Air conditioning tames America's harshest climates, from the scorching heat of the Southwest to the poorly ventilated geodesic dome covering Maine. Outwit your atmosphere with this Groupon.

$39 for Heating and Air-Conditioning Inspection ($109 Value)

To ensure its peak performance, certified technicians examine the home’s entire heating-and-air-conditioning system, including motor amps, safety controls, and electrical connections. Throughout the analysis, they monitor everything from temperature difference and refrigerant pressure to coil corrosion, ensuring both the furnace and A/C’s ability to handle any seasons’ puckish pranks. To complete the service, a complete diagnosis of system performance suggests future procedures customers can take to save energy. For a full list of services, click here.