How to Actually Pick the Right Infrared Heater for Your Bathroom
Here’s the thing about bathroom heaters: more power isn’t always better. If you just buy the biggest, baddest unit on the shelf, you’re probably just wasting money—and maybe making your bathroom feel like a sauna in the worst way possible. The trick is simply matching the heat to the size of your room.
Getting the size right
If you’ve got a tiny powder room (we’re talking under 4m²), a 400W to 600W lamp is plenty. In a space that small, a high-wattage heater is overkill. It’ll heat up way too fast, and your thermostat will be constantly clicking on and off. That “short-cycling” is a killer—it wears out the hardware much faster than it should. For the bigger bathrooms (6m² to 12m²), you’re looking at 800W to 1200W. But don’t just slap in one giant lamp. I always suggest splitting that power across two or three smaller units. Why? Because it spreads the warmth around. No one likes stepping out of the shower into a “cold spot” because the heat is all concentrated in one corner of the room.
A few things to watch out for
There’s a trade-off with higher wattage. The more power you cram into one lamp, the hotter that quartz tube gets. If you have low ceilings, be careful. You don’t want to accidentally scorch your ceiling tiles or melt a plastic fixture because the lamp is just too intense for the space. Keep it low-wattage if the ceiling is close to your head.
Saving a bit on the electric bill
If you want to be smart about your energy, wire each lamp to its own switch. Think about it. If you’re just popping in to wash your hands, you don’t need 1200W of blasting heat. Just flick on one 400W lamp for a minute. Save the full power for those long, relaxing baths. Plus, if you overdo the wattage, you’re basically paying to heat air that your extractor fan is just sucking right out of the room. It’s a waste. Get the wattage right, and the heat stays where it belongs—on you.