Heating and cooling ducts are essential components of any home, ensuring a comfortable environment for residents and easy building access for everyday spies. Make sneaking around easier with today's Groupon: for $69, you get a whole-house air-duct cleaning (a $79 value) plus a two-room carpet cleaning (a $70 value) or a dryer-vent cleaning (a $59 value) from Mountain Air Duct Services (up to a $149 value). This Groupon is valid for homes in Northern Virginia, the District, Montgomery County, Howard County, Prince George County, Anne Arundel County, and Frederick County.

Mountain Air Duct Services' professional cleaning crew airs out dusty domiciles with thorough duct, vent, and carpet cleansing services. The 90-minute air-duct cleaning for homes with one furnace/AC system begins with a full air-duct system inspection to test and evaluate every aspect of the home's air quality. Technicians will then clean all registers and grills before using a rotating brush and vacuum to clear an unlimited number of vents and one return vent of dust, dirt, and furry tribbles. The resulting purified air vents can help improve air quality, alleviate allergies, and enhance the efficiency of cooling and heating systems.

Cleaners can then de-grime the carpets in any two rooms (up to 200 square feet per room) or extract fire-friendly lint from dryer vents. Each 30-minute floor-fur cleaning includes a deep steam cleaning and deodorizing, and for an additional cost, technicians can remove spots, pet stains, and odors to leave sullied surfaces soft, silky, and safe for carpet-sniffing children. A 30–45 minute dryer-vent cleaning can reduce the risk of your dryer overheating and causing a house fire, as well as lower the amount of time it takes to dry your favorite petticoat.