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Flagro FVO-400 – 390,000 BTU Indirect Fired Heater

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Flagro FVO-400 Indirect Fired Heater delivers 390,000 BTU of powerful, clean heat for large spaces. With extended ducting and durable construction, it’s ideal for construction sites, industrial facilities, and temporary structures. Available now—get yours today!

Flagro FVO-400 · Indirect Fired Heater — Powerful, Reliable, Efficient

High-performance, clean heat for construction, industrial, warehouse, and temporary-structure applications.

The Flagro FVO-400 Indirect Fired Heater delivers 390,000 BTU/hr of moisture-free heat with
2,500 CFM airflow for fast, even distribution. Built for durability and fuel efficiency, it’s a flexible,
cost-effective solution for maintaining a comfortable, controlled climate in demanding conditions.

Model: FVO-400 · Category: Indirect-Fired Heaters

 

Technical Specifications

Heating Capacity 390,000 BTU/hr
Airflow 2,500 CFM
Fuel Type Fuel oil
Fuel Tank Capacity 42 US gallons
Fuel Consumption 2.81 GPH
Run Time (per tank) Up to 15 hours
Power Requirements 120 V · 15 A
Dimensions (L×W×H) 70″ × 29″ × 52″
Weight 450 lbs

Advanced Heating Technology for Maximum Efficiency

  • Indirect-Fired Design — produces clean, fume-free heat that’s safe for enclosed or moisture-sensitive spaces.
  • Riello Burner Technology — consistent, high-efficiency combustion with reduced fuel waste.
  • Stainless Heat Exchanger — fully welded 304, 16-gauge heat exchanger for long-term durability.

Versatile Air Distribution for Targeted Heating

  • Stock Dual 12″ Outlets — balanced, two-run distribution.
  • Optional Single 16″ or 20″ Outlet — customize for specific applications.
  • Extended Ducting — direct heat precisely where it’s needed across large or distant areas.

Built for Durability and Reliability

The FVO-400’s rugged construction is designed to withstand harsh job-site conditions. Efficient fuel usage enables
up to 15 hours of runtime per tank to minimize refueling downtime.

Ideal Applications

  • Construction Sites — comfort for crews; protection for materials and finishes.
  • Industrial Settings — stable temperatures for equipment and processes.
  • Temporary Structures & Event Tents — reliable heat without exhaust fumes indoors.

Why Choose the Flagro FVO-400?

  • Trusted Flagro Brand — quality, durability, and innovation.
  • Cost-Effective Heating — high BTU output with efficient fuel consumption.
  • Flexible & Portable — compact footprint and multiple air distribution options.

Order the Flagro FVO-400 Today

Ensure consistent, reliable heating in any weather. For pricing, availability, and expert recommendations, contact
Climate Control Solutions at (800) 633-8711 or
[email protected].


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At Climate Control Solutions, we prioritize quality when it comes to spot coolers, portable heat pumps, and evaporative coolers. That’s why we collaborate with some of the industry’s most respected brands to offer you the finest products. Our selection features renowned names like Airrex USA, Big Ass Fans, Cajun Kool, Cool Boss, Flagro, and Master—brands celebrated for their excellence, innovation, and durability.

Flagro FVO-400 Indirect Fired Heater – 390,000 BTU heating with extended ducting and durable construction for industrial and construction applications.
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Flagro FVO-400 – 390,000 BTU Indirect Fired Heater

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