How to Choose a Duct Cleaning Company in Lewisville
Updated 2026-10 · Lewisville, TX
Why it is harder than it looks
Search for duct cleaning in Lewisville and the top results include lead sites with the city's name in the domain, directory listings, and several pages that all turn out to belong to one business. None of that means the company behind any of them is bad. It does mean the search results tell you very little, and the questions below tell you more.
Questions to ask
How do you hold the system under negative pressure?
The answer you want names the equipment: a truck-mounted vacuum or a portable negative-air machine connected to the trunk. A shop vacuum at each register is not that.
Which parts of the system are included?
Supply runs, returns, plenums, registers, blower, coil and drain pan. Get the list in writing, with anything excluded named.
Who works on the air handler, and what is their TDLR licence number?
Texas only exempts the duct runs from licensing. A good company answers this without hesitation.
Do you follow the NADCA ACR standard?
Any company can follow it. If it also claims NADCA membership or certification, you can check that on NADCA's website.
How will you protect the house?
Floor runners, covers on furniture near registers, and a plan for the attic insulation around the air handler. The EPA suggests asking this directly.
What happens if you find something?
A crushed run, a nest, wet insulation. A clear answer, with prices, is better than finding out at the end.
Answers that should worry you
Health promises, especially cures for allergies or asthma. Advice to clean every year. "EPA certified", which does not exist. A firm whole-house price with no questions about the house. Pressure to buy sanitiser or sealant before anyone has shown you the problem. And no physical address or certificate of insurance when you ask for one.
Before you book
Get two or three written quotes, as the EPA advises, and compare scope, not totals. Ask for references from recent jobs in Lewisville or nearby and call one. Check the company with the Better Business Bureau and the Texas Attorney General's consumer complaints if you want a further check.
Call for a free quote. The local company that calls back will expect these questions.
Where to go next
Common questions
Should I choose the company with the most reviews?
Reviews help, but read what they describe. Reviews that mention the attic, the coil and how long the job took say more than a row of five stars.
Is it fine to hire an HVAC company for duct cleaning?
Often, yes, especially since they hold the TDLR licence for the air handler. Ask whether they do the duct runs by source removal themselves or subcontract it.