HVAC Cleaning in Mission District - Flat Price Per System, No Per-Vent Upsells

Fast, Reliable HVAC Cleaning Across Mission District

HVAC cleaning in Mission District typically runs $280-$680 for a complete system service, and most jobs are finished in a single visit. Our HVAC Cleaning team has worked the Victorians along Valencia Street, the Edwardian flats off 24th, and the mixed-use buildings near Mission Street for over 42 years. We know the 94110 zip by its crawl spaces, not just its restaurants. If your vents smell musty, your airflow’s dropped, or your energy bills have climbed without explanation, call (844) 685-6342. We’ll answer live, give you an upfront price, and show up when we say.

Call (844) 685-6342

Why Bellows Air Duct & Vent Co. Is Mission District’s Preferred HVAC Cleaning Company

We’ve been driving our vans to Mission District since 2012, long before the tech boom painted over the neighborhood’s walls. Ray Castillo built this company on the idea that a tradesman should say what he’ll do, do it, and stand behind it without making the homeowner fill out forms. That still holds.

Our technicians are background-checked and uniformed, and they carry camera inspection gear on every job. Before we touch a tool, we show you what’s inside your ducts. After we finish, we show you again. The 90-Day Done Right Promise covers every Mission District job in writing: if something’s not right, we return at no charge, no paperwork, no arguing.

Calls come through to a live person 24 hours a day. Not an app. Not a callback queue. A real voice at our office. Most Mission District calls reach us within two rings.

We know the local buildings. The fir-floor cavities. The crawl spaces beneath Bartlett Street that haven’t been opened since the Carter administration. That knowledge changes how we clean, what we find, and how thoroughly we finish.

Our HVAC Cleaning Services in Mission District

Evaporator Coil Cleaning

The evaporator coil in your Mission District flat sits in a dark, humid chamber, and the marine moisture that rolls through our fog-sheltered valley between Twin Peaks and Bernal Heights settles on it nightly. A dirty coil can’t transfer heat efficiently. Your system runs longer, costs more, and still leaves rooms unevenly cooled. We remove the coil, clean it with foaming agent and low-pressure rinse, and treat it with Aprilaire antimicrobial protectant. In Mission District’s older buildings, we often find coils caked with a gray paste of dust, drywall residue from decades of renovations, and biological growth from condensation that newer, drier cities simply don’t produce.

Coil Treatment

Cleaning without protection is half a job in this climate. Our coil treatment applies a bonded antimicrobial barrier that resists mold regrowth through the shoulder seasons when marine moisture penetrates deepest. For Mission District homes with retrofitted ductwork running through unconditioned wall chases, this treatment is the difference between a coil that stays clean and one that fouls again within a season. We include it with every evaporator coil service, and we’ll show you the before-and-after on camera.

Air Handler Cleaning

The air handler is the heart of your forced-air system, and in Mission District’s Victorian flats, it often lives in a cramped closet or basement that was never designed for it. We disassemble the blower assembly, clean the housing, treat the drain pan, and inspect the heat exchanger for corrosion or blockage. On Bartlett Street, we opened a supply register in a 1906 Edwardian and pulled out a rat carcass, nesting material, and a century of construction debris from a crawlspace duct that had never been serviced. Using our Rotobrush and HEPA vacuum, we cleared the dead zone, applied Aprilaire antimicrobial coil treatment, and sealed the joint where rodents entered. That kind of find isn’t rare here. It’s expected.

Blower Cleaning

A blower wheel coated in dust loses balance and efficiency. It draws more amperage, makes more noise, and moves less air. In Mission District’s older buildings, where duct systems were awkwardly retrofitted through fir-floor cavities and interior wall chases never designed for airflow, the blower works harder to push air through tortured runs. We remove the wheel, clean each vane, balance the assembly, and reinstall it with fresh seals. The difference in airflow is immediate, and you’ll see it on our manometer before we leave.

Condenser Cleaning

Your outdoor condenser faces Mission Street traffic film, pollen from the neighborhood’s mature trees, and the salt-laden fog that drifts in from the bay. We wash the coils, straighten fins, check refrigerant levels, and clear the condensate drain. A clean condenser runs cooler, lasts longer, and doesn’t strain your compressor on the warm afternoons when the Mission District’s sun-trapping valley turns ten degrees hotter than the Sunset.

Trusted Brands We Service in Mission District

We clean and service equipment from every major manufacturer, and we stock common parts for fast turnaround on Mission District calls. Our cleaning systems include Rotobrush mechanical brushes for agitating debris in rigid duct runs, Nikro HEPA vacuums for containing what we remove, and Abatement Technologies portable containment when we’re working in occupied multi-unit flats where cross-contamination between units is a concern. For coil treatment and air quality solutions, we specify Aprilaire products, the same brand serious HVAC contractors install in new construction. We don’t show up with shop vacs and guesswork. The equipment matters, and we bring what the job demands.

Common HVAC Cleaning Problems We See in Mission District Homes

• Duct dead zones from retrofitted floor cavities trap debris and moisture, breeding mold in the fog-sheltered climate. The Victorians along Valencia and 24th weren’t built for forced air. Ducts threaded through fir-floor joist bays create sharp turns and low-velocity pockets where dust, skin cells, and moisture accumulate for decades. Standard cleaning misses these dead zones. We camera-locate them and use targeted mechanical agitation to break them loose.
• Unsealed subfloor duct joints in 100-year-old crawl spaces allow rodent intrusion, leaving droppings and carcasses. The Mission District’s dense urban rodent population exploits every gap at the subfloor level. Our technicians routinely find nesting material, droppings, and remains in ducts that haven’t been disturbed in 40-plus years. We remove the contamination, sanitize the run, and seal the entry points with mastic and mesh.
• Gentrification-era renovation drywall dust settles deep in rigid duct runs, bypassing standard filter changes. Every gut renovation on the block loads the shared duct systems with fine particulate that filters cannot catch. The dust cakes onto coils and blower wheels, reducing efficiency and circulating irritants. We see this in nearly every pre-1915 flat that’s had work done in the last twenty years.
• Interior condensation in poorly sealed retrofitted ducts promotes microbial growth unique to this microclimate. The Mission’s combination of daytime warmth and nighttime marine moisture creates temperature differentials across uninsulated duct surfaces. Where drier inland cities see dust, we see active biological colonies. Our cleaning protocol includes antimicrobial treatment specifically for this failure mode.

Air Duct Cleaning in Mission District, Built on the K.E.Y.S. Code

The Bay Area’s mix of salt air, redwood pollen, and decades-old ranchers with original ductwork means your system works harder than it should. We inspect with a camera before we touch a thing, clean to the collar, and show you after. Dryer vents get cleared to code, because lint fires are real and preventable. One honest price, no surprises on the bill. we coordinate through our San Francisco Bay Area service area

We stand behind it with the Keystone Standard: 90 days, in writing, no arguing. Named for the oldest air-moving tool there is. Clean air, the old craft way.

Pricing for HVAC Cleaning in Mission District, CA

We Also Serve Cities Near Mission District

Our vans run daily to Mission District and the surrounding neighborhoods: Noe Valley to the southwest, where the hills change the airflow patterns entirely; San Francisco proper, from the dense blocks of Chinatown to the fog-line homes near the Presidio; and Daly City to the south, where the marine layer sits even heavier. Same crew, same equipment, same upfront pricing. Wherever you are in the 94110 or nearby, we’re the local team that knows old buildings.

FAQs - HVAC Cleaning in Mission District