Industrial and Construction Heaters

Heaters for Industrial, Construction, and Commercial Use

Cleanflow supplies high-performance, CSA-compliant industrial and construction heaters for Canadian job sites, shipped from the Winnipeg warehouse across Canada. The range runs from a 1,500 W portable shop heater to 1.5 million BTU indirect-fired units: Frost Fighter and Flagro indirect-fired and direct-fired construction heaters, King Electric and Modine electric and gas unit heaters for shops and garages, and Heatstar propane convection and radiant heaters.

Looking for reliable industrial space heaters you can trust in harsh winter conditions? Use this guide to compare heater types, understand how they work, and size a unit for your facility or temporary job site heating.

Top Brands Available

• King Electric

• Frost Fighter

• HeatStar

• Flagro

• DeWalt Tools

• Mr. Heater

• ToolTech

• Modine

Heater Types and How They Work

Convection Heaters

Convection heaters warm air by heating an internal element; warmer air rises, cooler air falls, creating a circulation loop (natural or fan-assisted).

• Best for: Even, whole-room heating with minimal noise

• Typical uses: Offices, site trailers, workshops, utility rooms

• Pros: Quiet, consistent heat; low maintenance; available as portable electric heaters or gas-fired convection models

• Notes: Look for CSA-certified convection heaters for code compliance

Direct-Fired Heaters

Direct-fired industrial heaters burn fuel (propane or natural gas) and push hot combustion air directly into space without a heat exchanger.

• Best for: Open or well-ventilated areas; drying and thawing

• Typical uses: Construction zones, barns, outdoor or semi-enclosed areas

• Pros: Very high efficiency and fast warm-up; lower upfront cost

• Caution: Not for enclosed spaces; produces combustion byproducts, so ensure adequate ventilation

Forced Air Heaters

Forced air heaters use a burner or electric element plus a blower to move heated air through ducts or directly into the space.

• Best for: Whole-building or large-area coverage

• Typical uses: Warehouses, fabrication shops, hangars

• Pros: Thermostat control; integrates with filtration/humidification; fast and uniform heating

• Options: Gas, diesel, or electric heaters; portable or fixed installations

Indirect-Fired Heaters

Indirect-fired heaters burn fuel in a sealed combustion chamber and transfer heat to clean air via a heat exchanger. Exhaust vents outside.

• Best for: Enclosed, occupied, or low-ventilation spaces

• Typical uses: Event tents, restoration, food processing, occupied work areas

• Pros: 100% clean, dry, fume-free air; safer for indoor use

• Trade-off: Slightly lower efficiency vs. direct-fired, but safer for air quality

Radiant Heaters

Radiant heaters (infrared) heat people and objects directly, without first heating the air.

• Best for: Drafty spaces and outdoor zones with spot or zone heating

• Typical uses: Loading docks, open bays, construction thawing, patios

• Pros: Instant, targeted heat; energy-efficient for zone applications

• Types: Infrared panels, tube heaters, ceramic radiant

Unit Heaters (Electric Unit Heaters and Gas/Oil)

Ceiling- or wall-mounted industrial heating units that deliver high-capacity heat while saving floor space.

• Best for: Garages, warehouses, maintenance bays, agricultural buildings

• Pros: Keeps floor clear; broad coverage; available as electric unit heaters or fuel-fired

• Tip: Choose models rated for your environment (e.g., washdown, hazardous locations)

Construction Heaters by Job

Match the heater to the job before the BTU figure.

• Ground thaw, concrete curing and open sites. A direct-fired construction heater puts every BTU into the air and runs on propane or natural gas: Flagro F-150 (150,000 BTU), F-400T (400,000 BTU, dual fuel, thermostat) up to the F-1500T at 1.5 million BTU.

• Occupied buildings, tents and restoration. An indirect-fired heater ducts clean air inside and vents exhaust outside: Frost Fighter IDF350 and IDF500 (350,000 and 420,000 BTU, dual fuel), the oil-fired IDH200QR to IDH500QR (170,000 to 500,000 BTU), and the IHS700 to IHS1500 for 700,000 BTU to 1.5 million BTU. Flagro's FVO (oil) and FVNP (propane or natural gas) indirect heaters cover 185,000 to 750,000 BTU with Riello burners.

• Shops, maintenance bays and commercial garages. Commercial garage heaters that hang from the ceiling and stay out of the way: King Electric EKB (2,850 to 5,000 W, 240 V), KB ECO2S two-stage (5 to 15 kW) and the portable PGH (3,770 W); Modine Hot Dawg power-vented natural gas unit heaters from 45,000 to 125,000 BTU where gas is cheaper than power.

• Spot heat and no power on site. Heatstar propane convection and radiant heaters and the DeWalt DXH45LP radiant heater run with no electricity, for trailers, loading docks and crews working outside.

How to Size an Industrial Heater

Right-size your industrial heating unit to maintain productivity and safety.

1) Measure space

• Area (sq. ft.) = length × width

• Volume (cu. ft.) = length × width × ceiling height

2) Estimate required BTUs

• Rule of thumb for insulated Canadian facilities: 30–60 BTU per sq. ft.

• Poorly insulated or open sites in harsh climates: 60–100+ BTU per sq. ft.

• Example: 4,000 sq. ft. × 60 BTU/sq. ft. ≈ 240,000 BTU/hr

3) Factor conditions

• Insulation quality, air changes/ventilation, door cycles, desired temperature rise, regional climate

4) Choose fuel and form factor

• Electric heaters for clean, no-emission indoor heat where power is available

• High BTU propane heaters (Canada-ready) or diesel/NG for remote worksites or rapid warm-up

• Indirect-fired heaters for enclosed/occupied spaces; direct-fired for ventilated drying/thawing

👉 Save time and avoid manual calculations by using our free BTU calculator tool. Quickly find the ideal heater size for your space here: Cleanflow BTU Calculator.

Featured Industrial and Construction Heaters in Stock

All models below are available across Canada and ship fast from our Canadian warehouse.

Heatstar HS80CVLPX Propane Industrial Convection Heater

Clean-burning, no-electricity job site heater for quick setup.

• BTU Range: 30,000–80,000

• Fuel Type: Propane

• Use Case: Temporary job site heaters for up to ~1,900 sq. ft.

• Highlights:

• No power required; ideal for frozen job sites with no electrical access

• Quiet, odorless operation

• Safety: Thermoelectric safety valve; standing pilot

• “Built to perform in harsh winter conditions”

Ideal for: Construction thawing, agriculture outbuildings, remote utility work.

Heatstar HS200CVX Convection Propane Industrial Heater

Big heat right out of the box for larger spaces.

• BTU Range: 75,000–200,000

• Fuel Type: Propane

• Coverage: Up to 4,700 sq. ft.

• Operation: No electricity required; fully assembled

• Safety: Thermoelectric safety valve; standing pilot; Insta-Lock chamber

• Compliance: CSA-certified for Canadian safety standards

• Callout: High BTU propane heater Canada job site ready

Best for: Large worksites, concrete curing assist, temporary industrial space heating

Heatstar HS4000NG/LP Dual-Fuel Direct-Fired Industrial Heater

High-output, fan-assisted heat for big jobs.

• BTU Output: 400,000 BTU/hr

• Fuel: Natural Gas or Propane

• Air Volume: 4,120 CFM

• Portability: Heavy-duty 10" pneumatic wheels

• Controls: External remote thermostat connection; onboard diagnostics

• Use Case: Construction sites, large warehouses, industrial yards

• Callout: “Temporary job site heater with massive airflow for rapid warm-up”

Choose when you need: Fast heat gains in well-ventilated or semi-open environments

View This Industrial Heater

Heatstar HSP500ID-A Pro-Series Indirect Fired Heater

Clean, fume-free heat for enclosed or occupied spaces.

• BTU Output: 500,000 BTU/hr

• Fuel: Diesel, Kerosene, Fuel Oil, Jet A

• Air Volume: 4,032 CFM

• Tank: 46-gallon; lift bracket; heavy-duty frame

• Ducting: Up to 100 ft; multiple ducting options

• Safety/Quality: UL Certified; electronic flame control; water-resistant control box

• Air Quality: 100% clean, dry, fume-free air

• Callout: “Indirect fired industrial heater safe, clean air for enclosed spaces”

Ideal for: Event tents, restoration, kitchens/food processing, occupied construction zones

Mr. Heater Hand-Held Propane Torch

High-BTU torch for thawing, cleanup, and job site tasks.

• BTU Output: 500,000 BTU/hr

• Fuel: Propane

• Length: 36" with heavy-duty shaft

• Includes: 10 ft hose and striker

• Features: Ergonomic grip; needle valve adjustment; excess flow P.O.L. fitting

• Use Case: Ice/snow removal, weeds, surface prep

Note: Not a space heater; a utility heater/torch for task-specific heat

How to Size a Heater for a Warehouse or Shop

• Basic formula (insulated): BTU/hr ≈ Area (sq. ft.) × 30–60

• Cold, leaky, or high-traffic spaces: Use 60–100 BTU/sq. ft.

• Example: 10,000 sq. ft. × 50 BTU = 500,000 BTU/hr target

• Consider ceiling height and air turns. High ceilings may need destratification fans.

How big a heater do I need for a 40 × 60 shop (2,400 sq. ft.)?

• Light insulation: 2,400 × 50–60 BTU ≈ 120,000–144,000 BTU/hr

• Poor insulation or frequent door cycles: 2,400 × 70–90 BTU ≈ 168,000–216,000 BTU/hr

Why Buy Industrial Heaters from Cleanflow

• CSA-compliant and jobsite-safe: Meet Canadian regulatory and safety standards

• Built for harsh Canadian environments: Reliable performance in extreme cold, snow, and wind

• Fast shipping from our Canadian warehouse: Avoid border delays; mobilize quickly

• Local support: Talk to a real person for sizing, fuel selection, and safety guidance

• Bulk procurement ready: Support for municipal agencies, utilities, and contractors

Buy Industrial and Construction Heaters Online from Cleanflow

Every industrial heater and construction heater on this page ships from Cleanflow's Winnipeg warehouse across Canada, with Frost Fighter ducting, thermostats, regulators and flue parts stocked alongside the heaters. Send the floor area, ceiling height, insulation and fuel on site to info@cleanflow.ca and we will size the unit and confirm lead time before you order.

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