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.
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Before
AfterFast, Reliable HVAC Cleaning Across Union City
HVAC cleaning in Union City runs $380-$760 for a full system clean in a typical 1,400-2,200 sq ft home, and most jobs are completed in 4-6 hours. The price you’ll pay depends less on square footage and more on whether your evaporator coil, air handler, and blower are included, and whether the crew actually pulls the registers and cameras the runs. We work throughout Union City, from the Decoto-era tract homes west of I-880 to the newer subdivisions east toward Mission Boulevard. Call (806) 606-6902 and we’ll give you a written price before any panel comes off.
We know the difference between a Union City duct problem and what the same-age home in Fremont deals with. The marsh does something specific to this city’s air. More on that below.
Key Takeaways
- A full HVAC clean in Union City (coil, blower, air handler, duct runs) costs $380-$760 depending on system size and condition.
- Tidal-marsh humidity west of I-880 causes visible mold growth in ducts faster than almost anywhere else in the East Bay.
- Fogging or sanitising sprays do not remove mold. Source removal does. We show you the before and after photos to prove it.
- Every CleanRun job includes a written price before work starts and a documented photo record of every duct run after.
Why CleanRun Air Duct Cleaning Is Union City’s Preferred HVAC Cleaning Company
We’re the company Union City homeowners call when they’ve already been burned once: when a $79 coupon turned into a $900 invoice, when a crew ran a shop vac for 40 minutes and called it a clean, when someone fogged the ducts and the musty smell was back by August. CleanRun has done this work since 2013, and every job, everywhere, starts the same way: a written price, delivered before any work begins. That’s Haven Standard Clause 1, and it’s not subject to manager approval.
Tomas Reyes leads our operations. Tomas has spent years training crews to photograph the inside of every duct run, not just the register openings. When our techs finish a job in a Union City home, you don’t take our word for the result. You get a camera record of what the plenum looked like before and after. You see the coil. You see the blower wheel. If it wasn’t cleaned, you’ll see that too.
We serve Union City from the brand’s Bay Area dispatch office, with local crews who know the housing stock here. Background-checked, uniformed technicians arrive with names and faces you can verify. Every job carries the 365-Day Done Right Promise: if the work isn’t right, we make it right, in writing.
BeforeAfterOur HVAC Cleaning Services in Union City
Evaporator Coil Cleaning
The evaporator coil is the coldest, wettest component in your system, and in Union City’s humid air it’s a magnet for biofilm and mold. When the coil is coated, your AC loses capacity and runs longer to hit the same temperature. We open the air handler, camera the coil, and perform full source removal using negative pressure and HEPA filtration. In Union City, this is the single highest-value service on the list. A typical evaporator coil clean here runs $180-$320, and it’s included in our full-system scope.
Air Handler Cleaning
The air handler is where marsh-humid air sits longest. When we clean an air handler in a Decoto-era slab home, we typically find a layer of dust and microbial film on the blower housing, the drain pan, and the interior insulation. That’s what recirculates into your supply registers when the system kicks on. We clean and camera the full unit. Air handler cleaning in Union City runs $150-$280 on its own, or as part of the full HVAC clean.
Blower Cleaning
A dirty blower wheel moves less air. That’s straightforward. But in Union City, the bigger problem is what’s growing on the blower: the wheel spins in moist air, and microbial growth on the squirrel cage gets thrown down the supply ducts into every room. We remove the blower, clean it under negative pressure, and photograph the result. Blower cleaning here typically runs $120-$220.
Condenser Cleaning
Your outdoor condenser sits in the yard, getting coated in pollen, dust, and salt-laced air from the Bay. We clean the condenser coil, straighten bent fins, and check the refrigerant lines. This is more of a maintenance task than a mold issue, but a blocked condenser forces the whole system to work harder and run the evaporator colder, which in turn creates more condensation inside. Condenser cleaning in Union City runs $100-$180.
What happens when you call
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A real person answersNo phone trees - you reach a local pro.
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You get an upfront price rangeHonest numbers before anyone is dispatched.
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A background-checked tech heads outLicensed & insured, dispatched right away.
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You approve before work beginsNothing starts until you say go.
Trusted Brands We Service in Union City
We clean and service all major HVAC brands, but we keep our work honest about the equipment. On Union City jobs we regularly use Rotobrush and Nikro source-removal systems for duct interior access, plus Honeywell filtration and Guardsman treatments where the job calls for a registered antimicrobial. We name these brands because you can look them up before you agree to a price. If a crew shows up with a shop vac and a spray can, they can’t produce what a Rotobrush and a camera produce. No brand name on the van matters if the equipment doesn’t match the invoice.
Common HVAC Cleaning Problems We See in Union City Homes
- Visible mold colonies on the inside of supply and return ducts. West-side homes near Alvarado and the Don Edwards refuge boundaries see this regularly. The marine layer pools in the lowest streets on calm mornings, and ducts stay damp long enough for mold to take hold. It’s not a cleaning every two years problem; it’s a source removal problem.
- Collapsed or disconnected flex duct hidden inside slab foundations. Union City’s 1960s-1980s Decoto-era ranchers often have original flex runs buried in the slab. When those sections collapse or split, the system pulls unconditioned, marsh-humid air directly from the crawlspace, bypassing the filter. Camera inspection finds this. Register cleaning never does.
- Build-up at the first elbow of sheet-metal trunk lines. In the original metal ducts common here, debris compacts at the first bend, often 3-4 inches deep. We’ve documented this in homes off Alvarado Boulevard repeatedly. The register looks fine, the duct is half blocked, and the air coming out of the back-bedroom registers is weak.
- Moldy air handler insulation and blower wheels. Fogging a duct will not fix a colonized blower motor. In Union City’s humidity, the air handler itself is very often the reservoir that recolonizes the ducts within months. We clean it or we don’t promise the smell will go away.
Pricing for HVAC Cleaning in Union City, CA
Here’s what we charge, in writing, for Union City homes:
| Service | Union City Price Range |
|---|---|
| Full HVAC clean (ducts, coil, blower, air handler) | $380-$760 |
| Evaporator coil cleaning | $180-$320 |
| Air handler cleaning | $150-$280 |
| Blower cleaning | $120-$220 |
| Condenser cleaning | $100-$180 |
These are whole-system prices, not per-vent pricing. We don’t bait with a coupon price and switch once the van is in the driveway. The range reflects what the camera shows: a lightly soiled system in a newer Mission Boulevard home sits at the low end. A 50-year-old slab rancher with collapsed flex and a colonized air handler sits at the high end. You get one flat price per system, written out in the quote, before any panel comes off. Haven Standard Clause 1. A free second opinion on any competitor’s written estimate is also available; bring it and we’ll put our number next to it.
We Also Serve Cities Near Union City
CleanRun’s Bay Area crews work throughout the communities around Union City, including Fremont, Newark, San Lorenzo, and Castro Valley. If you’re in one of those cities and dealing with the same fogging-upsell frustration or aged duct issues, call (806) 606-6902 and we’ll cover it with the same written-price policy and photo record.
Serving Union City, CA - Our Local Coverage Area
We’re based in the Union City 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 Union City
Because Union City’s west side sits directly against the tidal marsh, and marsh air isn’t just humid, it pools. Calm mornings push moisture into the lowest-lying blocks near Alvarado and the Don Edwards refuge, where it sits against duct surfaces longer than the same air would a few miles inland in Fremont. Fremont gets breezes off the bay and better air mixing; Union City’s low elevation means that marine layer can linger for hours after sunrise. The result is exactly what our crews document: visible dark mold in duct interiors that doesn’t appear in same-age Fremont homes. For a firm price on what this means for your specific system, call (806) 606-6902.
No. Fogging applies a chemical mist to the duct interior, but it doesn’t remove the source: the colonized insulation, dust, and debris that the mold is feeding on. In Union City’s high-humidity runs, killed spores become food for the next bloom within weeks. A proper fix is source removal: physically extracting the contaminated material under negative pressure, then treating the cleaned surfaces. If you see mold around the supply vents, call (806) 606-6902 and we’ll camera the run before we recommend anything.
At minimum, camera inspection of every trunk line and branch, source removal under negative pressure with HEPA filtration, cleaning or replacement of contaminated duct insulation, cleaning of the evaporator coil and blower wheel, and a written photo record of the before and after. On Decoto-era metal duct systems in Union City, we also check for failed tape seals and disconnected sections at the boots. If the crew you’re talking to doesn’t camera the runs, they’re guessing. Call (806) 606-6902 for a written scope and price.
West-side homes near the marsh generally need HVAC cleaning every 2-3 years, while inland neighborhoods east of Mission Boulevard can often go 4-5 years. The difference is the persistent humidity, which accelerates mold colonization and makes duct debris sticky and harder to extract. If you live in the Alvarado area or near the refuge and you’re smelling musty air every summer, you’re probably overdue. Call (806) 606-6902 and we’ll tell you what a camera inspection shows before we recommend a cleaning schedule.
Yes, if the source is removed. The musty smell in Union City homes near the marsh is typically microbial growth on the evaporator coil, the blower wheel, or the duct insulation. Source removal under negative pressure removes that material, and the smell goes with it. Fogging masks it for a few weeks and then it returns. We clean the air handler and the ducts, then photo-document what came out. For a written price on a full source-removal clean, call (806) 606-6902.
Written by Tomas Reyes, Owner at CleanRun Air Duct Cleaning, serving Union City under the Haven Standard.
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