Excessive Heat to Exhaust?

[MDJAK]

I've posted in another thread the small garage I just built for my 911. It's only 22 x 12 with an 8' ceiling. It was originally an overhang which we poured footings and foundation for with new slab, exterior plywood, Hardyplank siding, R30 or so insulation in ceiling and walls.

It has 2 regular size windows and an 8' garage door.

If I pull my 911 in right after a drive, the heat it gives off makes the garage really hot. I've taken to leaving the car out for a few hours before pulling it in.

However, the other day I decided to get an exhaust fan for one window. I wish I had put a fan through the roof but it's too late now.

Well, the Bionaire fan I got was from Costco and it's getting returned.

1. It didn't fit in window well at all. Really sucked in fact.

2. There's nothing that would stop flying insects from going right through the grate.

So what are my choices? I have one of those indoor rolling air conditioners I don't use but that seems a bit overkill, especially on the electric bill.

I searched Amazon and saw a fan that has a storm guard, which I think was described as the ability to close the window in front of it in case of a storm.

Thanks for helping me with options.

 

[Docbentley]

Just leave it outside the garage for a while after you get home---use this time to clean the dust, bugs, road grime, etc before putting your baby up.

 

[58Yeoman]

Could've put a window screen over the fan?

 

[CombatNinja]

The best option might be a through the wall exhaust fan that is controlled by a thermostat. The issue there is depending on how the room is sealed, you could very well end up pulling hotter air down from the ceiling once you get a powerful fan cranking. This is the same problem people create when they put powerful gable vent fans in their attics: the fan ends up pulling conditioned air up through the walls of the house because it outstrips the ability of the soffit vents to provide air. If you go this route, be careful with your sizing as that garage bay is tiny and you could very easily cause this if your garage door is well sealed.

Do your windows in the garage have screens? Maybe the best thing to do is pull the car in, crack the windows, leave the garage door open for an hour while running a powerful fan? I mounted a "dock fan" to the angle iron of my garage door openers for this purpose. My 911 does the same thing to my garage so I feel your pain.

 

[LXCam]

If you really want to get fancy you could use a line voltage thermostat to control the fan.


https://www.zoro.com/hessaire-shutt...7UCkzUqpH2fnBnhvEm0t5PYJDZ5-NN-RoCekoQAvD_BwE

 

[wssix99]

I have the same issue, discussed at length in this thread: https://www.garagejournal.com/forum/showthread.php?t=337783

Check out Modern Jess' fan controls. They seem to be the perfect solution for this type of situation. (Engine heat introduced into an insulated garage.) The controls allow one to turn a regular fan into an economizer.

It's amazing how much heat the engine brings in. I recall calculating (it may be in my thread) the heat contribution and it was like building a fire in a fire place and burning wood in the garage for several hours!

 

[MDJAK]

Thank you all. I will read and reread your suggestions and visit the links.

Foolishly I skimped on the windows and did not match the existing windows in the house, so no screens or whatever those plastic dividers in the windows are called.

I hear you on the attic fan. We have one but never use it. I feel if it’s in the 90s outside all I’ll be doing is drawing hot air through an already hot attic. I never thought about what you say, that it can pull air conditioned air up through the ceiling and walls. That’s even worse.

 

[MarlynOC]

Where are you pulling air in from the outside?