Come up on a different issue. My job has me on acreage that does not allow a trailer. There is a 25x40 metal building, large enough garage door to back my trailer in. Not the most scenic camp spot, but it is allowable. Obviously when winter comes I will have to figure out venting, but for the summer, can I run my A/C in the garage? Is there enough air volume to exchange heat?

Depends on the ventilation in the pole barn. If it's sealed up, it can have a hot box effect and running the air/con could compound that making it difficult to cool the RV. If you can leave the garage door open or there is a large exhaust fan removing the attic air, it might be viable. Have you checked out how hot it is on a hot day?Sounds like you have it but winter furnace operation is a much different issue.

Thanks for the reply, yes I could leave the door open, and I do need to check the temp during the day. I'm in Texas and I would imagine it is pretty hot in the middle of the day inside. Having said that I have gone in mid day and it was not melting temp inside, though I did not take the temp. No vent on the roof of the building, and other than the garage door, one door and one window. I guess I could hang a fan to move air inside the building. Yes, in the winter all bets are off, I know better than to crank up my furnace in a 3 sides closed area.

AS the other posted stated, if you have a closed Building that is not at least 2000 sq ft, you will have overheat in the garage. The roof top unit removes the HOT air from the outside Condensor and dissapates it into the open air. If in a garage, then their is no place for that hot air to go and after awhile the AC cannot remove the hot air from the Condensor. So, just leave a door and a window open in the building and you should be OK Having a small Box fan blowing air out of the garage will be useful too. Doug

2x, Doug. "Having a small Box fan blowing air out of the garage will be useful too."

yes. You will notice auto repair shops running the office AC and blowing it into the bay, even in really small bays like your barn. Best if there is a roof vent that can let the hottest air out, but the walls and ceiling of the barn will be as big of a heat sink as the AC blowing hot air, but I would keep a window wide open or the door cracked. you will have power to plug into I assume, so at worst the compressor will just run more. Somehow people in 120 degree deserts still run their ACs with some cooling effect.

A/C in a garage? | Good Sam Community

mr_andyj
Explorer
Aug 14, 2020
yes. You will notice auto repair shops running the office AC and blowing it into the bay, even in really small bays like your barn. Best if there is a roof vent that can let the hottest air out, but the walls and ceiling of the barn will be as big of a heat sink as the AC blowing hot air, but I would keep a window wide open or the door cracked. you will have power to plug into I assume, so at worst the compressor will just run more. Somehow people in 120 degree deserts still run their ACs with some cooling effect.
Lwiddis
Explorer II
Aug 14, 2020
2x, Doug. "Having a small Box fan blowing air out of the garage will be useful too."
dougrainer
Nomad
Aug 14, 2020
AS the other posted stated, if you have a closed Building that is not at least 2000 sq ft, you will have overheat in the garage. The roof top unit removes the HOT air from the outside Condensor and dissapates it into the open air. If in a garage, then their is no place for that hot air to go and after awhile the AC cannot remove the hot air from the Condensor. So, just leave a door and a window open in the building and you should be OK Having a small Box fan blowing air out of the garage will be useful too. Doug
frscott61
Explorer
Aug 14, 2020
Thanks for the reply, yes I could leave the door open, and I do need to check the temp during the day. I'm in Texas and I would imagine it is pretty hot in the middle of the day inside. Having said that I have gone in mid day and it was not melting temp inside, though I did not take the temp. No vent on the roof of the building, and other than the garage door, one door and one window. I guess I could hang a fan to move air inside the building. Yes, in the winter all bets are off, I know better than to crank up my furnace in a 3 sides closed area.
valhalla360
Navigator
Aug 14, 2020
Depends on the ventilation in the pole barn.

If it's sealed up, it can have a hot box effect and running the air/con could compound that making it difficult to cool the RV. If you can leave the garage door open or there is a large exhaust fan removing the attic air, it might be viable.

Have you checked out how hot it is on a hot day?

Sounds like you have it but winter furnace operation is a much different issue.

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