Can I use factory RV ducting with Autoterm diesel heaters?
Published 08/11/2025
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Question:
I have a 2002 Bigfoot camper with propane furnace ducts. Can I tie the Autoterm Air 4D into those, or should I run new ducts? I don't want to use propane anymore and my furnace is temperamental
asked by: MIke
Expert Reply:
Great question, Mike. You’ll want to run dedicated ducting for the diesel heater. The Air 4D needs 90mm ducting, and factory ducts are usually too large or sealed, which can cause performance or safety issues.
These heaters work best with short, direct runs using Autoterm’s included ducting. We can help you sketch out the airflow layout if you’d like. Everything necessary for installation and setup is included in these kits:
-Autoterm Travelbox 2.0 Heater # AU36MR (portable)
-Autoterm Air 2D 12v Air Heater Kit # AU56MR (permanent install)
-Autoterm Air 4D 12v Air Heater Kit # AU96MR (permanent install)
What exactly is going on with your old furnace? Are you sure it is not able to be repaired? Might save you a few bucks.
Product Page this Question was Asked From
Autoterm Diesel Travelbox 2.0 Portable Camping Heater
- RV Heaters
- Diesel Heater
- 12 Volts
- Interior Heating
- Camper Van
- Teardrop Camper
- Truck Bed Camper
- Autoterm
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