1 (800) 486-4328 // 1 (204) 633-1999
Aerotech Herman Nelson Heaters Intl. Inc.

Featured Heater

3-in-1 Herman Nelson Recirculating Heater

588,000 BTU/h

RUN TIME: 19 Hours at 100% Load

BT400 Series Aircraft Engine Preheater certified for extreme cold temperatures, operating below -40°F/C, and certified by O-TL to UL 733-1993 standards.

BT 400NEX SERIES – Portable Indirect Fired Diesel & Gas Fired Heaters

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BT 400NEX Series Indirect-Fired Heaters – Portable & Powerful

The BT 400NEX Series Indirect-Fired Heaters are designed for extreme cold environments, providing clean, breathable, and efficient heat wherever needed. Engineered for reliability, durability, and high performance, these portable indirect-fired heaters are trusted by the US and Canadian military, major airlines, and industries worldwide.

BT400 NEX-D5 – Portable Diesel Indirect-Fired Heater

🔥 400,000 BTU/H – Diesel Engine Driven
🔥 Temperature Range: 150°F – 250°F

The BT400 NEX-D5 features a high-efficiency stainless steel heat exchanger, ensuring 100% clean, breathable air by venting all combustion gases through the exhaust stack. This makes it ideal for aircraft cabins, engines, buildings, and job sites. Designed to withstand temperatures below -40°F (-40°C), this unit can also be safely operated indoors when properly vented.

Certified by O-TL to UL 733-1993 & CSA Standards
Reliable in extreme weather conditions
Portable and efficient standalone heat source

BT400 NEX-G2 – Portable Gasoline Indirect-Fired Heater

🔥 Gasoline Engine Driven – Honda 5.5 HP Engine
🔥 Temperature Range: 150°F – 250°F
🔥 Heat Rise: 350°F

The BT400 NEX-G2 is designed to burn gasoline efficiently, delivering consistent performance even in extreme cold (-40°F/-40°C and below). With a heat rise of 350°F, it ensures optimal heating performance even in sub-zero temperatures. Originally introduced in 1973, the Herman Nelson heater has continuously evolved, featuring full electronic temperature controls and upgraded valves since 2010 for greater reliability and ease of use.

Trusted by military and aviation industries worldwide
Built in Canada for rugged winter conditions
Proven reliability with ongoing technological advancements

Why Choose the BT 400NEX Series Indirect-Fired Heaters?

Extreme Cold Performance – Designed for harsh environments
100% Clean Heated Air – Safe for enclosed spaces
Certified & Compliant – Built to industry-leading standards
Portable & Powerful – Reliable heat wherever it’s needed

🔥 Don’t let the cold slow you down. Get your BT 400NEX Series Indirect-Fired Heater today! 🔥

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Featured Heater

Herman Nelson 3-in-1 Indirect Fired Heater

2024 - 2025 Holiday Business Hours

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DECEMBER 24 [Open 8:00am – 12:00pm CDT]
DECEMBER 25 [CLOSED]
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DECEMBER 27 [OPEN 8:00AM – 4:30PM CDT]
DECEMBER 30 [OPEN 8:00AM – 4:30PM CDT]
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JANUARY 1 [CLOSED]
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Regular Business Hours
MONDAY – FRIDAY 8:00AM – 4:30PM CDT

we look forward to seeing you in the new year!

Indirect Fired Heater Manufacturer

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