AC repair
Furnace & heating
Heat pumps
Ductless mini splits
Carrier
Trane
GoodmanSeasonal 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.
Get your free estimateFast, Reliable AC Repair Across Kennesaw
AC repair in Kennesaw typically runs $150 – $650 depending on the part and the system, and most calls in neighborhoods like Legacy Park, Cedar Crest, and the subdivisions around Kennesaw State University can be diagnosed same day. If your air conditioner is blowing warm, short-cycling, or simply not keeping up with a Georgia summer afternoon, we’ll send a background-checked, uniformed technician to your door with a written price before any work begins. That’s how AC Repair should work, and it’s how we run every job through The Garrison Standard. Call (478) 400-5908 and you’ll reach a live person, 24/7, no voicemail queue.
Why Dalton Heating & Air Sandy Springs Is Kennesaw’s Preferred AC Repair Company
We’ve spent a lot of time in Kennesaw attics and backyards. The housing here tells a very specific story – 1990s systems in Legacy Park and Cedar Crest that were built to run on R-22, newer builder-grade heat pumps near KSU that were installed fast and cheap, and a few older homes near downtown with ductwork that was never meant to handle a modern heat load. A technician who doesn’t know those neighborhoods will waste your time guessing. Our crews see the same failure modes week after week, and that pattern recognition gets the diagnosis right the first time.
Dalton Heating & Air is led by Marco Benitez and operates as a Garrison Partners company, which means every call is held to The Garrison Code: arrive inside the stated window, price in writing before starting, do the job by the book, leave the site clean, and stand behind the work for a full year. That last part is not boilerplate. Every repair carries a 365-Day Done Right Promise. If the fix doesn’t hold, we come back at no charge. Homeowners who’ve been burned by shifting quotes and no-shows tend to appreciate Kennesaw Furnace Repair that difference immediately.
We also answer the phone with an actual human being, around the clock. When your AC dies on a Sunday night in July, you’re not leaving a message and hoping. You’re talking to someone who can dispatch a tech to Kennesaw the same day.
Styles & brands we work with
AC Service in Kennesaw
AC Service in Kennesaw is the scheduled maintenance visit that catches small problems before they become $650 failures on a 95-degree afternoon. In a humid subtropical climate like ours, condensers work hard all season – spring pollen coats the fins, fall leaves pile against the coil, and humidity keeps the system cycling even on mild days. A full AC service includes cleaning the condenser coil, checking refrigerant pressures, testing capacitors and contactors, inspecting the evaporator coil, and verifying airflow across the system. Most Kennesaw homeowners schedule this once a year, ideally in spring before the real heat settles in.
Tune-Up and Inspection
On a typical tune-up, our tech spends 60 – 90 minutes going through the system methodically. The written report tells you exactly what was checked, what readings were taken, and whether anything needs attention. Tune-ups in Kennesaw run $80 – $200, and the report is yours even if nothing needs repair.
Coil Cleaning and Airflow Check
Condenser coil cleaning in Kennesaw runs $150 – $400 depending on how clogged the fins are. Slab-on-grade homes from the late 1980s and 1990s tend to collect more debris because the unit sits closer to grass and mulch. A dirty coil raises head pressure, shortens compressor life, and drives up energy costs – and it’s one of the most overlooked maintenance items we see.
AC Unit Repair in Kennesaw
AC Unit Repair in Kennesaw covers the actual breakdown work: bad capacitors, failed fan motors, refrigerant leaks, frozen evaporator coils, compressor problems, and faulty thermostats. When something stops working, the first question is always what failed and why. That’s where a methodical diagnostic matters. In Kennesaw specifically, we see a pattern where older systems fail from age-related part wear while newer builder-grade systems fail from installation shortcuts – undersized returns, kinked linesets, or poor duct sealing. The repair approach is different for each, and guessing costs you money.
Capacitor and Electrical Repairs
Capacitors are the most common part we replace in Kennesaw. They’re simple, inexpensive components that take a beating in Georgia heat. A swollen or weak run capacitor in a 20-year-old Trane or a 5-year-old Goodman will cause hard starts, intermittent cooling, or a compressor that trips its thermal overload. Capacitor replacement runs $150 – $300 and usually fixes the issue in under an hour.
Refrigerant Service and Leak Detection
If your system is low on refrigerant, there’s a leak somewhere – refrigerant doesn’t get used up. We find the leak before adding anything, because topping off a leaking system is like putting air in a flat tire and calling it fixed. Refrigerant charge adjustment runs $200 – $450. For R-22 systems, there’s an important caveat tied to the 2025 phase-out, and we cover that in the FAQ below.
Trusted Brands We Service in Kennesaw
Our technicians are factory-trained on nine major residential HVAC brands, including Rheem, York, Daikin, and Bryant. In practice, that means we can diagnose a Carrier in Kennesaw without a learning curve, whether it’s in Legacy Park, Cedar Crest, or near KSU. We also maintain local parts inventory and supplier relationships across the metro area, which shortens turnaround when your system needs a motor, board, or coil. You shouldn’t have to wait three days for a common capacitor because the tech didn’t have it on the truck. We stock the parts Kennesaw systems actually use.
See the difference
Before
After
Before
After
Before
AfterCommon AC Repair Problems We See in Kennesaw Homes
- Frozen evaporator coils in newer construction near KSU. Many builder-grade homes have air handlers in unconditioned attics with undersized return ducts. High static pressure starves the coil of airflow, and on muggy afternoons that coil ices over even though the refrigerant charge is correct.
- Low refrigerant on original 1990s R-22 systems. Legacy Park and Cedar Crest have hundreds of systems still running R-22. Slow leaks are common at this age, but topping off becomes illegal in 2025, which changes the repair-versus-replace math significantly. We spell out the real costs either way.
- Kinked or pinched linesets in slab-on-grade homes. Late-1980s construction often ran refrigerant lines through tight wall cavities and under slabs. A kinked suction line from a past repair can restrict flow and cause chronic low cooling with no visible leak – and it takes an experienced tech to trace it before wasting time on the condenser and blower.
- Compressor failures from dirty coils and failing capacitors. Georgia heat is brutal on compressors. When the coil is packed with pollen and the capacitor is delivering 60% of its rating, the compressor runs hot and hard until it trips – or dies. Regular cleaning and cheap electrical checks prevent the expensive failure.
Pricing for AC Repair in Kennesaw, GA
Most AC repairs in Kennesaw fall between $150 and $650, and the specific number depends on the part and the system. Here’s what we quote for common line items:
| Service | Price Range |
|---|---|
| Capacitor replacement | $150 – $300 |
| Refrigerant charge adjustment | $200 – $450 |
| Condenser coil cleaning | $150 – $400 |
| Thermostat calibration | $80 – $200 |
Some jobs are straightforward and finish in under an hour. Others – like a refrigerant leak that requires line repair or an R-22 charge on a system nearing the end of its life – take longer and cost more. What doesn’t change is the process: the price is in writing before any work starts, and if the repair fails within a year, we return at no charge under the 365-Day Done Right Promise. Estimates are free. Call (478) 400-5908 for an exact quote.
One thing worth saying plainly: the cheapest repair is the one that fixes the actual problem. We’ve seen Kennesaw homeowners pay for three capacitor replacements before someone found the real issue was a failing contactor. Our techs are not paid on what they sell, and the diagnostic is part of the job.
We Also Serve Cities Near Kennesaw
Our crews work across Kennesaw and into nearby Kennesaw area communities like Roswell. If you’re just outside our immediate service area, call and ask – dispatch routes change daily, and we can often reach a home the same day.
Serving Kennesaw, GA - Our Local Coverage Area
We’re based in the Kennesaw 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 Kennesaw
We can repair the leak, but the honest answer depends on where the leak is and how much refrigerant the system has lost. R-22 production ended in 2020, and topping off an older R-22 system with reclaimed refrigerant gets more expensive every year – and it stops being legal for new charges in 2025. If the leak is in an accessible line or the evaporator coil, the repair may make sense. If the compressor is nearing 20 years old and the coil is leaking, you’re likely better off putting that money toward a SEER2-rated replacement. We’ll show you both numbers in writing and walk through the math without pressure. Call (478) 400-5908 and we’ll assess it honestly.
In most older Kennesaw homes, the answer is airflow – specifically, ductwork that was sized for a different era and heat load. Homes from the 1960s and 1970s near downtown often have original metal ducts, undersized returns, and air handlers that were spec’d before modern heat gains from attics and windows were understood. The system may be running fine mechanically, but it can’t move enough air to overcome the load. We check static pressure and return sizing before recommending anything, because adding refrigerant to a system with an airflow problem just wastes money. Call (478) 400-5908 for an airflow assessment.
Kennesaw enforces residential noise limits that generally restrict continuous mechanical noise from disturbing neighbors, and most modern condensers run 60 – 75 decibels. If your neighbor’s unit is significantly louder than that, it may have a failing fan motor, loose compressor mounts, or it may simply be an older unit that predates current efficiency and noise standards. We can’t address a neighbor’s unit without their invitation, but we can tell you if the unit is operating unreasonably loud and advise you on how to approach it. For your own home, a sound blanket, proper clearance, or a newer inverter-driven system can dramatically cut noise. Call (478) 400-5908 to discuss.
Usually not. In our experience with newer builder-grade homes near Kennesaw State University, the more common culprit is undersized ductwork and high static pressure – the air handler sits in a hot attic, the return is too small, and the evaporator coil ices over because it’s starved of airflow. That’s not a leak. It’s an installation shortcut. We check static pressure, return sizing, and refrigerant charge together to isolate the real cause before any parts are replaced. A frozen coil left running can damage the compressor, so call (478) 400-5908 sooner rather than later.
Yes, and it’s one of the highest-value tests we run. A capacitor test measures the component’s actual microfarad rating against its labeled spec – not just whether it’s “working.” In Legacy Park, our tech found a 1998 Trane R-22 condenser running at 180 PSI head pressure on a 95-degree afternoon. The compressor was hot, but the real culprit was a swollen run capacitor delivering only 60% of its rated microfarads. We replaced the capacitor, adjusted the refrigerant charge to spec, and verified a 14-degree temperature drop across the evaporator coil. That five-minute test likely saved a $2,400 compressor replacement before the season ended. A capacitor test is included in our AC service, and it catches failing capacitors weeks before they cause a no-cool call. For a Carrier in Cedar Crest or any unit in Kennesaw, call (478) 400-5908 to schedule.
Contact Dalton Heating & Air Sandy Springs today at (478) 400-5908 for a free estimate on AC repair in Kennesaw. We’ll put the price in writing before any work begins and stand behind it for a full year.
Written by Marco Benitez, Owner at Dalton Heating & Air Sandy Springs, a Garrison Partners company operating under The Garrison Standard since 2003.