Furnace malfunctions are usually caused by clogged air filters or devious ski parkas intent on being worn indoors. Keep crafty coats in the closet with today’s Groupon: for $69, you get a 15-point maintenance inspection, tune-up, and cleaning for a gas boiler or a gas furnace from Sila Heating & Air Conditioning (a $149 value). This Groupon is valid for homes throughout Fairfield County.

Named for the Inuit god of energy and air, Sila Heating & Air Conditioning dispatches appliance experts to keep boilers and furnaces pumping warmth during biting winter chills. Using a 15-point checklist, technicians thoroughly inspect boilers and furnaces for signs of trouble, such as inefficiently working parts or the letters ¬¬_S.O.S._ in lint spelled on the filter. After expert eyes have thoroughly roved over systems, a tune-up tweaks trouble spots back into line and ensures systems are at the top of their home-heating game. Technicians also cleanse units to keep parts running smoothly and ready gleaming ducts for upcoming appliance beauty pageants.