Getting Your Bathroom Heater Size Right
Picking a heater for your bathroom isn’t about just grabbing the one with the biggest number on the box. If you overdo it, you’re just wasting electricity. If you go too small, you’re shivering while you dry off. The trick is finding that sweet spot where the heat actually keeps up with the cold tiles and the steam escaping through the vents. How much power do you actually need? It mostly comes down to the size of the room. If you’ve got a tiny powder room (under 4m²), a 400W to 600W lamp is usually plenty. Any more than that and you’ll turn the place into a sauna. For a standard medium-sized bathroom (4m² to 8m²), look at 800W to 1200W. Anything less and the heat just vanishes the moment you turn on the exhaust fan. Then you have those big master baths (over 8m²). For those, you’ll want 1500W or maybe a couple of smaller units spread out so there aren’t any cold spots. Just a heads up: if you go too big, you might trip your circuit breaker. But if you go too small, the heater has to run at full blast constantly, which wears out the bulb way faster. What’s the deal with IP65? Bathrooms are brutal on electronics. Between the shower steam and the occasional splash, things get damp fast. That “IP65” rating is basically your insurance policy. The “6” means dust can’t get in, and the “5” means it can handle water jets without breaking a sweat. It keeps the internals dry and stops the wiring from corroding, so you don’t have to worry about a short circuit while you’re in the tub. A few things to keep in mind These short-wave lamps are great because they heat you, not the air around you. It’s instant warmth. But be careful with where you put them. A 1500W lamp puts out a lot of intense heat in one spot. If you mount it too low, it’ll feel like you’re standing too close to a campfire. Give yourself some breathing room and mount it high enough so the warmth spreads out evenly. And one last tip—if you’re going for a high-wattage unit, double-check your wiring. You don’t want a voltage drop making your expensive heater feel like a lukewarm toaster.