$37 for a Whole-House Duct Cleaning with Unlimited Supply Air Ducts from Compass Duct Services ($329 Value)

St Louis

Value Discount You Save
$329 89% $292
Give as a Gift
Limited quantity available
Over 80 bought

In a Nutshell

Techs head to residences and thoroughly clean air ducts, dryer vents, and return ducts, potentially improving the air-quality of the home

The Fine Print

Promotional value expires 120 days after purchase. Amount paid never expires. Appointment required. Limit 2 per person, may buy 2 additional as gifts. Limit 1 per household. Must use promotion value in 1 visit. 24-hr cancellation notice required. Service area 50 miles from 63101. Valid only for option purchased. Includes unlimited air ducts plus one return vent. Second option includes the same plus one dryer vent cleaning. For residential single-family homes. Merchant is solely responsible to purchasers for the care and quality of the advertised goods and services.

The Deal

$37 for a whole-house duct-cleaning package ($329 value) * Unlimited supply air ducts * One return air vent * One dryer vent * Unit check

####Central Air Conditioning: A Quick-Change Act at Home

Take a peek at the principles of central air conditioning to understand just what your technician will be adjusting.

A refrigerant is a substance that transforms more easily than most from a gas to a liquid and back again. This shape-shifting is what makes modern air conditioning possible. Refrigerant cools the home by traveling through a compressor, a condenser, and an evaporator—the last a part of the furnace system inside the house, while the other parts reside in an air-conditioning unit that usually sits outside staring longingly at the family it works for.

It might seem natural to think of air conditioning as a process of blowing cool air into the home, but it might be more easily understood as a matter of carrying off hot air. Fans suck air from the home into the system and draw it across the coils of the evaporator, which house liquid refrigerant. As the refrigerant relieves it of its heat, the furnace’s blower and ducts distribute the now-cooler air throughout the home. Meanwhile, under heat, the refrigerant becomes a vapor that flows into the compressor, which further pressurizes the gas and propels it into the condenser.

Now it’s time to get rid of all that heat. In the condenser, heat is radiated away, helped along by the venting and large surface area of the metal fins on the outside of the unit. This lets the refrigerant cool down and return to liquid form, leaving it ready to flow back inside and pick up another load of the home’s heat.

Since it hit the market in 1932, central air conditioning has not only made it possible to build houses in the hottest regions of the country—it’s actually changed the way those houses are built. High ceilings, eaves, awnings, attics, and front porches were once standard elements of home architecture that provided relief from the stifling summer heat and invited bats to come flap their wings to make breezes. Central air made it both possible and, given the cost of installation, desirable to create simpler one-story homes without these architectural flourishes, leading to a post–World War II boom in sprawling modern developments.

Customer Reviews

get the complete service. its worth the money.
MARYANN D. · March 28, 2015
The guys at Compass Duct Services did a crazy, amazing job at my home! This was my first time and they were very informative and friendly! Definitely will recommend them to all my friends and family! Good job guys!!
Israela S. · December 10, 2014
Awesome company to work with, great offer on the groupon site.
Chris J. · December 10, 2014

By purchasing this deal you'll unlock points which can be spent on discounts and rewards. Every 5,000 points can be redeemed for $5 Off your next purchase.
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