Getting the Wattage Right for Your Bathroom Heater
Here is the most common mistake I see: people just buy the biggest lamp they can find, thinking more power equals more comfort. It doesn’t actually work like that. If you put a weak lamp in a huge room, you’re just going to stay cold. But if you cram a high-power beast into a tiny powder room, the thermostat will kick on and off every few seconds. That constant clicking wears out the relay way too fast.
Matching the Power to the Space
You’ve got to look at the actual size of the room. For those tiny half-baths (under 5 square meters), something in the 400W to 600W range usually does the trick. Remember, these shortwave lamps heat you and your towels, not the air around you. It’s a different feeling—like standing in a patch of sunlight on a cold day. If you’re dealing with a massive master bath or a commercial wet room, you’ll need to jump up to 800W or even 1200W. Just a heads-up: don’t overdo it in a tight space. You don’t want to fry your ceiling fixtures. I always suggest keeping the lamps at least 1.2 meters apart so you don’t end up with “hot spots” that feel like a heat lamp at a buffet.
Where to Put Them
Shortwave infrared is great because it’s instant. No waiting for the air to warm up. To get the most out of it, don’t just mount them flat. Angle them at about 45 degrees toward where you actually spend your time—usually the shower or the vanity. That way, the heat hits you exactly where you want it. Also, please make sure they are rated IP44 or higher. Bathrooms are humid. If you don’t have a proper seal, moisture creeps into the quartz envelope and pops the filament. Then you’re back to shivering.
The Electrical Side of Things
More wattage means faster heat, but it also puts more pressure on your wiring. Check your circuit breakers and the thickness of your wires first. If you run a 1200W lamp on thin wiring, you’ll get a voltage drop. The result? The lamp doesn’t actually get as hot as it should, and you’re just wasting electricity. It’s a quick check, but it saves a lot of headaches later.