3 Reasons to Never Use an Extension Cord With a Space Heater

Space heaters draw far more current than lamps or phone chargers, and most extension cords are not rated for that load. A warm plug means you are overloading the cord, which creates a fire risk.

The heat you feel comes from electrical resistance, which can melt the plug, the outlet, or the wiring inside your wall. A warm plug is not normal—it is a warning sign.

The safest option is to plug the heater directly into a wall outlet. If you must use an extension cord, choose a heavy-duty 12-gauge cord rated for at least 15 amps, and check that it stays cool.