We built this Commercial patio heater around a 2500W halogen tube, designed for a 400V line. Because when you’re heating outdoors, you need serious, dense heat—and a power supply that won’t quit. The result? A blast of infrared warmth that hits people and surfaces directly, instead of wasting time trying to heat the air around them. Here’s the thing about the power and size. That 2500W rating is chosen to handle busy patios and entryways without pushing the heater to its limit. And running it on 400V is a smart move—it drops the current, which keeps wiring manageable and voltage drop under control, even on longer runs. The 300mm tube length focuses that heat into a defined zone, so you get warmth exactly where you need it, right where people are sitting and standing. Now, let’s talk about what’s inside. The tube uses a halogen cycle inside a quartz envelope. This keeps the filament cleaner, even when it’s running hot. So you get steady output over time and a consistent glow. The R7s base is the standard connector in the industry, which makes swapping out the lamp a simple, drop-in job. We’ve added a tough coating to stand up to the elements, but you’ll still want to keep the tube clean and dry. It’s a small step that prevents hot spots and keeps everything running safely. In practice, this setup is all about outdoor comfort and getting the job done fast. You wire it to a 400V circuit, point it where you want the warmth, and you’ve got instant radiant heat. Now, it’s worth noting—2500W is serious power. So you’ll want to plan your mounting spot to manage glare, and make sure your electrical panel and overcurrent protection are sized for continuous duty. Do that, and you’ve got a heater that’s ready for the long haul.