What’s Inside: The Power Behind the Warmth
Here’s the thing about our greenhouse heaters—they’re not just another lamp. They’re built as high-output halogen infrared lamps, designed to throw off real, direct heat right where you need it in an enclosed space. We run these units on 400V. Why? Because that lets us pack in serious wattage without pushing the amperage through the roof. The payoff is simple: you can use a manageable wire gauge, and you won’t lose power over long cable runs, even in a big greenhouse. At 2500W, you’re getting dense radiant energy. Mounted at standard heights, one lamp covers a serious amount of floor area. And the 300mm length? It’s a sweet spot—compact enough to drop into tight fixtures, but long enough to give you a stable, even emitting surface.
The Build: Simple Choices, Real Results
Inside, the halogen element lives in a quartz envelope. That combo keeps output steady and helps the lamp take repeated on-off cycles without burning out early. We also added a specialized coating on the tube. It keeps more heat inside the envelope and pushes more infrared energy outward, so more usable warmth actually reaches your plants and soil. And for the install, we went with an R7s base. It locks in securely, handles high heat, and makes swapping lamps a straightforward job—just a drop-in replacement into what you already have.
How It Actually Works (And What to Watch For)
In the greenhouse, this setup shines for knocking out cold spots, guarding against frost, and adding heat during those shoulder seasons. Radiant heat warms surfaces directly, instead of trying to heat the whole air first. That helps keep temperatures stable under the canopy. But there’s a trade-off: with high heat density, you’ve got to space fixtures properly and make sure ventilation is up to the task. If your cooling can’t keep pace, heat can build up. Plan your mounting layout to match the lamp’s output, and you’ll get fast-response heating you can rely on—with minimal maintenance hassle.