Garage heating: what a plug-in heater can honestly do

Where RapidHeat does work

• A small insulated workshop or hobby bench area up to about 12 m²
• An insulated single garage used as a workspace, with the door shut
• A garden shed or studio that has been insulated and sealed
• A partitioned corner of a larger garage
• Warming your hands and immediate workspace while you work

Where it does not

• Uninsulated garages with bare block or unsealed doors
• Double garages and large shops
• Any space where the door opens regularly
• Heating a vehicle or thawing an engine

Why the limit exists

A standard Canadian 120 V household circuit can only deliver so much power, and a garage loses heat through a large, poorly insulated door and slab. The physics does not care about marketing claims: a plug-in unit adds a modest amount of heat per hour, which a leaky garage sheds immediately.

For a large or uninsulated garage you want a dedicated 240 V unit heater or a vented gas heater, professionally installed. For a small insulated work area, RapidHeat is a genuinely good, cheap answer.

Workshop safety

• Plug straight into a wall outlet, never an extension cord or power bar
• Keep a metre of clear space in front of the grille
• Never cover the unit or use it to dry clothes
• Use the 1–12 hour timer instead of leaving it running unattended
• Overheat cut-out and tip-over shut-off do the rest automatically
• Keep it well away from fuel, solvents, paint and sawdust piles

The honest answer about garages

We sell heaters, and we are still going to tell you this: RapidHeat is not a garage heater. A typical Canadian single garage is 20–30 m² with uninsulated walls, an uninsulated door and a concrete slab that stays near freezing. A 1,500 W plug-in unit cannot keep up with that, and running it there will disappoint you.

For a garage you want a hard-wired 240 V unit, a propane or natural-gas heater with proper ventilation, or insulation work before any heater at all.

When a plug-in heater does help in a garage

• An insulated, finished garage workshop of roughly 12 m² that you have partitioned off
• Spot warmth at a workbench while you work, rather than heating the whole bay
• A garage that is already partly heated and needs topping up in one corner
• Taking the chill off a small insulated shed or bike room

What to buy instead for a full garage

For 20 m² or more of uninsulated space, look at a 240 V hard-wired garage heater of 4,000–7,500 W installed by an electrician, or a vented gas unit. Both cost more upfront and both will actually work.

Before spending on either, insulating the garage door and walls usually returns more comfort per dollar than any heater does.