What This Heater Is Really Built For
We built this attic heater for the places that get brutally cold and don’t have room to spare. Think industrial spots where you need serious heat, but you can’t fit a giant unit. It runs on 400V and pulls 2500W, so you get a lot of heat packed into a small footprint. The key is it won’t overload a circuit that’s properly set up. And the tube? It’s 300mm long—short enough to squeeze into tight housings and crowded ductwork, but still long enough to keep the filament stable and spread the heat evenly.
The Inside Story: Halogen, Coating, and a No-Fuss Connector
Inside, the heating element uses a halogen cycle in a quartz tube. That means the filament can run hotter and cleaner, so the output stays steady. No more watching the heat fade over time like you do with standard incandescent bulbs. The tube is also coated to handle UV and to keep surface contamination from creating hot spots. For wiring, it uses an R7s connector. Two contacts. Direct. Simple. It wires up quickly and stays tight even when things vibrate—no adapters, no loose pins to worry about.
Where It Shines: Attics and Enclosed Spaces
In attic spaces, that 400V, 2500W rating does the heavy lifting. It can fight off cold air sneaking in and keep the temperature steady without running nonstop. And because it’s compact, the 300mm footprint slips into spots where bigger heaters just won’t fit. But here’s the trade-off: this much power creates a lot of local heat. So you need to plan for ventilation and add some heat shielding to protect nearby wiring and materials.
The Reality of Heat: Plan for Airflow
Let’s be honest—2500W at 400V means intense heat in a small package. So plan your airflow and mounting with care. Keep the clearances. Make sure the enclosure can shed heat without turning the area into a pressure cooker.
The Bottom Line, Without the Fluff
If you need a heater that fits, wires up clean with R7s, and delivers steady infrared heat, this 400V, 2500W halogen tube is a solid industrial choice you can count on.