I’m currently building a diesel heater for my truck camper. You should consider adding another vent closer to the ground to recirculate warm air through the heater, rather than constantly pulling in cold air from outside. This would greatly improve the heater’s efficiency and help balance the air pressure. Additionally, you could install an air filter, giving you both heat and cleaner air.
stack sats and learn how to build an off-grid cabin...?
https://video.nostr.build/a584615d7a167ea94bc6b3c66405fba0a3b3748710a3b0d5ab87b2a84e8105a8.mp4
Discussion
You can also try to capture the heat from the exhaust and use it to heat water.
yeah I heard about doing a split! good suggestion. for water heating I am thinking solar tubes on the roof since it's passive. works 3/4 seasons up here from what I hear... any experience with this?
Yes, my brother-in-law built a solar water heater in Brazil using corrugated panels—it worked great. It was a fun DIY project, but it didn’t last long. If you’re going to build one, it’s best to use materials that will last a long time.
Regarding the diesel heater, if you don’t want to cut another hole, you could buy a diesel heater kit and install it inside, using the existing hole for the exhaust and fuel line. That’s how it’s typically installed in vans and RVs. Keep the portable heater as a backup. Also, for safety, it’s a good idea to upgrade the fuel line and fuel tank.