Incorrect venting. Any furnace that burns fuel be it gasoline or propane involves an air offer for that combustion system, plus a venting system to expel combustion gases. Your furnace technician will look for appropriate air flow all through typical assistance phone calls. We will act quick and correct, so http://boilerinstallation49360.fireblogz.com/26032354/top-guidelines-of-furnace-maintenance-chatsworth-ca