How to actually pick the right wattage for your bathroom heater
Here is the secret: more power isn’t always better. You don’t need the biggest, baddest lamp on the market. You just need one that fits your space. If you overdo it, you’re just burning money; if you underdo it, you’re still shivering while you dry off. Finding your fit If you’ve got a tiny powder room—you know, those little spaces under 4m²—keep it simple. A single 400W to 600W short-wave lamp is plenty. These rooms are small. Any more power and you’ll turn the place into a sauna in about three minutes. For those medium-sized bathrooms (roughly 4m² to 8m²), you have a couple of options. You could go with one 1200W unit, but I usually suggest two 600W lamps instead. Why? Because it spreads the warmth around. It stops that annoying feeling where it’s roasting hot directly under the lamp but freezing cold the second you step two feet to the left. Then there are the big master baths. If you’re over 8m², you’re going to need a bit more muscle—usually a setup totaling between 1800W and 2400W. The downside of going too big It’s tempting to just buy the most powerful lamp available, but there’s a catch. If you cram a 1200W lamp into a tiny stall, the quartz tube gets incredibly hot. That puts a lot of stress on the filament, and if your ventilation isn’t great, the bulb will likely burn out way sooner than it should. Plus, you’ll want to double-check your wiring. You don’t want to pull more current than your home’s electrical system can actually handle. Getting the most bang for your buck Here’s a pro tip: think about where you actually stand. Short-wave infrared doesn’t really heat the air; it heats you. So, place your lamps exactly where you’ll be—usually right by the shower or the vanity. By focusing the heat on a specific zone rather than trying to warm every cubic inch of the room, you save a lot on your electric bill. And for the love of everything, use a timer or a motion sensor. There’s nothing worse than realizing you left the heater running for three hours after you already finished getting dressed.