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Cosby Heating & Cooling

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Air Conditioning

AC installation requires highly-skilled trained experts to ensure efficient cooling. Cosby Heating & Cooling is a leader in AC installation and other HVAC services in Mt. Vernon, OH.


Do you need reliable heating repair in Mt. Vernon? Call Cosby Heating & Cooling today for flexible heating repair appointments and professional service.

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Geothermal HVAC systems have shown to be the most efficient way to save money on energy costs while also providing environmentally friendly benefits to homeowners.
Will Robison
Will Robison
June 10, 2024
5 stars are not enough to praise their work. john came to our house in marengo. he went far above my expectations. he performed a thorough inspection of our hvac unit. his inspection found no problems. he did rewire/install (updating to the new nec electrical code) a new on/off switch to the furnace. complete with 2 new junction boxes, flex conduit, etc.
yolanda davis
yolanda davis
June 8, 2024
I had such good and timely service. I will certainly use use your service in the future. Thank you so much. Yolanda
Tony Mundy
Tony Mundy
June 4, 2024
Very happy with my experience with Cosby, and would definitely recommend them to anyone. Our service tech Paul was friendly, communicated well and did a great job.
June 2, 2024
timely, informed, polite, effective
Judy McCracken
Judy McCracken
May 31, 2024
Levi was very considerate and conscientious of my home. He did a thorough check of my system. He informed me of the status and updated me during his visit. Cosby provides knowledgable and courteous technicians.
Kathy Wantland
Kathy Wantland
May 31, 2024
Levi Steele was very professional and answered all my questions, he was courteous.
Andrea Oquin
Andrea Oquin
May 31, 2024
Levi Steele did a great job today . He serviced our furnace and air conditioner. He was punctual, polite, and not pushy.
Megan Keller
Megan Keller
May 30, 2024
We are new to the area and when we unexpectedly needed help with our A/C, Cosby was able to help fairly quick considering it was the first week of warm weather and a holiday weekend. John our technician was friendly and professional. He clearly explained the fix for our problem and the cost was reasonable. Overall, we were satisfied with the work completed and would use them again (if ever needed, hopefully not, lol).

Top HVAC Company Mt. Vernon, OH

Cosby Heating & Cooling, in Mt. Vernon Ohio, is committed to providing affordable home heating and cooling solutions. We help serve the people of Knox County and the surrounding areas with highly-skilled technicians who can troubleshoot, diagnose, and recommend what’s best for you based on your individual needs. You can count on Cosby Heating & Cooling to provide you with a system solution that fits your home and your family’s needs. Whether your goals are energy efficiency, reducing your monthly energy bill, addressing allergies, dust or irritants in the air, or having a great system with affordable monthly payments, we are here to serve you. We’ve got a reputation for being thorough in solving problems and installing reliable well-manufactured systems in the area. We’re your one-stop shop for heating and cooling needs. “Make Your Home A Cosby Home!”

Why Cosby Heating & Cooling?

We have a team of HVAC technicians and specialists certified and trained in heating and air conditioning. We can guarantee you a smooth-running system with our services and product installations all year long. We do not stop at your installation.

We provide emergency services with a team eager to serve you. Our response time is quick. Our trucks are fully-stocked and ready to go. When our service technician arrives at your home, they will explain all of your options before starting repairs so you can make informed decisions before any work begins.

Having comfort in your home or business is necessary for your family. Installing the proper heating and cooling system from our HVAC company here in Mt. Vernon, Ohio, will help keep your family comfortable and limit unnecessary energy consumption costs. By choosing Cosby Heating & Cooling, we guarantee you:

Help with selecting an energy-efficient heating and air conditioning system that meets your comfort preference and lifestyle.

No cost consultations from the comfort of your home with one of our HVAC technicians.

Proper sizing of the equipment to meet the unique needs of your home.

Full factory warranties on all equipment and labor.

A convenient way to pay for your installation through our flexible financing options, subject to credit approval.

Emergency Services Available.

Upgrade and Replacement

Our HVAC technicians provide you with relevant consultation services that help determine the state of your system. Checking the underlying problem helps define the next step regarding your air conditioning or heating equipment. Investing in our seasonal maintenance plans and having system tune-ups is the key to having a reliable HVAC system.

We provide you with reliable products to choose from to cut down ongoing energy costs. We also deliver indoor air quality solutions to improve the air quality in your home that your family may breathe.


Reliable & Dependable

service tech installing a new ac unit
2023 Top10 Cosby
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Service Agreements

The extreme weather conditions in our area are detrimental to your cooling and heating system. They will eventually break down over several years of wear and tear without proper care. Our Cosby Heating & Cooling team will help you maximize your HVAC system’s life expectancy by providing regular check-ups. We even offer annual service agreements that include:

Two performance tune-ups per year – Performing routine maintenance twice a year on your system helps keep your unit running as efficiently as possible. These check-ups also allow our HVAC technicians to halt certain problems such as burnt or loose wires and freon leaks.
10% off repair labor – Our discounted rates save you money with every service call. Our repair trucks are fully-stocked, allowing us to repair 99% of calls on the first visit.
Unit purchase discounts – If or when it’s time for a new energy-efficient unit, we offer a $50 per year replacement equipment credit accrued on an annual basis if you keep continual coverage up to a $500 credit.
10% off replacement parts – You may not need to replace the entire unit, just certain parts. With our annual service agreement, you save on replacement parts.
Labor warranty – We offer a 90 day no diagnostic fee after a maintenance check has been performed. We stand behind our work.
Energy-saving coil cleaning – Dirty coils reduce the efficiency of your system and may force your HVAC system to overwork. Dirty coils can lead to a shorter life expectancy that may affect your utility bill.

At Cosby Heating & Cooling, we are known for our servicers’ capability and professionalism. We deliver the best solutions that fit each unique need and do it promptly. Some of the services available to our Mt. Vernon, OH customers include but are not limited to:

  • Preventive maintenance
  • New installation of needed systems
  • Repair services
  • Metal sheet fabrication
  • Indoor air quality
  • Duct sealing
  • Annual service agreements
  • Water heater replacement

Call us today and “Make Your Home A Cosby Home!”

Barb & Paul Eddy with cat

Barb & Paul Eddy, Owners 

Proud To Be A Part Of

Preventative Maintenance

Knowing your air conditioning and heating system are running efficiently year-round can provide you with peace of mind. The Smart Choice Maintenance plans can extend the life of your HVAC systems. It can even help by lowering your utility costs.

It’s everyone’s goal to have an efficient and reliable HVAC system that keeps you warm during winter and cool during summer. No one wants to be caught by surprise with a broken system. Regular maintenance should be at the top of your list to avoid costly repairs and after-hour headaches.

Regular maintenance with Cosby Heating & Cooling will:

  • Reduce utility bills. A poorly maintained HVAC system results in higher energy bills. If the system is faulty, it consumes a lot of energy to try and warm or cool your home or business.
  • Provide long-lasting equipment. Regular maintenance will help to maximize the life expectancy of your system.
  • Provide a more comfortable indoor environment. Indoor air quality is vital, especially if the home or business premise has an individual with breathing difficulties.

Our Technicians Are Ready

We Proudly Service Knox County and Surrounding Areas

  • Bellville, OH
  • Butler, OH
  • Centerburg, OH
  • Coshocton, OH
  • Danville, OH