How to Heat and Cool Detached Garages

A detached garage.
What You'll Need
Heating/Cooling conditioner-in-1 system
Fiberglass insulation
Drywall mud
Drywall tape
Drywall nails
Putty knife
Utility knife
Tape measure
Caulking gun
Indoor/Outdoor extension cord
Staple gun
Plastic sheeting
Wire shrink wrap
Hair dryer

Detached garages are very popular due to their versatility. Detached garages can be used for all kinds of purposes, from parking a vehicle to doing hobbies such as woodworking, art, or gardening. To save money, not many people fit their garages with electricity, which means no heating or cooling. If you’re spending a lot of time in this space, then being able to control the temperature is important. Follow the simple steps below to effectively heat and cool a detached garage.

Step 1 - Insulate

Insulation helps maintain temperatures and keep costs down inside detached garages. Place fiberglass insulation between the studs to cover floor to the ceiling. Cut the insulation with the utility knife to make them fit or to fill gaps. Staple the paper to the studs. Cover the wall with plastic, stapling it to the studs and overlapping sections. Cover the top, bottom, and ceiling joists. Repeat this procedure for the roof.

Step 2 - Add Drywall

Place a sheet of drywall on the wall so that each side is in the center of the studs, and then affix with drywall nails. Place a nail every foot. Continue until you cover the walls and the ceiling. If you need to cut drywall, score the paper and then snap the drywall. Apply drywall tape over all the seams, and then cover nails with mud. When the mud dries, you can sand it down flush with the drywall.

Step 3 - Seal

Cut the tip off the silicone and insert it into the caulking gun. Apply caulk around the window frames and around any outlet or junction boxes. Do this on the outside of windows, too. This helps limit air coming in and leave detached garages.

Step 4 - Install Heating and Cooling

Use a system that produces cool air and hot air. They are more effective for your needs and less expensive in the long run than using a heat pump, central air or other systems. Place the unit inside a window and make sure it is seated properly and that the cord is outside. Apply caulk around the unit.

Step 5 - Hide the Cord

Plug the cord of the heating and cooling unit into the extension cord. Wrap the length of the cord from the system to the prong with the shrink wrap and then use the hairdryer to heat it. The wrap will create an airtight seal around the cords. Pull the cord so that it is straight down the exterior wall and staple in place being careful to not puncture the rubber casing. Do this until the cord is at the base of the detached garage. Dig a shallow trench from the base of the detached garage to the external outlet of the home. Place the cord in the trench and then bury it as you go, plugging it in at the end.