cabin tier, NOT industrial workshop scope	Out of scope — consumer/automotive accessory category

Honest scope: AIMS does not currently stock industrial heating product as a retail line. We source the full industrial heating category — diesel, gas, electric, radiant, space heaters, AU-manufactured specialty — through our industrial supplier network. Contact us with your workshop application and we'll quote and assist with selection.

Common mistakes — 12 patterns that cost workshops money, comfort, or safety

Mistake	What goes wrong
Running a direct-fired diesel/kerosene salamander in an enclosed workshop	CO accumulation — documented cause of workshop operator fatalities. Indirect-fired only for sealed workshops
Sizing heating to "peak winter day"	Workshop chronically over-heated most of the year, wasting fuel. Size to typical winter day; allow margin for cold snaps
Electric heating selected for large workshop	Running costs catastrophic — 3-5x gas/diesel per kWh. OK for small workshops or sealed spaces only
Forced-air heating in high-ceiling workshop	Heating the ceiling space rather than the workers below. Switch to radiant infrared
No CO detector with combustion heater	You can't see, smell, or taste CO. Detector is mandatory minimum control
Heater clearance to flammable materials skipped	Workshop fire — overheated cardboard, paper, fabric, paint thinner. Manufacturer spec clearance is not optional
LPG cylinder stored inside workshop without cage	AS/NZS 1596 non-compliance + fire risk. Cylinders go outside in compliant cage
Buying industrial heater without ventilation analysis	Inadequate ventilation → CO accumulation or oxygen depletion. AS/NZS 1668.2 fresh-air rates must continue during heating
Test-and-tag skipped on portable electric heater	AS/NZS 3760 non-compliance. 12-monthly inspection mandatory for workshop equipment
Cheap consumer column heater run in industrial workshop	Burns out in months — not rated for daily 8-hour duty. Buy AU-made portable industrial blower if electric is right
Diesel heater fuel storage in unbunded container	AS 1940 non-compliance — spill risk + EPA exposure. Bunded fuel storage mandatory
Welding/grinding work next to combustion heater	Sparks + flammable fuel + ignition source all in close proximity. Maintain combustion heater clearance from hot work

Selection checklist — the 9 questions that get you the right industrial heater

1. Workshop floor area + ceiling height + insulation level — drives the kW capacity calculation
2. Climate zone — temperate (Melbourne, Sydney inland, Adelaide, Brisbane) vs cold (Tasmania, Vic highlands, Snowy Mountains) vs tropical (heating rarely needed)
3. Workshop sealing + ventilation — sealed = electric or indirect-fired only; well-ventilated = direct-fired diesel/gas options open
4. Fuel availability — natural gas reticulated (lowest cost), LPG cylinder delivery (mid cost), diesel (universal availability), electric (always available, highest run cost)
5. Electrical supply — 10A / 15A / 20A single-phase / 3-phase 415V — limits the equipment options
6. Use pattern — continuous occupancy = space heating works; intermittent or spot need = radiant infrared
7. Workshop activity — welding/painting/electronics — drives ventilation strategy + heater type
8. Hire vs buy — seasonal use favours hire; year-round use favours purchase
9. Heating duration per year — under 60 days = electric/hire makes sense; over 120 days = invest in diesel/gas + radiant tube

AIMS industrial heating sourcing — call us for assistance

AIMS does not currently stock industrial heating product as a retail line. We do source the full industrial heating category through our supplier network — diesel space heaters (direct + indirect fired), gas space heaters (LPG + natural gas), electric space heaters, radiant infrared heaters (gas + electric + diesel), AU-manufactured portable electric blower heaters, gas radiant tube overhead heating systems, and related industrial heating equipment.

What we offer: industrial supply expertise, technical advice on sizing and selection, quote consolidation across multiple supplier sources, and assistance navigating the AS standards compliance picture for your specific workshop. We're not the cheapest if you know exactly what you want and you're buying off the shelf — but for workshops needing advice plus supply assistance, our team is here to help.

To get started: contact us on (02) 9773 0122 or via the contact form with the following information ready:

• Workshop dimensions (floor area + ceiling height)
• Workshop type (mechanical, fabrication, paint, electronics, etc.)
• Climate zone (state + city or postcode)
• Workshop sealing/ventilation (sealed, partially ventilated, open-bay, outdoor)
• Available fuel supply (natural gas, LPG cylinder access, diesel storage capacity, electrical supply)
• Heating use pattern (continuous, intermittent, spot)
• Budget vs running cost preference
• Hire vs purchase preference

Our team will quote the right industrial heating solution and assist with installation arrangements, AS compliance, and ongoing servicing. This is companion content to our Industrial Cooling Guide for the workshop climate-control reference pair. A dedicated Workshop Ventilation & Fume Extraction Guide is forthcoming.

Frequently Asked Questions

What's the difference between direct-fired and indirect-fired diesel heaters?

Direct-fired diesel heaters burn fuel directly in the airstream that's blown into the workshop — the workshop receives hot air plus all combustion byproducts (CO, CO2, moisture, NOx). Efficient (~99%) but requires substantial ventilation. Indirect-fired diesel heaters have a sealed combustion chamber with exhaust ducted outside via a flue; only clean warm air enters the workshop via heat exchanger. Lower efficiency (~80%) but safe for sealed/enclosed workshops. For most Australian workshops, indirect-fired is the right choice.

How much kW heating capacity do I need for my workshop?

Working starting point for moderate-insulation Australian workshop in temperate climate: 80-120 W per m² of floor area continuous heating load. A 200 m² workshop needs 20-25 kW continuous capacity; specify 30-40 kW heater output for warm-up and cold snaps. Adjust upward 30-50% for poor insulation, 20-30% for high ceilings, 30-50% for frequent door opening, 20-40% for cold climate (Tasmania, Vic highlands).

Can I run a diesel heater in a sealed workshop?

Only an indirect-fired diesel heater with exhaust properly ducted outside. Direct-fired diesel (salamander, kerosene torpedo) in a sealed workshop creates a serious CO accumulation hazard and is a documented cause of workshop operator fatalities. Even with an indirect-fired heater, install a CO detector near the operator workstation as a backup safety control. Always maintain AS/NZS 1668.2 minimum fresh-air ventilation rate when any combustion heater is running.

Diesel vs gas vs electric — which fuel for my workshop?

Diesel for large workshops (250+ m²) and outdoor industrial sites where heat output per dollar matters and gas reticulation isn't available. Gas (LPG or natural) for medium workshops (100-250 m²) where reticulation is available or LPG cylinder delivery is practical. Electric for small workshops (under 100 m²) or sealed bays where combustion is unsafe — accept the 3-5x higher running cost in exchange for safety and clean operation.

What's the AS standard for workshop gas heating?

AS 3814 (Industrial and Commercial Gas-Fired Appliances) is the Australian Standard governing workshop gas heating installation, certification, and maintenance. Commercial-scale gas heating requires a licensed gasfitter for connection, with annual servicing recommended. AS/NZS 1596 covers LPG cylinder storage on workshop sites — cage requirements, ventilation, ignition source separation, and signage. Both standards apply to industrial workshop gas heating installations.

Why is radiant infrared heating more efficient in some workshops?

Radiant IR heaters emit infrared radiation that heats objects and people directly — the radiation passes through air without being absorbed much. Workers feel warm; the workshop air stays cool. In high-ceiling workshops, workshops with frequent roller door opening, and outdoor industrial bays, the energy that would be wasted heating air that escapes through doors or rises to the ceiling instead goes directly to warming workers. Efficiency gains over convection or forced-air heating can be 40-60% in these scenarios.

Do I need a CO detector with a workshop heater?

Yes if you're running any combustion heater (diesel, LPG, natural gas), even an indirect-fired one. CO is colourless, odourless, and lethal at relatively low concentrations. A CO detector that alarms at 30-50 ppm gives early warning if anything goes wrong — heat exchanger crack, flue blockage, ventilation failure. Workshop CO detector is a small operating cost that prevents fatalities. Mandatory minimum safety control.

Can I plug an electric workshop heater into a normal wall socket?

Small electric heaters under 2.4 kW will run on a 10A 240V wall socket. Most industrial workshop electric heaters (5-15 kW) need 15A, 20A, or 3-phase 415V supply. Check the equipment nameplate against your workshop electrical supply before purchase. Larger AU-made portable electric blower heaters (9-15 kW) require 3-phase 415V with a dedicated industrial plug — not the standard wall outlet.

How much does it cost to heat a workshop in winter?

Depends on workshop size, climate, insulation, and fuel. Working comparison for a 200 m² moderately-insulated Australian temperate workshop over a 4-month winter (June-September): natural gas radiant heating is typically the cheapest to run per month, indirect-fired diesel space heating is mid-range, and electric space heating runs significantly more expensive than either of the combustion options. Hire equipment adds ongoing equipment cost on top of fuel. Contact AIMS for a quote tailored to your workshop dimensions, climate, and fuel availability.

What's the workplace minimum temperature in Australia?

Safe Work Australia's Code of Practice: Managing the Work Environment and Facilities sets workplace temperature as a thermal comfort obligation rather than a specific minimum. Practical guidance: maintain workshop temperatures around 16-24°C for general work, with the absolute minimum around 14°C for sedentary work. Cold workshops below 12°C increase manual handling injury risk significantly. Some industries have specific requirements — food handling, cold storage, and certain manufacturing processes have their own temperature regulations.

Should I hire or buy a workshop heater?

Hire is typically right for seasonal use (3-6 months per year), construction sites (project duration), one-off projects, and right-sizing flexibility. Buy is typically right for year-round heating need, multi-site operations where the heater rotates, specialised heating requirements, and workshops where downtime from hire-equipment failure isn't acceptable. Most Australian workshops with heating need under 90 days per year find hire cheaper over a 5-year lifecycle than purchase + maintenance.

What's a salamander heater?

"Salamander" or "torpedo" heater is industry slang for a direct-fired portable diesel or kerosene space heater — cylindrical body with combustion chamber, fan at the back, hot air exits the front. Cheap, powerful, common on construction sites. They are direct-fired (exhaust enters the workshop) and require substantial ventilation — outdoor or large open-bay use only. Running a salamander in an enclosed workshop creates a serious CO accumulation hazard. Use indirect-fired diesel instead for sealed workshop heating.

Why does an LPG cylinder freeze in cold weather?

Liquid propane in an LPG cylinder must vaporise to gas for combustion. Vaporisation absorbs latent heat — drawing heat from the cylinder, which cools further. In cold ambient temperatures, the cylinder can cool below propane's vapour pressure threshold and the gas flow drops or stops. Workshop LPG heating in cold climates (Tasmania, Vic highlands) sometimes needs cylinder heating jackets, larger cylinders to spread the vapourisation load, or natural gas reticulation as an alternative. The "freeze-off" effect is most noticeable on extended high-output use in cold weather.

Can I use a workshop heater while welding?

Yes with care. Maintain manufacturer-specified clearance between combustion heater and welding area (typically 2 m minimum). The bigger concern when heating + welding both happen is welding fume — warm air rising from heaters tends to lift fume into worker breathing zone faster. Source capture (welding fume extractor) becomes more important when heating is in use, not less. See our Respirator & Dust Mask Guide for the PPE side.

Does AIMS stock industrial heating products?

Not as a retail line currently. AIMS sources the full industrial heating category — diesel/gas/electric space heaters, radiant heaters, AU-manufactured portable electric blower heaters, and related equipment — through our industrial supplier network on request. Contact us on (02) 9773 0122 or via the contact form with your workshop application and we'll quote and assist with selection. This guide is a reference resource for workshop operators making the heating decision.