How to actually pick the right infrared heater for your bathroom
Getting the wattage right for a bathroom isn’t a guessing game—it mostly comes down to how big the room is and what your walls are made of. First, let’s get one thing straight: these aren’t your typical convection heaters. They don’t just blow warm air around. Instead, they use short-wave radiation to warm you and the surfaces around you directly. It feels more like standing in the sun.
Getting the power right
You can’t just slap a 2000W lamp into a tiny powder room and call it a day. You’ll turn the place into a sauna in about thirty seconds. For those small bathrooms—anything under 5 square meters—a single 400W to 600W lamp usually does the trick. If you’ve got a mid-sized space (5-10m²), you’re looking at 800W to 1200W. Here’s a pro tip: if you go over 1500W in a tight spot, you’ll hit that “thermal ceiling” way too fast. Your thermostat will start clicking on and off every few seconds. It’s annoying, it wastes power, and it eventually kills the relays. I always suggest spreading the heat out. Two 500W lamps are way better than one 1000W lamp. Why? Because you won’t have those annoying cold spots where you’re shivering in one corner while the other side of the room is roasting.
Why IP65 matters
Bathrooms are wet. It’s where lamps go to die. That’s why we stick with IP65-rated gear. It means the housing is tight enough to keep dust out and can handle a spray of water without blinking. We also seal the wiring junctions with silicone gaskets. It’s a simple step, but it stops moisture from creeping into the sockets and shorting everything out.
The balance of heat and height
More wattage means more “heat density.” Sure, a beefy lamp warms the room faster, but it creates a very intense heat zone right underneath it. If you mount the lamp too low, it’s not cozy—it’s uncomfortable. You’ll feel like you’re being grilled. You have to balance the wattage with how high you hang the unit to make sure the warmth feels even and natural. One last thing. Check your circuit breakers before you start wiring. If you put too many high-wattage lamps on one circuit, that initial surge might just pop your breaker the moment you flip the switch.