Lennox Air Duct Cleaning Service Nationwide

Why Houston Homeowners Choose Lennox Air Duct Cleaning

Hollis Air Duct Houston provides independent Air Duct Cleaning services for Lennox systems, evaporator coil cleaning, and duct sealing across Houston, TX. We’ve serviced Lennox systems for over a decade, from older G60 and G61 furnaces to current Dave Lennox Signature Collection and iHarmony zoned installations. We are not affiliated with or authorized by Lennox. We’re an independent company that knows how Lennox blowers, coils, and ducted zoning behave in Houston’s humidity. If your Lennox system is moving less air or carrying dust back into the house, call (713) 936-5800 for a free estimate.

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Why Trust Hollis Air Duct Houston for Your Lennox Air Duct Cleaning?

Our crew has spent years inside Houston attics and crawl spaces looking at Lennox ductwork. Roy Castellanos, our owner, picked up his trade fundamentals at Los Angeles Trade-Technical College and has been working air duct systems in Houston homes and businesses for well over a decade. That includes jobs out in the Energy Corridor and Humble Lennox service calls where older construction means ductwork that hasn’t seen a brush since the Clinton administration. We understand Lennox equipment the way a mechanic understands a specific engine family. When a Lennox SL280 furnace with iHarmony zoning shows low airflow in one zone, we don’t guess. We trace the flex runs, check the damper collars, and measure static pressure. We use OEM Lennox filters, gaskets, and access panels when available. For standard duct hardware we buy industrial-grade sheet metal and flex, not hardware-store parts. Every job gets a written price before work begins and is covered by our 365-Day Done Right Promise. If the work fails within a year, we return and make it right at no charge. That includes a free second visit if needed.

Common Lennox Air Duct Cleaning Problems We Fix in Houston

• Flex duct separated at iHarmony zone damper collars. Lennox iHarmony zoning relies on dampers that open and close to direct air. In Houston’s heat, the flex duct attached to those damper collars can pull loose over time. When that happens, air bypasses the damper entirely. One zone gets weak airflow while others run fine. We re-secure the flex, seal the collar with mastic, and verify the static pressure matches the original design.
• Evaporator coil drain pan overflow wetting the supply plenum. Houston’s dew point sits high most of the year. Lennox coils pull gallons of condensate out of the air, and if the drain pan overflows or the line clogs, water wets the supply plenum. That moisture breeds mold inside the ducts. We clean the coil, clear the drain, and dry and sanitize the affected duct section.
• Aerodynamic lift on high-efficiency blowers pulling loose dust into the return drop. Lennox variable-speed blowers in the SL280 and SLP99 move a lot of air. When return ducts leak or sit loose, that blower pulls dust, insulation, and shell debris straight into the return drop. The result is a system that filters clean air but recirculates attic debris. We seal the return, clean the drop, and verify the filter cabinet seals tight.
• High static pressure from modified duct runs causing noise and leakage. Lennox variable-speed motors ramp to match demand. If a previous contractor added or re-routed duct runs without recalculating static, the motor works harder and the ducts get noisier. We measure static, identify the restriction, and correct it with proper duct sizing or sealing.
• Dust returning quickly after a cleaning. Houston homes built after 2000 are tightly sealed, which traps dust. Combine that with pollen from pine, oak, and ragweed, plus construction dust from new subdivisions in Katy and Cypress, and ducts reload fast. If dust returns weeks after a cleaning, the real problem is usually a return-side leak pulling unfiltered air. We find the leak and seal it.

Lennox Parts & Our Repair-vs-Replace Approach

We use Lennox OEM filters, gaskets, and access panels whenever they’re available. For duct hardware like sheet metal, flex, and mastic, we buy industrial-grade materials from commercial suppliers. The honest rule on repair versus replace is simple: we replace duct sections only when the duct sealing has failed or the motor is compromised. We don’t push unnecessary parts. A separated flex run gets re-secured and sealed, not replaced. A crushed return gets rebuilt. A rusted plenum gets replaced. If you’re not sure whether your Lennox ductwork needs repair or full replacement, call (713) 936-5800 and we’ll give you a straight answer with a written price.

Our Lennox Service Process – Step by Step

1. 1
   Diagnosis. We inspect the full duct system, measure static pressure, check iHarmony damper operation if present, and run a video inspection so you see what we see. No guesswork.
2. 2
   Written price. Before any work starts, you get a written price for the exact scope. The price does not move at the door.
3. 3
   The work. We use Rotobrush rotary brush systems and Nikro negative-air machines. Coil cleaning, duct sealing, and sanitization are done to the standard the system requires.
4. 4
   Test. We verify airflow, check for leaks, and confirm the system runs at the static pressure the Lennox equipment was designed for.
5. 5
   Warranty. Every job is covered in writing by the 365-Day Done Right Promise. If it fails within a year, we return at no charge.

Lennox Products We Service & Install in Houston

We work on the full Lennox residential lineup: Dave Lennox Signature Collection furnaces and air conditioners including the SL280 and SLP99, XC20 and XC25 air conditioners; Elite Series models like the EL296V and EL195; and Merit Series units including the ML180 and ML296. We also handle iHarmony zoning systems, Lennox evaporator coils, and the ductwork attached to all of it. We stock common Lennox-compatible filters, gaskets, and access panels locally for faster turnaround on Houston jobs.

We Also Service These Brands

Hollis Air Duct Houston is not tied to a single manufacturer. We service and clean duct systems for Trane and Carrier equipment as well. If you have a mixed system or a non-Lennox unit, the same written pricing and 365-Day Done Right Promise apply. One standard, every brand.

FAQs – Lennox Air Duct Cleaning Service in Houston

Book Your Lennox Service in Houston, TX

If your Lennox system is moving dust, smelling musty, or losing airflow in one zone, call (713) 936-5800. We’ll schedule a visit, inspect the ductwork, and give you a written price before any work begins. Free estimates, backed by the 365-Day Done Right Promise.

Written by Roy Castellanos, Owner at Hollis Air Duct Houston, serving Houston since 2004.