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.
Aprilaire Coil Cleaning: The Round Rock Owner’s Guide
CleanRun stocks and installs Aprilaire-compatible evaporator and condenser coil cleaning for Round Rock homeowners, with typical whole-system service running $340-$580 depending on system size and accessibility. Most Aprilaire-integrated HVAC systems in Round Rock can be serviced same-week, and we carry the full line of Aprilaire-approved cleaning agents and tools on every truck. The camera goes in first. Then we talk.
Most Round Rock owners don’t think about their Aprilaire coil until the upstairs never cools below 78 degrees in July, or the energy bill jumps $80 without explanation. In neighborhoods like Teravista and Stone Oak Ranch, where cedar pollen loads are heavy from February through May, we’ve pulled coils caked with a quarter-inch of biofilm that the homeowner never saw coming.
Which Aprilaire Models This Applies To
Aprilaire builds coil-compatible components across three main series that interface with your HVAC system’s evaporator or condenser coil: the 5000 Series electronic air cleaners (models 5000, 5010, 5018), the 1000 Series media cleaners (models 1410, 1610, 2410, 2416, 3410, 4400, 4406), and the 800 Series steam humidifiers (models 800, 865) whose steam distribution tubes terminate near the coil plenum. The critical detail is whether your Aprilaire unit is mounted upstream or downstream of the coil, because that determines how debris migrates and what cleaning approach protects the Aprilaire components.
To identify your unit, check the label on the access door or the side of the cabinet. Aprilaire stamps a four-digit model number and a two-letter manufacturing date code. For coil cleaning purposes, we also measure the plenum opening, the coil’s fin density (fins per inch), and whether you have a slab coil or an A-coil configuration. Slab coils common in 2015-2020 Round Rock builds (Teravista, Paloma Lake, Forest Creek) run 18-25 fins per inch and need a lower-pressure cleaning protocol than the 8-12 fins per inch found on older A-coil systems.
CleanRun is an independent service provider, not affiliated with Aprilaire. We use Aprilaire-recommended cleaning agents where the manufacturer specifies them, and quality aftermarket foaming cleaners where the application allows. The difference matters for warranty coverage on newer Aprilaire units still under manufacturer protection.
Signs Your Aprilaire Coil Cleaning Is Failing

- Uneven cooling between floors. The upstairs runs 6-10 degrees warmer than downstairs because restricted airflow across a dirty coil can’t move enough conditioned air through the duct run, the metal pathway that carries air to each room. In Round Rock’s two-story homes built after 2015, we see this pattern most often in systems that haven’t had coil service since installation.
- Ice formation on refrigerant lines. When the evaporator coil can’t absorb heat due to debris buildup, the refrigerant temperature drops below freezing and frost accumulates on the suction line. Left unchecked, this can flood the compressor with liquid refrigerant, an $1,800-$2,400 repair that coil cleaning would have prevented.
- Musty or sour odor from registers. The register is the vent cover where air enters your room. Biofilm on the coil breeds bacteria that release volatile compounds, especially in Round Rock’s humid months when the coil stays wet between cycles. Aprilaire’s 5000 Series air cleaner can’t compensate for a coil that’s become a petri dish.
- Short cycling, the compressor turning on and off every 5-8 minutes. A dirty coil triggers high head pressure; the system’s safety controls shut it down before damage occurs. The compressor works harder, starts more often, and fails years early. We’ve replaced compressors in 7-year-old systems that should have lasted 15.
- Energy bills climbing 15-30% year-over-year with no rate change. The Department of Energy publishes that a dirty coil can reduce efficiency by 30%. In Round Rock’s 100-degree August stretches, that translates to real dollars, and it’s the first thing we check when a homeowner brings us a year’s worth of bills.
Before
AfterReplacement Cost & What’s Included
Coil cleaning is not a parts replacement, it’s a service, and our pricing reflects the actual scope of work under Haven Standard Clause 1: Written Price Before Any Work Starts.
| System Size / Configuration | Price Range | What’s Included |
|---|---|---|
| Single-zone, slab coil, accessible attic | $340-$420 | Full coil foaming, rinse, drain pan treatment, before/after photo record |
| Single-zone, A-coil or restricted access | $420-$520 | Above plus panel removal, fin straightening as needed, plenum inspection |
| Multi-zone or dual-coil system | $520-$580 | Above applied to each coil, full system airflow verification, documented photo record of every duct run |
What drives the range: attic temperature (130-degree August attics extend labor time), fin damage requiring straightening, and whether the Aprilaire unit must be removed and reinstalled to access the coil face. We quote the exact price after camera inspection, before any chemical touches metal. Every job includes our Documented Photo Record, delivered as a standard deliverable, and is backed by the 365-Day Done Right Promise in writing.
DIY or Call Us?

There’s a safe middle ground and a hard stopping point. A homeowner can check the Aprilaire filter, verify the condensate drain isn’t clogged, and confirm the outdoor condenser isn’t blocked by vegetation. These are visual checks, no tools required.
What crosses into professional territory: anything involving refrigerant lines, high-voltage electrical connections inside the air handler, or foaming chemicals on the coil itself. The evaporator coil sits in a plenum, the sheet-metal box just above your furnace, often with live 240V terminals inches away. Refrigerant lines operate under 200-400 PSI pressure; a puncture releases gas that can cause frostbite and displaces oxygen in enclosed attics. We’ve seen DIY coil cleaning bend fins irreversibly or push debris deeper into the coil core, converting a $400 service into a $2,100 coil replacement.
Our crew carries Aprilaire-compatible cleaning agents, fin combs, and negative-pressure extraction equipment on every truck. Call (737) 259-5752 and we’ll run the camera through your main trunk line before quoting a single dollar figure.
FAQs
In Round Rock’s climate, with cedar pollen February through May and dust from Hill Country limestone soils, we recommend coil cleaning every 3-4 years for homes with standard 1-inch filters changed quarterly. Homes with Aprilaire media filters upgraded to MERV 13 can stretch to 5 years. Call (737) 259-5752 and we’ll inspect yours at no charge to tell you where you stand.
No. Once debris has bonded to the aluminum fins or corrosion has set in, physical removal is the only fix. Corrosion pitting from Round Rock’s hard water, calcium content 180-220 PPM in most municipal supplies, can’t be reversed. We document the condition with photos and quote replacement only when cleaning won’t restore performance.
Most residential Aprilaire coil cleanings take 2.5-4 hours from truck arrival to final airflow check. A-coil configurations add 45 minutes for access panel work. We don’t schedule more than two coil jobs per crew per day, so the work isn’t rushed.
We carry Aprilaire-compatible filters, media replacements, and humidifier pads on every truck. For control boards, motors, or refrigerant components, we source same-day from regional distributors in Austin. We also stock Lennox, Trane, and Carrier parts for mixed-system homes common in Round Rock’s 2015-2022 construction.
Written by Tomas Reyes, Owner, CleanRun Air Duct Cleaning Round Rock at CleanRun Air Duct Cleaning Round Rock, serving Round Rock and nearby areas.




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