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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AfterCarrier Air Duct Cleaning in San Francisco, CA | Morton’s Air Duct Cleaning
We clean Carrier ductwork across San Francisco, and the work here has one consistent thread: almost none of it was built as designed. A Carrier Infinity air handler shoved into a 1910 Edwardian row house behaves differently than the same unit in a 1990s suburb. The retrofit duct runs, the coastal fog, the decades of floor-furnace conversions all change what a proper cleaning needs to be. If you own a Carrier system in San Francisco, call us at (323) 918-4345 and we’ll explain exactly what we’d do before we touch anything.
Why San Francisco Residents Choose Us for Carrier Service
We have worked on Carrier systems for over 15 years, from WeatherMaker 9200 furnaces to the current Infinity and Performance lines. Paul Adeyemi, our owner, learned ventilation mechanics at Los Angeles Trade-Technical College and has spent the better part of two decades inside walls and crawl spaces. He trains every tech to approach a San Francisco job differently: we expect sharp flex-duct bends, we expect damp returns, and we expect to find things the last crew missed. We are an independent Carrier sales & service provider, not a manufacturer affiliate, which means we answer to you, not a corporate scorecard. That independence is why we can be honest when a repair is smarter than a replacement, and why we never pad a job with services your system doesn’t need. When we work in San Francisco, we protect your floors with shoe covers and drop cloths, and we give you a written price before any work starts. Every time.
Common Carrier Air Duct Cleaning Problems We Solve in San Francisco
- Musty evaporator coils in rarely used Carrier AC systems. San Francisco’s fog keeps indoor humidity high even when temperatures stay in the 60s. Carrier coils that sit idle for months grow biofilm and mildew, and the odor circulates the moment the fan kicks on. We treat coils, not just ducts.
- Undersized retrofit flex duct choking Carrier air handlers. Victorian and Edwardian framing was never built for central air. When a Carrier Performance air handler gets connected through a sharp 90-degree flex bend, static pressure climbs, blower motors strain, and dust packs into the turbulence points. We find and clear these.
- Failing mastic and disconnected joints in mid-century Carrier metal ducts. Behind old floor-furnace grates in neighborhoods like the Inner Sunset, original duct sections pull apart, sucking fog-borne grit and remodel dust into the airstream. We reseal what we can and tell you honestly what needs a sheet metal repair instead.
- Compacted pet dander and construction dust in floor-furnace stub ducts. Homes near Cole Valley and the Haight that converted from gas floor units decades ago still have short stub runs feeding the new Carrier system. Those grilles collect years of everything. Our video inspection shows you before and after.
- Cracked heat exchangers in older Carrier 80% furnaces. Clogged, high-static retrofit ducts reduce airflow enough to overheat a heat exchanger. Duct cleaning alone cannot fix a crack, and we will tell you plainly if yours has one and what that means for safety.
Carrier Service in San Francisco: What Local Conditions Mean for Your Equipment
Here is the nuance that generic Carrier pages miss. In San Francisco’s Richmond and Sunset districts, the fog that lingers for weeks at a time doesn’t just sit outside. It moves through poorly sealed return ducts into Carrier air handler cabinets, where it meets the dust the system has been pulling from a century-old house. That combination, cool and damp and dark, is exactly what mold needs. A standard Air Duct Cleaning - San Francisco service that runs a brush through the supply and return registers will never open the air handler cabinet. It will never touch the evaporator coil. It will never see the mold growing on the blower housing. That’s why we inspect and treat the cabinet and the coil as part of every San Francisco Carrier job. In a stucco home near 19th Avenue where fog sits all day, the coil is where the problem starts. Skip it and the musty smell comes back in three weeks no matter how much you paid for the ductwork. We would rather do the whole job once, correctly, than sell you a cheaper clean that doesn’t fix the thing you called about. The persistent fog in the Outer Sunset means Carrier owners there need coil treatment more urgently than someone in Noe Valley, even though both own the same Infinity model.
Carrier Models & Products We Service in San Francisco
We service the full Carrier residential line in San Francisco. That includes the Infinity series (59MN7 furnaces, 24ANB7 air conditioners), the Performance series (59TP6, 24ACC6), the Comfort series (58STA, 24ABB3), and the legacy WeatherMaker 9200 and 9300 furnaces still running in thousands of the city’s older homes. For critical components like blower motors and control boards, we use OEM Carrier parts when they’re available, because a mismatched board on an Infinity communicating system causes more problems than it solves. For common wear items like gaskets and flex duct connectors, we use high-quality aftermarket equivalents that do the job without the factory markup. We stock common Carrier filters and coil-treatment products locally so a San Francisco visit doesn’t stall waiting on a shipment. Before we start, let me show you exactly what we found and exactly what it will cost to fix it.
Carrier Service Pricing in San Francisco
Full-system Carrier duct cleaning in San Francisco typically runs between $450 and $850 depending on the size of the home, the number of returns, and how much of the ductwork is original retrofit versus modern replacement. A video inspection add-on is usually $99 to $149. Coil treatment, when our inspection shows it’s needed, adds roughly $150 to $250. A free estimate from us means a real number written down before work begins: you will not get a call later with a surprise line item. Paul Adeyemi insists on that. Call (323) 918-4345 and we’ll walk through what your specific Carrier setup in San Francisco is likely to cost.
Serving San Francisco, CA - Our Local Coverage Area
We’re based in the San Francisco 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 - Carrier Air Duct Cleaning in San Francisco
In almost every San Francisco Victorian we inspect, the smell comes from mildew on the evaporator coil or inside the air handler cabinet, not from the ducts themselves. The city’s fog keeps indoor humidity high year-round, and a rarely used Carrier Infinity coil becomes a damp surface for biofilm growth. The odor circulates whenever the blower fan runs, even with the cooling off. The fix is a coil treatment plus a full system cleaning, not just a duct brushing. Call (323) 918-4345 and we’ll confirm what’s actually growing before quoting a price.
Yes. We clean retrofit stub ducts behind floor-furnace grates regularly in San Francisco’s Edwardian row houses as part of our Dryer Vent Cleaning in San Francisco and full-system services. These short runs collect pet dander, fog-borne particulate, and construction dust from the city’s near-constant remodeling. The access is tight and the bends are sharp, so we use video inspection to see what’s inside before and after cleaning. If the grates are original to the home, we clean them carefully rather than forcing them out and risking damage to century-old woodwork.
We recommend every 3 to 4 years for Carrier systems in the Outer Sunset and Richmond, where sustained fog and damp indoor air accelerate dust compaction and mold growth inside retrofit ducts and air handler cabinets. That’s more frequent than the national every-5-to-7-years guidance, because San Francisco’s coastal humidity changes the risk profile. If we find significant coil growth during a visit, we’ll note it and recommend whether a shorter interval makes sense for your specific home. Estimates are free: (323) 918-4345.
The heat exchanger itself doesn’t need cleaning during a duct service, but it should be inspected. In San Francisco, older Carrier 80% furnaces connected to clogged retrofit ducts can overheat, and a cracked heat exchanger is a carbon monoxide risk. We check for visible cracking and rust during every full-system cleaning we do in the city. If we see something concerning, we’ll show you the photo and explain your repair options honestly, including whether replacement is safer and more cost-effective.
It depends on what’s causing the imbalance. If compacted debris is restricting one branch of the retrofit ductwork, cleaning often restores more even airflow. But many Richmond district stucco homes from the 1920s to 1940s have ducts that were undersized or sharply bent when they were added, and no amount of cleaning corrects a design flaw. Our video inspection shows which situation you have before we recommend anything. Call (323) 918-4345 for a free assessment.
Service Areas Near San Francisco
Alongside our San Francisco work, we serve communities across the Bay Area. You’ll find us in the San Francisco service area daily, and we take calls from homeowners further out as well. For folks looking for Carrier service in Seattle, the climate issues are different. And if you’re comparing notes with someone in Carrier service in Nashville-Davidson, the humidity there creates its own set of coil problems.
Book Your Carrier Service in San Francisco Today
We are taking calls for Carrier duct cleaning across San Francisco this week. Tell us what you’re noticing and we’ll give you a straight answer and a written price. Call (323) 918-4345 to schedule a free estimate.
Written by Paul Adeyemi, Owner at Morton’s Air Duct Cleaning, serving San Francisco since 2005.