A cylindrical metal heater with a wide bottom, made of metal

The Complete Guide to Choosing a Garage Heater

Radiant heat feels the warmest because it warms the person rather than the air. Forced air feels good but wastes energy on heating air that quickly gets cold again. Convection heat feels good so long as it’s close to your body. Electric heat is expensive to run but requires no ventilation. Natural gas is only slightly cheaper than electricity. Propane is competitively priced. Electric heat does not require ventilation, while propane and natural gas do require ventilation.