Whole-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.
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Before
AfterLennox Air Duct Cleaning in Friendswood, TX | CleanRun Air Duct Cleaning Pearland
Independent Lennox air duct cleaning and HVAC service in Friendswood runs $280-$520 for a complete residential system, with most jobs completed in a single visit. What makes our Lennox work here different is this: we’ve spent years pulling inspection cameras through duct boots off FM 518 and finding dried silt lines from Harvey that no standard clean addresses. Call Friendswood service area at (346) 253-1822 for a written estimate before any work starts.
Why Friendswood Residents Choose Us for Lennox Service
We’ve worked on Lennox equipment across Friendswood since 2013 - from original Merit systems still running in 1970s subdivisions near West Parkwood to Dave Lennox Signature Collection variable-capacity units in newer construction closer to FM 518. Our crew knows how Lennox’s communicating iComfort systems behave when they’re starved for airflow by degraded flex duct, and we stock OEM-spec components for the model lines most common in this market.
Tomas Reyes, our owner, grew up in Queens taking things apart to see how they worked. He studied building systems technology at New York City College of Technology before relocating to Texas and spending the better part of two decades running inspection cameras through ductwork most homeowners never think twice about. His crew has logged jobs across Pearland, including older builds near Silverlake where flexible duct that should have been replaced years ago is still running - and still moving dust through the house every time the system kicks on. Tomas keeps a folded photo of his first inspection camera in his work bag. It stopped working in 2009, but it earned the right to stay.
We are not a Lennox authorized dealer. We’re an independent service provider with documented experience on their equipment, and that independence means we repair what can be repaired rather than steering toward replacement on a manufacturer’s schedule. Every job starts with a written price under Haven Standard Clause 1. Every duct run is photographed before and after. The camera goes in first. Then we talk.
Common Lennox Air Duct Cleaning Problems We Solve in Friendswood
- Flex duct liner delamination from humidity overload. Friendswood’s sustained high humidity - among the highest in the Houston metro - softens the inner adhesive layer of flex duct liners until they separate and balloon. We’ve scoped Lennox systems in 1980s subdivisions where the liner has pulled away from the wire helix for feet at a stretch, creating dead airflow zones that the homeowner only notices as uneven cooling.
- Biological growth at supply registers and duct boots. Homes along Clear Creek and its tributaries took on floodwater during Harvey, and even after drywall replacement, spores remained in ductwork. We regularly find dark staining at the boot-to-register junction in Lennox systems where the combination of residual organic material and year-round humidity has created persistent mold colonies.
- High-efficiency coil icing from restricted airflow. Lennox’s variable-capacity Elite and Signature Collection units modulate down to 35% capacity, but that precision depends on accurate airflow measurement. When downstream duct leaks or dirty blower wheels reduce delivered air, the coil drops below freezing and ices over - a problem we see frequently in Friendswood’s older subdivisions where return duct leakage pulls attic humidity directly into the system.
- Negative pressure at panned-joist returns. Many Friendswood slab-on-grade homes use platform returns or panned floor joists as return pathways. When these leak - and they almost always leak - the Lennox air handler pulls garage fumes, attic heat, and outside humidity into the conditioned space. For communicating systems with iComfort thermostats, this throws off the static pressure readings the board uses to modulate capacity.
- Silt residue from Harvey still circulating. In homes that changed hands after 2017 flood renovations, especially off FM 518 toward Clear Creek, we’ve pulled registers and found dried silt lines inside duct boots that no post-renovation inspection caught. The Lennox blower wheel was essentially a distribution device for decade-old flood sediment.
BeforeAfterLennox Service in Friendswood: What Local Conditions Mean for Your Equipment
Friendswood was among the most severely flooded communities during Hurricane Harvey, with large portions of the city - especially neighborhoods along Clear Creek and its tributaries - taking on feet of standing water. Countless duct systems absorbed floodwater, silt, and biological contamination, and while insurance-driven renovations replaced drywall and flooring, ductwork was routinely overlooked or only partially addressed. Air Duct Cleaning in Friendswood is therefore inseparable from post-flood mold remediation and contamination history in a way that is far more acute here than in most surrounding Houston suburbs.
For Lennox owners specifically, this history matters because Lennox’s high-efficiency variable-capacity systems are particularly sensitive to airflow contamination. The SL22KLV and SL25KCV modulate in 1% increments based on return-air temperature and humidity readings. When the return plenum still carries silt residue or mold spores from 2017, the sensors read inaccurately, the board cycles the compressor inefficiently, and the homeowner pays for precision equipment that can’t achieve its rated SEER. We’ve scoped systems in Friendswood where the blower wheel was coated in a gray film that tested positive for flood-silt minerals - the Lennox unit was working overtime to push air through that restriction, and the variable-capacity logic was effectively flying blind.
At a slab-on-grade home off FM 518 near Clear Creek, we pulled supply registers for a homeowner who’d bought the house after Harvey renovations and found dried silt lines inside the duct boots - no one had cleaned the ducts. Our tech scoped the system, found delaminated flex liner and visible biological growth on the plenum side of the evaporator coil, then performed full-system cleaning with coil treatment, duct sealing at the boot connections, and fresh flex duct runs where the liner had failed. The Lennox air handler’s blower was cleaned, airflow was balanced, and the homeowners finally had a system that wasn’t circulating old flood residue - a result of our Dryer Vent Cleaning in Friendswood process applied to the full air path.
Lennox Models & Products We Service in Friendswood
We service the full range of Lennox residential equipment installed across Lennox sales & service territory in Friendswood:
- Merit Series: ML14XC1 single-stage air conditioners, ML16XP1 and ML17XP1 heat pumps - common in original 1970s-1990s Friendswood subdivisions where the outdoor unit has been replaced but the ductwork hasn’t.
- Elite Series: EL16XC1, EL17XP1, EL18XPV, and EL22XPV - the two-stage and variable-capacity units we see most often in homes built during the 2000s expansion toward FM 518.
- Dave Lennox Signature Collection: SL18XP1, SL22KLV, SL25KCV, SLP98V, and SL280V - premium communicating systems where our duct-side diagnostics focus on static pressure accuracy and coil cleanliness.
- Lennox Complete Comfort: Variable-capacity communicating systems with iComfort thermostat control - these require precise airflow verification that degraded flex duct directly undermines.
For repairs, we use OEM Lennox-spec filter driers, coil components, and control boards where calibration or longevity depends on factory specifications. For duct hardware - flex duct, mastic, registers, and flex connectors - we use professional-grade components from Rotobrush, Nikro, Abatement Technologies, Honeywell, Aprilaire, and Guardsman that meet or exceed original specs. If your Lennox system still holds refrigerant and the coil is sound, we repair and re-seal. If the compressor has failed and the flex duct is 30-plus years old, we’ll show you the camera footage and explain why replacement is the better long-term call.
Lennox Service Pricing in Friendswood
| Service | Price Range | What’s Included |
|---|---|---|
| Complete residential air duct cleaning (single system) | $280-$380 | All supply and return runs, registers, boots, plenum access; before/after photo record |
| Air duct cleaning with evaporator coil cleaning | $380-$520 | Full duct service plus coil treatment, blower wheel cleaning, airflow verification |
| Duct sealing (Aeroseal or manual mastic) | $450-$850 | Leak detection, sealant application, post-seal pressure test |
| Video inspection only | $89-$129 | Full system scope with digital photo record delivered |
| Free estimate | No charge | Written scope and price before any work begins - Haven Standard Clause 1 |
What drives cost: system size, accessibility of attic ductwork, condition of flex liner (delaminated sections require replacement, not just cleaning), and whether the evaporator coil needs treatment. We do not quote per-vent pricing. One flat price per system, agreed in writing before a single panel comes off. Every job includes the Documented Photo Record - inside every run, before and after - delivered as part of the standard job record. For an exact quote on your Lennox system, call (346) 253-1822. Estimates are free.
Serving Friendswood, TX - Our Local Coverage Area
We’re based in the Friendswood area and know this community well. Use the map below to see our service coverage - if you’re nearby, we can almost certainly help.
FAQs - Lennox Air Duct Cleaning in Friendswood
Pull a supply register and shine a flashlight into the duct boot. Dried silt lines - usually a gray or tan ring at the boot’s interior - are the tell. If you see them, or if the boot interior looks stained while the surrounding drywall is new, the ducts were likely not cleaned during renovation. We treat this as a de facto post-flood contamination case: full video inspection, coil assessment, and targeted cleaning rather than a routine maintenance visit. Call (346) 253-1822 and we’ll scope it at no charge with a written estimate.
Yes. Lennox variable-capacity units modulate based on delivered airflow and return-air readings. When flex duct leaks or the blower wheel is dirty, the system can’t reach setpoint efficiently and runs at higher capacity longer. In Friendswood’s humidity, that also means more moisture across the coil and more condensate load. We verify actual airflow against Lennox specs and clean the path the air travels. If your EL22XPV or SL25KCV never seems to cycle down, the ductwork is the first place to look.
It helps if the ducts are actually dirty - and in Friendswood, they usually are. The combination of 30- to 50-year-old flex duct, sustained humidity, and in many areas post-Harvey residue means the airflow path is compromised. Cleaning alone won’t fix delaminated liner or major leaks, which is why we scope first and show you what the camera found. When the ducts are sound and just loaded with debris, removal restores design airflow and lets the Lennox control board modulate accurately. Call (346) 253-1822 for a video inspection and written assessment.
Expect liner delamination, especially at elbows and near the plenum where heat and humidity concentrate. The inner layer separates from the wire helix and creates a balloon that blocks airflow. We replace those sections with new flex duct rather than attempting to clean what’s already structurally failed. For a typical Friendswood slab-on-grade home with attic-run duct, partial replacement of 3-5 runs is common. We photograph every failure and quote replacement separately from cleaning - no combined lump sum where you can’t tell what’s what.
We are an independent service provider, not a Lennox authorized dealer. For critical components - filter driers, coil components, control boards - we use OEM Lennox-spec parts where calibration or system longevity depends on factory specifications. For duct hardware, we use professional-grade components that meet or exceed original specs. We do not install counterfeit or gray-market parts. Every component is named on your written scope before work begins.
Service Areas Near Friendswood
We run Lennox service calls throughout the southeast Houston corridor. Our regular routes include Lennox service in Pearland - where we’ve logged extensive work in older builds near Silverlake with failing flex duct - and Lennox service in Manvel for newer construction with variable-capacity systems. We also cover Fresno, South Houston, and Alvin on scheduled appointments.
Book Your Lennox Service in Friendswood Today
Call (346) 253-1822 to schedule your Lennox air duct cleaning or HVAC service in Friendswood. A live person answers every call. We’ll send a background-checked, uniformed technician identified by name before arrival. You’ll receive a written price before any work starts and a Documented Photo Record of every duct run when the crew leaves. Every job is backed by our 365-Day Done Right Promise and the full H.A.V.E.N. Standard. Free second opinion on any written estimate.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning Pearland, serving Friendswood and the southeast Houston metro since 2013.