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Top-Rated Central a/c service or repairers in Louisville - Updated Nov 2026

Avatar for Sal’s Heating, Cooling, Plumbing and Sewer Inc.
Sal’s Heating, Cooling, Plumbing and Sewer Inc.
4.6(
5,521
)
Central A/C - Service or Repair

Serving Louisville, OH and surrounding areas

Approved

In business since 1975

Free estimates

Emergency services offered

"The job was done perfectly, as I come to expect from Sal's. Over the years I have had a furnace, central air, and a water heater installed , along with a garbage disposal unit. All services were done professionally. Our service technician was Cameron Jenkins, and I want to thank Sal's & his fine employees for consistently exceeding expectations!!"
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+15

Response time1 day
Response rate100%
9 neighbors recently requested a quote
Avatar for D. Miller Mechanical, LLC
D. Miller Mechanical, LLC
4.5(
66
)
Central A/C - Service or Repair

Serving Louisville, OH and surrounding areas

Approved

In business since 1975

Free estimates

Emergency services offered

"Dwight Miller (DMiller Mechanical) came to our house to give us a quote on replacing our 20 year old geothermal furnace that we’ve been pouring money into for repairs and also to replace our 20 year old hot water tank. He was 1 of 3 contractors invited to price his services He did a detailed examination of our current systems and explained our options in an logical, no pressure manner. He also provided a firm quote in writing for the cost to do the job. We thanked him for his time while we waited on the other 2 contractors to give us their quotes over the next few days Price is not always the final factor when spending the hard earned money we were about to spend One contractor was less expensive and one was way more expensive. Dwight’s quote was somewhere in the middle We chose Dwight and his team for a variety of reasons: He could do the job very quickly verses waiting 6-8 weeks He was local. You want someone that can meet your needs if problems arise. His is a family owned business. His income and livelihood depends on his reputation (high marks on HomeAdvisor) The personal connection we felt in our spirit with Dwight. He is a like minded, kind hearted Christian business man It turns out that Dwight was the correct person to deal with. Dwight and his adult sons(experienced professionals themselves) showed up each day when they said they would They went out of their way to protect the interior of our home during the tear out of my old systems and the installation of the new units This was a large, labor intensive, skilled job. They took the upmost care to make sure the installation was perfect. Duct work was hand crafted to attach to my existing ducts After the multi-day job was completed they hauled away the old units. They throughly cleaned up the work area. You couldn’t even tell someone had just worked there when they had finished Dwight then took the time to fully explain to my wife and I how the controls worked so that we understood them. This long winded review is for the purpose of stating: If you want an honest, hard working Christian family business that is very professional and makes sure you are happy with the results, then DMiller Mechanical is the company you SHOULD hire to do your heating and cooling work. He is the real deal and I highly recommend that you hire him with NO reservations You won’t regret it"
New Carrier Furnace Install
7 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for Modern HVAC/R, LLC
Modern HVAC/R, LLC
4.6(
14
)
Central A/C - Service or Repair

Serving Louisville, OH and surrounding areas

Approved

In business since 2022

Credit card accepted

Offers commercial services

"Matt is very professional and punctual. He knows what he is doing, whether it is HVAC or commercial refrigeration repair, and has no problem explaining his work clearly and understandably. He is willing to go above and beyond to make his clients happy. Highly recommend him for commercial or residential work."
Response time9 hrs
Response rate95%
Recommended by92%of homeowners
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)
Central A/C - Service or Repair

Serving Louisville, OH and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Excellent service, very fast response to my request for service, picked up laptop, diagnosed issues. Initially thought it was an OS update issue but the hard drive had failed along with other components (including 'CPU). Because other components were involved, a new solid state hard drive was put into a laptop with a working processor - same type CPU as in the failed unit. The laptop was repaired and returned in less than a week. This company picked up and dropped off the laptop (driving from Huntsville, AL (about 60-70 minutes)-- great service in this covid environment. I would recommend this company to my family./friends and will use again."
2014 Super Service Award Winner!
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Recommended by97%of homeowners
Avatar for Advanced Air Solutions LLC
Advanced Air Solutions LLC
5.0(
216
)
Central A/C - Service or Repair

Serving Louisville, OH and surrounding areas

In business since 2013

Free estimates

Emergency services offered

"I have a 101 y/o commercial building with the old boiler. Mark is the only plumber who I found that could service it. He knew what he was doing. Even when that horrible snow hit. His son came out diagnosed the pump. Replaced and serviced the radiators. Thank you"
Before
Heating & A/C Project
Dryer Vent Cleaning Project
After
Heating & A/C Project

+26

Recommended by97%of homeowners
Jaime's Quality Home Improvement
4.4(
417
)
Central A/C - Service or Repair

Serving Louisville, OH and surrounding areas

In business since 1991

Free estimates

"Jaime is simply the best. I’m unexpectedly moving and needed to get my house on the market. i had a huge list of improvements and repairs to get done to get my house show-ready. He did everything i needed from painting to plumbing to electrical and my long list of “honey-do’s”. He was neat, tidy and efficient. His workmanship is impeccable. I would not hesitate to recommend Jaime for any repair you need. Thanks, Jaime - you’re a lifesaver!"
Recommended by98%of homeowners
Avatar for WeatherKing Heating and Air Conditioning
WeatherKing Heating and Air Conditioning
4.7(
156
)
Central A/C - Service or Repair

Serving Louisville, OH and surrounding areas

In business since 2000

Emergency services offered

Credit card accepted

"I called at least 5 places who said they offered emergency service and they either said they couldn’t do it or didn’t answer the phone. We called Weatherking and the dispatcher was pleasant and said we’d hear from the tech shortly. The tech, Matthew, called within 15 minutes and was extremely professional and transparent about the “after hours” fee. He was at our house within an hour in inclement weather. Again, very professional and pleasant, although it was around 11pm on a Friday. He fixed the problem and went over and above our expectations by being quick, thorough, and explaining everything he did. He also did some additional cleaning and told us how to prevent the issue from reoccurring. Will definitely use them again. Thank you Matthew and Weatherking."
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Recommended by95%of homeowners
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FAQs for central a/c service or repair projects in Louisville, OH

Coils work to absorb heat into the refrigerant that flows through them, moving heat from one location to another. For air conditioning, the evaporator coil inside the air handler in your home absorbs heat. It then transfers the heat outside to the condenser coil, where it releases it. The opposite process happens for heat pumps. When the coils get dusty and dirty, it reduces how well these components work.

Skip regular cleanings, and dirt, debris, and mineral deposits will blanket your evaporator and condenser coils. When that happens, the coils can’t shed heat efficiently, so the system works harder and your energy bill climbs. Over time, overheating strains the compressor and can trigger a full breakdown—an avoidable repair that often costs far more than a simple annual cleaning.

AC coil cleaning is an investment that pays for itself in the benefits it provides. Dust‑caked coils force your AC to run longer, so you spend more on electricity and rack up extra wear. A quick professional cleaning restores efficiency, trims monthly bills, and eases strain on expensive parts. Over the long haul, that small yearly fee delays pricy repairs and stretches the unit’s lifespan, making coil cleaning one of the smartest HVAC tune‑ups you can schedule.

Watch for higher electric bills, rooms that stay warm no matter how low you set the thermostat, or an AC system that runs nonstop. Extra humidity and frost on the coils are also red flags. Catching these clues early lets you schedule a quick cleaning before the system overworks itself and triggers an expensive breakdown.

Your AC cleaning technician starts by shutting off the power to the unit and removing the faceplate. Compressed air and a vacuum hose blast away loose debris, followed by a coil-safe, no-rinse cleaner that dissolves stubborn grime. After the solution has soaked in, the professional wipes the fins, reassembles the housing, and restores power, leaving the system ready to cool at peak efficiency.

The Louisville, OH homeowners’ guide to central a/c service or repairs

From average costs to expert advice, get all the answers you need to get your job done.