Garage Heating Guides
Short, practical answers about heating a garage, with real numbers from the garage heater calculator instead of rules of thumb.
Choosing a heater
Which kind of heater fits your garage, your fuel and how often you use it.
Best way to heat a garageSix heating methods ranked by what they cost to run in your garage.
Electric garage heatersWatts by garage size, 120V versus 240V, circuits and running cost.
Propane garage heatersBTU input by garage size, tank run time, venting and fuel cost.
Natural gas garage heatersInput BTU by garage size, venting, gas line work and running cost.
Sizing
How much heat your garage needs, by car count, square feet and building type.
- 1-car garage heaterWhen a plug-in heater is enough and when it is not.
- 2-car garage heater20 × 20 versus 24 × 24, in BTU and watts.
- 3-car garage heaterWhere electric runs out and gas takes over.
- Garage heater size chartBTU by garage size, insulation and square feet.
- Shop heater BTU calculatorWorkshops, pole barns and metal buildings.
Heater sizes
Costs
What a heater costs to run each winter and what it costs to put in.
Gas vs electricSafety
What to know before you burn fuel in a closed garage.
Ventless garage heaters