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.
Fast, Reliable Air Duct Cleaning Across Malvern
Air duct cleaning in Malvern typically runs $350 – $650 for a full residential system, and every Hollis job starts with a written price that won’t change once our technician is inside your home. We dispatch crews from our Philadelphia office and serve Malvern properties directly, from the stone twins along King Street to the executive colonials in Willistown Township.
Malvern’s housing stock splits cleanly between two eras, and that split shapes what we find in your ducts. The borough’s 1890s – 1930s homes often carry retrofitted duct runs through unheated stone basements, while the surrounding townships are filled with 1980s – 2000s builds using long flexible-duct trunks that sag and collect debris at every elbow. We’ve cleaned both, hundreds of times, and we adjust our approach accordingly. Call (361) 326-5060 for a free estimate.
Why Hollis Air Duct Cleaning Is Malvern’s Preferred Air Duct Cleaning Company
We’ve been in business since 2004 as part of the Garrison Partners family, and our Air Duct Cleaning in Malvern reputation is built on operational specifics, not slogans. Our technicians arrive inside the quoted window, price every job in writing before touching equipment, and leave the site clean. That’s The Garrison Standard, and it’s how we work on every Malvern call.
Malvern homeowners know the mid-Atlantic humidity pattern: summer cooling runs long enough that condensation pools in poorly insulated attic ducts, feeding musty odors, then winter heating dries and releases that debris as dust. We’ve addressed this exact cycle in homes from the older borough twins near Lancaster Avenue to the newer carriage homes off Paoli Pike. Our crews don’t guess at local conditions; we’ve measured them.
Every Hollis technician is background-checked and uniformed. You’ll know who’s arriving before they reach your door. And our phones are answered by a live person 24 hours a day, 7 days a week, no voicemail loops, no callback queues.
The 365-Day Done Right Promise covers every job in writing. If the work fails within a year, we return and make it right at no charge, including a free second visit. That’s not a satisfaction guarantee; it’s a specific, written obligation.
Ductwork Cleaning in Malvern
Ductwork Cleaning in Malvern requires different tooling depending on whether we’re working in a century-old borough home with metal duct runs or a 1990s Toll Brothers-style build with flexible plastic-core lines. The goal is the same: remove accumulated debris, restore airflow, and eliminate the source of musty or dusty air. A typical residential Ductwork Cleaning in Malvern runs $350 – $550 for a standard system, with larger homes or heavier contamination reaching $650.
We use Rotobrush rotary brush systems for flexible ductwork, the industry standard for scrubbing interior surfaces without damaging thin-walled lines. For older metal systems, we may deploy Nikro negative-air machines that pull debris downstream toward a HEPA-filtered collection unit, preventing redistribution through your home.
Supply Duct Cleaning
Supply ducts push conditioned air into your rooms, so debris here lands directly on your furniture, bedding, and countertops. In Malvern’s newer homes with long branching runs, we often find construction dust and pet dander concentrated at sag points where flexible duct has lost support. Our rotary brush system restores full diameter and airflow.
Return Duct Cleaning
Return ducts pull air back to your HVAC unit, and because they’re under negative pressure, they attract larger particles and can harbor mold in humid conditions. In Malvern’s older stone-basement homes, we’ve found corrosion at metal seams where decades of humidity swings have degraded the original galvanizing. We inspect, document, and clean.
Air Duct Inspection in Malvern
Air Duct Inspection in Malvern is the step most homeowners skip and later regret, especially in the borough’s older housing stock where original ductwork may run through inaccessible spaces. A full video inspection lets us show you exactly what’s inside your system: dust load, mold presence, disconnected segments, or corrosion at seams. A standalone Air Duct Inspection in Malvern runs $150 – $250, and we credit that amount toward cleaning if you proceed.
We recommend inspection before any major HVAC upgrade, after water damage or pest intrusion, or if you’ve noticed uneven heating, musty odors, or visible dust emissions from vents. In Malvern’s post-1990s homes, we frequently find kinked flexible ductwork hidden above drywall that reduces airflow by 30% or more.
Video Documentation
Our inspection includes recorded video you can review yourself. We flag problem areas, explain what each condition means for your system and your air, and give you a written recommendation with no pressure to book immediately.
Pre-Purchase Home Evaluations
Buying one of Malvern’s historic twins or a township colonial? A duct inspection before closing can reveal hidden issues: asbestos-wrapped old lines, corroded metal in stone basements, or crushed flexible segments in newer builds. You’ll negotiate with facts, not surprises.
Trusted Brands We Service in Malvern
Our equipment roster includes Rotobrush rotary brush systems, Nikro negative-air machines, and filtration products from Honeywell, Aprilaire, Abatement Technologies, and Guardsman. These are the same tools commercial crews use, not hardware-store gear, and we stock common parts so Malvern customers aren’t waiting on shipping. If your system needs a filter upgrade or a sealed access panel installed, we typically complete it same visit. We also handle Dryer Vent Cleaning in Malvern and Duct Sealing in Malvern using compatible equipment and the same written-pricing standard.
Common Air Duct Cleaning Problems We See in Malvern Homes
- Condensation and mold in attic ducts. Malvern’s humid mid-Atlantic summers keep cooling systems running into October, and poorly insulated flexible ducts in unconditioned attics sweat continuously. We find mold at trunk-line connections and at sag points where water pools.
- Corroded metal seams in stone basements. The borough’s older homes along King Street and side streets off Lancaster Avenue often have original duct runs through unheated stone cellars. Humidity swings cause sweating in July, corrosion by March, and pinhole leaks that draw basement air into the system.
- Sagged and kinked flexible ductwork. The executive homes built from the 1980s through early 2000s in Willistown and East Whiteland townships used long flexible-duct trunk-and-branch systems. Over time, support straps fail, ducts sag between joists, and airflow drops while dust accumulates at every low point.
- Construction debris in newer systems. Even well-built Toll Brothers-style homes often have drywall dust, wood chips, and insulation scraps left in ducts during construction. Homeowners notice it years later when airflow seems weak or dust never stops settling.
Pricing for Air Duct Cleaning in Malvern, PA
Honest pricing means whole-system ranges, not per-vent teasers that balloon at your door. In Malvern’s market, a typical full residential Air Duct Cleaning runs $350 – $650 depending on system size, contamination level, and accessibility. A standalone Air Duct Inspection is $150 – $250, credited toward cleaning if you proceed. Commercial systems and larger estate homes start at $800 and are priced after walkthrough.
What moves the number: square footage, number of air handlers, presence of mold requiring antimicrobial treatment, and whether we need to cut access panels into finished spaces. We give you one flat price per system, agreed in writing, before any work starts. No per-vent add-ons, no “discovered problems” at the door. Call (361) 326-5060 for your exact quote; estimates are free.
We Also Serve Cities Near Malvern
Our Air Duct Cleaning crews work throughout Chester and Delaware Counties, including Paoli, Lionville, West Chester, and Phoenixville. Each community shares Malvern’s mid-Atlantic humidity challenges but brings its own housing stock quirks, from Phoenixville’s converted mill buildings to West Chester’s mixed historic and student-rental inventory. We adjust accordingly.
Serving Malvern, PA - Our Local Coverage Area
We’re based in the Malvern 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 About Air Duct Cleaning in Malvern
We typically schedule Malvern appointments within 3 – 5 business days, with dispatch coordinated from our Philadelphia office. Call (361) 326-5060 to check current availability; estimates are free.
Yes, we serve the full Malvern area, from the historic twins and stucco homes in the borough along King Street and Lancaster Avenue to the executive colonials and carriage homes in Willistown, East Whiteland, and Tredyffrin townships.
We do not classify duct cleaning as an emergency service; it is a scheduled maintenance job. However, our phones are answered by a live person 24/7, and we will expedite scheduling if you’re experiencing severe mold odors or post-water-damage contamination.
Malvern pricing sits in the same range as comparable Chester County markets: $350 – $650 for a typical residential system. Older borough homes with stone-basement duct runs sometimes require additional access work, which we quote upfront.
Every Malvern job is covered by our 365-Day Done Right Promise in writing. If the cleaning fails to resolve the issue within one year, we return and make it right at no charge, including a free second visit. Call (361) 326-5060 to discuss your specific situation.
Written by Roy Castellanos, Owner at Hollis Air Duct Cleaning, serving Malvern since 2004.




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