Getting Your Bathroom Heater Wattage Just Right
Nobody likes stepping out of a hot shower into a freezing bathroom. It’s a shock to the system. But here’s the thing: if you just grab the most powerful infrared lamp you can find, you aren’t necessarily winning. Infrared is different from a space heater. It doesn’t bother warming up the air; it goes straight for your skin and the walls. If you go too big, you might actually overheat the fixture itself. Go too small? You’ll be standing there shivering, waiting for a warmth that’s never coming. How much power do you actually need? It mostly comes down to the size of your room. For those tiny powder rooms (under 4m²), a single 250W to 400W lamp usually does the trick. It creates a nice, cozy little bubble of heat. If you’re dealing with a medium-sized bathroom (4m² to 8m²), you’ll want something in the 600W to 800W range. I usually suggest splitting that across two lamps. It spreads the heat around better so you don’t have one “hot spot” and one “cold spot.” For the big master suites (over 8m²), you’re looking at 1000W or more. But wait—don’t forget about your ceilings. If you have high ceilings (like 3 meters), you’ll need more juice than someone with a low 2.2-meter ceiling. Heat loses its punch as it travels, so the further it has to go, the harder the lamp has to work. The trade-offs There’s always a catch. Higher wattage means the lamps get way hotter. We use quartz glass to keep things from cracking under the stress, but if your ventilation is bad, pushing a lamp to its limit will burn out the filament faster. Plus, while a high-wattage unit warms up almost instantly, that initial power spike can be a bit hard on your circuit breaker. A few tips for the install Most of these use R7s or Sk15 connectors, so swapping them is pretty easy. But please, check your wiring. If you try to run a 1200W array through thin wires, you’re asking for trouble. You’ll get voltage drops and the terminals can actually start to heat up. And one last thing: before you pop in a higher-wattage lamp than what came with the unit, double-check that the housing can actually handle the heat. It’s a small detail, but it keeps everything safe.