Garage Heating Solutions?

If you plan on doing any type of major work out there on a frequent basis, I HIGHLY suggest looking into a radiant tube heater. The type of heat put off is compared to that of the sun (radiant), and as such…there is no need to heat the air up directly. Instead, all of the objects in the room are heated indirectly which then radiate the heat back out. This means the temp can be 55* yet, you'll find yourself working in your T-shirt and sweating your ass off after working for a an hour. They are MUCH more efficient and are FAR less prone to heat losses associated with air leaks, poor insulation and a garage door that frequently get's opened and closed. Another bonus is that it doesn't blow dust and dirt everywhere and has a sealed combustion chamber which draws fresh air in from the outside and exhausts it back out. Anytime you vent the exhaust gasses back into the same room you are heating, you are prone to major condensation on everything within the room. Likewise, you want to avoid frequent heating and cooling above and below freezing. Basically, you'll be dumping water into the air as a result of combustion and all of the water will condense onto objects in the room when then temp reaches the dew point.

FYI, last winter I kept my 1000sq Ft garage at 45* (in Mid-Michigan) at all times (which is long pant's and sweatshirt comfortable). When I wanted to go out and work for more than 30 minutes, I'd crank it up to 55*. My average gas bill increase was around $50/month…not bad considering I was unemployed and spent many a day's in the garage working on things.

I apologize for bump the old topic, but I have some interesting observations that I would like to share, maybe this will help someone in the future because once I was on the lookout for useful advice.
I don't have any direct experience, but as someone shopping for his first single family home, I have been trying to educate myself on home construction and remodeling. What I've heard is that in-floor radiant heating is a lot more efficient than forced air, with the down side being that it takes longer to bring up the temperature.
In floor is the best, insulate under the slab, and thermal break the foundation (if applicable)
Second i like patio heaters https://patiotip.com/best-patio-heater if youve got the ceiling height.
Third is plain old forced air, and id insulate the 2nd level seperate if your going to have it at 2 temperatures. You could use a mini split heat pump for your upstairs. AC is nice for the office, insulation wise, i like roxul r19 walls r60 attic. Could go with r19 batts in walls/cdiling then blown in cellulouse, just do a good job with your vapor barrier as its important. If youve got the money i would do closed cell spray foam but just butter the ceiling then cellulouse on top. Your overhead doors will be your main loss, and keep a close eye on weather stripping.
There are a lot of useful videos on this subject on Youtube, I'll leave one here, Hope this helps someone. Good luck!
View: https://www.youtube.com/watch?v=LLumJT_v5_8