How to pick the right wattage for your bathroom heater
Getting the wattage wrong on a ceiling heater is a pain. You either end up with annoying cold spots, or you’re basically paying to heat the entire neighborhood through your ceiling. The trick is to look at how much space you’re actually filling and how far the heater is from the floor.
Let’s talk power
Here is the thing about heat: it fades the further it has to travel. If you’re just doing a tiny powder room, something in the 250W to 400W range usually does the trick. It’s enough to keep you cozy without overdoing it. But for those big master bathrooms? You’ll probably want a few 600W or 800W units spread out. Otherwise, you’ll be shivering in one corner while the other is boiling. Just a heads-up: don’t just keep cranking up the wattage. High-power lamps pull a lot of juice. If your wiring isn’t up to the task, you’re looking at tripped breakers or, worse, melted insulation. Not a great look.
The ceiling height problem
Your ceiling height changes everything. Since infrared lamps heat you and not the air, the distance matters. If your ceilings are higher than 2.8 meters, a weak lamp is basically useless by the time the heat reaches your shoulders. In that case, you’ve got two choices. Go for a higher wattage, or use reflectors to tighten the beam so the heat actually hits its target.
Don’t overdo it
It’s tempting to think “more is better,” but that’s a trap. If you put too much power in a small room, you create an oven. You’ll end up fighting the heat, and your ventilation system will have to work overtime to clear out the steam. It’s a waste of energy. Stick to what the room actually needs. I’d suggest adding a timer or a thermostat so the lamps aren’t just blasting at full tilt the whole time. Trust me, putting 1200W of heat into a tiny 4m² space is just burning money—and it’ll kill your lamps a lot faster.