Keeping Things Safe When Heat Meets Humidity
Putting infrared heaters in a steamy bathroom or a rainy nightclub patio is a bit like playing with fire—literally. You’ve got high voltage on one side and moisture on the other. If you use standard quartz tubes here, you’re asking for trouble. They tend to crack the moment they get hit with thermal shock, or worse, they short out when steam creeps into the terminals. To stop that from happening, we lean on explosion-proof quartz and sealed housings. The Deal With “Explosion-Proof” Glass Standard quartz is pretty brittle. Imagine a tiny, cold droplet of water hitting a tube that’s glowing at 600°C. It’s a recipe for a stress fracture. That’s why we use reinforced, heavy-wall quartz. It can take those wild temperature swings without giving up. And just to be clear: “explosion-proof” doesn’t mean we’re expecting a bomb. It just means the glass is tough enough to handle the internal pressure and won’t shatter into a million pieces if some water splashes on it. Stopping the Leaks Water getting inside is the fastest way to kill a lamp. We use specialized gaskets and moisture-resistant seals right where the electricity hits the lamp. Without those, water can actually track along the glass toward the electrodes, which leads to a nasty arc flash. A solid IP-rated enclosure keeps the current exactly where it belongs—in the filament—and far away from the water. The Trade-Off Here’s the catch. You don’t get something for nothing. Because the quartz is thicker and has those protective coatings, it doesn’t let the infrared heat through quite as easily as a thin, raw tube would. You’re getting a much safer lamp, but you lose a tiny bit of that heat penetration. It’s an easy fix, though. You just bump up the wattage or move the lamp a little closer to where people are standing. One last thing: make sure you wire these into a GFCI-protected circuit. Even with the best glass in the world, your wiring needs to be rated for wet locations. Otherwise, you’re just waiting for the whole system to crash.