Featured Heater
3-in-1 Herman Nelson Recirculating Heater
588,000 BTU/h
RUN TIME: 19 Hours at 100% Load
BT400 NEX SERIES CATALOG
Canada-built, field-proven, and trusted across aviation, construction, and oil & gas — the BT400 sets the standard for indirect heat
BT400 NEX-D
Indirect Fired Heater
400,000 BTU/h
ON SALE (August 1 - August 31, 2021)
3% Off Season Discount
| Fuel Type | DIESEL |
| Heating Capacity | 400,000 BTU/h |
| Maximum Air Delivery Rate | 1,500 CFM |
| Run Time | 14 Hours |
| Dimensions | 71” L x 50” W x 48” H |
BT400 NEX-G
Indirect Fired Heater
400,000 BTU/h
ON SALE (August 1 - August 31, 2021)
3% Off Season Discount
| Fuel Type | GAS |
| Heating Capacity | 400,000 BTU/h |
| Maximum Air Delivery Rate | 1,500 CFM |
| Run Time | 8 Hours |
| Dimensions | 52” L x 21” W x 27”H |
Important Pricing Update
Starting January 1, 2026, pricing for the Herman Nelson BT400 NEX-D and BT400 NEX-G heaters will increase by 3.5%.
This adjustment comes from increased manufacturing and material costs — and is part of our commitment to continue building heaters that perform in the toughest conditions without cutting corners.
If you want to secure 2025 pricing:
- Place your order before December 31, 2025
- Provide order confirmation + prepayment
Once that’s done, your price is locked in — even if the heater ships later.
🔗 BT400 NEX-D: https://hermannelson.com/bt-400-nex-d-series-2/
🔗 BT400 NEX-G: https://hermannelson.com/indirect-fired-heater-bt400-nex-g/
⚙ Why This Matters for Operations & Budget Planning
This isn’t just about price — it’s about timing.
- Many operators finalize equipment purchases before fiscal year-end.
- Heater demand spikes right after the first cold snap.
- Lead times and shipping extend during peak months.
- A confirmed order today often means guaranteed delivery and locked-in pricing tomorrow.
In short: buying early isn’t about spending more — it’s about avoiding delays, downtime, and higher costs later.
BT400 NEX-D
Indirect Fired Heater
400,000 BTU/h
ON SALE (August 1 - August 31, 2021)
3% Off Season Discount
| Fuel Type | DIESEL |
| Heating Capacity | 400,000 BTU/h |
| Maximum Air Delivery Rate | 1,500 CFM |
| Run Time | 14 Hours |
| Dimensions | 71” L x 50” W x 48” H |
BT400 NEX-G
Indirect Fired Heater
400,000 BTU/h
ON SALE (August 1 - August 31, 2021)
3% Off Season Discount
| Fuel Type | GAS |
| Heating Capacity | 400,000 BTU/h |
| Maximum Air Delivery Rate | 1,500 CFM |
| Run Time | 8 Hours |
| Dimensions | 52” L x 21” W x 27”H |
Explore the Power of Precision Heating
Download Our Detailed Brochures for the BT400 NEX-D and BT400 NEX-G Models and Discover Your Perfect Heating Solution
THE BT400-NEX SERIES OF INDIRECT FIRED HEATERS
Construction Site Heaters, Aircraft Engine Preheaters, Indirect Diesel & Gas Heater
The BT400-NEX Series of indirect fired heaters are used in commercial aviation, construction and exploration. In these industries, safety is not just a concern but is a requirement for any manufacturer producing a modern heater.
Click below and download our Executive Summary and learn why the BT400-NEX Series of heaters are the number 1 choice of so many industries.
HELP ME CHOOSE
Comparing Indirect-Fired Heating Solutions?
Understand how indirect-fired heaters compare across airflow, ducting, deployment speed, and enclosed heating applications.
