Ok so I have a 1500 sq ft house.my harman p35i is a insert in The living room.Up stairs is two bedrooms downs stairs a office and dinning room then kitchen.I have been experimenting and keeping the stove on it keeps the main areas living room and two upstairs bedrooms very toasty at 72 to 75 .That's with no fans mind you.The kitchen around 65.My question is does anybody turn the oil complexly off?i fair frozen pipes on basement.Im in Connecticut. I also have a hot water heater so can still take showers with out oil switch on.any comments is appreciated thanx Ct Carl