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Air Conditioning Repair Service

Dor-Mar Heating and Air Conditioning provides expertly trained and certified technicians to perform fast and reliable repairs to residential or commercial air conditioning systems. We service all major brands, providing A/C repairs, heat pump repairs, central air conditioning repairs, and we serve the entire Central Ohio area from Columbus to Zanesville.

Fast, Reliable Air Conditioning Repairs from Dor-Mar

In Central Ohio, the summers get hot, sometimes reaching temperatures of 100 degrees or higher. More often, temperatures stay in the 80’s and 90’s for weeks at a time during the summer, stressing your home’s cooling system. It seems like those “dog days” of summer arrive earlier and stay with us later every year, and this year appears to be no exception.

On these hot, muggy Ohio days, when you’re looking for a fast air conditioner repair, it’s imperative that you have an AC Repair Service you can trust to perform those needed repairs reliably, quickly and affordably.

Dor-Mar Heating and Air Conditioning is the solution, with more than 40 employees and dozens of fully-equipped service vans just waiting to service your air conditioning repair needs. We have been providing A/C repairs in Central Ohio since 1962.


CAPTION? If your air conditioning system has issues, it might seem like they don’t need to be taken care of right away. If you’re A/C is making a lot of noise, or switching on and off more frequently than it should, that could be the sign of a larger problem looming. It’s your best bet to have even what you may think are small issues checked out as soon as possible. Not only will it keep your air conditioning working at peak efficiency, keeping your family cool and comfortable, it may prevent your system from having a catastrophic failure.

EPA Certified Air Conditioning Service Technicians

Each and every one of our AC service technicians is certified to handle air conditioning repairs by the Environmental Protection Agency (EPA), a requirement of the federal government. Our service techs will ensure that your air conditioning system is functioning properly and is running at peak efficiency.

Our team’s AC repair expertise includes all major makes and models of central air conditioning and heat pump systems. Whether your AC equipment is old or new, if you’re looking for a minor or major repair, routine maintenance, or a complete replacement, Dor-Mar Heating and Air Conditioning is the company to call.

Air Conditioning Repair Types

We can perform repairs on many types of air conditioning systems or A/C parts, including:

  • Air Conditioning Repairs
  • Heat Pump Repairs
  • Ductless AC Systems
  • High Velocity AC Systems
  • Central Air Conditioning units
  • Compressor Repairs
  • Freon or Puron coolant leak repairs
  • Emergency A/C repairs
  • Air Conditioning Zoning
  • A/C Tune-Ups and routine maintenance

Dor-Mar Heating and Air Conditioning’s expert team of EPA-certified technicians drive fully stocked vans, allowing them to repair all makes and models of air conditioning equipment quickly, often in one trip or same day.

Air Conditioning Brands We Service and Repair

  • Amana
  • American Standard
  • Bryant
  • Carrier
  • Coleman
  • Comfortmaker
  • Goodman
  • Heil
  • Honeywell
  • Janitrol
  • Lennox
  • Mitsubishi
  • Rheem
  • Ruud
  • Sanyo
  • Trane
  • York
  • …and many more!
Air Conditioning Repair Services
Call Dor-Mar Heating and Air Conditioning today for your central air conditioning repair needs.

Fast Air Conditioning Repairs from EPA-Certified and Trained Experts

Our AC service technicians receive both manufacturer and on-the-job training and continuous re-training to ensure they keep up with any changes in the industry, and keep their skills sharp. Your air conditioning repairs are only a quick phone call away, with quick dispatching by our team of skilled customer service representatives. Chances are, one of our team may already be in your neighborhood.

Emergency Air Conditioning Repairs and Service

There is never a “good” time during the cooling season to be without a working central air conditioning system, but it’s worse when the outdoor temperatures are high. What’s worse, is arriving home from a long day at work to a hot, stuffy house with no relief in sight! That’s a common situation, where your AC runs non-stop at peak capacity all day when the temperatures are highest, only to fail during your work day. Obviously, if something goes awry, there’s nobody home to notice. Then you have the challenge of finding someone that can come to your home quickly to get the AC system running again. Same day, quick-response is no problem for Dor-Mar heating and Air Conditioning. Our friendly customer service team mans the phones 24 hours a day, seven days a week, just waiting for your call.

Trained, Certified, Licensed and Insured AC Repair Service

Air Conditioning systems are, in a word: complicated, and require training and expertise to diagnose and repair. Our highly trained and certified service technicians are the answer to your AC repair needs! In their capable hands, your comfort is assured in a short time by our technicians, who receive recurring training in the classroom and in the field. We are licensed in Ohio to perform both residential and commercial Air Conditioning repairs, and we carry all insurance as mandated by state law. Rest assured we can handle your every AC repair need.

Criminal Background Checks, Substance Abuse Testing, and Home Protection

If you’re like me, you want to know that a stranger entering your home is trustworthy, especially with your family present. To ensure that, we require service technicians to pass a criminal background check and we perform drug screening tests. To protect your home from dirt and damage, we require our AC service technicians to wear protective foot coverings and cover their work areas with dropcloths. During the COVID-19 Coronavirus outbreak, our techs also wear protective surgical masks to ensure the safety of both our customers and our team.

Dor-Mar Heating and Air Conditioning has served Central Ohio since 1962. Our Google reviews rating averages 4.7 with more than 1,000 reviews across all our locations.

Dor-Mar Heating and Air Conditioning AC Repair Services include central air conditioning repairs, heat pump repairs, and A/C system repairs.

A/C System Refrigerant/Coolant Repairs

One of the most common problems we see on our customers’ air conditioning systems is a refrigerant leak. All modern air conditioners use a form of coolant to perform its work, whether it’s the now-phased-out Freon/R-22 refrigerant, or its replacement Puron/R-410a.

Refrigerants are unique liquids that convert to a gas in pressurized, closed system air conditioners, releases cold as it passes through your A/C system, then absorbs heat and converts back into a liquid, only to repeat that process over and over. Because the refrigerant is under pressure, and the system contains many plumbing-style connections, the coolant can sometimes develop a leak over time.

Our A/C repair technicians use the most advanced industry practices and equipment to locate refrigerant leaks quickly, and repair the AC system. Even a small, seemingly insignificant refrigerant leak can cause energy loss, as well as reduce efficiency of the A/C system, sometimes to the point where it doesn’t do its job at all.

In addition, the leak of R-22 from older air conditioners poses a threat to the environment, so leaks should be dealt with quickly and efficiently. Dor-Mar Heating and Air Conditioning AC Service Technicians are highly-trained and EPA-certified to handle even the most complex coolant leaks.

Heat Pump Repairs

A Heat Pump is a system that resembles a traditional air conditioner, and even works in a similar fashion. During the warmer outside temperatures of the summer, a heat pump extracts cool air from warm air and transfers it to the inside of your home, lowering the indoor temperature. During the winter months, a heat pump has the ability to extract heat from cold air to provide heat to your home. Unfortunately, Ohio winters tend to be too cold to heat a home with just a heat pump, so they are often installed in conjunction with electric furnaces, as a supplement, and can provide an energy-efficient boost. Our expertise fully extends to heat pump and electric furnace systems. If it seems your heat pump isn’t cooling your home properly, contact our friendly, helpful customer service representatives to schedule a service call to check it out.

A/C Compressor Repairs

The “heart” of a central air conditioning system is the compressor, which pumps refrigerant from the outdoor unit to the indoor unit, providing cool relief to the people inside your home.

If the compressor isn’t doing its job properly, the air conditioning system simply won’t cool your home. Compressors contain many mechanical parts and electrical connections and require a trained AC service technician to diagnose and repair them properly. And, since many compressor repairs require proper handling of the compressed refrigerant inside the system, a AC Repair technician must be EPA-certified. At Dor-Mar Heating and Air Conditioning, all of our AC Service techs hold EPA certification and thorough training to deal with compressor issues.

Air Conditioning Repair Services
Contact Dor-Mar Heating and Air Conditioning today for same-day emergency air conditioning repairs. We offer A/C Service done right!

Common Air Conditioning Repairs

Your home’s air conditioning system contains many moving parts, electronic and mechanical components, leaving the door open for a multitude of problems. Our certified, highly-trained AC Service technicians see several problems more frequently, indicating that certain sections of an air conditioner may be more susceptible to everyday wear and tear. No matter the issue, it’s important to call our friendly, helpful customer service team for professional expertise from Dor-Mar Heating and Air Conditioning.

Here are some of the common repairs our specialists see during their A/C Repair visits.

A/C Compressor Issues

As mentioned earlier, the compressor performs the most important function of an air conditioner, pressurizing the refrigerant so that it can capture the heat inside and transfer it outside. This is the hardest-working component on the air conditioner, and runs constantly when the system is running. The complex compressor can have complex motor or electrical issues, as well as develop leaks, so an EPA certified technician is the only person who can legitimately perform any needed repairs.

A/C or Furnace Fan Problems

A home’s central air conditioner has two fans. First, the evaporator fan, also called the blower; and the condenser fan located in the outdoor unit. The condenser fan helps remove heat from the system, while the blower pushes the cool air into the ductwork of the home. Common fan problems that can develop are loose or bent fan blades, motor problems, or drive belt issues.

Freon or Puron Refrigerant Leaks

A home air conditioning system contains a system of tubing, called the lineset, that transports the refrigerant through the system. Because the lineset may be installed with multiple plumbing-like connections, it may develop leaks. In addition, linesets are made with malleable, soft metals like copper tubing and brass fittings, and can develop tiny holes when bent or rubbed repeatedly. The US EPS requires anyone handling refrigerant to be trained and certified to properly capture coolant. And since the contents of the system are pressurized, the A/C Service Technician must be properly trained to handle it. A/C Technicians from Dor-Mar Heating and Air Conditioning are well-trained, and re-trained, as well as certified, to properly deal with coolant issues on an air conditioning system.

Call Dor-Mar Heating and Air Conditioning for Fast, Reliable AC Repairs

If your home’s air conditioner is experiencing any of these issues and needs a repair, contact the friendly, helpful customer service team at Dor-Mar Heating and Air Conditioning for a same-day service call.

  • Family-Owned and Operated
  • In Operation Since 1962
  • Servicing All of Central Ohio from Columbus to Zanesville and Beyond
  • 40+ Highly Trained and Certified Employees
  • Fully-Stocked AC Service Vehicles
  • Same-Day Emergency A/C Service
  • Highly Rated on Google And Other Review Sites
  • 24/7 Customer Service Available to Answer Your Phone Calls

Why Choose Dor-Mar Heating and Air Conditioning for A/C Repairs?

Dor-Mar Heating and Air Conditioning has been serving Newark, Zanesville, and Columbus, Ohio and the surrounding areas since 1962. Starting out as a small door-to-door company, Dor-Mar has grown to be one of the largest heating and cooling service companies in Ohio.

Dor-Mar is family owned and operated; we hold our employees to the highest standards to ensure we provide our customers with the best HVAC service possible. We currently have more than 40 employees, all who are passionate about taking care of our customers’ needs. Our employees attend regular training, ensuring we keep up with the ever-changing HVAC field. As a result of our hard work and honesty, Rheem & Coleman has recently recognized us as a “ Top Team Contractor.” We offer free estimates on new equipment, and provide customers with 24-hour service.

We pride ourselves on providing exceptional customer service for all makes and models of heating and cooling equipment.

Call us to schedule a service appointment or for a free, no-obligation consultation to determine the perfect system for your home or business. We look forward to hearing from you and adding you to our long list of satisfied customers.

We offer same day no heat no cooling service/repair in Newark, Zanesville, and Columbus and surrounding suburbs. Call TODAY for service TODAY… or use our convenient online appointment request form below.

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We look forward to serving your family’s air conditioning repair and service needs!

Central Ohio Full-Service AC Repair Service

When your home’s air conditioning stops working during the heat of the summer, many homeowners immediately turn to the internet to find a company to fix the problem. That’s how you found us! In central Ohio, you know there are literally hundreds of options. When you call us for any AC problem, you’ll get affordable, quick, expert service you need from the leader in residential air conditioning services.

That’s our mission, and our promise to you, and we stake our reputation on it.

Highest-rated air conditioning contractor

Highest-Rated AC Repair Service in Central Ohio

Knowing when to call is important, but knowing WHO to call when you need the best is also extremely important. Dor-Mar has been serving Central Ohio since 1962, including Zanesville, Newark, and Columbus and all of the surrounding suburbs. We have worked hard to service our customers, and our online reviews show it.

As an experienced AC contractor, we recommend you have your systems checked and routine maintenance performed twice per year, once in the Spring (before cooling season) and once in the Fall (before heating season). It goes without saying the safety and comfort of your family or office staff are important factors. Keeping what is probably the most expensive and important system in your home (heating and cooling) properly maintained will help keep your biggest investment of your life (your home) in good shape.

Dor-Mar…Your Climate Hero!




HVAC customer service in Newark, Ohio | Dor-Mar Heating & Air Conditioning

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HVAC customer service in Newark, Ohio | Dor-Mar Heating & Air Conditioning


Our Comittment to Your Family’s Health & Safety

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