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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AfterFast, Reliable HVAC Cleaning Across Andover
HVAC cleaning in Andover typically costs $425 – $695 for a full system cleaning and takes one technician 3 – 5 hours. That’s not a teaser price and it won’t change at the door. We work throughout Andover regularly, from the Phillips District to the subdivisions off Lowell Street, and we know this town’s housing stock well enough to quote you one flat price per system before any work starts. Call (737) 727-2314 and you’ll get a live person, a straight answer, and a written price you can hold us to.
Why Cardinal Air Duct Cleaning Is Andover’s Preferred HVAC Cleaning Company
Most of our Andover customers come to us after a bad experience: a low phone quote that doubled once the technician counted vents, a crew that “cleaned” the ducts but left the blower and coil coated in the same dust that was there before, or a two-hour arrival window that stretched into an afternoon of waiting. We built our process around eliminating exactly those problems. Omar Haddad, who leads our team, set the standard early: one flat price per system, written down and agreed before the equipment comes off the truck, plus before-and-after photos of the homeowner’s own ductwork. Every job is backed by the 365-Day Done Right Promise. If the work isn’t right within a full year, we come back and make it right at no charge. That’s the longest satisfaction window in the trade and it applies to every single booking, no exceptions.
What you’ll notice when we arrive in Andover is that we don’t look or act like a fly-by-night crew. Our technicians are background-checked, uniformed, and you’ll know their name before they knock. We run professional-grade equipment: Rotobrush rotary brush systems, Nikro HEPA-rated vacuums, and Abatement Technologies containment units. That means the loosened debris goes into the vacuum, not back into your living room. And because Cardinal Air Duct Cleaning is part of the Relay Home Co. family, founded in 2005, every booking includes The Relay Standard: a live trackable arrival window, photo documentation of the work, and a digital invoice you can pay from a link on your phone.
Evaporator Coil Cleaning in Andover
Evaporator coil cleaning in Andover is the single most overlooked piece of HVAC maintenance we see, and it matters more here than in most towns because of how Andover’s housing splits. In pre-1900 center and Phillips District homes, retrofit forced-air systems often placed the coil in tight, awkward crawl spaces or attic air handlers where decades of dust and pet dander bake onto the fins. In the 1980s – 2000s subdivisions off Beacon Street, the coils are newer but shorter-cycling systems leave them damp longer, promoting mold growth. A clogged coil drops system efficiency fast and forces your AC to run longer to hit the same temperature, which shows up on your July electric bill. A typical evaporator coil cleaning in Andover runs $225 – $375, and we do it as part of a full HVAC cleaning or as a standalone job.
What the Coil Cleaning Involves
We access the coil at the air handler, apply a commercial-grade foaming cleaner that breaks down the caked-on film, and rinse it with a low-pressure spray that won’t bend the fins. When the coil is in a tight spot we bring our Abatement Technologies containment unit if needed to keep the surrounding area clean. Before we finish, we check the condensate drain line for clogs because a blocked drain in a 1920s Andover colonial with a basement air handler can flood a finished floor in hours.
When It Is Truly Needed
If you’ve never had the coil cleaned and your system is five or more years old, it likely needs it. If you notice weak airflow, uneven cooling between floors, or that musty smell from the vents when the AC kicks on, the coil is usually part of the problem. We’ll camera-inspect before we recommend anything and show you what we found.
AC Duct Cleaning in Andover
AC duct cleaning in Andover means cleaning the full path your conditioned air travels: supply and return trunks, branch runs, registers, the blower motor, and the evaporator coil. Not just blowing out the main trunks with a shop vac and calling it done. Many Andover homes sit on the same loop for years without a proper source removal, and the dust storms that hit the furniture after running the AC are usually the result. A full AC duct cleaning for a typical Andover home runs $425 – $695, one flat price per system, agreed in writing before we touch a single vent.
Negative Pressure and HEPA Filtration
We use a Nikro HEPA vacuum to put the system under negative pressure. That’s a trade term, so let me decode it: negative-pressure extraction means the air inside your ducts is being pulled toward the vacuum at all times, so any dust we loosen with the Rotobrush agitation tool goes directly into the vacuum and not back into your home. This is the single most important difference between a professional job and a cheap one. Cheap crews push air through the ducts without containment, which just relocates the dust from the ducts to your sofa.
Why We Don’t Skip the Blower and Coil
A crew ran an HVAC cleaning in the Phillips District on a 1920s colonial where the homeowner’s complaint was dust settling on furniture hours after vacuuming. Our camera inspection of the supply and return ducts showed a half-inch of drywall dust and framing debris left from a 1990s renovation that had been circulating through the air handler for roughly 25 years. We set the system under negative pressure with HEPA filtration, ran our Rotobrush agitation tools through every branch run, cleaned the blower motor and evaporator coil, and handed over before-and-after photographs of their own ducts. No per-vent upsell. One flat price agreed before we started. That’s the job done right.
Trusted Brands We Service in Andover
We clean and maintain systems of every major brand found in Andover homes: Carrier, Trane, Lennox, Rheem, York, Goodman, Bryant, and Mitsubishi ducted and mini-split systems. Our techs are trained on the blower assemblies, coil configurations, and filter compartments specific to each, and we carry common replacement filters and Guardsman filtration products on the truck so we can upgrade your return-air filtration while we’re there. We also stock Aprilaire media filters for Andover customers who want better whole-home air quality with the same duct footprint. Fast turnaround on parts, no waiting weeks for a specialty filter.
Common HVAC Cleaning Problems We See in Andover Homes
- Renovation dust from old remodels: Homes in the center and Phillips District were often renovated in the 1990s and early 2000s, and the drywall dust from those jobs never left the ducts. It recirculates for decades, coating every surface, until someone actually opens up the system and removes it.
- Skipped coil and blower cleaning: Too many Andover homeowners hire a “duct cleaning” that only addresses the trunks. The coil and blower keep holding dust, so the problem returns within weeks. We clean the entire air path or we don’t call it a cleaning.
- Mold in flex duct in newer subdivisions: The tight, efficient homes off Lowell Street and Beacon Street run their AC harder in summer, and condensate plus restricted airflow in flex duct creates mold conditions that blow a faint earthy smell through the registers. We see this most often in homes built between 1985 and 2005.
- Balloon-framed walls and old gravity ductwork: Pre-1900 Andover homes often have balloon framing and converted gravity systems that pull air from dirty wall cavities and basement gaps. A standard filter can’t catch what those cavities release, so dust accumulates faster than in modern systems.
Pricing for HVAC Cleaning in Andover, MA
Here’s the straight answer, because we think pricing should never be a mystery. A full HVAC cleaning in Andover runs $425 – $695, and that includes the supply and return trunks, all branch runs, registers, blower motor, and evaporator coil. Evaporator coil cleaning as a standalone runs $225 – $375. Blower cleaning alone runs $175 – $275. These are whole-system prices, not per-vent math. You’ll never get a call from us telling you the job “ended up” costing more. We hand you a written price before a single duct is touched, and if the work isn’t right within 365 days, we come back and correct it at no charge. Call (737) 727-2314 for an exact quote. Estimates are free, and a live person answers.
We Also Serve Cities Near Andover
Our crews serve Andover and the surrounding North Shore and Merrimack Valley towns. You’ll find us regularly in Lawrence, Wilmington, Lowell, and Reading for the same flat per-system pricing, the same equipment, and the same 365-Day Done Right Promise. If you’re just over the town line, call and ask: we probably have a crew in your area this week. For a deeper look at the service itself, see our HVAC Cleaning page.
Serving Andover, MA - Our Local Coverage Area
We’re based in the Andover 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 HVAC Cleaning in Andover
One flat price per system, always. We quote a single written price that covers the entire duct system, blower, and coil, and it does not change based on how many vents we count once we’re inside. Per-vent pricing is how dishonest crews quote low on the phone and then inflate the bill in an Andover colonial with 20+ supply and return ducts. We don’t do that. Call (737) 727-2314 and we’ll give you a written price for your exact system before any work starts.
For most Andover homes, every 3 – 5 years is genuinely adequate. If you just moved into an older home in the center or Phillips District and don’t know the last cleaning date, get a camera inspection. If your home had a renovation in the past 10 years and the ducts were never cleaned after, do it now. If you’ve had it cleaned in the last two years and no one in the home has new respiratory issues, you likely don’t need it again yet. We’ll tell you plainly if you don’t need the work. Call for an honest assessment.
We clean both, every time. The evaporator coil and blower motor are part of the same air path as the ducts, and skipping them is why cheap cleanings fail within weeks. Our full HVAC cleaning includes the coil, blower, trunks, branch runs, and every register as one flat price. If you only need the coil done, we price that separately and fairly. Call (737) 727-2314 and we’ll explain exactly what your system needs.
Yes. You’ll get before-and-after photographs of your own ductwork, taken with our camera inspection equipment before we start and after we finish. This is not a stock photo. It’s your system, and you can see the dirt we removed. That’s part of The Relay Standard on every job, along with a digital invoice you can pay from a link. No proof means no way to verify the work. We don’t sell unverifiable work.
HVAC cleaning is a scheduled job, not an emergency dispatch, and we don’t pretend otherwise. We book specific arrival windows, not four-hour blocks, and you get a live trackable arrival time before your booking. If you call early in the week, we can often get a crew to Andover within a few days. For an exact schedule, call (737) 727-2314 and talk to a live person. No phone tag.
Written by Omar Haddad, Owner at Cardinal Air Duct Cleaning, serving Andover and the Merrimack Valley with flat-rate, photo-verified HVAC cleaning.