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 Keller
AC repair in Keller typically runs $150-$650, and our technicians are usually on-site the same day you call. We’re familiar with the specific headaches that come with Keller’s large two-story brick homes and aging dual-zone systems, and we carry parts for Trane, Lennox, Carrier, and other major brands so most jobs finish in one visit.
When your upstairs zone quits at 3 p.m. on a 102°F July afternoon, you don’t want a dispatcher in another state. Our Dallas-Fort Worth office coordinates scheduling for Keller, which means crews know the area, know the housing stock, and know that a “quick recharge” on a 1998 R-22 system in Bloomfield often means walking the homeowner through real options. Call (817) 402-2972 any time, day or night. A live person answers, and we’ll give you a firm arrival window before we hang up.
Why Coldharbour Heating & Air Is Keller’s Preferred AC Repair Company
Keller homeowners call us because we’ve been the local, independently operated face of the Kingswell Guarantee since 2003. That means four written promises on every job: a price before the work starts, a firm arrival window, a clean job site, and our 365-Day Done Right Promise. If a repair fails inside a full year, we come back and correct it at no charge. The guarantee is written down before the technician leaves, not offered as a verbal afterthought.
Our technicians are background-checked, uniformed, and trained on nine major residential HVAC brands including Carrier, Trane, Lennox, Goodman, Rheem, York, Daikin, Bryant, and American Standard. Whatever system is in your home, the person who shows up can work on it. We don’t subcontract to random crews or send a sales rep with a clipboard.
Dispatch is coordinated from our Dallas-Fort Worth office, but the crews serving Keller live and work in the area. They know that a service call off Keller-Smithfield Road during rush hour needs a different buffer than one near Bear Creek Parkway on a Saturday morning. That local routing knowledge translates to on-time arrivals, which is why we can promise a window and stick to it.
AC Recharge in Keller
AC Recharge in Keller most often means adding refrigerant to a system that’s lost charge due to a slow leak, corrosion at the Schrader valves, or age-related permeation through the copper lines. Because so many Keller homes still run original R-22 equipment installed between 1993 and 2008, a recharge request sometimes turns into a larger conversation about refrigerant availability and system replacement timing. A standard recharge in Keller runs $150-$650, with the final price depending on how many pounds your system needs and whether we need to locate and seal a leak.
When a Recharge Makes Sense
If your system is under ten years old and uses R-410A refrigerant, a recharge plus leak repair is usually the right call. We’ll pressure-test the lines, seal the leak, pull a vacuum to remove moisture, and charge the system to factory spec. You’ll get a written price before we start, and the work is covered by our 365-Day Done Right Promise.
When R-22 Changes the Math
R-22 hasn’t been manufactured since 2020, and reclaimed supplies are increasingly expensive and inconsistent. If your Keller home still has its original R-22 system, we’ll give you honest numbers: the recharge cost today, the likelihood of future leaks on a 20-plus-year-old unit, and what a replacement system would run. No pressure, just the facts written down so you can decide.
Emergency AC Repair in Keller
Emergency AC Repair in Keller means your system has failed completely when outdoor temperatures are in the high 90s or above, creating a genuine health risk for children, elderly family members, or anyone with respiratory conditions. We treat these calls with priority routing, and our phone is answered by a live person 24 hours a day, 7 days a week. Emergency repair pricing in Keller follows our standard range of $150-$650; we do not charge overtime premiums for after-hours or weekend calls.
What Counts as an Emergency
Total compressor failure on a 100°F day, a blower motor that won’t start leaving you with zero airflow, or a refrigerant leak that’s dropped your indoor temperature past safe levels. We’ll ask a few questions when you call to confirm priority status and make sure our technician brings the right parts.
What Happens When We Arrive
The technician diagnoses the failure, hands you a written price, and explains your options before touching a tool. If the system can be repaired safely and effectively, we’ll do it. If the failure reveals that replacement is the smarter long-term choice, we’ll show you why and give you that price in writing too. Either way, you decide. No work happens without your clear go-ahead.
Trusted Brands We Service in Keller
Our trucks carry common capacitors, contactors, blower motors, and refrigerant for Trane, Lennox, Goodman, and Rheem systems, plus the other five brands in our training portfolio. That matters in Keller because a Monday afternoon failure shouldn’t mean waiting until Thursday for a parts order. For less common components, our Dallas-Fort Worth warehouse typically has next-morning availability, and we’ll tell you honestly if a same-day finish isn’t possible rather than stringing you along.
Common AC Repair Problems We See in Keller Homes
- Plenum separation from attic air handlers. On a Bloomfield two-story off Keller-Smithfield Road we chased a two-year-old “upstairs is always hot” complaint that two prior tune-ups had never fixed. The upper air handler’s gauges looked fine, but the supply plenum had separated from the unit after two decades of black-clay slab movement, dumping roughly 30% of conditioned air into the attic. We resealed the plenum, re-balanced the flex-duct runs, verified refrigerant charge on the Carrier condenser, and the second floor finally held temperature without touching the equipment.
- R-22 systems that can’t be topped off affordably. Keller’s housing stock peaked between 1993 and 2008, so most homes here are still on their original R-22 systems and almost all of them run two units. A whole-neighborhood replacement wave is hitting dual-zone houses at once, which is not the mixed-vintage, single-system story in closer-in Tarrant County suburbs. When refrigerant is low on a 25-year-old condenser, we walk homeowners through the real math on recharge cost versus replacement.
- Capacitor and blower motor failures during peak heat. Summers routinely push 100°F+ for weeks at a time, placing maximum stress on aging dual systems simultaneously. A weak capacitor on a 1999 Goodman condenser often fails right when you need it most, and the resulting locked rotor can take out the compressor if the homeowner keeps cycling the system.
- Dual-zone imbalance that new equipment won’t fix alone. Keller’s large, two-story brick homes almost universally run dual-zone setups, but a like-for-like tonnage swap without a load calculation and static pressure check just moves the hot upstairs problem to the new equipment. We see this after replacement jobs done elsewhere: brand-new Lennox or Trane units that still can’t cool the second floor because nobody addressed ductwork leakage or undersized returns.
Pricing for AC Repair in Keller, TX
Most AC repairs in Keller fall between $150 and $650, with the final price depending on what failed, which parts we need, and how accessible your equipment is. A simple capacitor replacement on a ground-level condenser runs toward the lower end. A compressor replacement on an attic-mounted air handler in a two-story off Johnson Road takes longer, requires more refrigerant handling, and lands higher.
| Service | Price Range in Keller |
|---|---|
| AC Repair (general) | $150-$650 |
| AC Recharge | $150-$650 |
| Emergency AC Repair | $150-$650 |
We give you a written price before any work begins. That price does not change when the technician is at your door. Estimates are free, and there’s no charge for us to come look at your system and tell you what’s actually wrong. If you’re comparing quotes, ask whether the other company’s “diagnostic fee” gets applied to the repair. Ours does.
We Also Serve Cities Near Keller
Our AC Repair crews work throughout northern Tarrant County and southern Denton County, including Keller and the surrounding communities of Haslet, North Richland Hills, Roanoke, and Southlake. Same written standards, same live-answer phone, same 365-Day Done Right Promise at every address.
Serving Keller, TX - Our Local Coverage Area
We’re based in the Keller 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 Keller
Because the problem is often ductwork leakage, not the equipment itself. North Tarrant County’s expansive black-clay soil swells and shrinks dramatically with seasonal wet-dry cycles, causing slab movement that cracks flex-duct connections at plenums and shifts attic air-handler platforms. Your system tests healthy on gauges while 20-30% of conditioned air dumps into the attic. Call (817) 402-2972 and we’ll inspect the ductwork with a camera; estimates are free.
Yes, we can recharge most R-22 systems, but reclaimed refrigerant is increasingly expensive and supply is unpredictable. We’ll give you the current per-pound price in writing and explain how many pounds your system needs. If the leak is minor and the rest of the system is sound, a recharge buys you time. If the condenser is 25 years old and leaking at multiple points, we’ll show you replacement numbers so you can plan. Call (817) 402-2972 for an honest assessment.
You don’t have to, but there are practical reasons many Keller homeowners do. Your dual-zone setup likely shares a common line set or was sized together for the house’s total load. Replacing one 20-year-old Trane with a modern R-410A unit while leaving a failing R-22 partner on the other floor can create mismatched efficiency, warranty complications, and continued refrigerant headaches. We’ll give you pricing for both scenarios and let you decide what fits your timeline and budget.
A new unit alone usually won’t fix it. Keller’s large two-story brick homes need proper static pressure and balanced duct runs to deliver cooling upstairs. If your flex-duct is original 1990s-2000s vinyl, it’s likely cracked at plenum connections and undersized for modern airflow requirements. We perform a load calculation and duct blaster test before any replacement, and we’ll show you exactly where your conditioned air is going. The price for ductwork repairs is separate and in writing.
Because that’s when your system is working hardest and any weakness gets exposed. Weak capacitors fail under locked-rotor conditions. Low refrigerant charge causes the compressor to overheat. Clogged condensate drains trigger safety shutoffs. And in Keller’s dual-zone homes, both systems are running full-bore simultaneously, which aging electrical components weren’t designed to handle day after day. Our emergency line is (817) 402-2972, answered live, with same-day response when temperatures create a health risk.
Ready to get your Keller home cooling right? Call (817) 402-2972 now for a free estimate. A live person will answer, we’ll give you a firm arrival window, and you’ll have a written price before any work begins. That’s The Kingswell Way, and it’s how we’ve worked since 2003.
Written by Victor Mancini, Owner at Coldharbour Heating & Air, serving Keller and the greater Dallas-Fort Worth area since 2003.







Before
After
Before
After
Before
After