A ceiling heater powered by natural gas or propane. Previously had the torpedo heater, in both propane and kerosene, was never happy with them. The electric heater base heater never had the ability to warm everything up. The kerosene/ propane fumes were horrible and roar of the flame.
Love the ceiling unit I have, so nice to work on a warm car in a tshirt in February.
A mr heater big maxx 50k ceiling heater that runs off of propane or ng is on sale at northern tool for 350 plus they are giving out 50 dollar gift cards for purchases over 250.
Next get the B vent exhaust pipe from Lowe’s if you can run the exhaust vertical and flexible stainless gas line or iron pipe if the layout allows. Vertical venting is better because the fumes are pulled out and u save a nice amount on the pipe cost. If you need to run the vent horizontal, you need to upgrade to stainless steel Exhaust pipe and will need to find another store or online.
Next Is a larger propane tank, not sure what it cost. But it is worth it.
Costs
375 heater +tax + 40ish shipping.
100-150 B vent exhaust pipe, iron fittings, pipe dope and gas line.
Propane tank and delivery? No idea
Cost for a prof to check everything and ensure local codes were followed. Cheap to make sure you are safe.
This style heater is amazing, no smell. I turn mine on for a couple of hours with a small on the ground fan blowing air toward the back of the heater and everything in the garage is warm. Lots of you tube videos on installs and resources on GJ to make your budget.