well its good you have a guarantee, i had a radiant heater way back when a little different it was made of tempered glass they work well but slow hope it works out okay :) as for me we have central heating this is canada after all and it gets really cold, i would end up with it in my bed. i would if needed get two or three of those wind thingys and some serious battery packs and i could sell hydro to hydro :)))