This stove I purchased (jotul F3) is awesome as far as looks, ease of use and cleaning but for some reason I thought this would be all I need to keep my heat pump from running all of the time. I have a 1700 sq. ft. house and here's my two problems. This heats only about a quarter of my house( the heat never makes it to the back of the house so I've set up a fan in front of it and point it to the rear of the house. I also run my ceiling fan in the room on reverse.) Problem two is to get any real heat from the stove the air valve must be left half to full open meaning burn time is only 1.5 hours. I've wound up turning it to low before bed and get up every 3 hours to find my heat pump running and having just enough hot coals to start another fire. I really wish I would have bought the F 500 but didn't due to my fireplace and hearth size. Live and learn I guess. Any help on how to get a longer burn and how to get more heat to back of house would be worth its weight in gold at this point. I love this stove even though its to small for my house and if I can somehow sell this one for another it will for sure be another jotul, thanks for reading.