What are Indirect Fired Heaters?

Indirect Fired Heaters produce heat through a heat exchanger. The heat exchanger heats the air as it passes over, expelling clean, breathable air. It keeps combustion by-products inside and exhausts them out.

Our line of indirect fired heaters produces between 175K BTUs and 588K BTUs and serves various applications.

For instance, our indirect diesel heater selections include the BT-400NEX-D, The All-In-One HPL 600D7 and the astonishing recirculating indirect diesel heaters, the BT Blaze 400D Turbo and 600D Turbo.

Our Indirect Diesel Fired Heaters

Major airlines worldwide, along with the Canadian and US military, rely on the BT 400NEX Series of indirect fired heaters. Fun fact—one of our earlier BT-400 heaters appeared in a scene from my favorite Marvel movie, released in April 2019.

The BT400 NEX-D is highly portable in which a single person can lift and move the heater with little force. Additionally, this indirect heater can operate for up to 14 hours, discharging clean hot air where and when you need it. You can duct this unit up to 30 feet to direct the heat where needed.

The HPL 600D7 is another excellent indirect heater that produces 588K BTUs of clean, breathable air. This unit is a bit different from the BT400 NEX-D. For starters, the HPL 600 D7 combines three essential tools commonly required on many job sites. These tools include an indirect fired heater, bright L.E.D stadium lights on a tower that extends up to 23ft into the air and a power generator that makes the HPL completely stand-alone.

This unit can be placed in the most remote locations where power, heat and light are not readily available. This indirect heater is diesel-powered and can operate up to 19 hours on full load. One great feature of this unit is its indirect fired heater with recirculating capabilities. This means that HPL can recycle the hot air it produces. The heater generates heat, expels clean hot air, recirculates it, re-heats, and discharges it again. This cycle helps reduce the amount of fuel and energy used, which equals money savings.

The HPL600D7 uses the same recirculating indirect fired heater as the separately sold BT Blaze 600D Turbo.

The HPL 600D7 dimensions are 135″ L x 95″ W x 108″ H, while the BT Blaze 600D Turbo measures 76.7” L x 31” W x 57.6” H. There is a noticeable difference in size between the two units.

Both the BT Blaze 600D and 400D Turbo are indirect diesel heaters with recirculating capabilities. They can reuse the heat they produce, leading to significant cost savings.

Another key feature is ducting capability. You can duct the heater up to 150 feet from the heated location.. For full recirculating mode, the inlet ducting can extend up to 50 feet from the desired location.

The BT Blaze 600D Turbo delivers a maximum temperature of 200°F (93°C) with an air delivery rate of 5,500 CFM.

The BT Blaze 400D Turbo delivers 399K BTUs, 200°F (93°C) max temperature, 5,500 CFM air delivery, and 3″ static pressure. Like the BT Blaze 600D Turbo, it features a stainless steel heat exchanger, Beckett burners, a digital readout, and 8.5-amp usage.

We offer a wide selection of indirect fired heaters worldwide. Aerotech Herman Nelson has been shipping heaters to the most remote locations globally, from Alaska’s tip to the Antarctic. We have the experience to get the heater you need. We have shipped heaters to almost every location on every continent on earth.