We built this 400V, 2500W halogen sunroom heater for one reason: to warm people in big glass rooms where drafts make you want to run for a blanket. It shines heat right where you need it—on you and the surfaces around you—without any spinning fans stirring up the air. So you get warmth the moment you flip the switch. No waiting. No fuss.
The power behind the warmth
Here’s the thing: 2500 watts on a 400-volt line gives you serious heat without drawing huge current. That means you can keep wiring tidy, and you won’t lose power over longer runs. The 300mm tube focuses the infrared beam into a tight zone, so you’re heating the spot where people actually sit, not just the empty ceiling above. And that 400V setup? It’s intentional. It’s built for industrial and commercial power, so you can run several units across a balanced three-phase system without tripping circuits.
Built to take the heat
The tube is quartz—tough enough to handle quick, repeated heating and cooling without cracking. Inside, the halogen capsule keeps the filament at a steady temperature, so the output stays consistent over the life of the lamp. A reflective coating on the back of the tube sends the “lost” heat forward, boosting the intensity right where you need it. And the R7s base? It’s a simple, two-pin drop-in connection. It snaps in fast, stands up to the heat, and keeps the whole unit compact.
Sunroom comfort, with real-world trade-offs
In a sunroom, this heater responds the way you want—instant on, instant off. You only heat the space when it’s in use, so you’re not wasting energy on empty air. The slim tube slips into tight spots and aims cleanly, so the warmth lands exactly where you want it. Now, the trade-off: 2500W is a lot of power in a small package. That means you need to plan for proper ventilation and thermal management around the fixture to keep nearby materials safe. It’s a small ask for the comfort you get in return.