A broken heating unit leads to frost-covered light bulbs and encourages abominable snowmen to move into the building. Prevent monstrous problems with today’s Groupon: for $35, you get a heater and air-conditioner tune-up from Service Heating & Air Conditioning, Inc. (an $89 value). This Groupon is valid for service areas and brands listed here.

Service Heating & Air Conditioning, Inc. dispatches a fleet of NATE-certified technicians to refurbish home heating and cooling equipment, sprucing up components and circulatory ductwork to ensure healthy and comfortable climate control. A seasoned tech helps heating systems to combat Jack Frost's icy grip and discourages indoor snowball fights by checking and cleaning 15 points, including the motor, the evaporator coil, the air filters, the electrical connections, and the belts. If applicable to the unit, the heater healer will then search for gas leaks or cracked heat exchangers while calibrating the thermostat and checking the temperature rise.

During AC tune-ups, the tech checks and cleans 15 vital air-conditioning points, such as freon levels and condenser coils, and expunges vent grime accumulated from wind-blown dirt and migratory dust-bunny colonies. In addition to revamping heating and cooling systems, techs will check batteries on smoke and carbon-monoxide detectors. Groupon-holders also get bumped up to priority-service status for one year, which sends a serviceperson out to de-fritz any equipment problems on the most scorching winter days and freezing summer nights.

Click here for Service Heating & Air Conditioning, Inc.'s Twitter page.