Fast, Reliable AC Repair & Installation Across San Ramon
AC repair in San Ramon typically runs $150–$650, while a full installation or replacement costs $3,500–$7,500. Most repairs are completed same-day, and our crew is familiar with the specific HVAC headaches that come with San Ramon’s inland heat and its concentration of 1990s–2010s production homes.
We’re Crestview Heating & Air California, and we’ve been serving San Ramon homeowners long enough to know the difference between a coastal East Bay cooling problem and a genuine San Ramon heat emergency. When your attic-mounted air handler is baking in 140°F temperatures and your upstairs bedrooms won’t drop below 85°F, you need someone who understands why that’s happening, not just someone with a refrigerant gauge. Our AC Repair & Installation team covers both ZIP codes, 94582 and 94583, from Dougherty Valley to Twin Creeks to the older homes near Crow Canyon Road. If your system is down, call us at (844) 560-6978 for a free estimate.
Why Crestview Heating & Air California Is San Ramon’s Preferred AC Repair & Installation Company
We’ve earned a 4.8-star average across 250+ customer reviews, and a growing share of those come from San Ramon homeowners who found us after frustrating experiences with dispatch-heavy outfits. Marcus Feldman, our owner, still serves as Service Manager, which means the person answering your questions about compressor failure or duct sizing is the same person accountable for the fix.
That matters in San Ramon specifically because this city’s HVAC problems aren’t generic. The mass development of Dougherty Valley between 2000 and 2010 created thousands of nearly identical homes with identical builder-grade 3-ton split systems, all aging out at the same time. We’ve replaced enough of them to recognize the floor plans, the original equipment models, and the duct shortcuts before we even pull into the driveway. Our response time to San Ramon is built into our routing, we don’t make you wait three days while a coastal technician figures out why inland heat matters.
Nearly two decades of HVAC experience means we’ve worked on virtually every system type, age, and brand a San Ramon customer could own. Your system, our specialty. Owner-managed, not outsourced.
Our AC Repair & Installation Services in San Ramon
AC Repair
San Ramon’s inland heat pocket, cut off from marine-layer cooling by the coastal range, pushes temperatures to 95–105°F while Dublin and Danville stay milder. That stress cracks capacitors, seizes compressors, and turns minor refrigerant leaks into total failures fast. We repair all major brands, including Trane, Lennox, Goodman, and Rheem, and we carry common parts so your San Ramon home isn’t sweating through a second night. Most repairs fall between $150–$650.
AC Installation
If you’re in Dougherty Valley or Twin Creeks and still running the original builder-grade unit, you’re in the 15–25 year replacement window where efficiency has dropped and repair costs are climbing. We recently serviced a home on Morning Tide Court in Dougherty Valley where the original builder-grade 3-ton Goodman AC unit finally gave out, compressor seized mid-July with attic temps over 130°F. Our crew replaced it with a 16 SEER Carrier and upsized the return duct, cutting upstairs bedroom temps from 85°F to 74°F. The owner’s next-door neighbor, same floor plan, called us two weeks later for the identical replacement. That’s the pattern we see across San Ramon cul-de-sacs. Installation runs $3,500–$7,500 depending on size, SEER rating, and whether duct modifications are needed.
AC Replacement
Replacement isn’t just swapping boxes. In San Ramon’s 2000s tract homes, the original ductwork was often sized for the bare minimum, and attic-mounted air handlers sit in spaces that exceed 140°F. We assess whether your replacement needs upsized returns, sealed ductwork, or radiant barrier installation to actually solve the comfort problem, not just replace the broken machine. For San Ramon homeowners hitting that simultaneous replacement wave in Dougherty Valley, we offer free estimates that include load calculations and duct evaluation.
Refrigerant Recharge
Low refrigerant in San Ramon usually means a leak, not normal consumption. The thermal cycling between cold valley-floor mornings and extreme dry heat stresses copper lines, especially in superheated attics where linesets degrade faster. We don’t just top off, we leak-test, repair the source, and recharge with the correct refrigerant type for your system. Recharge with leak repair typically runs $150–$650.
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 San Ramon
We service nine major HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For San Ramon customers, that means we don’t turn you away because of your equipment label. We stock common capacitors, contactors, and refrigerants for Trane, Lennox, Goodman, and Rheem systems locally, which keeps turnaround tight when your AC dies on a 102°F Saturday. Factory-trained compatibility across all nine brands means accurate diagnostics instead of guesswork, and honest answers about whether your 18-year-old Goodman is worth repairing or if you’re throwing money at a unit that’s already past its design life.
Common AC Repair & Installation Problems We See in San Ramon Homes
- Original builder-grade 3-ton units failing in clusters across entire Dougherty Valley cul-de-sacs. When one home’s identical 2005-installed Goodman or Lennox seizes, neighbors with the same floor plan and original equipment start calling within weeks. We’ve replaced four units on the same San Ramon street in a single July.
- Undersized duct runs to upstairs bedrooms in 2000s tract homes. The original design prioritized construction speed over airflow engineering. Even a new high-SEER unit can’t push enough cold air through 6-inch ducts to cool a 250-square-foot upstairs bedroom facing afternoon sun.
- Attic-mounted air handlers cooking in 140°F+ spaces. San Ramon’s inland heat turns attics into ovens, accelerating refrigerant leaks, drying blower motor bearings, and cracking drain pans. Without radiant barrier or improved ventilation, replacement units suffer the same shortened lifespan.
- Homeowners adding central AC after years of “getting by” without it. San Ramon’s heat escalation, 20 degrees hotter than coastal Bay Area cities, has pushed many older homes near Crow Canyon Road and the 94583 ZIP to finally install central systems where window units used to suffice.
Pricing for AC Repair & Installation in San Ramon, CA
Here’s what San Ramon homeowners can expect for AC work:
| Service | Price Range |
|---|---|
| AC Repair | $150–$650 |
| Refrigerant Recharge | $150–$650 |
| AC Installation / Replacement | $3,500–$7,500 |
Installation costs vary with system size, SEER efficiency rating, and whether your San Ramon home needs duct modifications. A straight swap of a 3-ton unit with compatible existing ductwork sits at the lower end. Upsizing returns, adding zoning, or converting from a closet-mounted to attic-mounted system pushes toward the higher end. We don’t quote over the phone for installations, every San Ramon home needs a load calculation and duct assessment. Estimates are free. Call (844) 560-6978 to schedule.
We Also Serve Cities Near San Ramon
Our service radius covers Dublin, Danville, Moraga, and Blackhawk from our base near San Ramon. If you’re in one of these neighboring cities and found this page searching for local HVAC help, we handle your area too, same owner-managed service, same brand coverage, same free estimates.
Serving San Ramon, CA — Our Local Coverage Area
We’re based in the San Ramon 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 San Ramon
Replace it before it fails catastrophically in mid-July. At 19–20 years, your unit is past design life, running at reduced efficiency, and using refrigerant that’s increasingly expensive to recharge. In San Ramon’s 105°F heat, a seized compressor turns into an emergency installation with no time to compare options. We offer free replacement estimates in Dougherty Valley, call (844) 560-6978 to schedule before summer peaks.
Your ductwork is likely undersized for the upstairs runs, a common shortcut in 1990s–2000s San Ramon production builds. Hot attic air surrounding the ducts adds heat gain before the air even reaches your bedroom vents. We measure static pressure and airflow room-by-room, then determine whether duct upsizing, a secondary return, or zoning solves it. Sometimes the fix is ductwork, not a bigger AC.
Yes, the City of San Ramon requires permits for AC replacement and new installation, including electrical and mechanical inspections. We handle permit submission and scheduling as part of our installation service, you won’t need to visit City Hall or coordinate inspection windows yourself.
We recommend 16 SEER as the practical minimum for San Ramon given the extended cooling season and extreme heat days. Higher SEER units (18–20+) pay back faster here than in milder coastal climates because your system runs more hours annually. The exact optimal SEER depends on your home’s insulation, duct efficiency, and how long you plan to stay, we’ll run the numbers during your free estimate.
Yes, if that space isn’t served by your central ductwork. San Ramon’s heat makes garages and upstairs bonus rooms unusable without dedicated cooling, and extending central ductwork to these spaces often costs more than a properly sized mini-split. We install Daikin and Carrier mini-splits with inverter compressors that handle San Ramon’s temperature swings efficiently. Call (844) 560-6978 for a free assessment of your space.
Written by Marcus Feldman, Owner and Service Manager at Crestview Heating & Air California, serving San Ramon and the greater Bay Area since 2005.