Space heater won't turn on

Symptoms

• No lights, no fan, no heat when switched on
• Outlet may power other devices fine
• Heater may have shut off suddenly during previous use

Likely causes

• CommonOutlet not providing power or is on a tripped GFCISpace heaters draw a lot of current and can trip a GFCI outlet or a shared circuit.
• CommonBuilt-in tip-over safety switch engagedMost modern heaters won't turn on unless they're sitting perfectly level and upright.
• PossibleOverheat safety switch tripped from previous useIf the unit overheated, it may need time to cool before it will restart.
• PossibleDamaged power cord or plugA frayed or damaged cord can interrupt power intermittently or completely.
• Less commonInternal component failureAfter ruling out power and safety switches, an internal fault may need professional repair or replacement.

What to do

1. Plug the heater into a different outlet you know works, and avoid extension cords, which many heaters warn against.
2. Reset any tripped GFCI outlet or breaker.
3. Place the heater on a flat, level, hard surface and make sure it isn't tilted, which triggers the tip-over switch.
4. Let the heater cool for 15–30 minutes if it shut off suddenly during use, then try again.
5. Inspect the cord for cuts, fraying, or a loose plug, and stop using it if you find damage.
6. If it still won't turn on with a good outlet and no visible damage, the heater likely needs replacement rather than repair.

When to call a pro

Space heaters are generally not economical to repair; replace it if basic checks don't solve the problem.

Safety