How to Pick the Right Infrared Heater for Your Bathroom
Picking the right wattage for an infrared heater isn’t about guessing—it’s about making sure you actually feel the warmth when you step out of the shower. If you go too low, you’ll be standing there shivering while the heater struggles to keep up. But if you go overkill, you’re just throwing money away on your electric bill and potentially overheating the fixture.
Getting the size right
Think about the size of your space first. If you’ve got a tiny powder room (under 4m²), you don’t need a monster. A small lamp—something in the 250W to 400W range—usually does the trick. These rooms are small enough that they warm up almost instantly. For your main bathroom (between 6m² and 12m²), you’ll want to step it up to 600W or 800W. Bigger rooms have more walls and windows where the heat likes to escape, so you need a bit more punch to keep things cozy. And if you have one of those massive luxury baths with high ceilings? Don’t just buy one giant heater. It’s better to use a few 800W lamps spread out. That way, you don’t end up with “cold spots” where you’re freezing in one corner and roasting in another.
The “Too Much Power” Problem
You might think “more power equals better,” but there’s a catch. Sure, a high-wattage lamp heats up faster. But if you put an 800W beast in a tiny closet-sized bathroom, it feels aggressive. You’ll get a scorching “hot spot” right under the lamp, while the rest of the room stays chilly. It’s not a great feeling.
A few pro tips for the install
Here is something important:put these on their own dedicated circuit. These lamps pull a lot of power the second you flip the switch. If your wiring is too thin or shared with too many other things, you’ll get a voltage drop. That basically kills the heater’s performance. Also, don’t try to heat the air at the ceiling. That’s a waste. Instead, place the lamps exactly where you actually stand—like right by the towel rack or the vanity. Focus the heat on your body, not the room, and your energy bill will thank you.