Seasonal tune-up and full diagnostic on your Carrier, Trane, or Goodman system - readings shown to you before any repair is proposed
Diagnosis first, numbers second - you approve the repair price before a single part goes in.
Fast, Reliable AC Repair Across Somerset
AC repair in Somerset, TX typically costs $150-$650, and most calls are handled same day when you reach us before mid-afternoon. Our dispatch office in San Antonio coordinates crews who serve Somerset directly, so we’re familiar with the rural routes off FM 476 and the manufactured-home communities where rooftop package units are the norm.
We’re Coldharbour Heating & Air, and we’ve been part of the Kingswell network since 2003. Our AC Repair team knows Somerset’s housing stock - the 1980s and 1990s manufactured homes with flex duct that turns to dust, the new tract construction pushing south from San Antonio along US 281, and the propane-heated properties that don’t have the luxury of Atmos Energy’s natural gas lines. When your compressor won’t start or your capacitor’s bulged out from another 105°F July afternoon, you need someone who understands why your system is struggling, not just someone with a gauge set. Call (817) 402-2972. A live person answers 24 hours a day, 7 days a week.
Why Coldharbour Heating & Air Is Somerset’s Preferred AC Repair Company
Somerset homeowners have long memories, and so do we. We’ve built our reputation here by showing up in the window we promised, handing over a written price before touching a single tool, and leaving the job site cleaner than we found it. That’s The Kingswell Way, and it’s how we operate on every call.
Our technicians are background-checked, uniformed, and trained to service nine major residential HVAC brands including Trane, Lennox, Goodman, and Rheem. When we dispatch to a home off Applewhite Road or near the Somerset High School area, the tech who arrives can work on whatever system is already installed - no “we’ll have to order parts and come back next week” runaround.
Response time matters in Somerset’s heat. From our San Antonio dispatch office, we typically reach Somerset addresses within 45-90 minutes during standard hours. Emergency calls after hours are handled by the same live-person phone coverage, not a voicemail tree that dumps you into a black hole until morning.
Every repair we complete carries our 365-Day Done Right Promise: a written guarantee that if the repair fails within a full year, we return and correct the work at no additional charge. No argument. No re-diagnostic fee. It’s on paper before the technician leaves your home.
AC Unit Repair in Somerset
AC Unit Repair in Somerset covers everything from a compressor that won’t kick on to a system that’s blowing warm air during the worst of August. Because Somerset’s housing stock leans heavily toward manufactured and mobile homes - many from the 1980s and 1990s - our techs spend a lot of time on rooftop package units and the flex duct systems that feed them. A typical AC Unit Repair in Somerset runs $150-$650, parts and labor included. The wide range reflects whether we’re replacing a $40 capacitor or addressing a refrigerant leak that requires brazing, pressure testing, and a full recharge.
On a 100°F August afternoon off the FM 476 corridor, one of our techs answered a no-cool call at a 1992 manufactured home where the rooftop package unit was short-cycling. Our tech found a bulged run capacitor and an overcharged refrigerant charge fighting a degraded flex duct system; we replaced the capacitor, dialed in the charge, and showed the homeowner that a like-for-like swap would have masked the real problem - undersized ductwork choking a 3-ton system that was really only moving 2 tons of air.
When Your System Short-Cycles
Short-cycling - the compressor kicking on and off every few minutes - is one of the most common symptoms we see in Somerset’s older manufactured homes. It looks like a thermostat problem, but it’s often high static pressure from collapsed flex duct forcing the system to protect itself. We measure airflow at the registers and static pressure at the air handler before we quote any repair. Fixing the capacitor without addressing the ductwork just burns out the next capacitor faster.
Refrigerant Leaks in Package Units
Rooftop package units on 1980s-1990s mobile homes lose refrigerant charge at brazed joints and Schrader valves long before the compressor fails. It’s a slow leak our techs learn to chase with a scale, not just a manifold set. We weigh the charge in and out, pinpoint the leak with electronic detection, and braze repair rather than just topping off and hoping. A refrigerant recharge (topping off the cooling fluid your AC needs to run) without finding the leak is throwing money into the wind.
AC Capacitor Replacement in Somerset
AC Capacitor Replacement in Somerset is one of the most common calls we get during heat waves, and it’s also one of the most misdiagnosed. The capacitor is a small cylindrical component that stores the electrical charge your compressor and fan motor need to start - like a battery that delivers a jolt of power on demand. In Somerset’s brutal summers, where heat index values routinely exceed 105°F from May through September, capacitors bulge, leak, or simply lose their microfarad rating after years of thermal stress. A typical AC Capacitor Replacement in Somerset runs $150-$650, which includes diagnosis, the new part, and installation.
Single-zone thermostats in long, narrow floor plans run the blower motor constantly trying to satisfy one sensor, hiding capacitor failures until the compressor shorts out on the hottest day of the year. By the time you notice warm air, the capacitor may have been struggling for weeks.
How We Test Before We Replace
We don’t guess. Our techs discharge the old capacitor safely, test it with a multimeter for microfarad rating against the manufacturer’s spec, and check the compressor amp draw while it’s running. A weak capacitor strains the compressor; a failed capacitor can cause the compressor to overheat and trip on internal thermal overload. We give you the test results in writing before we quote the replacement.
Why Capacitors Fail Faster Here
Somerset’s combination of extreme heat and voltage fluctuation at rural addresses - especially in older manufactured-home parks with undersized service panels - puts capacitors under more stress than in urban San Antonio. We check your electrical supply voltage at the disconnect box as part of every capacitor call. If your panel is delivering 108 volts on a 120-volt circuit, that capacitor is working harder than it was designed to, and it’ll fail again.
Trusted Brands We Service in Somerset
Our technicians carry diagnostic tools and common repair parts for Trane, Lennox, Goodman, and Rheem systems, which means most Somerset repairs don’t require a return trip. We stock capacitors, contactors, fan motors, and refrigerant for these brands specifically because they’re the ones we see most often in south Bexar County homes. For less common systems - or when a rooftop package unit needs a proprietary board - we source parts through our Kingswell network with next-day availability on most items. You won’t wait a week for cooling because we didn’t plan ahead.
Common AC Repair Problems We See in Somerset Homes
- Collapsed flex duct under aging manufactured homes. The flex duct installed in 1980s and 1990s Somerset mobile homes has reached end of life. It collapses, tears at the collars, or simply disintegrates in attics that hit 140°F. The system runs, but air never reaches the registers. We inspect ductwork with a borescope before we declare the mechanical system at fault.
- Refrigerant leaks at brazed joints on rooftop package units. Thermal expansion and contraction over 30+ years opens hairline cracks in refrigerant lines. The system slowly loses charge, works harder, and eventually the low-pressure switch locks out the compressor. We recover remaining refrigerant, braze repair, pressure-test with nitrogen, and recharge to factory spec.
- Electrical panels too small for modern AC loads. Many Somerset homes still have 100-amp service panels that were adequate for a 2-ton package unit in 1990 but can’t handle a modern 3.5-ton system with variable-speed blower. We check panel capacity and breaker condition before recommending any equipment change - upgrading your AC without upgrading your panel is a fire risk.
- Single-zone thermostats fighting unbalanced floor plans. One thermostat at one end of a long manufactured home can’t satisfy the far bedrooms. The system runs constantly, wears out capacitors and contactors prematurely, and still doesn’t cool evenly. We discuss zoning options or ductless mini-splits when the layout doesn’t match the equipment.
Pricing for AC Repair in Somerset, TX
We believe you should know what you’re paying before we start. Here’s what AC repair costs look like in the Somerset market:
| Service | Typical Range in Somerset |
|---|---|
| AC Unit Repair | $150-$650 |
| AC Capacitor Replacement | $150-$650 |
| AC Tune-Up | $80-$200 |
What moves a job toward the higher end? Refrigerant leaks requiring brazing and pressure testing, electrical panel work to safely support the system, or duct repairs under a manufactured home where access is limited. What keeps it lower? A straightforward capacitor swap, contactor replacement, or thermostat upgrade with no secondary issues. We hand you a written price before any work begins. That price does not change at the door. Estimates are free - call (817) 402-2972 to schedule.
We Also Serve Cities Near Somerset
Our crews work throughout southern Bexar County and surrounding communities. If you’re in Somerset proper, or nearby in Lytle, San Antonio, Helotes, or Converse, the same live-person phone coverage and written guarantee apply. Dispatch is coordinated from our San Antonio office, but the technician who arrives knows your area’s housing stock and climate challenges.
Serving Somerset, TX - Our Local Coverage Area
We’re based in the Somerset 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 About AC Repair in Somerset
A new system sized to match the old label won’t perform better if the original ductwork was undersized or has collapsed. In Somerset’s 1980s-1990s manufactured homes, we regularly find 3-ton systems trying to push air through duct designed for 2 tons. The new compressor works harder, draws more amps, and fails faster than the old one did. We measure actual airflow and static pressure before we recommend any replacement, so you don’t pay for equipment that can’t breathe.
For most Somerset properties, yes. Because no Atmos Energy natural gas mains serve most rural addresses here, a large share of propane-heated homes run furnaces off 250-500 gallon tanks, and during a freeze event those tanks empty fast. A dual-fuel heat pump runs on electric down to about 35°F, switching to propane backup only in extremes. That cuts propane consumption by 60-70% and eliminates the mid-winter panic of a dry tank. Call (817) 402-2972 for an exact quote - estimates are free.
About 10 minutes with a multimeter and an amp clamp. We discharge the capacitor safely, test its microfarad rating against the manufacturer’s spec, and check compressor amp draw. If the capacitor is within 10% of spec and the compressor draws normal amps, we keep looking. We don’t replace parts to see if it helps. Call (817) 402-2972 for an exact quote - estimates are free.
Single-zone systems in long, narrow manufactured-home floor plans can’t balance airflow between the living room and the far bedrooms. The thermostat satisfies near its location while the rest of the house swelters. The blower runs constantly, hiding capacitor wear until total failure. We measure register airflow and discuss ductless mini-splits or zoning when the layout fights the equipment.
Because Somerset’s rural addresses sit outside Atmos Energy’s natural gas mains, so most homes here heat with propane - a 250-500 gallon tank that empties fast during a freeze and makes dual-fuel heat pumps the default upgrade conversation. That means an AC repair call in Somerset often turns into a heating conversation that wouldn’t happen 20 miles north inside San Antonio’s city limits. We also check your electrical panel because many 1980s-1990s manufactured homes have 100-amp service that can’t safely handle modern AC loads. It’s not upselling - it’s making sure any repair we do doesn’t create a hazard.
Written by Victor Mancini, Owner at Coldharbour Heating & Air, serving Somerset since 2003.







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