How to Actually Size Your Bathroom Heat Lamps
When you’re picking out waterproof infrared lamps for your bathroom, the instinct is usually to go for the biggest number on the box. But honestly? That’s a mistake. It’s not about raw power; it’s about making sure the heat actually fits the room. Otherwise, you’re just throwing money away or shivering in a cold shower. Finding your sweet spot Think of it in three simple tiers. If you’ve got a tiny powder room—you know, the kind where you can almost touch both walls at once—a single 250W to 400W lamp is plenty. It gives you that cozy hit of warmth without turning the room into a sauna. For a medium-sized bathroom, you’ll probably want a couple of lamps or one beefier 600W to 800W unit. That keeps the air feeling steady. Then you have the big master baths. Once you cross that 10m² mark, you’re looking at 1000W or more. Here’s the thing: putting a 1000W lamp in a tiny closet-sized bathroom is a bad move. The room will overheat instantly, the sensor will kick it off, and it’ll just keep clicking on and off. That “short-cycling” kills your equipment and jacks up your electric bill. Dealing with the steam Bathrooms are wet. Really wet. That’s why the quartz glass has to be sealed tight. We use IP-rated housings because the last thing you want is moisture creeping into the electrical contacts. The cool part about short-wave infrared is that it doesn’t bother trying to heat the air. Instead, it warms you and the surfaces around you directly. It feels like stepping into a beam of sunlight. Even if you leave the door open and a draft of winter air blows in, you’ll still feel that instant heat on your skin. The danger of “too much” There’s a trade-off here. When you cram too much wattage into a small fixture, you create an intense heat density. Sure, the room warms up fast, but it puts a massive strain on the filament. If the lamp is too powerful for the way the housing breathes, the socket can actually overheat and char. And please, check your wiring. If you try to push 1200W through some cheap, thin wires, you’re basically asking for a burnout. Keep it balanced. Your skin—and your fuse box—will thank you.