Small single car heater

[bashr52]

I'm working on re-doing the small attached single car garage on a house I just bought. The plan is to use the garage as-is for the winter (in the middle of a restore project), and expand the kitchen/living space into the existing garage in the spring, and build a bigger garage/house addition. The garage is approximately 22x13.5x15. The house was built into a small rise on the lot, so the garage slab is actually 3 steps down from the house (which is why the extreme ceiling height). Our spare bedroom is above the garage, which was un-insulated and cold (which made that bedroom cooler than the rest of the upstairs).

I have insulated all the walls, replaced the back door to the porch with a new insulated steel exterior door, and am working on sealing off all the cracks around the overhead door. There is a heat duct under one of the panels in the ceiling for the bedroom, but due to the age of the house and the way they ran the ducts, the heat in this room is already questionable. I considered tapping into this to put some heat in the garage, but I'm afraid that would really cut down the heat available in that bedroom (although I have thought about installing a booster fan in that duct).

Any suggestions on heating for this space? We do have NG. The exterior of the house and garage is solid brick, so drilling through for a vent is not something I have considered yet.....

 

[theoldwizard1]

NG wall heater/furnace. Not too expensive and you might even find one on CL. Probably the lowest cost of operation.

Yes, you will need to make a hole in the wall.

 

[DPelletier]

1) having the garage connected to the house HVAC system is against code in every jurisdiction that I'm aware of.

2) stealing CFM from that bedroom will make your problems worse.

3) it's a relatively small space, so heating it is the best option. Sure, if you have NG that's likely the cheapest way to go from an energy consumption perspective, but you'll be waiting a loooooooong time to save enough energy to pay for the heater, gas lines, permits and venting. Personally, I'd consider an electric resistance heater (unit heater, wall heater or baseboard) depending on useage and ambient conditions.

Dave