We built this outdoor radiant heater to solve a real, gritty problem: keeping open-air industrial spaces warm when the usual convection heaters just throw in the towel. It uses a halogen-quartz tube that blasts concentrated infrared heat right where you need it—the kind of focused warmth that convection heaters can’t even dream of delivering. Power, Voltage, and Size—Straight to the Point It runs at 2500W on 400V. We went with this setup because it packs serious heat density without overworking the connectors and wiring. The tube is 300mm long, which means the heat stays tight and intense in a small zone. Perfect when you’re trying to warm a specific part, a work line, or a single outdoor area—no energy wasted, just focused warmth. Materials and Design—Built to Stay Clean and Keep Working The halogen cycle does two big jobs: it keeps the quartz envelope clear and holds the filament temperature steady. That means the heat output stays consistent over the life of the lamp. The tube coating handles two headaches you’d rather not deal with: it cuts down on UV emissions and keeps surface leakage current in check—especially important when moisture and grime are part of the daily reality. And the R7s connector? It’s simple, industrial-grade, and does its job without drama. Two solid contacts that wire up fast and stay put, even when things get shaky from vibration. Tough Outdoors, Simple to Install Outdoor jobs are rough—wind, rain, dust, the whole deal. This design puts the heat exactly where you want it, with a rugged quartz envelope and an electrical joint that’s protected. Whether you’re retrofitting an existing setup or building something new, installation is straightforward. Just keep this in mind: at 2500W, that kind of power density needs enough airflow or proper shielding. Otherwise, nearby components can get too hot. Plan for that, and you’re good.