How to pick the right wattage for your bathroom heater
When you’re picking out an IPX4 splash-proof infrared heater, it’s tempting to just go for the biggest number on the box. But bigger isn’t always better. If you overdo it, you’re just throwing money away on electricity—or worse, you’ll turn your bathroom into a sauna. It’s all about the size of the room. If you’ve got a tiny powder room (under 4m²), a 400W to 600W lamp is plenty. In a space that small, a heavy-duty heater will actually overheat and shut itself off just to keep things safe. For your average bathroom (around 4m² to 8m²), aim for 800W to 1200W. That’s usually the sweet spot for keeping things cozy. Then you have the big master baths or wet rooms over 10m². For those, you’ll want 1500W or more. You might even want to install a few different lamps so you don’t end up with those annoying cold spots. Now, let’s talk about that “IPX4” label. Basically, it means the heater is built to handle splashes from any direction. We use thick gaskets and special coatings to make sure the electricity and the water never meet. The best part? Infrared heat doesn’t bother trying to warm up all the air in the room first. It beams heat directly onto you and the walls. It feels like stepping into a patch of sunlight on a cold day. It’s instant. No more shivering while you wait for a radiator to finally kick in. But there is a catch with high-wattage units. They heat up fast, sure, but they pull a lot of power. If you plug a 2000W beast into an old circuit with thin wires, you’re probably going to trip your breaker. Just make sure your wiring can actually handle the load before you flip the switch. One last tip: watch out for your vents. Don’t put the heater right under an AC vent or a drafty window. If you do, the cold air just strips the heat away before it ever reaches you. Get the wattage right for your space, double-check that seal, and put it on its own circuit. You’ll be set.