I'm planning to install a through-the-wall air conditioner in my shop, mostly to control the humidity although I won't mind some cooling on those August days in the upper 90s. I live in Cincinnati, Ohio. The garage is 26' wide (facing south) and 36' deep with a 12' ceiling. There are steps up the back to the second floor which is 19'x36' with an 8' ceiling. I'm not worried about cooling the second floor, but don't know enough to know whether that extra space will be a factor. On the south wall, there is a man door and an insulated 16'x9' garage door. There are 4 2'x3' windows on the east wall located 8' above the floor. The west wall has one 2'x3' window located above a man door. The walls are 2x6 construction with r-19 insulation in them as well as in the walls and ceiling of the second floor. There are also two ceiling fans in the garage. I plan to place the unit in the north wall, thinking about 8' up the wall. The sizing charts lead me to be thinking about the 25,000 BTU Frigidaire unit, but with the insulation and lack of direct sunlight into the shop, I'm wondering if that is too much. The garage does stay surprising cool during the summer, but the humidity is a bear. I'm wondering if that size unit will run enough to take out the moisture.
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AC Sizing Mostly for Humidity Control
- Thread starter dtep
- Start date
LS6 Tommy
Well-known member
Most of the load an A/C unit carries is dehumidification. Even though most window unit calculators line up with your numbers, keep in mind, the airflow from a window unit isn't the best. With your ceiling fans distribution should be better.
Tommy
Tommy
justinjoyal
Well-known member
A/C is really not good for controlling humidity, especially if it's hooked up to a thermostat.
Ehh ? A/C is excellent at getting rid of excess humidity..
I'm talking about a window air conditioner mounted through the wall instead of in a window. I don't want to spend the extra money on a mini-split because I already have a radiant tube heater for the cold months. When I built the shop, I ran electric for a through the wall AC setup just in case it was too hot to work in there in the summer. The insulation does a great job of keeping it cooler in there than outside, but it is noticeably more humid in the shop than outside and the humidity is causing mildew on the interiors of our late 60's Camaros.
hbus1300
Active member
I'm talking about a window air conditioner mounted through the wall instead of in a window. I don't want to spend the extra money on a mini-split because I already have a radiant tube heater for the cold months. When I built the shop, I ran electric for a through the wall AC setup just in case it was too hot to work in there in the summer. The insulation does a great job of keeping it cooler in there than outside, but it is noticeably more humid in the shop than outside and the humidity is causing mildew on the interiors of our late 60's Camaros.
Might want to put some desiccant packs in those cars. Just an example here. https://www.griotsgarage.com/product/storage+desiccant+bags.do