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Top-Rated Air conditioning pros in Mount Vernon - Updated Nov 2026

Avatar for MAD Heating and Cooling, LLC
MAD Heating and Cooling, LLC
5.0(
3
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Mount Vernon, OH and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

MAD Heating and Cooling is a locally owned and operated HVAC company serving Columbus and the surrounding Central Ohio communities. Our team specializes in residential heating, cooling, and indoor air quality solutions with a focus on honest service, reliable workmanship, and energy-efficient systems. \n \nWith years of experience in the HVAC industry through our parent company, McWilliams Mechanical, we bring professional expertise and commercial-level knowledge to every residential project. Whether you need a furnace repair, air conditioner replacement, heat pump installation, or routine maintenance, our technicians are committed to doing the job right the first time. \n \nServices include: \n? Furnace repair and replacement \n? Air conditioning repair and installation \n? Heat pump service and installation \n? Ductwork and airflow improvements \n? Seasonal maintenance and tune-ups \n? Indoor air quality solutions

Furnace Install
Carrier
11 neighbors recently requested a quote
JMSM Heating-Cooling-Cooking-Fountain-Refrigeration, LLC
4.8(
115
)
Central A/C - Service or RepairWindow A/C Unit - Service or Relocate

Serving Mount Vernon, OH and surrounding areas

Approved

Super Service Award Winner

In business since 2010

Warranties offered

Small jobs welcome

"Very thorough work was done to fix a fireplace where the pilot light wouldn’t light. Cleaned the entire fireplace which fixed the problem. Left the work area cleaned up. Would highly recommended!"
QUADFIRE PELLET STOVE
PEL PRO PP130 PELLET STOVE
Response time7 hrs
7 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Cosby Heating & Air Conditioning, LLC
Cosby Heating & Air Conditioning, LLC
5.0(
1
)
Central A/C - InstallDuctless Mini-split A/C - Install or Replace

Serving Mount Vernon, OH and surrounding areas

Approved

In business since 2008

Free estimates

Credit card accepted

We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job.

Response time1 day
1 neighbors recently requested a quote
Recommended by100%of homeowners
Homestead Air, LTD
5.0(
2
)
Central A/C - Service or Repair

Serving Mount Vernon, OH and surrounding areas

Approved

In business since 2016

Free estimates

Emergency services offered

"Keith came on a sweltering Saturday and knew exactly what to do. He had a long drive and I appreciate his taking the time to help us out! I thought his rates were reasonable and his knowledge of what to do outstanding. If I ever need help for other heating or cooling issues there is no one else I would think of calling."
2016 Project
2016 Project
2016 Project
Response time20 mins
Response rate100%
Recommended by100%of homeowners
Shane
New to Angi
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace+1 more

Serving Mount Vernon, OH and surrounding areas

Approved

HVAC technician with hands-on experience diagnosing, repairing, and maintaining residential and light commercial heating and cooling systems. Skilled in troubleshooting furnaces, air conditioners, heat pumps, and ventilation systems, with a strong focus on efficiency, reliability, and getting systems back up and running quickly. Multiple certifications including NATE.

Melissa Saimplice
New to Angi
Air Ducts & Vents - Clean

Serving Mount Vernon, OH and surrounding areas

Approved

Emergency services offered

Small jobs welcome

Credit card accepted

\nWelcome to our cleaning company! We are committed to providing reliable, high-quality cleaning services for homes and businesses. Our experienced and trustworthy team takes pride in delivering spotless results using professional techniques and attention to detail.\n\nWhether you need regular housekeeping, deep cleaning, office cleaning, move-in/move-out cleaning, or customized cleaning solutions, we tailor our services to meet your specific needs. We believe a clean environment promotes comfort, health, and productivity, and we strive to exceed our clients' expectations with every visit.\n\nCustomer satisfaction is our top priority. We are dedicated to delivering dependable service, flexible scheduling, and exceptional value. Let us take care of the cleaning so you can focus on what matters most.\n

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Air Conditioning FAQs, answered by experts

Evaporator coils in HVAC systems typically last around 10 to 15 years. However, their life span can be longer or shorter based on factors like the frequency of your HVAC system usage, whether regular maintenance is performed, and environmental conditions. Regular maintenance, such as HVAC system cleaning and coil inspection, can extend the durability and efficiency of your evaporator coil.

If refrigerant levels are low, it can cause the evaporator coil to freeze up. Low freon causes a drop in pressure, which will make the coil too cold and cause moisture to freeze on the coil. Your system may be low on refrigerant because of a leak. 

Make sure to have maintenance performed twice a year, and contact your local HVAC technician if you suspect your system has low freon levels.

Turn your system off when you're toasty or when you're out to prevent unnecessary wear. Using the timer on your thermostat so that it switches off when it reaches a certain temperature or turns on just before you get back from work is best. An annual maintenance contract can be helpful to ensure your system receives these important services at regular intervals.

The size window AC you need depends on the BTU and the size of the room you’re cooling. For a room with 8-foot ceilings, look for about 20 BTU per square foot of the room. For example, a 12-by-12-foot room should have an air conditioner with 2,880 BTU. You can buy something slightly more powerful, but don’t overshoot the BTU for a small room, or you’ll waste energy and have higher bills.

AC evaporator coils should be cleaned at least once per year to keep your unit in good condition. For optimal performance, consider cleaning them twice a year—once before and once after the main cooling season. More frequent cleanings may be necessary for older systems, units with performance issues, or those in climates with high levels of humidity, dust, and dirt.

The Mount Vernon, OH homeowners’ guide to air conditioning services

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