A well-maintained furnace is a better means of keeping warm than cuddling with a camp stove or flooding the den with chicken soup. Raise the Fahrenheit with today's Groupon: for $39, you get an air-conditioning, furnace, or heat-pump tune-up and 26-point safety inspection from Housh–The Home Energy Experts (a $159 value).
Housh–The Home Energy Experts' specialists keep energy bills trimmed and indoor climes pleasant with checks that ensure systems are running efficiently. During air-conditioning tune-ups and inspections, expert eyes roam over safety controls, evaporator coils, and other parts as workers record efficiency levels, fine-tune thermostats, and pinpoint leaks in air ducts. Furnaces are thoroughly vetted and calibrated, then given a carbon-monoxide test or asked to recite the alphabet backward. Tune-ups and inspections take about 1.5 hours to complete, allowing technicians to be thorough as they check heating or cooling for streamlined operation.