Fast, Reliable HVAC Cleaning Across Leon Valley
HVAC cleaning in Leon Valley typically runs $280-$650 for a full system service, with most jobs completed in a single visit. We answer calls live 24 hours a day, and our technicians usually reach homes in Leon Valley within 45 minutes to an hour. Call (844) 685-6342 for upfront pricing and a free estimate.
We’ve been working in Leon Valley since the 1980s, back when the 78240 ZIP was still filling in with the last wave of 1970s ranch construction. We know the tight attic clearances, the original fiberglass duct board that’s now turning to powder, and the caliche dust that blows through every seam gap. Our HVAC Cleaning team carries the equipment to handle it: Rotobrush systems for delicate aging ducts, HEPA vacuums for Mountain Cedar pollen loads, and the patience to work in attics that hit 140°F by mid-July. We’re not learning Leon Valley on your job. We’ve already done hundreds of them.
Why Bellows Air Duct & Vent Co. Is Leon Valley’s Preferred HVAC Cleaning Company
Ray Castillo founded Bellows Air Duct & Vent Co. in 1984, and we’ve built our reputation in Bexar County on one principle: the job is done right, or we come back and make it right. No paperwork, no arguing. That 90-Day Done Right Promise is stamped on every invoice we write in Leon Valley.
Our technicians are background-checked, uniformed, and trained specifically on the failure modes of 1960s-1970s tract housing. They know what delaminated duct board looks like, they know where the return-air chases pinch down too small, and they know that a homeowner on Cielo Grande Drive or Timber Path doesn’t want a lecture - they want the problem fixed and the house left clean.
Calls are answered by a live person, 24/7. Not a voicemail tree, not an app. When your AC smells like hot fiberglass or your allergies won’t quit after cedar season, you talk to someone who can dispatch a truck.
We show one honest price before we start. The number on the phone is the number on the invoice. No bait coupons, no upsell at the door. That’s been our practice for 42 years, and it’s why Leon Valley homeowners call us back when their neighbors need help.
Our HVAC Cleaning Services in Leon Valley
Evaporator Coil Cleaning
The evaporator coil in your air handler is where Leon Valley’s humidity problem becomes a mold and dust problem. With AC running 8-9 months a year, that coil stays wet for long stretches, and the biofilm buildup restricts airflow until your system runs longer, costs more, and still can’t keep up with August afternoons. We pull the coil, clean it with foaming agents that won’t corrode aluminum, and verify the drain pan and line are clear. In older Leon Valley systems with limited attic access, we use compact Nikro equipment that fits where full-size machines won’t.
Air Handler Cleaning
Your air handler is the heart of the system, and in Leon Valley’s 1960s-70s homes it’s often sitting in a closet or garage that’s never been properly sealed against caliche dust and pollen infiltration. We disassemble the blower assembly, clean the housing, treat the cabinet for mold and mildew, and inspect the heat exchanger for corrosion. Many handlers we see on the west side of Leon Valley near Evers Road are original to the house, still running but starved for airflow by decades of neglect. A clean handler runs cooler, lasts longer, and doesn’t blow that musty smell every time the fan kicks on.
Coil Treatment
After cleaning, we apply a non-toxic coil treatment that inhibits mold regrowth and improves heat transfer. In Leon Valley’s climate, where the coil goes back to work immediately in high humidity, this treatment extends the clean by 12-18 months. We use Aprilaire- and Honeywell-compatible treatments that won’t void manufacturer warranties. For homes with allergy-sensitive residents, we also offer full-system sanitizing with EPA-registered products.
Blower Cleaning
The blower wheel moves every cubic foot of air in your home, and when it’s caked with dust, it can’t move enough. We remove the blower assembly, clean each blade, balance the wheel, and check the motor amp draw. In Leon Valley’s older systems, we often find blowers that have never been removed in 40+ years of operation. The difference in airflow after cleaning is immediate and measurable.
Condenser Cleaning
Your outdoor condenser coil is exposed to everything: cottonwood fluff in spring, caliche dust year-round, grass clippings from weekly mowing. We wash the fins with low-pressure foaming cleaner, straighten bent fins, and check refrigerant levels. A clean condenser in Leon Valley’s heat can drop your electric bill and reduce the strain on a compressor that’s already working overtime.
Heat Exchanger Cleaning
For gas furnaces, the heat exchanger must be inspected and cleaned to prevent carbon monoxide risks and ensure efficient combustion. We camera-inspect the exchanger for cracks or corrosion, clean the burners, and verify proper flame pattern. This is safety-critical work, and we document it with photos for your records.
What happens when you call
- 1
A real person answersNo phone trees - you reach a local pro.
- 2
You get an upfront price rangeHonest numbers before anyone is dispatched.
- 3
A background-checked tech heads outLicensed & insured, dispatched right away.
- 4
You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Leon Valley
We carry professional-grade equipment from Nikro, Honeywell, and Aprilaire, the same brands serious HVAC contractors specify for their own jobs. For Leon Valley homeowners, this means we don’t need to order parts or schedule return visits for equipment we don’t have. Our trucks stock Rotobrush systems, HEPA vacuums, coil treatments, and sealing materials for the specific duct types found in local 1960s-1980s construction. Most jobs are completed in a single visit, start to finish.
Common HVAC Cleaning Problems We See in Leon Valley Homes
- Delaminated fiberglass duct board. The original duct board in Leon Valley’s 1960s-70s homes was never designed for 50+ years of 140°F attic cycling. The fiberglass facing separates from the core, and the blower starts pushing visible particles into living spaces. We replace or reline these sections with modern materials.
- Undersized return-air chases pulling attic air. This is a Leon Valley signature problem. The chase is too small for the system, creating negative pressure that sucks unconditioned attic air through every seam gap. That air carries degraded insulation, caliche dust, and rodent debris. We seal the chases and often enlarge the return path.
- Mountain Cedar pollen deposits recirculating for months. The December-February cedar season in Bexar County produces some of the highest pollen counts in North America. Without HEPA-level extraction, that pollen stays in ductwork and recirculates every time the fan runs, long after the trees have stopped shedding.
- Evaporator coils choked with biofilm from constant humidity. Leon Valley’s extended cooling season means the coil rarely dries completely. The resulting biofilm restricts airflow, raises humidity indoors, and provides a growth medium for mold and bacteria.
Pricing for HVAC Cleaning in Leon Valley, TX
| Service | Typical Range in Leon Valley |
|---|---|
| Evaporator Coil Cleaning | $180-$340 |
| Blower Cleaning | $150-$280 |
| Condenser Cleaning | $120-$220 |
| Air Handler Cleaning (full) | $280-$480 |
| Coil Treatment | $80-$140 |
| Complete HVAC System Cleaning | $450-$850 |
What moves you within these ranges? The age and accessibility of your system, the condition of the ductwork, and whether we’re addressing a single component or the full assembly. A 1972 ranch on Timber Path with original duct board and a cramped attic takes longer than a 1985 home with flex duct and a walk-in utility closet. We inspect with a camera before we quote, so you see what we see and the price is fixed before we start. No changes at the door.
We also honor our standing offers: $50 off any repair over $250, a free second opinion on any written estimate, and a permanent 5% senior and veteran discount. Our $89 Seasonal Tune-Up is available year-round for Leon Valley homeowners who want to stay ahead of problems.
Call (844) 685-6342 for your free estimate. We’ll be there when we say.
We Also Serve Cities Near Leon Valley
Our service area extends throughout northwest Bexar County and beyond. We regularly dispatch to Leon Valley and surrounding communities including Lackland Air Force Base, San Antonio, Live Oak, and Timberwood Park. Same live-answer dispatch, same upfront pricing, same 90-Day Done Right Promise.
Serving Leon Valley, TX - Our Local Coverage Area
We’re based in the Leon Valley 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 - HVAC Cleaning in Leon Valley
They fail faster because Leon Valley’s attic temperatures regularly exceed 140°F, and the 1960s-1970s fiberglass duct board was never engineered for 50+ years of that heat cycling. The adhesive between the fiberglass core and the foil facing breaks down, the board delaminates, and the blower starts pushing fiberglass particles into your home. We see this failure mode almost exclusively in Leon Valley’s original ranch-era housing stock, not in newer flex-duct construction. Call (844) 685-6342 if you’re noticing white dust or a chemical smell from your vents.
Yes, significantly, if it’s done with HEPA-level extraction. The December-February Mountain Cedar season produces pollen counts among the highest recorded anywhere in North America, and that pollen loads into ductwork where standard filters can’t reach it. Without proper cleaning, it recirculates for months after the season ends. We use sealed HEPA vacuums and rotary brush systems to extract pollen from the full duct run, not just the reachable sections. For allergy-sensitive households, we recommend cleaning in March, after cedar season peaks. Call (844) 685-6342 to schedule - estimates are free.
It’s a design flaw common to 1960s-1970s Bexar County tract construction: the return-air chase is too small for the system’s airflow requirements, creating negative pressure that pulls unconditioned attic air through every seam gap and joint. That attic air carries degraded fiberglass insulation, caliche dust, and in some cases rodent debris, all of which gets distributed through your supply ducts. We serviced a 1970s ranch home on Cielo Grande Drive where the original fiberglass duct board had delaminated under extreme attic heat. Using a Rotobrush system, we removed 50 years of caliche dust and Mountain Cedar pollen from the supply ducts and sealed five significant gaps in the return chase to stop the negative-pressure attic infiltration. The fix is cleaning plus sealing, and sometimes enlarging the return path. Call (844) 685-6342 for an inspection.
Every 3-5 years for a typical home, and every 2-3 years if you run the system through cedar season, have pets, or live in one of the original 1960s-70s ranch homes with aging duct board. The combination of 8-9 months of annual AC use, extreme attic heat, and the heaviest Mountain Cedar pollen in the country means Leon Valley systems accumulate debris faster than systems in milder or drier climates. We also recommend coil treatment after each cleaning to slow regrowth in the humidity. Call (844) 685-6342 and we’ll put you on a maintenance schedule that makes sense for your house.
Yes. Our HVAC Cleaning service covers evaporator coils, blower assemblies, air handlers, condensers, and heat exchangers, not just the duct runs. In Leon Valley, the components often need more attention than the ducts themselves, especially the evaporator coil and blower in systems that have never been opened. Every job includes camera inspection before and after, so you see the condition of each component and the results of the cleaning. Call (844) 685-6342 for a full-system estimate - we’ll show you exactly what your system needs before we start.
Ready to get your Leon Valley home’s HVAC system cleaned right? Call (844) 685-6342 now for a free estimate with upfront pricing. We’ll be there when we say, and we stand behind it for 90 days - no paperwork, no arguing.
Written by Ray Castillo, Owner at Bellows Air Duct & Vent Co., serving Leon Valley since 1984.