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AC Repair
Science-built AC Repair engineered for peak efficiency, reliable performance, and whole-home comfort across North Georgia.

AC Repair in Dahlonega, GA


When the AC quits in Dahlonega, it rarely picks a convenient day. It’s usually the first muggy week of June, a holiday weekend with a full house, or the stretch when your rental cabin is booked solid. A lot of homes around Lumpkin County also run equipment that’s 12 to 18 years old, so a small failure can snowball if the real cause gets missed. AC repair in Dahlonega, GA, should find why the unit failed, fix it correctly, and leave you with an air conditioner that keeps up with mountain humidity instead of limping through the rest of the summer.

Our reviews

What homeowners are saying

Excellent4.797 reviews
4.7
Excellent97 reviews
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John D
3 days ago
Trustindex verifies that the original source of the review is Google.
Shawn always does a great job. We don’t want any other technician working on or servicing our system.
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Cb P
12 days ago
Trustindex verifies that the original source of the review is Google.
It’s a pleasure working with Knepper HVAC. Have had nothing but great service, from great people, every time. Highly recommend.
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Richard V
16 days ago
Trustindex verifies that the original source of the review is Google.
Shawn is always great! Professional, knowledgeable and courteous.
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Tracy V
16 days ago
Trustindex verifies that the original source of the review is Google.
Friendly and professional, as always! We have used them for over 20 years and will continue to use them.
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Jim B
17 days ago
Trustindex verifies that the original source of the review is Google.
Matthew is a pleasure to work with and his highly skilled
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Bill R
19 days ago
Trustindex verifies that the original source of the review is Google.
Knepper is our go-to company for HVAC work ans Shawn is our go-to guy at Knepper. He knows our system and keeps it in tip-top shape. He is meticulous and thorough and a nice guy on top of all that. Note: The number I put under “How much did you pay?” is for twice a year service on our combined heating and air conditioning systems.
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Charles H
20 days ago
Trustindex verifies that the original source of the review is Google.
Shawn is very personable and very knowledgeable in his work. Such a talented person to represent your company.
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Chris B
22 days ago
Trustindex verifies that the original source of the review is Google.
Our technician, Shawn, was extremely professional and polite! After making the repair, he went over the system with me so I would understand how to best utilize. Thank you again Shawn!
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Richard C
23 days ago
Trustindex verifies that the original source of the review is Google.
Always friendly and knowledgeable!! Thank you‼️
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Daniel S
24 days ago
Trustindex verifies that the original source of the review is Google.
Shawn is a fantastic technician! Knowledgeable, courteous, on time and a good communicator! Today’s work was under warranty, both the parts, and labor were free! Always satisfied with anything that Knepper does at our home! I love that they do excellent work and stand behind what they do! Highly recommend them!
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Jennifer E
26 days ago
Trustindex verifies that the original source of the review is Google.
We’ve been using Knepper for several years and their technicians are knowledgeable, efficient and helpful. Adam was friendly and shared information about the system repairs needed. (He’s been to our house before and is consistently helpful!)
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Ellis O
33 days ago
Trustindex verifies that the original source of the review is Google.
We've used Knepper for generations. Quality people and quality products. I've dealt with Chris, Shane, Matt, Ricardo, Christine, Wendy ... probably everyone on the team. All of them are first rate.

Air Conditioning Repair From a Dahlonega Team That Diagnoses First

Knepper Heating & Air Conditioning repairs central air conditioners, heat pumps, and variable-speed inverter systems for homeowners in Dahlonega and nearby North Georgia communities. We’ve been fixing cooling problems here since 2005, and our NATE-certified technicians are trained on the newer inverter equipment that a lot of other shops still avoid.

Our approach is simple: test before we replace anything. A dead capacitor might be the part that failed, but if poor airflow or a wrong refrigerant charge cooked it, a new one won’t last. We check the whole cooling circuit, including the ductwork, so the repair holds.

AC repair is one part of our full lineup of air conditioning services, which also covers maintenance and new installs.

Signs Your AC Needs Repair

Some cooling problems are obvious, and some creep up over a few weeks. In our area, humidity and long run times tend to expose weak parts first. Schedule service if you notice any of these:

  • Warm or barely cool air: The fan runs, but the air from the vents isn’t much cooler than the room.
  • Ice on the lines or coil: Frozen refrigerant lines usually point to low airflow, a dirty coil, or a refrigerant leak.
  • Humid, clammy rooms: If the house reads 72 but feels damp, the AC may be short cycling or losing its ability to dehumidify.
  • Buzzing, grinding, or clicking: Electrical and motor problems often make noise before they fail completely.
  • Water near the air handler: Clogged condensate drains are common in North Georgia summers and can soak a ceiling or crawl space.
  • Breaker trips or no start: An outdoor unit that hums but won’t run often has a failing capacitor or contactor.

Catching these early usually means a smaller repair. Waiting tends to turn a worn part into a seized compressor.

How We Fix Air Conditioners in Dahlonega

Every repair starts with diagnostics. We measure temperatures, pressures, and airflow, inspect electrical components, and look at the duct system before recommending a fix.

Common AC Repairs We Handle

The fixes we make most often in Dahlonega homes include replacing capacitors, contactors, and fan motors; clearing frozen coils and clogged drain lines; finding and repairing refrigerant leaks; and correcting thermostat and control problems, including smart thermostat setups. On inverter systems, we read the unit’s error codes and use manufacturer diagnostics, which matters because these systems don’t fail the same way older single-stage units do.

Many of the Daikin systems we install can also be monitored remotely. That lets us spot some problems early and, in some cases, adjust settings without a truck roll, which helps owners of second homes and rental cabins.

When Repair Isn’t the Best Move

Sometimes the honest answer is that the unit isn’t worth fixing. Most central ACs last around 12 to 15 years here, so a major failure on older equipment, like a compressor or a leaking coil, deserves a real comparison before you spend money. We’ll show you what the repair costs against what AC installation and replacement would involve, and you decide.

If your home uses a heat pump rather than a straight AC, our heat pump repair covers the reversing valve, defrost controls, and other parts that only heat pumps have.

Book AC Repair in Dahlonega Today

If your air conditioner is blowing warm air, freezing up, or making noises it didn’t make last summer, don’t wait for it to fail completely. Our office is open seven days a week from 8 a.m. to 5 p.m., and our dispatcher will set up a visit that fits your schedule. Request AC repair online and we’ll get a technician headed your way.

Frequently Asked Questions


How much should an AC repair cost?

AC repair cost depends on what failed, the part’s price, how long the repair takes, and whether your unit is a standard single-stage model or an inverter system. A capacitor or drain line clearing is a small job, while a refrigerant leak repair or compressor replacement is a much bigger one. We diagnose the problem first and give you the cost before any work starts.

Why is my AC running but not cooling?

An AC that runs without cooling usually has one of a few problems: a dirty filter or coil choking airflow, low refrigerant from a leak, a failed capacitor keeping the outdoor fan or compressor off, or a frozen evaporator coil. In humid Dahlonega summers, clogged drains and iced coils are especially common. Check the filter and breaker first, and have a technician look at it if the air still isn’t cold.

How do I reset my AC if it’s not cooling?

Turn the thermostat off, then switch off the AC breaker and the outdoor disconnect for about five minutes before turning everything back on. If your unit has a reset button, it’s usually on the outdoor unit or near the blower, but don’t press it repeatedly. If the AC trips again or still won’t cool, there’s an underlying problem that needs a technician.

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