How to Install a Garage Heater in 6 Steps

Your garage heater will work best mounted to the garage ceiling in the coldest part of the room (usually the corner of two outside walls). It should be angled toward the middle of the room. To provide the right support for your heater, secure the 2x4-inch boards to the studs in the ceiling using lag bolts.

Using your tape measure, measure the width of the heater. Mark a line where the heater will go and attach your heavy-duty eye hooks on the 2x6-inch boards on either side of the line. This step will help secure your straps later on.

Enlist a friend or use a set of pulleys to help lift the heater to the ceiling. (You’ll need to hook a strap on to each eyehook if you use a pulley system.) Once it’s near its desired position, take your tie-down straps and hook them onto each eye hook, then wrap them around the heater to secure the heater in place. Bolt its brackets to the 2x6-inch boards with lag bolts, then carefully remove the straps to ensure the heater is secure.

Make sure your main gas line is turned off and connect the gas supply line to your heater. Now you can use plumbers tape to seal the threaded connections. You’ll also want to install a shut-off valve for maintenance purposes.

Assuming venting is required, install the vent pipe according to the directions in your owner’s manual or the manufacturer’s instructions. The venting will need to be unobstructed so that gasses can exhaust out of the garage whenever necessary.

Ignite the heater to check that it’s working properly and pushing heat into your garage. Be alert for any unusual sounds or smells. If a thermostat is included, check that it’s also operating correctly. Once everything seems to be up and running, enjoy your new, cozy space.