Flagro

Flagro Heaters: Canadian-Built Heating and Climate Solutions That Keep Your Operations Moving

When crews are on the clock and temperatures drop, you need heat you can count on. Flagro delivers. Built in St. Catharines, Ontario, and trusted across Canada since 1978, Flagro manufactures rugged, high-output portable heaters and burners. From job sites to event tents to greenhouses, Flagro keeps people productive, materials on spec, and projects on schedule.

A Canadian Manufacturer with Proven History

Founded by Bruce Watson in 1978 and acquired by Sunbelt Rentals in 2022, Flagro has expanded its manufacturing footprint and product range while holding the line on quality. Every heater is tested by qualified technicians and meets applicable regulatory and safety standards. Decades of field use in harsh Canadian conditions have shaped what Flagro builds: durable, serviceable machines that start reliably and run clean.

What Flagro Offers Canada’s Worksites and Facilities

Wide fuel flexibility: propane (LP), natural gas (NG), diesel/oil, and electric
Broad BTU range: from 30,000 to 2,300,000 BTU/hr to match any space or spec
Direct-fired, indirect-fired, radiant, and electric models
North American manufacturing and fast parts turnaround for minimal downtime

Flagro Products

Heaters

Top Picks for Construction & Industrial Sites

F-1500T Dual-Fuel Powerhouse

Delivering up to 1,500,000 BTU with propane or natural gas, this unit is one of the most powerful Flagro construction heaters for sale in Canada. Built for large-scale builds and winter maintenance, it keeps projects moving even in sub-zero conditions.

F-1000T Heavy-Duty Dual-Fuel Heater

This 1,000,000 BTU model offers propane/natural gas flexibility with dependable ignition and safety systems. It’s ideal for contractors who need rugged, high-capacity heating on Canadian job sites.

F-400T Mid-Range Worksite Heater

At 400,000 BTU, this dual-fuel propane/natural gas unit provides reliable, portable heating for mid-size projects. Canadian crews value it for its simple controls, rugged design, and efficient air circulation.

Best for Events, Agriculture & Facilities

FVNP-750 Indirect-Fired Heater

Offering 750,000 BTU of clean, dry heat with propane or natural gas, this unit is perfect for event tents, enclosed venues, or greenhouse operations. Its fume-free performance ensures safe comfort across Canada.

FVO-750 Oil Indirect Heater

This 750,000 BTU oil-fired model delivers powerful heat through a clean exchanger system. Canadian agricultural and industrial facilities rely on it for dependable, ductable warmth in large enclosed areas.

FVNP-200RC Compact Indirect-Fired Heater

Producing 185,000 BTU, this propane/natural gas heater is quiet, efficient, and easy to transport. It’s a go-to for event planners, farmers, and facility operators who need versatile Canadian-built heating.

FVO-200RC Portable Oil Heater

With 185,000 BTU and a built-in fuel tank, this indirect-fired unit offers extended run times. It’s best for agricultural setups, maintenance shops, and event spaces needing safe, portable heat in Canada.

Built for the Industries That Keep Canada Running

Construction and Industrial: Heat concrete pours, protect finishes, and keep crews on task in sub-zero conditions with indirect or direct-fired units sized for large volumes.
Events: Deliver clean, fume-free heat to enclosed tents and venues with indirect-fired heaters and HEPA filtration for comfort and safety.
Agriculture: Maintain stable temperatures for greenhouses and livestock; choose dual-fuel options for flexibility and electric or radiant models for enclosed spaces.
Commercial Facilities: Deploy portable AC, heat pumps, and dehumidifiers for maintenance, emergency response, and seasonal comfort without permanent installs.

Why Teams Choose Flagro

Quality since 1978: Proven designs that withstand harsh use and rough transport
Strong technical support: Real help when you need it, from setup to service
Fair warranty program: Backing that reflects confidence in the build
Fast parts supply: Quick, consistent turnaround that cuts downtime
Value over life-cycle: Competitively priced equipment that delivers ROI year after year

Flagro Heaters: The Right Heat for the Job

Indirect-Fired Heaters: Clean, dry heat via a heat exchanger is ideal for enclosed spaces, finishing work, and occupied areas. Popular options like the FVO-400 feature stainless steel heat exchangers and Riello burner tech for efficiency and reliability.
Direct-Fired Heaters: High-efficiency, high-output heat for ventilated sites and outdoor applications; models like the F-400T add thermostats and wheel kits for easy control and mobility.
Radiant Heaters: Targeted warmth to people and surfaces with minimal air movement, great for open or semi-enclosed areas; stackable designs simplify storage and transport.
Dual-Fuel Heaters: Switch between NG and LP to match site availability and cut fueling delays; large-frame units like the F-1500T excel on big construction projects.

Smart add-ons such as advanced thermostats, remote monitoring (cell/Wi‑Fi), and multi-floor temp/humidity cables help teams manage climate precisely and reduce energy waste.

Keep Your Fleet Running: Parts and Service

Construction heaters take a beating. Flagro’s serviceable designs and readily available parts keep them earning. Routine checks on blower motors, gas valves, thermocouples, and fuel lines prevent costly downtime. Replacing a tired component is often a fast, low-cost fix that extends the life of your heater and protects your schedule and budget.

Canadian-built; tested to safety and regulatory standards
30,000–2,300,000 BTU/hr outputs across fuel types
Direct, indirect, radiant, electric, and dual-fuel options
Portable AC, heat pumps, dehumidifiers, HEPA air scrubbers
Strong technical support, fair warranty, fast parts turnaround
Ideal for construction sites, events, agriculture, and commercial facilities

Sizing Your Heater

Choosing the right heater size ensures efficient performance and lower fuel costs. A simple rule of thumb is:

Indoors / Enclosed Spaces: ~40–50 BTU per sq. ft.
Workshops / Semi-Enclosed Areas: ~30–40 BTU per sq. ft.
Outdoor / Ventilated Sites: ~20–30 BTU per sq. ft.

Example: A 2,000 sq. ft. construction site may need around 80,000–100,000 BTU. For larger, exposed sites, a higher-capacity Flagro unit like the F-1500T may be the best fit.

Tip: Always consider insulation quality, ceiling height, and outside temperature when sizing.

Reduce Downtime and Control Your Job Site Climate

Cleanflow brings you Flagro heaters for sale from Flagro Industries. Trusted across Canada for performance and reliability. From construction to events and agriculture, our portable climate solution keeps your operations moving in every season. Fast-track your order today with Cleanflow.

FAQs

Are Flagro heaters compliant for use in Canada?

Yes. Flagro products are manufactured in North America and tested by qualified technicians to meet applicable regulatory and safety standards. Models and fuel types are available to suit provincial requirements.

Which heater type should I choose for enclosed spaces?

Use indirect-fired heaters for enclosed or occupied areas. They separate combustion by-products from the heated air, delivering clean, dry heat suitable for finishing work and events.

Do Flagro heaters support different fuels on the same unit?

Yes. Several Flagro construction heaters offer dual-fuel capability (NG/LP), giving you flexibility when site fuel availability changes and helping reduce downtime.

How quickly can I get parts and service?

Flagro’s parts program is known for quick, consistent turnaround. Routine service items—blower motors, valves, thermocouples, and hoses—are commonly stocked to keep your fleet running.

Can I monitor temperature across multiple floors or zones?

Yes. With available accessories like multi-floor temperature and humidity cables, teams can monitor and control conditions across complex sites more accurately.

Do Flagro propane heaters work in extreme cold?

Yes. Flagro propane heaters are built in Canada and tested in harsh winter conditions. They deliver reliable heat output and are trusted on job sites nationwide.

Are diesel-fired Flagro heaters safe for indoor use?

Flagro diesel heaters should only be used in ventilated spaces or with indirect-fired models. For enclosed environments, choose Flagro indirect-fired heaters for clean, safe air.

What makes Flagro construction heaters different?

Flagro construction heaters are designed for Canadian job sites, offering high BTU output, fuel flexibility, and durable builds that reduce downtime and keep crews productive.