Fantastic indoor-outdoor heater. Great for those spring and fall days (and some winter ones, too,) where you want to be outside or need to work in the garage or basement, but it's still just a bit too chilly. We've used this for two seasons and it kept our screened porch nice and warm. Here's what the manufacturer says: Dr Heater Model DR-238 Carbon Infrared Outdoor Heater for Restaurant, Patio, Backyard, Garage, and Decks. Can be used indoor or outdoor but needs to be wall or ceiling mounted. Perfect for home, backyard, garages, open-air restaurant, outdoor patio or deck. Weatherproof. Clean, instant heat, just plug and go. 3 power settings, 900W, 1200W, 1500W using standard 120V plug. remote control included.