Frost Fighter: Canada’s Cold-Weather Solution
Frost Fighter is Canada's trusted name in indirect-fired portable heating. Built by Frost Fighter Inc. in Winnipeg, Manitoba manufacturing since 1965, now in its second generation of family ownership, these rugged, high-BTU units deliver clean, dry, fume-free heat that keeps jobs moving in extreme cold.
Frost Fighter pioneered indirect-fired heating for the North American rental industry and continues to design and build every unit at the Winnipeg facility. Engineered for efficiency, safety, and long duct runs, Frost Fighter heaters excel in construction, mining, oil and pipeline projects, concrete curing, warehouses, restoration work, and tent and event heating.
If you need industrial heating that performs when temperatures plunge, choose Frost Fighter.
Trusted by professionals in municipal, waterworks, and utility industries across Canada. Explore Frost Fighter for sale and stay productive all winter.
Typical applications:
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General construction and winter job sites
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Concrete curing, masonry, bridge, and road building
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Restoration and relief; warehouse and facility heating
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Equipment and aircraft pre-heating
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Mining, oil, and pipeline industries
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Drying paint and coatings; agricultural moisture control; livestock temperature control
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Tent and event heating; pest control
View all indirect-fired heaters
Why Choose Frost Fighter Heaters for Construction and Industrial Sites
Frost Fighter heaters stand out for durability, fuel flexibility, and safety, purpose-built for Canadian winters.
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Clean, dry heat: Indirect combustion and stainless steel heat exchangers deliver fume-free air for enclosed spaces.
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Fuel flexibility: Multi-fuel options (diesel/oil, propane, natural gas) reduce downtime on remote jobs.
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Long duct runs: High static pressure blowers support extended supply and return ducting for even heat distribution.
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Quiet operation: Ultra-quiet models (<62 dB) support event and tent heating without noise disruption.
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Certified safe: CSA/ETL-certified models align with Canadian safety and compliance requirements.
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Built to move: Mobile jobsite frames with heavy-duty pneumatic tires and lifting bails for fast deployment.
- Efficiency that pays: Up to 81% efficiency and recirculation options help cut fuel costs and maintain consistent temperatures.
Looking for a Frost Fighter for sale? Shop our in-stock models and accessories with Canada-wide shipping.
Why Indirect-Fired? The Safety and Quality Difference
Direct-fired heaters dump combustion products, carbon monoxide, carbon dioxide, water vapor, and unburnt fuel directly into the heated airstream. They're cheaper to manufacture and acceptable for high-ventilation outdoor or open-shell applications, but they're not suitable for occupied indoor spaces, concrete curing, or finishing work where moisture and exhaust contamination cause real damage.
Indirect-fired heaters separate combustion from the airstream. Fuel burns inside a sealed combustion chamber, heat transfers through a stainless steel heat exchanger, and a blower pushes only the warmed, clean air into the space. Combustion gases vent outside through a flue.
The result: fume-free, dry, breathable air rated for enclosed work areas, occupied spaces, concrete curing (where moisture would compromise the cure), paint and coating drying (where exhaust would contaminate the finish), and worker comfort in tents and shelters. Design directs every Frost Fighter heater.
The IDH and IDF series include stainless steel multi-pass heat exchangers and fully insulated jackets to maintain efficiency in sub-zero conditions.
Frost Fighter Heater Comparison Chart
All 8 Frost Fighter models are stocked at Cleanflow, side-by-side. Coverage area is calculated at the typical jobsite multiplier of 40–60 BTU per sq.ft. adjust down for well-insulated indoor spaces and up for drafty or exposed areas.
|
Model |
BTU/h |
Airflow (CFM) |
Fuel Options |
Coverage Area* |
|---|---|---|---|---|
|
IDH200QR |
170,000 |
1,610 |
LP/NG or Oil/Diesel |
2,800–4,250 sq.ft. |
|
IDF350 |
350,000 |
— |
Dual (EZ Ball-Valve) |
5,800–8,750 sq.ft. |
|
IDH400QR |
400,000 |
2,800 |
Dual (Oil/Diesel + LP/NG) |
6,650–10,000 sq.ft. |
|
IDF500 |
420,000 |
— |
Dual (EZ Ball-Valve) |
7,000–10,500 sq.ft. |
|
IDH500QR |
500,000 (Oil) / 420,000 (LP/NG) |
4,800 |
Dual fuel |
8,300–12,500 sq.ft. |
|
IHS700H |
700,000 |
8,000 |
Multi-fuel |
11,650–17,500 sq.ft. |
|
IHS700P |
700,000 |
4,600 |
Multi (Oil/Diesel/LP/NG, EZ Burner Switch-Out) |
11,650–17,500 sq.ft. |
*Coverage at 40–60 BTU/sq.ft. (typical jobsite). For well-insulated spaces (25–30 BTU/sq.ft.), each model covers more area; for drafty/exposed areas (60–80 BTU/sq.ft.), less. Always select a heater with 20–30% reserve power for extreme cold. Use the Cleanflow BTU Calculator to size your space precisely.
Choosing the Right Frost Fighter for Your Jobsite
Five buyer scenarios cover most Frost Fighter purchases. Use this guide to match the application to the right model and BTU range:
Concrete curing, masonry, and finishing work
Indirect-fired heat is critical here. Direct-fired exhaust would introduce moisture and contaminants that compromise the cure or finish. Plan for 50–75 BTU per sq. ft. of slab or enclosure. The IDF350 handles most pour and cure jobs up to roughly 4,500–7,000 sq. ft.; for larger pours or longer winter cures, step up to the IDH400QR or IDH500QR. The stainless steel heat exchanger and insulated jacket on these models maintain consistent output through extended cure cycles.
General construction and winter jobsites
Plan for 40–60 BTU per sq.ft. for typical enclosed jobsites. The IDH200QR (170,000 BTU/h, <74 dB) covers smaller framing, finishing, or partition zones up to ~4,250 sq.ft. The IDF500 (420,000 BTU/h, dual-fuel, 6-ply pneumatic tires) is the workhorse for active construction sites that need rugged transport and EZ Ball-Valve fuel switchover. Up to 50 ft of ducting reaches into multiple work zones from a single unit.
Restoration, drying, and warehouse heating
Restoration projects need clean dry heat without exhaust contamination. Indirect-fired is the only option. For 5,000–10,000 sq.ft. warehouse and facility recovery, the IDH400QR delivers 81% thermal efficiency and ultra-quiet <62 dB operation important when work continues around the heater. Long duct runs (up to 100 ft supply, 50 ft return) allow you to place the heater outside the affected space and direct heat precisely to drying zones.
Mining, oil, and pipeline projects
Remote sites with bulk diesel storage, extreme cold, and demanding runtime call for the highest-output Frost Fighter models. The IHS700P pairs 700,000 BTU/h and 4,600 CFM with a 175-gallon tank for up to 35 hours of unattended runtime, EZ Burner Switch-Out for fuel flexibility, and optional 460V/575V/600V configurations for site power. For applications needing higher static pressure (~6.0" w.c.) and longer duct runs, the IHS700H delivers 8,000 CFM airflow on the same 700,000 BTU output.
Tent and event heating
Indoor air quality and noise are non-negotiable for occupied event spaces. The IDH400QR and IDH500QR both run under 62 dB and deliver fume-free indirect heat through long duct runs. This keeps the heater outside the tent and directs clean warm air inside. Plan for 25–30 BTU per sq.ft. for well-sealed event tents, more for open or drafty venues.
Explore Frost Fighter Indirect-Fired Heater Models
Find the Frost Fighter indirect-fired heater for your application, construction heat, restoration, event tents, or industrial projects. These Frost Fighter heaters for construction are engineered for harsh environments.
Frost Fighter IDH200QR — 170,000 BTU/h, Multi-Fuel Efficiency
The Frost Fighter IDH200QR indirect-fired heater delivers 170,000 BTU/h and 1610 CFM with quiet operation (<74 dB). Available in Propane/Natural Gas (LP/NG) and Oil/Diesel, this model features the high-efficiency “Multi-Pass” stainless steel heat exchanger (81% efficiency), extended ducting capability (12" outlet up to 100 ft; 12" return up to 50 ft), independent fan and combustion air for no cold starts, and CSA approvals. Ideal for small to mid-size construction zones, restoration, and tent/event spaces needing clean, dry heat.
- Frost Fighter indirect-fired heater for sale in Canada
- Use cases: jobsite heaters, warehouse heating, enclosed work areas
- Fuel options: LP/NG or Oil/Diesel for maximum versatility
Frost Fighter IDH400QR — 400,000 BTU/h, Long Duct Runs
Built for extreme conditions, the Frost Fighter IDH400QR indirect fired heater (Oil/Diesel or LP/NG) delivers up to 400,000 BTU/h and <62 dB quiet operation. A fully insulated jacket retains heat and remains cool-to-touch; the stainless steel heat exchanger and independent fan/combustion air provide consistent output in freezing temperatures. Supports up to 100 ft of supply ducting (dual 12" outlets) and up to 50 ft of 16" return ducting for efficient, even coverage.
- Perfect for large construction sites, concrete curing, and industrial spaces
- Long ducting capability for sectionalized heat control
- CSA compliant for safety-driven projects
Frost Fighter IDH500QR — 500,000 BTU/h, High Airflow
For large-scale heating, the Frost Fighter IDH500QR indirect-fired heater delivers 500,000 BTU/h with 4800 CFM airflow and ultra-quiet operation (<62 dB). Features a stainless steel multi-pass heat exchanger, insulated jacket, high static pressure performance, dual 12" duct outlets, and a 42-gallon fuel tank for up to 14 hours of runtime. Meets CSA approvals.
- Ideal for mining operations, oil/pipeline projects, aircraft, and equipment pre-heating
- Long runtime reduces refueling downtime
- Reliable heat distribution across big spaces
Frost Fighter IDF350 and IDF500 — Portable, Dual-Fuel Performance
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Frost Fighter IDF350 indirect fired portable heater: 350,000 BTU/h of clean, dry heat; stainless steel heat exchanger; fully insulated jacket; ductable up to 50 ft. Great for construction, event tents, and large facilities.
- Frost Fighter IDF500 indirect fired portable heater: 420,000 BTU/h; dual-fuel options (Oil/Diesel/Kerosene or LP/NG); GenySis diagnostics (oil models); heavy-duty tires; CSA/ETL certified; ductable up to 50 ft. Designed for industrial-grade reliability.
These Frost Fighter portable indirect-fired heaters are built for mobility and performance on demanding Canadian jobsites.
Frost Fighter IHS700H — 700,000 BTU/h, High Static Pressure
The Frost Fighter IHS700H is the highest-airflow heater in the Frost Fighter lineup. It has 700,000 BTU/h, 8,000 CFM, and approximately 6.0 inches of static pressure. The high-static-pressure design supports the longest duct runs in the catalog and overcomes restrictive duct configurations on complex jobsites. Multi-fuel capable (Oil/Diesel, LP/NG) with stainless steel heat exchanger and CSA/ETL certification. Best for mining, large industrial enclosures, and pipeline projects where duct geometry or distance would limit smaller models.
Frost Fighter IHS700P — 700,000 BTU/h, Long Runtime
The Frost Fighter IHS700P pairs 700,000 BTU/h and 4,600 CFM with the longest unattended runtime in the lineup, up to 35 hours on the optional 175-gallon Oil/Diesel tank. Multi-fuel capable across Oil, Diesel, LP, and NG with the EZ Burner Switch-Out Kit, allowing pre-configured field conversion between fuel types. Supports 208/230V single-phase and three-phase power, with optional 460V, 575V, and 600V configurations to match jobsite electrical service. Over 80% thermal efficiency, CSA and ETL certified. Best for pipeline, oilfield, large-scale industrial, and emergency response applications where refueling downtime must be minimized.
Fuel Selection: Oil/Diesel, LP/NG, or Dual-Fuel?
Most Frost Fighter models are configured for either Oil/Diesel or LP/NG, with several offering dual-fuel flexibility. Match the fuel option to your jobsite reality:
Choose Oil/Diesel when...
...your site already has bulk fuel storage, your equipment is diesel-fueled, runtime matters more than emissions, or you're working remote sites where propane delivery is unreliable. Oil/Diesel models typically deliver higher BTU output on the same chassis (e.g., the IDH500QR puts out 500,000 BTU on Oil/Diesel vs. 420,000 BTU on LP/NG) and integrated fuel tanks (sized 42 to 175 gallons depending on model) provide multi-shift unattended runtime.
Choose LP/NG when...
...you're working in urban or suburban sites with natural gas service available, you need cleaner combustion for indoor occupied spaces, or you're swapping propane cylinders for fast fuel changes (no fuel-tank fill, no diesel handling). LP/NG models route external fuel supply, so the chassis is lighter and easier to position. Best for events, restoration, facility heating near gas mains.
Choose dual-fuel when...
...fuel availability or pricing fluctuates between projects, or you're a rental fleet operator who needs operational flexibility for resale value. The IDF350 and IDF500 use the EZ Ball-Valve switchover to transition between LP/NG and Oil/Diesel without tools. The IHS700P uses the EZ Burner Switch-Out Kit for pre-configured field conversion. Higher upfront cost, but flexibility pays back across multi-project life.
Accessories – What's Included vs. Sold Separately
| Accessory | Included | |
| Main Heater Unit | ✅ Yes | Indirect-fired, fully assembled (Oil/Diesel or LP/NG) |
| Integrated Fuel Tank | ✅ Yes | Only on Oil/Diesel models (size varies per model) |
| Power Cord (120V / 15A) | ✅ Yes | Standard for most models |
| Wheels, Handles & Frame | ✅ Yes | For portability and mobility |
| Forklift Pockets / Lifting Bail | ✅ Yes | Included on most models (varies by unit) |
| Supply Ducting | ❌ No | Sold separately – typically 12" or 16" diameter, up to 100 ft |
| Remote Thermostat | ❌ No | Optional add-on (25 ft cable typical) |
| Return Ducting | ❌ No | Not compatible with IDF Series – only select IDH models support it |
| External Fuel Tank | ❌ No | Required for LP/NG models (not included) |
Always check the specific model’s manual or brochure for precise accessory compatibility and included components.
Sizing Your Frost Fighter Heater
Choose the right BTU output for efficient, safe heat on-site:
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Well-insulated indoor spaces: 25–30 BTU/sq. ft.
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Typical job sites: 40–60 BTU/sq. ft.
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Drafty/exposed areas: 60–80 BTU/sq. ft.
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Concrete curing: 50–75 BTU/sq. ft.
Example: A 2,000 sq. ft. site × 50 BTU = 100,000 BTU
→ Use a model like the IDH200QR (170,000 BTU/h) for reserve power.
✔ Consider insulation, temperature gap, and air changes.
👉 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
Ready to heat your job site? Shop Frost Fighter for Sale
Frost Fighter heaters are built in Winnipeg, Canada, for the toughest Canadian winters. Trusted for reliable heat, clean air, and CSA-certified safety, our indirect-fired heaters and accessories are in stock and ready for Canada-wide shipping. Whether you need industrial, construction, or event heating, shop Frost Fighter today and stay productive all winter.
Shop Frost Fighter heaters today.
FAQs
How does the Frost Fighter IDH200QR differ from other indirect-fired heaters?
The IDH200QR uses a high-efficiency “Multi-Pass” stainless steel heat exchanger (81% efficiency) and supports multiple fuels (propane, natural gas, oil, diesel). It’s a compact, quiet, fuel-efficient Frost Fighter indirect-fired heater that’s easy to duct and deploy indoors.
How does the Frost Fighter IDH400QR handle extreme weather?
A fully insulated jacket retains heat in harsh weather, while an independent fan and combustion air maintain steady output even in sub-zero conditions. It’s a proven Frost Fighter heater for construction in Canada.
What are the advantages of the Frost Fighter IDH500QR?
With 500,000 BTU/h and 4800 CFM, <62 dB operation, and up to 14 hours of runtime, this model handles large-area heating, long duct runs, and demanding applications with CSA-approved safety.
Why choose the Frost Fighter IDF500?
Delivering 420,000 BTU/h of clean, dry heat, the IDF500 combines mobility (pneumatic tires, lifting bail), safety (CSA/ETL), and control (GenySis diagnostics for oil models), with up to 50 ft of ducting.
How does the Frost Fighter IDF350 compare?
The IDF350 offers 350,000 BTU/h with a stainless steel heat exchanger and fully insulated jacket, plus up to 50 ft of ducting. Ideal for construction, warehouses, and event tents that need quiet, efficient heat.
Are Frost Fighter heaters CSA/ETL certified?
Yes. Many Frost Fighter heaters carry CSA/ETL certifications for compliance and safe operation in Canada.
Can indirect-fired heaters be used indoors?
Yes. Frost Fighter indirect-fired heaters provide clean, dry, fume-free heat. Exhaust gases are vented outdoors while heated air is circulated inside.
How far can I duct heat?
Model-dependent. IDH series supports long runs (up to 100 ft supply; up to 50 ft return), and IDF series supports up to 50 ft. Refer to individual product pages for specifics.
What fuels can I use?
Frost Fighter offers diesel/oil, propane, and natural gas options, with some dual-fuel flexibility to control costs and ensure availability on remote sites.
What size Frost Fighter indirect-fired heater do I need?
As a general guide, many job sites plan 40–60 BTU per square foot, depending on insulation, temperature differential, and air changes. For help sizing the right Frost Fighter heaters for construction, contact our team.
Should I buy the Oil/Diesel or LP/NG version?
Choose Oil/Diesel for remote sites with bulk fuel storage, multi-shift unattended runtime, and higher BTU output on the same chassis. Choose LP/NG for urban or suburban sites with natural gas service, cleaner combustion, or fast cylinder swaps. If fuel availability or project mix varies, look at the dual-fuel IDF350, IDF500, or IHS700P with EZ switchover capability — higher upfront cost, but flexibility pays back across multiple projects.
What's the difference between the IHS700H and the IHS700P?
Both deliver 700,000 BTU/h, but they're optimized for different jobsite challenges. The IHS700H produces 8,000 CFM with approximately 6.0 inches w.c. of static pressure built for the longest duct runs and most restrictive duct geometries. The IHS700P produces 4,600 CFM with the longest unattended runtime in the lineup, up to 35 hours on the optional 175-gallon tank, with multi-fuel EZ Burner Switch-Out and optional 460V/575V/600V power configurations. Choose the H for maximum airflow and duct reach; choose the P for runtime and fuel flexibility.