# Heat, Air Conditioning, Fans

**URL:** https://diyrvforum.com/c/diy-rv-area/heat-air-conditioning-fans/13.md

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## [About the Heat, Air Conditioning, Fans category](https://diyrvforum.com/t/about-the-heat-air-conditioning-fans-category/25)

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**Author:** [@Matt](https://diyrvforum.com/u/Matt)\
**Replies:** 0

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Category for design, installation, and maintenance of RV heat and air conditioning systems to include fans and air circulation.

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## [Eberspacher Airtronic M Gas Furnace Error Codes](https://diyrvforum.com/t/eberspacher-airtronic-m-gas-furnace-error-codes/319)

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**Author:** [@Matt](https://diyrvforum.com/u/Matt)\
**Replies:** 0\
**Last updated:** [May 20, 2026, 3:55pm UTC](https://diyrvforum.com/t/eberspacher-airtronic-m-gas-furnace-error-codes/319 "2026-05-20T15:55:02Z")

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We have a Eberspacher Airtronic M Gas Furnace, running on solid 12 volt batteries, that generates an “Err” on the display, and shuts off. The heater works. It will go through the full startup process and run for a few …

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## [Maxxair Fans, Low-power Air Circulation](https://diyrvforum.com/t/maxxair-fans-low-power-air-circulation/113)

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**Author:** [@Matt](https://diyrvforum.com/u/Matt)\
**Replies:** 2\
**Last updated:** [March 27, 2025, 8:41pm UTC](https://diyrvforum.com/t/maxxair-fans-low-power-air-circulation/113 "2025-03-27T20:41:03Z")

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Simply circulating the air can have a significant impact. We purchased two fans for this purpose. We also did the installation ourselves in about 3 hours. See Matt’s personal blog for specific supplies and tools. We …

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## [Eberspacher Airtronic M Gas Furnace](https://diyrvforum.com/t/eberspacher-airtronic-m-gas-furnace/112)

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**Author:** [@Matt](https://diyrvforum.com/u/Matt)\
**Replies:** 0\
**Last updated:** [February 2, 2021, 1:00pm UTC](https://diyrvforum.com/t/eberspacher-airtronic-m-gas-furnace/112 "2021-02-02T13:00:44Z")

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We wanted to keep things simple and this is done by avoiding propane, diesel, and kerosene, the furnace runs on the same gas tank that operates the engine. Airflow is 55 CFM. The volume of the van is just under 500 cubi…

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## [Espar-Webasto Furnace Install](https://diyrvforum.com/t/espar-webasto-furnace-install/67)

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**Author:** [@RV-Builder](https://diyrvforum.com/u/RV-Builder)\
**Replies:** 0\
**Last updated:** [May 28, 2023, 8:54pm UTC](https://diyrvforum.com/t/espar-webasto-furnace-install/67 "2023-05-28T20:54:11Z")

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My Espar D2 furnace is installed directly behind the driver’s seat. I created a foot rest and put the furnace inside. The space is fairly large but the only thing in there is the furnace and any excess cable. These fur…