Longmont, Colorado

Air Duct Cleaning in Longmont, CO

6 air duct cleaning companies serve Longmont, rated 4.8★ on average across 2,809 reviews. 6 of them hold 4.5 stars or better.

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Why Longmont homes need air duct cleaning

Longmont ducts work all year, carrying cooled air through the summer and forced-air heat through the winter. Pets, a move into a new home and a recent remodel are when dust and debris build up enough to matter. Longmont averages about 244 freezing nights a year, and every one runs the furnace air through your ducts. 39% of homes here were built before 1980, so many duct runs are decades old. About 18% of residents moved into their home in the past year, and a new home is a common time to have the ducts cleaned. Searches for duct cleaning in Colorado peak in June and July. 3 of the 6 companies listed here also offer dryer vent cleaning.

Air duct cleaning services in Longmont

Removal of dust, debris, and contaminants from HVAC supply and return air ducts, including registers and grilles, to restore airflow and indoor air quality.

Residential
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Containment, removal, and mitigation of indoor mold growth — including affected materials and the underlying moisture source — to restore healthy indoor conditions.

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Air duct cleaning companies in Longmont

6 providers

Air duct cleaning questions Longmont homeowners ask

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How do I choose an air duct cleaning company in Longmont?

All 6 Longmont companies here hold 4.5 stars or better.

  • A written, itemized quote before work starts: what's included, any access fees, and no extras without your OK.
  • The scope covers the supply and return ducts, the blower and the coils, not just the vent covers.
  • Ask how debris is collected (negative-pressure collection) and how your ducts and home are protected.
  • Before-and-after photos of your own system.
  • Mold claims come with evidence, such as a sample or a test, before any chemical treatment.
  • Walk away from bait "whole-house" prices.
  • For repair or sealing work, check the contractor's Colorado license with your city or county building office.

How we list providers

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What should I check before hiring a duct cleaner in Longmont?

Look at how long the provider has been in business, check for industry certifications like NADCA, and review the depth and recency of their customer feedback. This helps you gauge their experience with the specific systems found in Longmont homes before booking.

What factors affect the cost of air duct cleaning in Longmont?

Price usually depends on the size of the home, the age of the ductwork, and how accessible the vents are. Since 48% of homes in Longmont were built between 1980 and 2009, older systems often require more time to clean than newer construction.

How often should I have my air ducts cleaned in Longmont?

Colorado’s dry air and temperature swings cause HVAC systems to cycle more frequently, which pushes dust through ducts. Given that the median year built for homes here is 1989, systems have likely accumulated significant debris over the decades.

What other services do Longmont providers usually offer?

Many providers handle A/C system repair, heating system installation, and dryer vent cleaning alongside standard duct work. This mix allows homeowners to address multiple HVAC needs through a single local team.

Does this directory cover all of Longmont?

Yes — providers serve key areas including Prairie Village, Hilltop Village, and Dominion. This ensures residents in these neighborhoods can find local specialists for their specific duct and vent needs.

How often should HVAC filters be changed?

Standard 1-inch filters typically need replacement every 90 days, while pleated or high-efficiency filters last up to 6 months. If you have pets or allergies, check them monthly and swap them out as soon as they look visibly dusty to keep airflow efficient.

How long does black mold remediation take?

A typical black mold remediation project in a residential home takes between one and five days, depending on the size of the affected area and the level of containment required. This timeline includes drying the materials, removing contaminated sections, and verifying air quality before sealing the space.

Is duct cleaning a waste of money?

Duct cleaning is worth the investment when you notice visible debris, musty odors, or a sudden increase in dust settling on surfaces. It removes the buildup that restricts airflow and helps your HVAC system run more efficiently, which can extend the life of your equipment.

Longmont is in Boulder County, part of the Boulder metro. Serving 4 ZIP codes, including 80501, 80502, 80503, 80504 Air Duct Cleaning in Colorado How we list providers
All 4 ZIP codes
  • 80501
  • 80502
  • 80503
  • 80504