Whole-home duct cleaning
Dryer vent cleaning
Camera inspection
Sanitizing & deodorizingWhole-system duct and dryer vent check with before-and-after photos - you see exactly what came out of your vents
That "$99 whole-house special" is a bait ad - the real number appears once they are in your hallway, or the "clean" is a shop-vac at the register. We photograph the inside of your ducts before and after instead.
Lennox Air Duct Cleaning in Katy, TX | Kestrel Air Duct Houston
We provide Air Duct Cleaning in Katy for Lennox systems nearly every week, and most jobs run between $350 and $650 depending on home size and how long it’s been since the last cleaning. The one thing that makes our Lennox work different here is that we check duct slope and attic conditions before we ever quote a cleaning, because a lot of Katy musty-odor calls turn out to be sagging flex duct, not dirty ducts at all. If your Lennox system needs cleaning, call (254) 347-2738 for a written estimate before any work starts.
Why Katy Residents Choose Us for Lennox Service
We know Lennox equipment the way a mechanic knows a specific make of car. The Elite and Merit series blowers, the Healthy Climate filter cabinets, the Signature Series variable-speed logic. That matters in Katy because most homes here were built since the 1990s, and a lot of them have Lennox systems installed in phases as neighborhoods like Cinco Ranch and the Katy Mills area expanded. Some houses still run original 80% AFUE units on flex duct in vented attics, while others have newer high-efficiency systems with different airflow profiles. Cleaning approach changes with the configuration.
Dale Whitmore, our owner, learned HVAC fundamentals at Los Angeles Trade-Technical College before making Houston his working home, and he built our process around negative-air extraction. That’s a high-powered vacuum pulling dust out of the system rather than pushing it around, paired with rotary brush agitation to scrub duct walls. We’re an independent Lennox service provider, not a factory authorized shop, which means we stock OEM-compatible filters, gaskets, and connectors without being tied to manufacturer upsell programs.
If you’re looking for Lennox sales & service expertise without the dealership pressure, that’s how we operate.
Styles & brands we work with
Common Lennox Air Duct Cleaning Problems We Solve in Katy
- Sagging flex duct in vented attics. Katy’s long, hot summers bake attic spaces, and flex runs strung between trusses lose tension over time. We see this most on Lennox systems with variable-speed blowers because they run longer at low airflow, which gives condensation more time to pool in the low spots of the duct run.
- High-MERV Healthy Climate filters loading up. Spring oak pollen in Katy is relentless, and combined with fall ragweed, it clogs HC16 and HC11 filter media fast. A loaded filter creates bypass air, which lets dust slip around the edge and accumulate on the evaporator coil. Then the blower works harder for the same temperature change.
- Rust flakes and sooty deposits near the plenum. On older Lennox 80% AFUE furnaces, particularly Merit ML180 units from the 1990s and 2000s, heat exchanger surfaces can develop microscopic cracks over years of heating cycles. During a duct cleaning we check supply ducts near the plenum for rust flakes or sooty residue and flag what we find.
- Musty odor from condensation in flex duct liner. South of I-10 in Katy, many Lennox air handlers sit in vented attics, and when flex duct sags between trusses, condensation collects inside the liner. That damp, dark environment is where mold and mildew take hold. Owners call it dirty ducts. Often it’s a slope issue we can fix by re-supporting.
- Oversized condenser short-cycling in humid weather. Katy’s humidity means oversized Lennox condensers reach the thermostat setpoint before they’ve pulled enough moisture from the air. Ducts stay damp, which feeds mold inside flex liners. We check for this pattern during every video inspection and advise on what’s actually causing the problem.
Lennox Service in Katy: What Local Conditions Mean for Your Equipment
Here’s the thing about Lennox systems in Katy that you won’t hear from a generic duct cleaning outfit: the neighborhoods south of I-10, especially the big master-planned communities, have a specific attic profile that causes a predictable set of problems. Homes there typically have air handlers installed in vented attics with flex duct runs that stretch across open truss bays. When those runs lose their hanger tension, they sag into low spots, and Katy’s humidity reliably produces condensation pooling inside the duct. A homeowner calls us because the hallway smells musty and assumes the ducts are dirty. We’ve been on dozens of those calls. What we’ve learned is that the Lennox variable-speed blower makes the problem worse because it moves air slower and longer, giving condensation more dwell time in sagging sections. Our standard inspection checks duct slope and insulation integrity before we recommend any cleaning, because a cleaning won’t fix a sagging run. It’ll just smell musty again in three weeks. That’s the local knowledge that changes the price you pay and whether it solves anything.
Lennox Models & Products We Service in Katy
We clean duct systems across the full Lennox range: Elite Series furnaces like the EL296V and EL280, Merit Series ML196 and ML180 units, and Signature Series SLP98V and XC25 systems where homeowners pair a communicating thermostat with the variable-speed blower. We’re familiar with Healthy Climate filtration platforms including the HC16 media cabinet and the HC11 box filter setup. When we clean or seal, we use OEM or exact-spec aftermarket Lennox-compatible filters, gaskets, and duct connectors. If a flex duct is sagging but the liner is intact, we re-support and insulate it before we’d quote a replacement run. We never upsell parts you don’t need. For Katy homeowners in the broader Katy service area, we can usually schedule within a few days because we’re already running routes here regularly.
See the difference
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Before
AfterLennox Service Pricing in Katy
Most Katy homes fall between $350 and $650 for a full Lennox air duct cleaning, and the price is driven mainly by square footage, number of returns, and how heavy the dust load is. Homes in older sections of Katy with metal ductwork and decades of accumulation sometimes run higher. Newer homes in master-planned communities where flex duct is tight and accessible often come in at the lower end. Our estimate is free, it’s in writing before we touch a single vent, and it includes video inspection so you can see the before and after of your own ducts. Call (254) 347-2738 and we’ll give you an exact number for your system, not a teaser price.
Serving Katy, TX - Our Local Coverage Area
We’re based in the Katy area and know this community well, and we also offer our Dryer Vent Cleaning in Katy. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs – Lennox Air Duct Cleaning in Katy
Because the smell usually isn’t coming from dirty ducts. In Katy’s vented attics, flex duct sagging between trusses collects condensation, and that damp liner is what goes musty. A cleaning won’t fix it. We re-support the duct and check insulation first. If you’ve already paid for a cleaning elsewhere and the smell returned, call (254) 347-2738 and we’ll do a video inspection to find the actual source.
It depends on where the restriction is. If the Healthy Climate filter is loaded with oak pollen and the coil is coated with bypass dust, then yes, cleaning restores airflow and reduces strain on the blower motor. But if sagging flex ducts or improperly sized runs are the real restriction, no cleaning fixes that. We’ll tell you which one you have before quoting anything.
We remove the filter during cleaning and inspect it. A clean filter goes back in when we’re done, or we install a new OEM-compatible one if yours is loaded. Running a negative-air system against a clogged high-MERV filter just fights the vacuum, so we always pull the filter first. It’s a standard step, but it makes a measurable difference in how much debris actually leaves the system.
Fix the sag first, then decide if cleaning is even needed. Re-support and re-insulate the runs, check the liner with a video inspection, and only then determine whether the interior is actually dirty. We’ve re-supported duct in Katy homes and had the musty odor disappear without any cleaning at all. That’s the honest sequence, and it’s what we recommend on every inspection.
Spring oak pollen loads high-MERV filters and settles in supply ducts. Fall ragweed does the same from September through November. Between them, Katy homes accumulate a lot of fine particulate that gets past poorly sealed returns and lands on the evaporator coil and inside flex liners. An annual or every-other-year cleaning timed after ragweed season keeps the system manageable. Call (254) 347-2738 for a free estimate and we’ll give you a straight answer on whether your ducts need it yet.
Service Areas Near Katy
We run Lennox air duct cleaning routes from Katy into the surrounding communities, including Lennox service in Houston proper for customers who live inside the Beltway, plus Richmond and Fulshear where suburban growth mirrors Katy’s own building patterns. We also cover Lennox service in Pearland for homeowners on the south side of the metro. The same written-price, 365-Day Done Right Promise applies on every job, in every zip code.
Book Your Lennox Service in Katy Today
Call (254) 347-2738 for a free estimate. We’ll give you a straight price for your Lennox system in writing before any work begins, and the 365-Day Done Right Promise comes on paper with every job. Clean ducts, straight price, no guesswork.
Written by Dale Whitmore, Owner at Kestrel Air Duct Houston, serving Katy since 2004.