Fast, Reliable AC Repair & Installation Across Cotati
AC repair in Cotati typically runs $150–$650, and most service calls are completed same-day. Installation for a full cooling system in Cotati’s older tract homes generally falls between $3,500–$7,500, though duct modifications can push that higher. Call (844) 560-6978 for a free estimate.
We’re Crestview Heating & Air California, and we’ve been driving out to Cotati from our San Jose base for years. Owner Marcus Feldman still manages every job as Service Manager, so you’re never handed off to a dispatcher who doesn’t know your neighborhood. We know the 94931 zip well, from the small historic core near the hexagonal downtown plaza to the 1960s and 70s tract homes that stretch toward Highway 116. Cotati’s unique position in the Petaluma Gap wind corridor means your cooling needs aren’t the same as Santa Rosa’s or Petaluma’s, and we account for that in every repair and installation we perform.
Why Crestview Heating & Air California Is Cotati’s Preferred AC Repair & Installation Company
Cotati homeowners call us because we understand what other contractors miss. The 250+ customers who left reviews agree, giving us a 4.8-star average rating, and many of those reviews come from right here in Sonoma County. We’re not a franchise sending whoever’s available; Marcus Feldman answers the phone, schedules the work, and often shows up himself.
Our response time to Cotati is consistent because we know the route. Highway 101 to 116, or cutting across from Rohnert Park, we’re familiar with the access patterns. That matters when your system fails during a summer wildfire smoke event and you need filtration running, not tomorrow.
We’ve spent nearly two decades in HVAC, and that translates to familiarity with virtually every system type, age, and brand a Cotati customer could own. Your system, our specialty. From emergency calls to commercial buildouts, we handle it without the layers of a corporate outfit.
Our AC Repair & Installation Services in Cotati
AC Repair
Cotati’s damp, foggy winters accelerate rust on furnace cabinets and heat exchangers, and that same marine air stresses AC components when systems do run. We repair all makes and models, including Trane, Lennox, Goodman, and Rheem units common in local homes. A typical AC repair in Cotati runs $150–$650 depending on parts and labor. We stock capacitors, contactors, and refrigerant so you’re not waiting on a parts run to Santa Rosa.
AC Installation
This is where Cotati gets complicated. Most homes here were built heating-only, with ducts too small for cooling airflow and returns placed only in hallways. Our AC Repair & Installation team performs full Manual J load calculations and static pressure testing before quoting any system. Installing without these steps leads to frozen coils and uneven temperatures. We’ve seen it. We don’t do it. Installation with proper duct upsizing runs $3,500–$7,500.
AC Replacement
Replacing an existing AC in Cotati often means replacing more than the outdoor condenser. The original system may have been improperly sized for retrofitted ductwork, or the previous installer skipped static pressure testing entirely. We pull permits, perform load calculations, and size your new system correctly. In the Rolling Oaks neighborhood off Highway 116, we replaced an undersized 2-ton unit with a proper 3-ton Carrier system in a 1978 tract home. The original supply ducts were too small for cooling airflow, so we upsized them and added a return in the living room to fix uneven temperatures. The homeowner now enjoys consistent comfort despite the home’s original heating-only design.
Refrigerant Recharge & Leak Detection
Low refrigerant in Cotati systems often traces to corrosion on the indoor coil from years of condensation in that marine air environment. We don’t just top off; we find the leak. Recharge with repair typically falls in the $150–$650 repair range. If your system’s running constantly but not cooling, low charge is a prime suspect.
Duct Sizing & Static Pressure Testing
This is our emphasis on Cotati jobs. Before any new cooling equipment goes in, we test what you’ve got. Undersized ducts create high static pressure, which starves your system of airflow and leads to compressor damage. We measure, calculate, and upsize where needed. It’s extra work upfront. It saves you from a failed system in year three.
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 Cotati
We service nine major HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Cotati customers, that means we don’t turn you away because of what’s on your condenser’s nameplate. We stock common parts for Trane, Lennox, Goodman, and Rheem locally, which keeps turnaround fast. Factory-trained compatibility across all nine brands means accurate diagnostics on the first visit, not a return trip after ordering the wrong component.
Common AC Repair & Installation Problems We See in Cotati Homes
- Ductwork never designed for cooling: Cotati’s 1963–1980s tract homes were built with heating-only ducts. Supply runs are too narrow, returns are hallway-only, and static pressure skyrockets when you force cooling air through. We test before we install.
- Corrosion from marine air: The Petaluma Gap pushes damp, foggy air through Cotati all winter. Furnace cabinets rust, heat exchangers crack from condensation stress, and outdoor AC coils degrade faster than inland. We inspect for this on every service call.
- Improperly sized retrofits: Previous owners or contractors often slapped in the cheapest AC unit without Manual J calculations. Oversized systems short-cycle and fail to dehumidify; undersized ones run constantly and freeze up. Both waste energy and die young.
- Wildfire smoke infiltration: Summer smoke events are increasingly common in Sonoma County. Cotati homes with leaky envelope and basic filtration get hit hard. We install whole-home media filters and fresh-air ventilation with smoke-event override capability.
Pricing for AC Repair & Installation in Cotati, CA
We’re straightforward about numbers because Cotati homeowners deserve to know what they’re facing before we arrive.
| Service | Typical Range in Cotati |
|---|---|
| AC Repair | $150 – $650 |
| AC Installation | $3,500 – $7,500 |
| Furnace Repair | $150 – $700 |
| Tune-Up | $80 – $200 |
What moves you within these ranges? Duct modifications add labor and material. Permit fees vary by job scope. Access matters in Cotati’s tighter lots and older homes with limited attic or crawl space. We quote upfront after inspection, not after work is done. Estimates are free. Call (844) 560-6978 to schedule.
We Also Serve Cities Near Cotati
Our service radius extends throughout southern Sonoma County. We regularly handle AC repair and installation in Rohnert Park, Roseland, Petaluma, and Santa Rosa. Each city has its own housing stock and climate quirks, and we adjust our approach accordingly. Cotati’s Petaluma Gap exposure differs from Santa Rosa’s inland heat, and we size systems differently because of it.
Serving Cotati, CA — Our Local Coverage Area
We’re based in the Cotati 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 — AC Repair & Installation in Cotati
Most Cotati homes built between 1963 and the late 1980s were designed with heating-only ductwork that is too small for cooling airflow, and returns were placed only in hallways rather than in living spaces. Installing AC without upsizing ducts and adding proper returns creates high static pressure, poor airflow, and eventual compressor failure. We perform Manual J load calculations and static pressure testing on every Cotati installation to avoid these problems. Call (844) 560-6978 for a free assessment of your home’s ductwork.
The Petaluma Gap channels cool marine air from San Francisco Bay into Cotati, suppressing summer temperatures compared to inland Sonoma County and making heating the dominant HVAC load. This historically meant AC was rare, so many homes lack proper cooling infrastructure, and the damp, foggy winters accelerate corrosion on furnace cabinets and heat exchangers. Your system faces moisture stress even when it’s not running for cooling. We inspect for rust and condensation damage during every service call in Cotati.
Yes, if you want to maintain indoor air quality during increasingly common summer smoke events in Sonoma County. Standard 1-inch furnace filters capture almost no fine particulate matter from wildfire smoke. We install media filters rated MERV 13 and above, paired with fresh-air ventilation systems that can be set to recirculate mode during smoke events. For Cotati homes with open floor plans near the historic downtown or in older construction with leaky envelopes, this upgrade provides measurable protection. Call (844) 560-6978 to discuss filtration options for your specific home layout.
Yes, and we often recommend it for Cotati homes with original heating-only systems. Replacing both together allows us to design a properly matched system with correctly sized ducts, adequate returns, and a single thermostat strategy that handles both heating and cooling efficiently. The combined project typically falls in the $3,500–$7,500 range for the AC portion plus furnace replacement, with duct modifications quoted separately after testing. We handle permits and Manual J calculations as part of the package.
We service all nine major brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Cotati customers, we commonly see Trane, Lennox, Goodman, and Rheem units, and we stock parts for these brands to minimize wait times. Owner-managed, not outsourced, means Marcus Feldman personally ensures technicians have the right components before heading to your job. Call (844) 560-6978 with your model number for same-day availability.
Ready to get your Cotati home cooled properly? Whether you’re facing a failed compressor in a 1970s tract home or planning your first AC retrofit, we handle the duct calculations, permits, and installation start to finish. From emergency calls to full system replacements, Crestview Heating & Air California brings nearly two decades of HVAC experience to every Cotati job. Call (844) 560-6978 for your free estimate.
Written by Marcus Feldman, Owner at Crestview Heating & Air California, serving Cotati and the San Jose area since 2006.