Garage heater?

[Rank]

In my opinion you should give the whole install to the plumber or HVAC dude. In addition to the gas line he also needs to run the venting and control unit. The guy is expected to assume liability (once he touches it he "owns" it LOL) for the whole unit and he is going to be less reluctant to do so if the project gets "contaminated" by someone elses involvement. .... there is too much that could go wrong.

Help him out with the install and maybe next time you will be comfortable doing it yourself .... or, at least, appreciate NOT doing it yourself. Do the clean-up and hauloff and you will surely save money.

Thats a good looking unit and priced right but might be oversized for your needs. How big is your shop?