A halogen heater bulb throws off comfort the instant it lights up, but you still get uneven warmth on the patio more often than not. The bulb usually isn’t the problem. It’s height and angle—those two things decide how far your radiant heat actually reaches. Set them right, and the heater turns a drafty corner into a steady pocket of warmth. Set them wrong, and you end up hot-headed with cold feet. What’s actually going on under the hood A halogen heater bulb gives off short-wave infrared warmth, which travels straight through the air without preheating it. You feel the heat directly, line-of-sight. Most units run a quartz envelope to handle high temps and fast heat-up, paired with a reflector that shapes the beam. In practice, mount the heater around 1.5–2.5 meters high, and you get a broad, even pattern for people seated or standing. Angle it downward roughly 30–45 degrees, and the beam lands on people and furniture—not just the open sky. Why this works on the patio Outdoors, you want comfort you can count on. When the bulb is at the right height, the infrared warmth spreads across the seating area with fewer cold spots. That means fewer mid-evening tweaks, less fussing with controls, and more time just enjoying the night. The bulb comes up to temperature fast, so you feel warmth almost as soon as you flip the switch. Inside the home, that same direct heat keeps the warmth focused where you need it, instead of dumping energy into empty air. The practical details you can’t skip Halogen bulbs deliver strong radiant output, but the surface gets seriously hot. Keep clearance from fabrics, shades, and anything overhead, and stick to the fixture’s listed distances. Height affects comfort, sure, but the beam has to stay inside the intended coverage area. If your spot is windy, pick a heater with a protected element and an IP rating that matches the exposure. Pair the bulb with a model that includes safety features—tip-over protection and a thermostat—and double-check voltage compatibility before you install.