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.
Guardsman HVAC Cleaning in Austin: What to Know First
Independent Guardsman HVAC cleaning in Austin typically runs $325 – $560 for a full system cleaning, and most jobs are completed in a single visit. We clean the evaporator coil, blower assembly, condenser fins, and air handler cabinet on Guardsman equipment, then show you before-and-after photos of every component. If you’ve noticed weak airflow, a musty smell when the system kicks on, or your Guardsman unit cycling longer than it used to, this page will tell you exactly what’s going on.
We’re Cardinal Air Duct Austin, and we work on Guardsman furnaces, air handlers, and condensers across Travis County. We’re an independent Guardsman service provider, not an authorized dealer, which means our loyalty is to you and getting the job done right, not to keeping a manufacturer’s service contract alive. Call (940) 283-6595 for a written quote before any work starts.
How Guardsman Products Fail – and How We Fix Them
Guardsman equipment is built to handle Texas heat, but Austin’s particular dust and humidity pattern hits some components harder than others. Here’s what we pull apart on a Guardsman job and what we find:
- Evaporator coil fouling on Guardsman high-efficiency lines. The tighter fin spacing on Guardsman’s higher-SEER condensing units traps Austin’s fine caliche dust faster than older 10-SEER models. Once that dust binds with the coil’s natural condensation, you get a paste that cuts heat exchange by up to 30 percent. We clean it with a coil-safe foaming agent and low-pressure rinse, because high-pressure washing on these fins just folds them over. A folded fin is a ruined coil.
- Blower wheel imbalance from caked return-side dust. Guardsman air handlers sit in attics here, and attic dust gets into the return plenum every time a flex duct connection loosens. The blower wheel loads up unevenly, starts to wobble, and takes out the bearings. We remove the wheel, wash each blade, and rebalance before remounting. It’s not a quick spray-and-go; it’s the only way to keep the motor alive.
- Condenser coil plugging on Guardsman units near live oaks. West Austin and Tarrytown homes with mature live oaks coat condenser fins in pollen and leaf debris every spring. Guardsman condensers route the coil behind a louvered panel that hides the build-up until head pressure climbs and the compressor starts short-cycling. We pull the top, split the coil if needed, and flush from the inside out, because cleaning only the visible face leaves half the coil blocked.
- Drain pan biofilm in horizontal Guardsman air handlers. Guardsman horizontal units installed in low-profile attics don’t always get the slope they need on the drain run. Standing water breeds biofilm, the pan fills, and the float switch shuts the system down. We clean the pan, flush the line, and apply a time-release pan treatment. If the unit’s sitting out of level, we tell you so and shim it while we’re in there.
- Heat exchanger dust accumulation on Guardsman furnaces. Even a clean filter lets some dust through, and on a gas Guardsman furnace that dust bakes onto the heat exchanger and produces that faint burning smell on first fire-up each fall. We vacuum the exchanger surface and clean the burners at the same time. It’s a maintenance item most people skip until the smell shows up.
Styles & brands we work with




Our Guardsman HVAC Cleaning Process
Every Guardsman cleaning job follows the same path. No surprises, no shortcuts, and you see the work as it happens.
- 1
Call and get a written price. You call (940) 283-6595, describe your Guardsman system, and we send a written quote before we ever touch the equipment. That price does not change at the door.
- 2
System diagnostic. We check static pressure, temperature split, and electrical draw on the blower motor. This tells us whether cleaning will solve your issue or if there’s a component wearing out behind the dirt.
- 3
Containment and extraction. We set up negative-pressure containment with Abatement Technologies units so loosened debris goes into the HEPA vacuum, not into your attic or living space. The return plenum, supply plenum, and evaporator cavity all get sealed off before we start.
- 4
Component cleaning. Evaporator coil, blower wheel and housing, condenser coil, drain pan and line. Each one gets cleaned with the right method; no single pressure setting for everything. On Guardsman units we match the coil cleaner to the coil type, because aluminum and copper coils respond to different chemistry.
- 5
Verification. We measure temperature drop again, check airflow at the registers, and confirm the drain line runs clear. You get before-and-after photos of each component, digital and time-stamped.
- 6
Paperwork and guarantee. You get a digital invoice payable by link, plus the 365-Day Done Right Promise in writing. If the cleaning didn’t fix the problem we said it would, we come back at no charge within the year and make it right.
See the difference
Before
After
Before
After
Before
AfterWhat Guardsman HVAC Cleaning Costs in Austin
Here’s what we quote for Guardsman equipment in Austin, based on the work the system actually needs:
- Evaporator coil cleaning only: $140 – $240
- Blower wheel and housing cleaning: $90 – $150
- Condenser coil cleaning (outdoor unit): $120 – $220
- Full HVAC cleaning (evaporator, blower, condenser, drain): $325 – $560
- Coil treatment (anti-microbial after cleaning): $45 – $85
What moves the price is access. A Guardsman furnace in a first-floor closet cleans faster than a horizontal unit in a 130-degree attic. If we find a secondary issue during cleaning, we quote it separately and you approve it before we proceed. No tacked-on charges, no “while we’re here” surprises. Call (940) 283-6595 for a free estimate.
Why Austin Homeowners Call Cardinal Air Duct Austin for Guardsman Work
We built our reputation in Austin on two things: showing up with professional-grade equipment, and explaining what we found before touching a single register. Our techs run Rotobrush contact-vacuum systems and Nikro negative-air machines, not a shop-vac and a prayer. They’re background-checked, uniformed, and you’ll know the tech’s name before they arrive through The Relay Standard booking experience, live trackable arrival window, before-and-after photos, and a digital invoice you can pay from your phone.
Guardsman is what we cut our teeth on in this market, but we also work Lennox, Trane, and Carrier systems daily, which means we see cross-brand failure patterns and know when a Guardsman part is worth the OEM price and when a quality aftermarket replacement makes more sense. Every job is backed by the 365-Day Done Right Promise: if the work isn’t right within a year, we return and correct it at no charge. Omar Haddad leads the crew, and he still insists on inspecting every Guardsman coil photo himself before we close out a job.
FAQs
No. A professional cleaning using manufacturer-recommended methods and chemicals does not void a Guardsman warranty. What voids warranties is neglect, not maintenance. We document every cleaning with photos and a service record you can file with Guardsman if you ever need a warranty claim.
In Austin’s dust and pollen environment, we recommend a full Guardsman HVAC cleaning every three years. Homes with pets, recent construction nearby, or live oaks over the condenser may need it more often. If you’ve never had it cleaned and the system is five years old, it’s due.
Because they’re doing less work. A $99 coil “cleaning” is usually a spray-on foam and a rinse, with no blower removal, no drain line flush, no static pressure check, and no photos. Our price reflects pulling the blower wheel, cleaning it blade by blade, sealing the plenums, and verifying airflow after. You can see the difference in the before-and-after photos every time. Call (940) 283-6595 for a real quote.
Every Cardinal Air Duct Austin job includes time-stamped before-and-after photos of every component we touched: evaporator coil, blower wheel, condenser fins, drain pan. You see exactly what we saw. That’s The Relay Standard, and it’s non-negotiable on every booking.
Yes, we replace capacitors, contactors, drain float switches, and blower motors on Guardsman units, quoting the part separately before we install it. We’ll give you the OEM versus quality aftermarket price on any replacement and you choose. Every repair carries a written guarantee, and if the repair fails, the second visit is free.
If your Guardsman system is blowing weak, smelling stale, or just hasn’t been cleaned since you bought the house, call (940) 283-6595. We’ll send a written price, show up on time, and hand you photo proof the work is done. Clean air isn’t a luxury, it’s just what your system was built to deliver.
Written by Omar Haddad, Owner, Cardinal Air Duct Austin at Cardinal Air Duct Austin, serving Austin and nearby areas.