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 Hempstead, NY | Hollis Air Duct Hempstead
We provide independent Lennox air duct cleaning across Hempstead, and the short answer is this: whole-system cleaning on a Lennox forced-air setup here runs roughly $450 to $900, depending on how many returns, the age of the ductwork, and whether we’re also sealing or coil cleaning. What makes our Lennox work different in Hempstead is the housing stock itself. We’re inside 1950s ranches and 1960s splits every week, dealing with original duct runs, narrow chases, and decades of accumulated oil-based residue. Roy Castellanos has been working these systems in the New York metro area since before most Hempstead homeowners bought their houses. Call (516) 559-4917 for a written estimate.
Why Hempstead Residents Choose Us for Lennox Service
We know Lennox equipment from hands-on work, not manufacturer training. That distinction matters when you live in Hempstead, where the original ductwork is often older than the furnace it feeds. Roy Castellanos grew up in East Los Angeles and picked up his trade fundamentals at Los Angeles Trade-Technical College before spending the better part of two decades working HVAC and duct systems across the New York metro area. He and the crew have been inside homes near Hempstead Lake State Park and throughout the surrounding neighborhoods long enough to know the older housing stock here: tight chases, original ductwork, the works. We service Lennox sales & service equipment independently, including the G26 and G40 furnace lines that are everywhere in Hempstead. Every job gets a written price before we touch a single register, and it’s covered by our 365-Day Done Right Promise: if it’s not done right, we make it right, in writing, for a full year.
Styles & brands we work with
Common Lennox Air Duct Cleaning Problems We Solve in Hempstead
- Blower wheel dust accumulation on G26/G40 units. The G26 and G40 furnaces Hempstead homeowners rely on have blower wheels that pack with dust fast in this climate. When humidity climbs in July and August, that dust absorbs moisture, the wheel gets heavier, the motor pulls more current, and the high-limit switch trips. We clean the wheel, the blower housing, and the return path so the motor isn’t fighting its own debris.
- G40 pressure switch hose clogging from lint and dust. The original return duct in many Hempstead homes was never designed for today’s filtration. Lint and fine particulate back up through the return and clog the G40’s pressure switch hose, which causes intermittent ignition failures that drive homeowners crazy because the furnace works one day and won’t fire the next. We clear the hose, then address the duct contamination that caused it.
- Mold on CBX25UH air handler coils in basements. Hempstead’s humid summers and cold, damp winters promote mold and mildew growth inside poorly insulated ductwork, especially in homes with window AC units and no central dehumidification. The CBX25UH air handler sitting in a basement pull moisture straight into the evaporator coil. Mold spores then move through the supply ducts into living space. We clean the coil, treat the duct surfaces, and explain whether central dehumidification should come next.
- EL296V airflow sensor drift from oil-based residue. The modulating EL296V furnace depends on clean airflow readings to adjust its output. In Hempstead homes with original 1950s-era ducting, decades of oil-based residue from cooking and heating leave a film inside supply ducts that throws off the sensor. The furnace short cycles as a result. We remove the residue, video-inspect the supply runs, and restore the airflow the furnace expects to see.
- Animal intrusion through narrow side-yard duct runs. Hempstead’s compact lot sizes restrict equipment access and concentrate duct runs along side yards where squirrels and raccoons chew through flex duct. We find this constantly in post-WWII single-family homes with original forced-air systems. We remove the nesting material, replace damaged flex, and seal the entry points with commercial-grade mastic and foil tape.
Lennox Service in Hempstead: What Local Conditions Mean for Your Equipment
Hempstead’s building code requires a 10-foot rear yard setback, which forces many Lennox furnace return air ducts to run through narrow side yards where animal intrusion is common. Squirrels and raccoons chew through flex duct there regularly, something we rarely see in Garden City’s wider setbacks. We spend more time on our Air Duct Cleaning in Hempstead side-yard runs than almost anywhere else on Long Island. When a return duct in a narrow side yard gets breached by animals, the system starts pulling in attic insulation, dirt, and whatever else sits in that chase. On Dartmouth Street, our crew cleaned the supply and return ducts of a 1959 ranch with an original Lennox G26 furnace. The return drop in the basement had a mastic-sealed seam that had cracked from house settling, pulling in fiberglass insulation from the joist bays. We removed three pounds of debris, video-inspected the entire return, then sealed the seam with mastic and foil tape. Static pressure dropped and the blower stopped vibrating. That’s what a proper duct cleaning in Hempstead should deliver.
Lennox Models & Products We Service in Hempstead
We work on the Lennox equipment actually installed in Hempstead homes: G26 gas furnaces, G40 gas furnaces, CBX25UH air handlers, and EL296V high-efficiency furnaces. We’re also comfortable with older Lennox models still running in 1940s-through-1970s homes across Hempstead service area neighborhoods. For duct cleaning, we use OEM-style replacement registers and gaskets where available. For sealing and insulation, we prefer commercial-grade mastic and foil tape that outperform the original 1950s materials. We stock what’s needed for fast turnaround on these model lines, and we’re honest when a flex duct on a Lennox system has collapsed or the heat exchanger shows corrosion. In those cases, we recommend replacement rather than cleaning that pushes debris deeper.
See the difference
Before
After
Before
After
Before
AfterLennox Service Pricing in Hempstead
Whole-system Lennox air duct cleaning in Hempstead typically runs $450 to $900, depending on the number of returns, system age, and whether we’re also sealing or evaporator coil cleaning. Evaporator coil cleaning adds $150 to $400. Duct sealing with mastic and foil tape runs $300 to $800 depending on how much of the run we’re addressing. Video inspection is $75 to $150. The price is written down before any work starts, and it does not move at the door. Call (516) 559-4917 for an exact quote. Estimates are free.
Serving Hempstead, NY - Our Local Coverage Area
We’re based in the Hempstead 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 Hempstead
The G40’s high-limit switch trips after cleaning because debris loosened during the process settles back into the blower wheel or blocks airflow through the heat exchanger, and the switch shuts the furnace down to prevent overheating. Hempstead’s humid summers make this worse because dust absorbs moisture and packs tighter. If the furnace is tripping after a cleaning, we video-inspect the supply and return, clear the blower wheel, and confirm static pressure is within the furnace’s spec. Call (516) 559-4917 and Roy will walk you through what he’s looking for.
Along with Dryer Vent Cleaning - Hempstead services, we clean ducts too, and we handle the registers and taped seams with care. Many Hempstead homes still have original 1950s-era floor registers with asbestos-containing paper tape on the duct seams. We do not disturb that tape during cleaning. We work around it, clean the accessible duct surfaces, and if sealing is needed elsewhere we use mastic and foil tape that don’t disturb original materials. If the tape is degrading, we’ll tell you and recommend a licensed abatement contractor before we touch it.
Yes, Hempstead’s humid summers and cold, damp winters create exactly the conditions that let mold grow on CBX25UH evaporator coils, especially in basements with window AC units and no central dehumidification. Duct cleaning removes the spores that have moved into the supply ducts, but the coil itself needs to be cleaned and treated or the problem returns. We offer evaporator coil cleaning as part of the service, then explain whether a whole-home dehumidifier makes sense for your setup. Call (516) 559-4917 for a written estimate.
Yes. Short cycling on an EL296V after a cleaning usually means the airflow sensor is reading incorrectly, often because debris from the cleaning settled elsewhere in the system, or the static pressure is now out of range for the modulating logic. We video-inspect the full duct path, check the sensor readings, and measure static pressure to find the actual cause. If it’s residue that wasn’t fully removed, we finish the job. If it’s a duct restriction the other crew missed, we find it and fix it. Call (516) 559-4917 to schedule a diagnostic.
Duct cleaning itself doesn’t trigger a Hempstead permit, but any duct sealing, duct replacement, or modification to the Lennox system’s return or supply runs may need to comply with the village’s mechanical code, including the 10-foot rear yard setback that affects side-yard duct routing. We’re familiar with Hempstead’s enforcement, and we’ll tell you if the work requires a permit before anything begins. For an exact quote, call (516) 559-4917.
Service Areas Near Hempstead
We clean Lennox systems throughout Hempstead and nearby communities, including Lennox service in Flushing, Lennox service in Jamaica, Massapequa, Long Beach, and Oceanside. Each location gets the same written pricing and the same 365-Day Done Right Promise, backed in writing on every job.
Book Your Lennox Service in Hempstead Today
Call (516) 559-4917 for a free estimate on Lennox air duct cleaning in Hempstead. We’ll give you a written price before any work starts, and Roy Castellanos will make sure the job is done by the book. Clean ducts, straight answers – that’s the whole job.
Written by Roy Castellanos, Owner at Hollis Air Duct Hempstead, serving Hempstead since 2004.