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.
Honeywell HVAC Cleaning in San Antonio: What to Know First
We clean Honeywell HVAC systems throughout San Antonio, and most jobs are completed in a single visit, usually two to four hours depending on how many components need work. A standard Honeywell system cleaning here runs $385 – $650 for the full job, with the price written down and handed to you before we touch a single panel. This page is for Honeywell owners in San Antonio who want to know what their system actually needs, what it costs, and how we go about it. If you’d rather just talk it through, call (254) 347-3897 and a live person answers.
How Honeywell Products Fail – and How We Fix Them
Honeywell builds solid equipment, but two decades of pulling these systems apart has taught us exactly where they get dirty and why. Here’s what we see most often in San Antonio homes:
- Honeywell FocusPRO and Prestige IAQ thermostats reading wrong. When the evaporator coil is caked with dirt and the blower wheel is clogged, the system runs longer to hit the setpoint. The thermostat gets blamed, but it’s usually the fouled coil underneath. We clean the coil and blower, airflow returns to spec, and the thermostat suddenly reads accurate again. No thermostat replacement needed in most cases.
- Honeywell TrueCLEAN and Ultraviolet air purifiers losing effectiveness. We find these units in a lot of San Antonio homes because of allergy season and the dust that blows in from the Hill Country. When the coil upstream is dirty, the purifier is fighting a losing battle. We clean the coil first, then verify the purifier’s lamp and cell are actually doing their job. Dirty coil plus working purifier is wasted electricity; clean coil plus working purifier is the whole point.
- Honeywell whole-home humidifiers and bypass dampers sticking. San Antonio’s humidity swings are hard on the damper assemblies in Honeywell’s HE series humidifiers. Mineral buildup from our hard water makes the damper stick open or shut. During an HVAC cleaning we flush the humidifier pad housing, check the drain line, and free up the damper so it actually opens when the system calls for humidity. It’s a small fix that makes a real difference in how the house feels in July.
- Honeywell media air cleaner cabinets with neglected filters. The Honeywell F100 and F200 media cabinets hold a deep pleated filter that homeowners often forget about because it’s tucked inside the ductwork. When that filter is clogged, the blower works harder and the evaporator coil gets dirtier faster. Part of every Honeywell cleaning job is checking that cabinet, noting the filter size, and showing you what we pulled out of it before we put a fresh one in.
- Honeywell zone control boards triggering false airflow faults. Honeywell’s TrueZONE panels are common in multi-story San Antonio homes. When dampers get gummed up with dust and the coil is restricted, the board logs airflow errors that look like equipment failure. We clean the dampers and the coil, then run the system through its zones to confirm the pressures are back where they belong. Often that clears the codes without replacing a single part.
Styles & brands we work with




Our Honeywell HVAC Cleaning Process
Here’s how a Honeywell job goes from first call to final walkthrough:
- 1
Call or book online. You talk to a live person, not a voicemail tree. We schedule a window you can track, relayed to you through The Relay Standard, so you know exactly when we’re pulling up.
- 2
Walkthrough and system ID. Omar or one of the crew checks the model numbers on the air handler, condenser, and any Honeywell accessories like humidifiers or purifiers. We note what’s accessible, what’s dirty, and what might need attention beyond the cleaning itself.
- 3
Written price before work starts. We hand you a number that covers the whole cleaning, whether that’s the evaporator coil, blower wheel, condenser, or all three. It doesn’t change at the door.
- 4
The cleaning itself. We use Rotobrush rotary brush systems to dislodge debris from coils and blower assemblies, then Nikro HEPA vacuums running negative-pressure extraction, meaning the loosened dirt goes straight into a sealed vacuum, not back into your living room. On systems with accessible duct runs, we use Abatement Technologies containment to keep the workspace isolated.
- 5
Verification and photo proof. Before we finish, we run the system, check temperature splits across the coil, and show you before-and-after photos of everything we touched. You see the coil before it was cleaned and after. No guessing whether the work happened.
- 6
Cleanup and guarantee. We leave the mechanical room cleaner than we found it. Every job is covered by our 365-Day Done Right Promise: if the work isn’t right within a full year, we return and correct it at no charge.
See the difference
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After
Before
After
Before
AfterWhat Honeywell HVAC Cleaning Costs in San Antonio
Here’s the straight pricing picture for Honeywell systems in San Antonio. These are whole-system ranges, not per-component teasers:
- Evaporator coil cleaning only: $185 – $285. Common on Honeywell systems where the blower is accessible and the coil is the main restriction.
- Full air handler cleaning (coil plus blower wheel): $385 – $650. This is what most San Antonio homes with Honeywell equipment need, especially if the filter hasn’t been changed on schedule.
- Condenser coil cleaning (outdoor unit): $150 – $240. San Antonio’s heat and construction dust clog outdoor coils fast. We pull the covers, flush the coil fins, and straighten bent fins where needed.
- Complete HVAC system cleaning (indoor and outdoor units): $550 – $890. Best for homes where the outdoor condenser hasn’t been touched in years and the indoor coil is restricting airflow.
What moves the price? Access (crawlspace-mounted air handlers cost more than closet units), how badly the coil is impacted, and whether we need to remove and reinstall the blower assembly to clean it properly. You get the number before we start, and it doesn’t change. Call (254) 347-3897 for a free estimate on your Honeywell system.
Why San Antonio Homeowners Call Cardinal Air Duct San Antonio for Honeywell Work
As an independent Honeywell service provider, we’re not affiliated with Honeywell and we don’t pretend to be. What we are is a local crew that knows these systems inside and out, and we back the work with a guarantee that’s longer than anyone else in the trade. Every job carries our 365-Day Done Right Promise: if it’s not right within a year, we’re back at no charge. We also service Lennox, Trane, and Carrier equipment, which means we’re not brand-blind; we know how Honeywell systems behave compared to the rest, and we know when a problem is specific to your unit rather than generic HVAC trouble. Our techs are background-checked, uniformed, and arrive with professional equipment from Rotobrush, Nikro, and Abatement Technologies. And because we’re part of the Relay Home Co. family, founded in 2005, every booking includes a live trackable arrival window, before-and-after photos, and a digital invoice you can pay from your phone. Clean ducts, straight answers, real price – that’s the whole pitch.
FAQs
No, cleaning your Honeywell HVAC system will not void the manufacturer’s warranty. In fact, Honeywell’s warranty documentation assumes routine maintenance, and a heavily fouled coil or blower that causes a covered part to fail is exactly the kind of neglect that can complicate a claim. We use cleaning methods that don’t damage fins, blower wheels, or electrical components, and we document everything with photos in case you need to show the work was done properly.
Most Honeywell HVAC cleanings in San Antonio homes run $385 – $650 for a full air handler cleaning, which includes the evaporator coil and blower wheel. The price is written down and handed to you before the work starts, and it doesn’t change at the door. Call (254) 347-3897 for an exact quote on your system – the estimate is free.
The low quotes you see on HVAC cleaning are usually bait-and-switch pricing: a teaser rate that covers a quick visual check, with the actual cleaning priced per component once the tech is already on site. Our quote is a single flat price for the entire system, written down before we touch anything. If someone quotes you $49 for whole-home HVAC cleaning, ask them to put in writing that it covers the evaporator coil, blower wheel, and condenser.
You’ll see before-and-after photos of your own equipment. We photograph the evaporator coil, blower wheel, and condenser before cleaning and again after, then give you the images. You’ll also notice the difference in airflow and cooling performance within the first day, especially in San Antonio’s heat. The photos are your proof, and the 365-Day Done Right Promise means we stand behind the work for a full year.
Every two to three years in most San Antonio homes, but that shortens to one to two years if you have pets, construction nearby, or run the system hard through our summers. Honeywell media filters help, but they don’t stop all the fine dust that settles on the evaporator coil. If you’re seeing a two-degree temperature split between rooms or the system runs longer than it used to, the coil is probably due.
Written by Omar Haddad, Owner, Cardinal Air Duct San Antonio at Cardinal Air Duct San Antonio, serving San Antonio and nearby areas.