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.
Aprilaire Air Duct Cleaning in San Antonio: What to Know First
Aprilaire air duct cleaning in San Antonio typically runs $450 – $850 for a full system on a standard single-family home, and we complete most jobs in 3 – 5 hours. We’re an independent Aprilaire service provider – not affiliated with or authorized by Aprilaire – and we work on every model line they’ve made, from older 2200-series media cabinets to current 5000-series electronic air cleaners paired with whole-home duct systems. If your Aprilaire equipment has been running on San Antonio air for more than two years, this page will tell you exactly what we find, what it costs, and how to book it.
Call (254) 347-3897 for a free estimate. A live person answers, 24/7.
How Aprilaire Products Fail – and How We Fix Them
Aprilaire makes solid equipment. But any air cleaner or humidifier bolted to ductwork inherits that ductwork’s problems. Here’s what we see on Aprilaire jobs across San Antonio:
- Aprilaire 5000-series electronic air cleaners and micron-level clogging. The 5000’s media packs and ionization cells catch fine particles that basic fiberglass filters let through. But on the return side, that means the duct walls behind the Aprilaire unit get coated with ultrafine dust that bonds to the metal. Our fix: HEPA extraction with Nikro negative-pressure units while we work from the air cleaner housing backward toward the plenum. Just sweeping the ducts won’t touch this film.
- Aprilaire 2200/2210 media cabinets on older San Antonio ranches and return-side restriction. Homes in Alamo Heights and Jefferson built in the 60s and 70s often have undersized returns. People solve weak airflow by installing a better filter cabinet, but the real restriction is inside the return ducts: 50 years of plaster dust, pet hair, and the occasional dead rodent. We clean those returns with Rotobrush agitation and document the before-and-after airflow with a manometer.
- Aprilaire humidifiers (600-series and older 550/560 models) and mineral scale migration. San Antonio water is hard. The bypass-style Aprilaire humidifiers pull air from the supply plenum across a water panel, and over time the hard-water scale flakes off and gets sucked into your supply ducts. You’ll see a fine white dust on your vents – it looks like drywall dust but it’s calcium carbonate from the humidifier. We address this by cleaning the supply ducts and verifying the humidifier drain line is pitched correctly so scale drains out instead of drying inside the cabinet.
- Aprilaire 4000-series and older electronic units with failed power supplies. These units predate the 5000 series and many are still running in San Antonio homes near Lackland AFB. When the power supply dies, the pre-filter keeps catching large particles but the electronic cell does nothing – and the duct system downstream stays dirty because nobody notices the Aprilaire unit stopped charging. Part of our process on any Aprilaire job is checking whether the unit itself is actually pulling its rated voltage. If it’s not, cleaning the ducts without fixing the air cleaner means the system will re-coat within a year.
- Aprilaire dehumidifier setups (E-series and 1850/1870) and condensate contamination. Whole-home Aprilaire dehumidifiers sitting on the supply side can develop standing water issues if the condensate line clogs in San Antonio’s summer humidity. That water breeds microbial growth that spreads through the supply ducts – a musty smell when the system first kicks on. We clean the ducts with containment and offer Guardsman antimicrobial treatment where the growth is confirmed. We don’t spray chemicals at problems we haven’t verified with video.
Styles & brands we work with




Our Aprilaire Air Duct Cleaning Process
Every Aprilaire job we run in San Antonio follows the same sequence. No surprises, no shortcuts:
- 1
Live-person booking. You call (254) 347-3897. You get a written price range over the phone based on square footage and number of systems. We set a live trackable arrival window – that’s The Relay Standard.
- 2
Walkthrough and written price. Our tech arrives in uniform, checks the Aprilaire unit and duct layout, and hands you a written flat price before any duct is touched. That number does not change at the door.
- 3
Containment setup. We run Abatement Technologies negative-air containment so anything we dislodge goes into the Nikro HEPA vacuum, not back into your living room. Omar Haddad is exacting about this step – it’s the difference between cleaning and dust shuffling.
- 4
Agitation and extraction. Rotobrush rotary brushes scrub the supply and return ducts, branch runs, and the plenum. The Nikro HEPA unit runs the whole time, pulling loosened debris out at negative pressure. This is what actually removes the bonded dust from Aprilaire return-side buildup.
- 5
April aire unit inspection and filtering check. We inspect the Aprilaire cabinet, test for proper voltage (on electronic models), check the filter or media condition, and confirm the humidifier or dehumidifier isn’t feeding new debris into the system.
- 6
Video proof and payment. Before-and-after photos of your actual ducts, a digital invoice you can pay by link, and the 365-Day Done Right Promise in writing. If it’s not right within a full year, we come back and make it right at no charge.
See the difference
Before
After
Before
After
Before
AfterWhat Aprilaire Air Duct Cleaning Costs in San Antonio
Here’s the honest breakdown for most San Antonio homes. These are whole-system prices, not per-vent games:
- Single system, single return (1,500 – 2,500 sq ft): $450 – $650
- Larger single system or two systems (2,500 – 3,500 sq ft): $600 – $850
- Add a second return or deep Aprilaire 5000-series buildup: +$100 – $200
- Aprilaire unit inspection and filter/media report: included at no extra charge
What moves the price: number of systems, duct length, access difficulty (crawl spaces, attics in San Antonio summer heat), and how long it’s been since the last cleaning. You’ll have a written price before any work starts. Call (254) 347-3897 for a free estimate specific to your home.
Why San Antonio Homeowners Call Cardinal Air Duct San Antonio for Aprilaire Work
We’re part of the Relay Home Co. family, founded 2005, and every location operates under The Relay Visibility Guarantee. That means you get a live trackable arrival time, before-and-after photo documentation, and a digital invoice payable by link. Our techs are background-checked, uniformed, and know Aprilaire equipment well enough to tell you whether the problem is the ducts, the air cleaner, or both. When a Lennox, Trane, or Carrier system is working alongside an Aprilaire cabinet, we know how they interact – that multi-brand experience means one visit gives you the full picture, not a one-brand guess. Our 365-Day Done Right Promise covers every job, not select ones. Clean ducts, straight answers, real price – that’s the whole pitch.
FAQs
Proper air duct cleaning by an independent contractor does not void an Aprilaire product warranty. Aprilaire warranties cover their equipment, not the ductwork. What can affect warranty coverage is running the system with a severely clogged filter or unserviced electronic cell for extended periods. We document the Aprilaire unit condition with video on every job so you have a record of proper equipment care, which is exactly what any warranty claim should reference.
Every 3 – 5 years for most San Antonio homes with Aprilaire filtration. The city’s high dust load, cedar season in December and January, plus the year-round air conditioning runtime means ducts accumulate debris faster here than in milder climates. Homeowners near construction zones, those with pets, or anyone running a 5000-series electronic air cleaner with a failed power supply will need cleaning sooner. Call (254) 347-3897 and we’ll help you figure out what you’re actually looking at, not a generic timeline.
Low quotes in this trade usually mean per-vent pricing that balloons once the tech is in your home, or a “cleaning” that’s just a shop vac pressed into a few vents. We don’t play that game. Our price is whole-system, written in hand before work starts, and the work is done with Rotobrush agitation and Nikro HEPA extraction under negative pressure. A cheap duct cleaning that leaves bonded return-side dust intact isn’t cheap – it’s just less expensive dust shuffling.
You get before-and-after photos of your actual ducts, taken with a video inspection camera, delivered digitally before we leave. Not stock photos. Not a verbal assurance. Your ductwork, your before-and-after, on your phone. That’s The Relay Standard, and it applies to every booking without exception.
Yes. We inspect the Aprilaire cabinet, check the media pack or filter condition, test electronic cell voltage where applicable, and clean accessible internal surfaces so the filtration system isn’t re-contaminating cleaned ducts. Aprilaire unit servicing is included at no extra charge on full-system cleaning jobs. If the unit needs repairs, we’ll give you a written price before doing anything else.
Written by Omar Haddad, Owner, Cardinal Air Duct San Antonio at Cardinal Air Duct San Antonio, serving San Antonio and nearby areas.