I live in FL, and thought this would be sufficient since we get very few cool nights here, but I am not a fan. It produces heat in an odd way. Only what the light hits is warmed and then only if you are very close to it. If you hold your arm under it about 3-4 feet, the lit side of your arm will feel nice and warm, but the under side of your arm where the light doesn't hit is just as cold as if you had nothing. Its weird... My bad for not looking at one in person first, but a traditional propane gas heater works much better at heating the air around you. With this, I find myself slowly turning to get warmed on all sides like a rotisserie chicken.