Small Room Heater: The 2500W Halogen Shortwave Lamp, Built for Tight Spaces
We built this heater for one specific kind of problem: when you’ve got a tiny space that needs serious, focused heat—right now. It’s a 2500W, 400V halogen shortwave infrared lamp, designed to pack a huge amount of heat into a very small footprint. The whole thing is just 300mm long, so it slips into cramped spots without elbowing out everything else.
The power, the voltage, the size
Here’s the thing about this lamp: it pulls 2500W at 400V. That’s a lot of punch for something so compact. That 400V rating isn’t just for show. It keeps the wiring manageable, even over distance, and helps prevent voltage drop. And that 300mm tube? It concentrates all that radiant energy, so you get high watt density without needing a bigger housing. It heats up fast. Really fast. But that also means you need to plan ahead—your machine’s thermal management has to be ready for the extra warmth.
What’s inside, and why it matters
The halogen cycle does the heavy lifting, keeping the quartz envelope stable even when the filament runs hot. The payoff is consistent output over the lamp’s life. This is shortwave infrared, so it’s all about direct, line-of-sight heating. Not warming the air. Not ambient comfort. It’s focused heat, exactly where you point it. And that reflective coating on the back? It pushes more energy forward, so more of the heat actually reaches the target. The base is an R7s—straight-pin, double-ended. That makes wiring in series easy, and swapping out a lamp on the line is straightforward.
Where it shines
Use this when you need heat fast, in a small room or a tight machine. It drops right in where you already have an R7s-type heater, and the compact tube makes mounting and alignment simple. You get intense, directional heat. That’s the trade-off. So plan your cooling and shielding ahead of time. It’s not subtle—it’s precise. And when you’re working in a small footprint, that kind of focused power is exactly what you need.