All reviews are from people who have redeemed deals with this merchant.
Reviewed November 26, 2014
What You'll Get
Most homeowners don't get around to cleaning their air ducts until the accumulated dust causes the criminals hiding inside them to sneeze all night long. Breathe easy with this Groupon.
- $79 for an air-duct cleaning for unlimited vents, returns, and dryer vents ($289 value)
The Composition of Dust: Of Mites and Mars
When the cleaners are finished, you’ll be able to breathe easier. Increase your satisfaction with a look at one thing they’ve banished: dust.
Whether you're resting in a mountain cabin, traveling through a city, or being vented out an airlock into outer space, dust is all around you. Microscopic particles—usually a combination of soil, pollen, skin cells, and minerals—can pile up quickly indoors. The problem is exacerbated by tiny creatures called dust mites, which gather in groups of up to 500 per gram of dust to devour flakes of human skin while multiplying in number, excreting waste, and probably chittering away. No matter where you are on Earth, a mote of dust is presently traveling straight toward your eye, thanks to the persistent creation of dust in almost any climate humans inhabit.
Even beyond our planet, dust is ubiquitous: astronomers face the universe's untidiness every time they peer through a telescope and find formations of cosmic dust, which absorb the visible light around them. Although it comes from exploding stars rather than flaky humans, space dust isn't so different from the domestic variety: a 2007 paper published in IEEE Transactions on Plasma Science explored the similarities between the formation of dust bunnies under beds and the coagulation of space dust into planets.
The Fine Print
Promotional value expires 90 days after purchase. Amount paid never expires. Limit 1 per person, may buy 1 additional as a gift. Limit 1 per household. Appt required. Homeowner must be present during appt. Offer cannot be combined with other specials or offers. Not valid toward current or past jobs. Valid for residential service only. Not valid for mold remediation, moisture extraction or leak repair. If one of these conditions is detected, a quote will be given for the additional service. Valid for one Hvac unit. Extra $99 fee/additional Hvac unit. Valid within 80 miles of downtown Houston. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.