PUFF BACKS –a malfunction in a furnace or boiler can create an oil film that can be circulated throughout the home via the heating system. All interior surfaces as well as personal property are affected by a puff back. Extensive and time-consuming cleaning will be required. To prevent puff backs, have the furnace or boiler serviced regularly – at least yearly, and preferably just before the start of the heating season.
PUFF BACKS
