I am looking at purchasing a harman P43 but I am a little concerned if it will heat my house. My house is 1800 square feet older 2 story house with decent insulation and 8 1/2 ft ceilings. I know that its rated at heating up to 2400 but I don't know that it will handle that much. I have called 4 different harman dealers and one said that it wouldn't heat it and other 3 said it would with no problem. Not sure who to believe. I have been searching the forums for a few weeks now, but I could not find any concrete answers. One thing I did find is that most people who have the P43 really like it, so that is good to know. Thanks