Garage Gym Climate Control: What to Fix First

Garage gym climate control in order: stop water, seal and insulate, size heating or cooling from the shell, then control damp. A US planning guide.
Climate guides for garage and home gyms, starting with heat. They size the heater in BTU, check what a space heater needs from a garage circuit, and compare propane with electric heat.

Garage gym climate control in order: stop water, seal and insulate, size heating or cooling from the shell, then control damp. A US planning guide.

Garage gym air conditioning compared: window, portable, mini split and evaporative coolers by garage size, insulation and power, and when each fails.

How to cool a garage gym without AC: size fans by CFM, place them, add shade, and check the dew point before opening the door or running a fan.

Mini split for garage gym: see which size fits a one- or two-car garage, how winter heat and summer cooling loads compare, and what to tell an installer.

Does gym equipment rust in a garage? See how damp air, cold steel and slab moisture cause it, which parts rust first, and when to retire a part.

Dehumidifier for garage gym: check humidity and dew point, estimate the daily moisture load, plan the drain, and see when sealing or airflow will do.