I have a guy coming on tuesday to appraise home in lebanon pa. i have a coal stoker stove in my downstairs area and it does my entire home.i dosconnectedd our furnace in basement and used insulation to plug duct ends that go to vents in rooms in the mean time. anyone know if this would be an issue with new lower fha standards? my stove does keep every room above 50 degrees which i read is required.help?/?/?