How to actually pick the right wattage for your bathroom heater
Here is the biggest mistake I see people make: thinking that “more power equals more comfort.” It doesn’t. In fact, shoving a massive 1200W lamp into a tiny powder room is a great way to turn your bathroom into a sauna and waste a ton of electricity. It’s not about raw power; it’s about how that heat actually fits in your space.
The “Feel” of the Heat
Infrared is different from a standard space heater. It doesn’t just warm up the air; it beams heat directly onto you. If you’ve got a small bathroom—something under 4 square meters—a 400W or 600W lamp is usually plenty. It keeps you warm without making the room feel stifling. But if you’re dealing with a larger space (around 6 to 10 square meters), you’ll probably want to bump that up to 800W or 1200W. And keep an eye on your ceilings. If they’re higher than 2.5 meters, that heat has a longer trip to make to reach you. You’ll need a bit more wattage just to make sure you actually feel the warmth by the time it hits the floor.
Getting more bang for your buck
Want to save on your electric bill? Look at the reflector. Cheap reflectors just scatter the heat everywhere. A high-quality parabolic one focuses the beam right where you need it. It’s a simple detail, but it can let you drop your wattage by 20% without feeling any colder. Plus, here is a pro tip: don’t just buy one giant unit. It’s much better to use two smaller 600W lamps spaced apart. It gets rid of those annoying cold spots and feels much more natural.
A quick word on your wiring
Higher wattage means the heater kicks in faster, which is great. But it also puts more stress on your electrical system. Before you go for the most powerful model, double-check your circuit breakers. If you’re putting a new heater into an old house, the original wiring might not be up for the task. Stick to the lower wattage options or have an electrician take a look so you don’t end up tripping the power every time you take a shower.