Fast, Reliable AC Repair & Installation Across Palo Alto
AC repair in Palo Alto typically runs $150–$650, while a full AC installation costs $3,500–$7,500 depending on your home’s layout and existing equipment. Most repairs are completed same-day, and our team covers all Palo Alto ZIP codes: 94302, 94303, 94304, and 94306. Call (855) 467-1888 for a free estimate.
We’ve been driving down 101 and cutting across Page Mill Road to reach Palo Alto homes for 16 years. Jason Trent, our owner and Field Supervisor, knows the difference between a bay-cooled ranch near the Baylands and a heat-soaked Eichler up in the foothills. That local knowledge changes what we bring on the truck. Palo Alto’s housing stock isn’t generic, and your HVAC contractor shouldn’t treat it that way.
Why Stonegate Heating & Air California Is Palo Alto’s Preferred AC Repair & Installation Company
Our AC Repair & Installation team has built a 4.7-star reputation across 499 verified reviews because we show up prepared for what Palo Alto actually throws at us. We’ve replaced compressors in Old Palo Alto Craftsman homes, abandoned leaking radiant slabs in Fairmeadow Eichlers, and sized new systems for Los Altos Hills properties that bake in afternoon sun.
Jason Trent supervises every project personally. He’s not sitting in a Sacramento office dispatching techs he’s never met. When you call Stonegate, you’re getting an owner who carries field tools and knows how CPAU rebate paperwork differs from PG&E’s. That matters in Palo Alto, where the municipal utility runs its own programs and contractors who assume standard California utility rules leave money on the table.
Our response time to Palo Alto averages under two hours for emergency calls. We keep common parts stocked for Carrier, Trane, and Lennox systems, which dominate the older homes here, and our technicians are factory-trained on all nine major brands we service.
Our AC Repair & Installation Services in Palo Alto
AC Repair
Palo Alto’s mild winters fool people. Heating systems sit idle for months, then crack a heat exchanger or seize a blower motor during the first December cold snap. We see this constantly in Crescent Park and Professorville. Our AC repair service covers everything from capacitor replacements to compressor diagnostics, and we carry the parts to fix most failures in a single visit. If your system is blowing warm air, cycling erratically, or not running at all, we’ll diagnose it fast and give you an upfront price before any work starts.
AC Installation
This is where Palo Alto gets interesting. A substantial share of local homes are mid-century Eichlers with post-tension concrete slabs, radiant floor heating, and zero ductwork. Adding cooling to these homes means ductless mini-splits, period. We recently retrofitted a 1962 Eichler on Midas Drive in Fairmeadow where the original copper radiant-heat slab had sprung a leak. The homeowners wanted cooling for the first time, so we installed a three-zone Daikin ductless mini-split system, routing linesets through the flat roofline to preserve the iconic post-and-beam ceiling. Total job: $6,200, including a $900 CPAU rebate they wouldn’t have gotten with a PG&E contractor.
We also install central AC for homes with existing ductwork, and heat pump conversions for homeowners taking advantage of CPAU electrification incentives. Every installation includes load calculations based on your specific microclimate, whether you’re in the cooler 94306 bay zone or the hotter 94304 foothills.
AC Replacement
Older Craftsman homes in Old Palo Alto still run original 1950s Carrier compressors that rely on R-22 refrigerant. With the EPA phase-out, a compressor failure on one of these systems forces full replacement rather than repair. We handle the complete teardown, proper refrigerant recovery, and new system sizing. For Eichlers, replacement almost always means abandoning the failed radiant slab and switching to ductless. We’ll walk you through exactly what that looks like, what it costs, and what rebates apply.
Compressor Repair
Compressor failures spike in Palo Alto during late summer heat waves, especially in homes near the bay that have undersized units from the 1980s. These systems weren’t designed for the temperatures we’ve seen the last decade. Capacitor and compressor overload failures are common. We test amperage draw, check refrigerant levels, and determine whether a hard-start kit, capacitor replacement, or full compressor swap is the right call. Sometimes the compressor is salvageable. Sometimes the smarter money goes toward a new system. We’ll tell you straight which path makes sense.
Refrigerant Recharge
Low refrigerant means a leak, not just a top-off. We locate the source, repair it, and recharge to factory specifications. In Palo Alto’s coastal-influenced climate, corrosion on outdoor condenser coils accelerates micro-leaks. We check for that specifically.
What happens when you call
- 1
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 Palo Alto
We’re certified and experienced on nine leading HVAC brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. In Palo Alto, we see a lot of Carrier and Trane in the older stock, plus Daikin ductless systems in newer Eichler retrofits. We stock common capacitors, contactors, and refrigerant types for these brands locally, which keeps turnaround tight. Whatever brand you have, we don’t send you away because “we don’t service that one.” Nine brands, one team.
Common AC Repair & Installation Problems We See in Palo Alto Homes
- Radiant-heat slab leaks in Eichlers go undetected for weeks because the copper lines are encased in concrete. By the time the slab buckles or flooring discolors, the entire heating system must be abandoned in favor of ductless retrofits. We diagnose these with thermal imaging and pressure testing before recommending a full conversion.
- Older Craftsman homes in Old Palo Alto still use original 1950s Carrier compressors that rely on R-22 refrigerant. With the phase-out, a compressor failure forces a full system replacement rather than a simple repair. We handle proper refrigerant recovery and new system sizing to current codes.
- Homes near the bay in 94306 often have undersized AC units from the 1980s that were designed for mild summers. The last decade’s heat waves have caused frequent capacitor and compressor failures due to overload. We see this pattern repeat every July and August.
- Extended mild stretches cause heating systems to sit dormant for months, leading to cracked heat exchangers and seized components that only reveal themselves during the first cold snap of the year. We catch these during pre-season tune-ups, before they become emergency calls.
Pricing for AC Repair & Installation in Palo Alto, CA
Here’s what AC work costs in Palo Alto’s market. These are real ranges based on jobs we’ve completed across 94302, 94303, 94304, and 94306:
| Service | Price Range |
|---|---|
| AC Repair | $150–$650 |
| AC Installation | $3,500–$7,500 |
| Tune-Up | $80–$200 |
What moves you within these ranges? System accessibility matters. A ground-level condenser in a standard ranch is straightforward. A rooftop unit on a flat-roof Eichler requires rigging and fall protection. Ductless mini-split installs vary by zone count and lineset routing complexity. Permit fees through Palo Alto’s building department add a fixed cost that doesn’t scale with job size.
Because Palo Alto operates its own municipal utility (CPAU), ductless mini-split installations can qualify for rebates of up to $1,000 per system, a program entirely separate from PG&E’s, and heat pump conversions require CPAU-specific permit filings that differ from neighboring cities. We factor these rebates into your quoted price so you see true net cost, not a number you’ll chase down later. Call (855) 467-1888 for an exact quote. Estimates are free.
We Also Serve Cities Near Palo Alto
Our service radius covers Stanford, East Palo Alto, Atherton, and Los Altos Hills with the same owner-supervised standard. Whether you’re a Stanford facilities manager with a commercial system down or a Los Altos Hills homeowner with a failed heat pump, the same team responds. We know the permit offices, the utility territories, and the housing stock across this whole corridor.
Serving Palo Alto, CA — Our Local Coverage Area
We’re based in the Palo Alto 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 Palo Alto
Warm or discolored flooring patches, a sudden spike in your CPAU water bill, or the sound of running water when no taps are open are the classic signs. We confirm with thermal imaging and pressure testing before recommending any work. Call (855) 467-1888 and we’ll diagnose it properly.
Yes, CPAU offers rebates up to $1,000 per ductless mini-split system and additional incentives for full heat pump conversions, but you must use a contractor who files CPAU-specific paperwork. PG&E rebate rules do not apply here. We’ll handle the filing as part of your installation.
R-22 refrigerant has been phased out since 2020, so replacement refrigerant is scarce and expensive. Most R-22 compressor failures in Palo Alto’s older homes now trigger full system replacement rather than repair. We recover the old refrigerant legally and size a modern replacement to current efficiency standards.
A multi-zone ductless mini-split system, typically Daikin or Mitsubishi, mounted high on walls or suspended from open-beam ceilings. Linesets route through the attic or flat roofline to preserve the architectural integrity. We’ve installed dozens of these across Fairmeadow and Greenmeadow.
Yes, Palo Alto’s building department requires permits for all AC replacements and new installations, with inspections for electrical and refrigerant line connections. We pull permits as standard practice on every job. The process differs from neighboring cities, and we handle it start to finish.
Ready to get your Palo Alto home cooling right? Call Stonegate Heating & Air California at (855) 467-1888 for a free estimate. Jason Trent or a supervised technician will respond, diagnose your system, and give you an upfront price with no pressure.
Written by Jason Trent, Owner and Field Supervisor at Stonegate Heating & Air California, serving Palo Alto and the greater Sacramento region since 2008.