What’s Inside This Heater
We built this sleek indoor heater around a 2500W shortwave halogen lamp. It was designed to pack a ton of heat into a small footprint. It runs on 400V, pulling serious power. That’s actually a good thing—it means you can use thinner wiring and still have low power loss, even over longer runs. And the 300mm tube? It keeps the whole unit compact, so you can fit it into tight spots without losing any of the heat output.
The Build and the Look
The quartz tube has a special coating that cuts down on glare, but it still lets all that warm infrared heat through. Inside, the halogen cycle protects the filament, so it stays stable and resists burning out, even when you’re flipping the switch on and off a lot. Then there’s the R7s connector. It’s a simple, two-pin design that locks the lamp in place fast. It handles the full load with no extra adapters needed. If you’re upgrading an existing heater, this is a straight drop-in replacement.
How It Feels in Action
When you use this indoors, the heat is focused. It warms people and surfaces directly, instead of just heating up the air. And because it’s shortwave, it heats up fast—you get warmth the moment you need it. Now, here’s the part to keep in mind: that 2500W/400V setup needs a control circuit that’s up to the job. The housing is built to handle the concentrated heat, so nearby components stay safe.