✅ This item is normally regularly stocked. Shipping times may vary depending on availability. Please contact us to confirm stock and shipping times. You will receive tracking details once the item has shipped.
Description
Flagro FVO-400RC – 390,000 BTU Indirect Heater for Oil Applications
When you’re facing frigid conditions on demanding jobsites, the Flagro FVO-400RC delivers powerful, clean, and safe heat with 390,000 BTU/hr of indirect-fired performance. Built by industry leader Flagro Industries, this oil-fired indirect heater is engineered for rugged environments, providing high-efficiency heating without combustion fumes in the airstream.
Equipped with a recirculating hood, an oversized 42-gallon fuel tank, Riello burner technology, and fork pockets for easy transport, the FVO-400RC is a reliable heating solution for construction, industrial, and emergency use.
Key Features of the Flagro FVO-400RC Indirect-Fired Heater
390,000 BTU Indirect Heating Power
Generates high-volume, clean heat ideal for tent heating, warehouse support, concrete curing, or restoration drying. Safe for enclosed or semi-enclosed spaces with proper ventilation.
Advanced Riello Burner System
Utilizes proven Riello burner technology for reliable ignition and combustion. Includes a nozzle pre-heater for cold-weather starts and a low-temperature fuel pump for consistent operation.
Oversized 42-Gallon Fuel Tank
Reduces refueling frequency for extended operation. Compatible with #1 or #2 fuel oil, dyed diesel, or kerosene.
Recirculating Hood for Fuel Efficiency
Captures return air to accelerate warm-up and improve fuel economy.
Durable Stainless-Steel Heat Exchanger
Welded 16-gauge 304 stainless-steel exchanger ensures corrosion resistance and long-term durability.
Powerful 4,000 CFM Blower Fan
Pushes clean heated air through ducts up to 150 ft. The backward-inclined blower operates quietly with a low 12.5 A draw at 115 V.
Rugged Jobsite-Ready Construction
Integrated forklift pockets, flat-free wheels, and a powder-coated steel cabinet make transport and handling simple in rough conditions.
Flagro FVO-400RC Specifications
| Specification | Details |
|---|---|
| Model | Flagro FVO-400RC |
| Heating Capacity | 390,000 BTU/hr |
| Fuel Type | #1 or #2 Fuel Oil, Dyed Diesel, Kerosene |
| Fuel Tank Capacity | 42 US gallons |
| Fuel Consumption | 2.9 GPH @ full load |
| Air Circulation | 4,000 CFM |
| Fan Motor | 1 HP / 115 V / 15 A |
| Power Draw | 12.5 amps |
| Heat Exchanger | 16-gauge 304 stainless steel |
| Ignition | Direct spark |
| Blower Type | Backward-inclined, low-noise |
| Air Outlets | 2 × 12″ or 1 × 16″ diameter |
| Air Inlet | 1 × 16″ diameter |
| Dimensions (L × W × H) | 84″ × 29″ × 50″ |
| Weight | 650 lbs |
| Wheels | 2 × 16″ flat-free high-density |
| Certifications | cETLus approved |
Included and Optional Accessories
Included:
- Built-in recirculating hood
- Integrated fuel tank
- Smart control panel
Optional Accessories:
- Remote thermostat (FV-THB)
- Outlet ducting – FV-HD12 (12″ × 12 ft) or FV-HDG16 (16″ × 25 ft)
- Return ducting – FV-HDV16 (16″ × 12 ft)
These accessories enhance flexibility for mobile, temporary, or remote heating applications.
Applications for the Flagro FVO-400RC
- Construction sites and concrete curing
- Restoration, drying, and climate control
- Warehouses and industrial facilities
- Oilfield, utility, and mining operations
- Emergency shelters and military tents
- Temporary or mobile workspaces
Safety Guidelines and Clearances
- Maintain minimum clearances: 10 ft (front), 2 ft (rear/sides), 3 ft (top)
- Operate only in ventilated or semi-open areas
- Not for residential indoor use
- Use approved regulators and proper fuel supply
- Inspect hoses, tank, and ignition systems regularly
Why Choose Cleanflow + Flagro Indirect-Fired Heaters
Cleanflow is your trusted Canadian source for indirect-fired heaters by Flagro Industries. We carry only authentic Flagro equipment, built in North America to handle the toughest winter environments.
Choosing the Flagro FVO-400RC means:
- Clean, ducted, high-volume oil-fired heat
- Advanced burner reliability and superior safety
- Reduced downtime with extended-run fuel capacity
- Proven durability for demanding worksites
- 100% genuine Flagro manufacture and support
Explore the full range of Flagro Heaters at Cleanflow.
Frequently Asked Questions
Can I use the Flagro FVO-400RC indoors?
Yes—provided the space is well-ventilated or semi-enclosed. This unit produces clean air with no combustion byproducts in the heated airstream.
How long does the 42-gallon tank last?
At full output (2.9 GPH), expect roughly 14 to 15 hours of runtime before refueling.
Can it be ducted?
Yes. Air can be ducted up to 150 ft with return-air options for improved efficiency via the recirculating hood.
What kind of fuel can I use?
The heater supports #1 or #2 fuel oil, dyed diesel, and kerosene—perfect for jobsite or off-grid heating applications.
How is this different from the FVNP-400RC model?
The FVNP-400RC runs on propane or natural gas, while the FVO-400RC is purpose-built for oil-based fuels and features a built-in fuel tank for mobile operation.
Need Help Sizing Your Heater?
Wondering if 390,000 BTU is right for your space? Use the BTU Heating Calculator to find the perfect heater for your application.
✅ This item is normally regularly stocked. Shipping times may vary depending on availability. Please contact us to confirm stock and shipping times. You will receive tracking details once the item has shipped.
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