Fast, Reliable AC Repair & Installation Across Pomona
AC repair in Pomona typically runs $150–$650, and most service calls are completed same day. For full AC installation or replacement in older Pomona homes, expect $3,500–$7,500 depending on whether your house needs ductwork redesign. We’re Stonegate Heating & Air California, and we’ve been sending our AC Repair & Installation team into the Pomona Valley for 16 years. Owner Jason Trent supervises every project personally, so when we dispatch to a home off Mission Boulevard or up toward Phillips Ranch, we’re arriving with the right parts, the right crew, and the authority to finish the job without a second trip. Call (855) 467-1888 for a free estimate.
Why Stonegate Heating & Air California Is Pomona’s Preferred AC Repair & Installation Company
We’ve earned 499 verified reviews averaging 4.7 stars across platforms, and a healthy share of those come from Pomona homeowners who found us after a bad experience with a franchise chain. They mention the same thing: Jason Trent showed up as Field Supervisor, not a dispatcher in a call center.
That matters in Pomona more than most cities. The inland heat pocket here, trapped between the San Gabriel Mountains and the Puente Hills, pushes summer temperatures past 105°F while the coastal plain 30 miles west stays moderate. A tech who treats Pomona like “just another inland job” won’t understand why your 1960s ranch with original evaporative ductwork keeps short-cycling its compressor. Our 16 years in California’s HVAC market means we’ve converted dozens of these systems.
We stock parts for Carrier, Trane, Lennox, Goodman, and five other major brands, so Pomona customers don’t wait on a warehouse order from Ontario or Rancho Cucamonga. And because Jason supervises every project, there’s no gap between what gets promised and what gets installed.
Our AC Repair & Installation Services in Pomona
AC Repair
Pomona’s late-summer monsoon pattern, July through September, shoves dew points into the 55–65°F range. That’s the threshold where evaporative coolers quit working and emergency refrigerated-AC calls spike. We see the aftermath: compressors overworked by undersized ductwork, capacitors fried by voltage fluctuation in older 91766 neighborhoods, refrigerant lines corroded by decades of rooftop exposure. Our AC repair calls in Pomona average $150–$650, and we carry capacitors, contactors, and refrigerant for same-day resolution.
AC Installation
This is where Pomona gets complicated. Central neighborhoods, especially 91766 and 91767, are packed with 1940s–1970s bungalows and ranches built for evaporative cooling. The existing ductwork is oversized for high CFM and low static pressure, completely wrong for a modern split system. We responded to a service call on a 1950s ranch in the Lincoln Park neighborhood where the homeowner had a roof-mounted evaporative cooler that was disconnected, a window unit in the master bedroom, and no cooling elsewhere. Our technician diagnosed the patchwork system, recommended a full split-system conversion with duct resizing to Manual D, and installed a 3-ton Trane unit with new ductwork, all in one trip. That’s the standard we hold for every AC installation in Pomona.
AC Replacement
Replacing an existing central AC in Pomona is straightforward. Replacing a patchwork system, a window unit plus a dead evaporative cooler, is not. We price AC replacement at $3,500–$7,500, with the upper end reflecting full duct redesign and removal of old rooftop equipment. Many Pomona homeowners don’t anticipate the ductwork cost. We explain it upfront, show you the Manual D calculations, and let you decide. No upselling pressure. Jason Trent’s presence on the job site means the quote you sign is the scope you get.
Refrigerant Recharge
Low refrigerant in Pomona usually means a leak, not normal consumption. The combination of rooftop condenser exposure, vibration from older mounting pads, and copper lines run through uninsulated attics creates failure points we see repeatedly in central Pomona. We locate the leak, repair it, and recharge to factory spec. A refrigerant recharge without leak repair is a temporary fix, and we don’t do temporary fixes.
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 Pomona
We carry factory training or direct experience on nine brands: Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. For Pomona customers, that means whatever unit is currently failing, whatever badge is on the cabinet, we can source parts and complete the repair without a “we don’t service that brand” dead end. We keep common capacitors, contactors, and refrigerant charges stocked for Pomona’s climate load. Most repairs finish in one visit. Most installations, even full conversions with duct redesign, finish in one day.
Common AC Repair & Installation Problems We See in Pomona Homes
- Retrofitting split-system AC into original evaporative ductwork. The existing ducts are oversized for high CFM and low static pressure. A direct swap without Manual D redesign leads to poor airflow, uneven cooling, and compressor short-cycling. We see this callback scenario from other contractors regularly in 91766.
- Leaving the old evaporative cooler on the roof. Disconnected but still mounted, it traps moisture, risks roof leaks, and blocks maintenance access. We remove it as part of every conversion. The roof patch is cheaper than the water damage.
- Underestimating duct resizing needs during monsoon season. When July-September humidity hits, poorly designed ducts can’t move enough latent heat. The house feels clammy even if the air is cool. Proper duct sizing prevents this.
- The three-system patchwork. Roof cooler disconnected, window unit in the master bedroom, rest of the house sweating. It’s the most common HVAC sales conversation in older central Pomona, and it always ends with the same recommendation: one properly designed system, one day of work, one invoice.
Pricing for AC Repair & Installation in Pomona, CA
Here’s what AC work costs in Pomona’s market. These are real ranges based on 16 years of California HVAC jobs, adjusted for the additional labor and material that Pomona’s older housing stock often requires.
| Service | Price Range in Pomona |
|---|---|
| AC Repair | $150–$650 |
| AC Installation | $3,500–$7,500 |
| Tune-Up | $80–$200 |
What pushes a job toward the high end? Full duct redesign for evaporative-to-refrigerated conversion. Removal of old rooftop equipment. Electrical panel upgrades to handle a modern compressor. What keeps it low? Straight capacitor or contactor replacement on an existing system. We diagnose before we quote, and estimates are free. Call (855) 467-1888.
We Also Serve Cities Near Pomona
Our service radius covers San Dimas to the west, La Verne to the northwest, Charter Oak to the north, and Diamond Bar to the south. Same owner-supervised standard, same stocked trucks, same one-trip completion rate. If you’re in the Pomona Valley and your AC is failing, you’re in our territory.
Serving Pomona, CA — Our Local Coverage Area
We’re based in the Pomona 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 Pomona
Your evaporative ductwork is sized for high air volume at low pressure. A refrigerated split system needs smaller ducts at higher pressure to move cooled air properly. Without redesign, you’ll get weak airflow, hot spots, and a compressor that short-cycles itself to death. We measure your house to Manual D standards and build the duct plan before we quote. Call (855) 467-1888 for a free duct assessment in Pomona.
Yes. A disconnected cooler traps rainwater, corrodes flashing, and eventually leaks into your attic. It also blocks access for future maintenance. We include cooler removal and roof patching in every Pomona conversion quote. The cost is minor compared to repairing water damage or working around an obstacle for the next 15 years.
Most 1,200–1,600 square foot bungalows in 91766 or 91767 need 2.5 to 3.5 tons, but the real answer depends on insulation, window condition, and whether we’re reusing or replacing ductwork. The Lincoln Park ranch we converted ran a 3-ton Trane after Manual J load calculation. We never guess. Call (855) 467-1888 and we’ll size it properly.
Typical range is $3,500–$7,500. The lower end applies if you have existing compatible ductwork and electrical service. The upper end reflects full evaporative conversion with duct redesign, cooler removal, and panel upgrade. We itemize everything in the estimate. No surprises, no pressure. Call (855) 467-1888 for exact pricing on your house.
Probably. Window units are stopgaps, and in Pomona’s 105°F summer peaks, they’re overwhelmed. If the rest of your house has no cooling, you’re living in the patchwork scenario we see constantly. One properly sized central system, installed with correct ductwork, costs less to run than multiple window units and actually cools the whole house. We’ll inspect your setup and give you real numbers. Call (855) 467-1888.
Written by Jason Trent, Owner and Field Supervisor at Stonegate Heating & Air California, serving Pomona and the inland valley since 2008.