Dor-Mar Heating & Air Conditioning | Central Ohio's Most Reliable HVAC Company
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Heating and Air Conditioning Service Nearby

Air Conditioning Installation
Air Conditioning
Newark Heater Repair
Heat pump repair, replacement, installation
Heat Pumps
hot water tank installation
Water Heaters
Thermostat installation & Repair
air cleaner, indoor air quality
Air Cleaners
radon gas detection and mitigation
Radon Control

Why Choose Dor-Mar Westerville
Heating and Air Repair?

Since 1962, Our Customers Have Been Experiencing Our Fast, Friendly Service

Fair Pricing

You can be sure the price you're paying for repairs, maintenance or new equipment installation is a fair price in your local market.

24/7 Service

Our offices are open during regular business hours, but you will always speak to a real person if you have an after-hours no-air or no-heat emergency!

Qualified HVAC Experts

Our service technicians are NATE-certified and receive ongoing monthly training. You can count on getting the right answer for your heating and cooling questions.

Meet the Dor-Mar Team | Westerville Ohio Professional HVAC service technicians, installers and customer service representatives
Meet the Dor-Mar Team | Westerville Ohio Professional HVAC service technicians, installers and customer service representatives

Heating and Air Conditioning Service, Repair and Installation Services You Can Truly Depend On

Serving Westerville Ohio Since 1962

HVAC Contractor

Dor-Mar is one of the highest rated HVAC contractors in Central Ohio. In business since 1962, we consider our customers the most important part of our business, and it shows in our online ratings.

What does an HVAC Contractor  do?

An HVAC contractor is a business whose service technicians are tasked with installing, maintaining, and repairing heating, ventilation and air conditioning systems. In the state of Ohio, a professional license is required for a company to perform these services. Learn More About HVAC Contractors

Heating Contractor

One of our primary services is to serve Central Ohio’s needs as a Heating Contractor. The job of a heating contractor is to install, repair and maintain heaters, ventilation systems, and air conditioners. This includes associated equipment like ductwork, thermostats, furnaces, heat pumps and boilers. Some heating contractors offer additional services like performing energy audits, cleaning ductwork, installing indoor air quality equipment, or sealing ductwork.

The Best Heating Contractor Keeps Your Family Comfortable

If your heating equipment breaks, or is in need of any type of maintenance, repair, or replacement, a heating contractor is the right professional to reach out to. Find out more about Heating Contractors

Heating Equipment Supplier

In addition to maintaining and repairing heating equipment, furnaces and heat pumps, Dor-Mar offers replacement equipment. When it’s time to replace your heating equipment, it’s just as important to choose the right equipment supplier or installer as it is to choose brand, BTU, efficiency, and other elements of your system. If you are spending money to repair a heater that’s more than 10 years old, it might make more sense to replace it with a new, more energy-efficient furnace. Undoubtedly, the new system will use less energy simply because newer units include improved technology. Central Ohio’s Top Heating Equipment Supplier

Furnace Repair Service

Dor-Mar Heating and Air Conditioning is an award-winning Furnace Repair Service in business since 1962. We’ve been providing professional, timely heater repair and maintenance services to central Ohio since 1962. Our certified and highly-trained furnace technicians are ready and available around the clock to quickly respond to your lack of working heat. Our goal is to get your family back to comfort as quickly as possible.

24/7 Furnace Repair Availability

Our expert HVAC team is available during regular business hours, all night/every night, on weekends, evenings, and holidays, to provide quick access to the area’s top furnace repair service at a reasonable cost. Get Expert Furnace Repair Service

Fast, Reliable Air Conditioning Repair Service

Dor-Mar Heating and Air Conditioning provides expertly trained and EPA-certified technicians to perform fast and reliable repairs to residential and/or commercial air conditioning systems. We service all major brands, providing A/C repairs, heat pump repairs, and central air conditioning repairs.

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

  • Air Conditioning Repairs
  • Emergency Air Conditioning Repairs and Service
  • 24/7 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

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. Find out more about Dor-Mar’s Cooling Repair Services. Get Expert Air Conditioning Repair Service.

Central Ohio’s Highest-Rated Air Conditioning Contractor

Air conditioning contractors install, repair, and maintain the central air conditioning equipment, ductwork, electrical equipment, and controls found in residential and commercial cooling systems.

Did you know that most consumers view online reviews as reliable as a personal recommendation? There are a number of review websites where you can read detailed descriptions of a particular homeowner’s experience. Often these sites also have a 1-to-5 star rating system. Look for a high review count (meaning the company has been around for a while or service a large number of customers) and a high average rating, no less than 4.5 stars. You can also see if the company is actively paying attention to, and responding to, consumer reviews.

Dor-Mar Heating and Air Conditioning has accumulated more than 1,000 reviews and has an average rating of 4.83 stars on Google. We make it a point to respond to every review, positive or (the rare) negative review. If something went wrong, we work to make it right.

Contact the most trusted Air Conditioning Contractor in the Central Ohio area.

Air Conditioner Installation and Replacement

As your old A/C system deteriorates with age, it must work much harder to cool the air inside your home. This means it’s necessary for it to consume more energy to deliver the desired temperature. When you consider this and the significant difference in the energy efficiency of current air conditioning systems versus those manufactured only 15 or 20 years ago, it’s easy to see how switching to a new, state-of-the-art system will represent substantial savings on your energy bills.

Installing a new air conditioning system is not a job for a weekend warrior. The installation must be completed in accordance with local and state building codes and following the manufacturer’s specifications in order to protect your warranty. The job demands a licensed and trained professional like the ones at Dor-Mar Heating & Air Conditioning.

Contact us for a free estimate for replacement air conditioning equipment.

About Dor-Mar

Dor-Mar Heating & Air Conditioning has attained a track record as Westerville’s most reputable, trustworthy HVAC contractor. With offices and service technicians available throughout the metro Columbus, Newark and Zanesville areas, we bring responsive, family-oriented service to your door, frequently the same day.

Starting out as a small door-to-door contractor, our family owned and operated enterprise has grown to one of the largest heating and cooling service companies in Ohio. We hold our employees to the highest standards to provide our customers with the very best HVAC service possible. Our 30+ employees are passionate about taking care of your needs in the fastest, friendliest, most efficient way conceivable. Our service technicians, installers, customer service representatives, office personnel and supervisors attend frequent training sessions, ensuring we stay in front of updates in the ever-changing HVAC industry.

As a result of our effort and devotion to customer service, Rheem & Coleman recently acknowledged us as a “Top Team Contractor.” We offer free estimates on brand-new equipment, and provide customers with 24-hour professional service.

Call Dor-Mar Heating & Air Conditioning to book a service appointment for your home’s air conditioner, heat pump or furnace, or for a free, no-obligation consultation to determine the perfect system for your home or business, despite of size.

We anticipate adding you to our long list of completely, positively satisfied customers in the Westerville, Ohio area.

Rheem heating and cooling products

See What Our Happy Customers Are Saying…

We've been satisfying loyal customers since 1962.

Cory Ryan is absolutely wonderful. He is kind and caring about any issues or questions I may have. You can tell that he enjoys his work and the results show his pride! He explains everything in a way that I can understand and is always courteous of time! He is fast but efficient! That is very important to me. I wish Cory could be my technician every time!! Thank you so much Cory!!
Ashley B.
Steven was able to come out a day after my capacitor and fan motor went out. He was able to get the unit up and running with parts stocked in his truck and got everything up and running in just a few hours. Really nice guy and was very helpful answering all my questions about A/C and how everything works.
Nicholas G.
Doug and Jeremy from Dor-Mar did an outstanding job. They worked tirelessly to remove our old (1960s era) HVAC system and install a brand new one. We’re so happy to have a working system again. They took care to ensure everything was done correctly and their attention to detail was impressive. They were meticulous during clean-up and we are thrilled with the result. They also took the time to teach me about the system and ensure I was 100% satisfied.
Megan S.

7 Locations

More offices mean we can dispatch one of our certified service technicians to your door quickly.

24/7 Service

Our offices are open during regular business hours, but you can reach our dispatch person 24/7. We are there when you need us!

Local Numbers

Never a toll call or long distance charge. Our phones and highly-qualified service techs work at YOUR location.

Local Reviews
for Westerville, OH

Dor-Mar Heating & Air Conditioning Rated 4.9 out of 5 stars based on 49 customer reviews

Map of Westerville, OH 43082

Absolutely Excellent

Review of Dor-Mar Heating & Air Conditioning

David was excellent. 15.5 Stars for sure. I have 3 boys and a dog at home and work from home. He was extremely informative. Very polite. And direct on what was needed and not needed in my home. Very impressed! I would want nobody else to check my home but David.

WestervilleOH43082 40.175-82.9525

Map of Westerville, OH 43081

Great attitude and knowledgeable service

Review of Dor-Mar Heating & Air Conditioning

As much as I hate the commercials the technician came over to do a standard service for winter. He pointed out issues that can be fixed now or later. He did a great job as he had a great attitude and was very knowledgeable.

WestervilleOH43081 40.115-82.9125

Map of Westerville, OH 43081

Great service!

Review of Dor-Mar Heating & Air Conditioning

Dave was the man. Helped me out a lot, and as able to answer all of the questions I had and made me feel at easy. 11/10 rating.

WestervilleOH43081 40.1025-82.91

Map of Westerville, OH 43081

Excellent Service!

Review of Dor-Mar Heating & Air Conditioning

Dave was absolutely excellent 👌! I would love to work with him going forward with the company!

WestervilleOH43081 40.095-82.92

Map of Westerville, OH 43081

Good Service

Review of Dor-Mar Heating & Air Conditioning

WestervilleOH43081 40.13-82.8475

Map of Westerville, OH 43081

Excellent service

Review of Dor-Mar Heating & Air Conditioning

WestervilleOH43081 40.085-82.9

Map of Westerville, OH 43082

Great people to work with!

Review of Dor-Mar Heating & Air Conditioning

Called on a Tuesday, had an appt on Wednesday and a new AC and furnace installed by Friday! Excellent customer service from start to finish!

WestervilleOH43082 40.1375-82.81

Map of Westerville, OH 43082

Excellent Service!

Review of Dor-Mar Heating & Air Conditioning

Dave Atha was very courteous and professional, and he was very helpful with all our questions.

WestervilleOH43082 40.145-82.905

Map of Westerville, OH 43081

Excellent work

Review of Dor-Mar Heating & Air Conditioning

Trent was awesome. Had me up and running in a short time. Will use again.

WestervilleOH43081 40.0825-82.88

Map of Westerville, OH 43082

Pleased with my service call.

Review of Dor-Mar Heating & Air Conditioning

Dave took the necessary time to adequately inspect my unit.

WestervilleOH43082 40.1525-82.91

David A.

David A.

Furnace Inspection

Near Lynette Pl S, Westerville, OH 43081
Caleb L.

Caleb L.

Air duct cleaning

Near Huber Village Blvd, Westerville, OH 43081
Douglass S.

Douglass S.

Install of 2 Rheem high efficiency furnaces

Near Dempsey Rd, Westerville, OH 43081
David A.

David A.

Furnace Mainten

Near Niagara Reserve Dr, Westerville, OH 43081
David A.

David A.

Furnace maintenance

Near McAlister Pl, Westerville, OH 43082
David A.

David A.

Furnace Maintenance

Near S Knox St, Westerville, OH 43081
David A.

David A.

Furnace parts Install

Near Executive Pkwy, Westerville, OH 43081
David A.

David A.

Air Handler Maintenance

Near Powderhorn Ln, Westerville, OH 43081
David A.

David A.

Furnace Maintenance

Near Sunlawn Dr, Westerville, OH 43081
David A.

David A.

Furnace Maintenance

Near Illinois Ave, Westerville, OH 43081


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

PLEASE NOTE: If you are a renter, please have your landlord/owner contact us directly to schedule service. We can only work with property owners.


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


Our Comittment to Your Family’s Health & Safety

Learn what we’re doing to keep you and your family, as well as our employees, safe from the spread of the virus as we service your heating and cooling needs.