How to actually size an infrared heater for your bathroom
Here is the thing about bathroom heaters: most people just buy the biggest one they can find and hope for the best. But that’s usually a mistake. If you go too small, the heat just vanishes into the air before it ever reaches you. Go too big, and you’re basically standing under a heat lamp at a buffet—too hot in one spot, wasting electricity, and feeling generally uncomfortable.
Finding the sweet spot
It really comes down to how much space you’re trying to warm up. If you’ve got a tiny powder room, something in the 400W to 600W range is usually plenty. These shortwave lamps are great because they warm you up directly, rather than trying to heat up every cubic inch of air in the room. For a bigger master bath, you’ll probably want to jump up to 800W or 1200W. But if you have those fancy high ceilings, be careful. Instead of buying one massive, scorching lamp, try a few smaller ones spread out across the ceiling. It stops those annoying cold spots and makes the whole room feel cozy.
The “too much of a good thing” problem
Infrared heat travels in a straight line. It doesn’t drift around like a space heater does. When you put a 1500W lamp in a small space, you hit a wall pretty quickly. You’ll feel the heat instantly—maybe too instantly. It gets uncomfortable fast, and your power bill will definitely notice.
A few things to check before you buy
Before you go all-in on a high-power setup, take a look at your wiring. High-wattage lamps pull a lot of current. You don’t want to be tripping your circuit breakers every time you take a shower. Plus, those beefier lamps put more stress on your sockets and the ceiling housing. If your bathroom doesn’t have great ventilation, a super-powerful lamp can actually warp the ceiling enclosure over time. My advice? Stick to the lowest wattage that gets you warm. Your wallet—and your ceiling—will thank you.