How to Actually Pick the Right Power for Your Bathroom Heater
When you’re picking out an infrared heater for the bathroom, it’s tempting to just go for the most powerful one on the shelf. But more power doesn’t always mean more comfort—sometimes it just means a higher electric bill and a weirdly uneven temperature. First, let’s talk about the water. Bathrooms are damp. That’s why you want something IP65-rated. It’s basically just a fancy way of saying the heater is sealed up tight so steam and splashes don’t fry the electronics. But the real trick is matching the wattage to your actual space. Picking your wattage If you’ve got a tiny powder room (under 4m²), a 400W to 600W shortwave lamp is plenty. The best part? You feel the heat the second you flip the switch. You aren’t waiting for the air to warm up; the heat just hits your skin. For a medium-sized bathroom (4m² to 8m²), you’re looking at 800W to 1200W. Here is a pro tip: don’t put all that power into one giant lamp. Split it between two smaller ones. Otherwise, you’ll end up with a “hot spot” where you feel like you’re being grilled in one corner while your toes are still freezing in the other. If you have a massive master bath (over 8m²), you’ll need 1500W or more. If you go too low here, the heater will just struggle at full blast forever. That’s a quick way to burn out the filament. A few things to watch out for High-wattage heaters pull a lot of juice. Just make sure your wiring and circuit breaker can actually handle the load so you don’t trip the power the moment you step into the shower. Also, be careful with where you hang them. Shortwave infrared is intense. If you mount a 1200W lamp too low, it’s going to feel aggressive. I’d suggest keeping it at least 2.2 meters up. It gives the heat room to spread out and feels much more natural. Saving a bit of cash Since these heaters warm up instantly, there’s no reason to leave them running. Hook them up to a motion sensor or a simple timer. You walk in, get warm immediately, and the second you walk out, the power cuts. Simple.