COSENG’s 1500W infrared heater delivers heat in about three seconds. That’s fast enough that you feel it before you’ve fully settled into your chair. It uses infrared radiation to warm objects and people directly, rather than wasting energy heating the air around you. That makes it noticeably more efficient than a traditional propane patio heater, and safer for enclosed spaces like a garage or covered porch.

The heater is rated IP65, meaning it’s fully sealed against dust and water jets. You can mount it on a wall or ceiling in a semi-outdoor area without worrying about rain or humidity. The digital touchscreen on the front lets you choose from four heat levels and set a 24-hour timer. There’s also a memory function that recalls your last settings after a power cut, which is a small but useful detail if you use a smart plug.

The main tradeoff is coverage. At 1500 watts, this is best for a single zone—a seating area, a workbench, or a small patio table. It won’t heat an entire deck or large open space. But for targeted warmth where you actually sit, it’s quick, quiet, and well-built for the price.