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
HVAC Routine Maintenance Agreements
HVAC Maintenance
Radon Gas Remediation
RADON Gas Remediation

Why Choose Dor-Mar Zanesville
Furnace A/C Repair & Service?

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

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

Serving Zanesville Ohio (and Muskingum County) 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 earned a track record as Zanesville Ohio’s most reliable, credible HVAC contractor. With locations and service technicians provided throughout the metro Columbus, Newark and Zanesville areas, we bring friendly, family-oriented service to your home, oftentimes the same day.

Beginning as a small door-to-door contractor, our family owned and operated establishment has grown to one of the leading heating and cooling service companies in Ohio. We hold our employees to the highest standards to provide our customers with the greatest HVAC service possible. Our 30+ employees are passionate about taking care of your needs in the fastest, friendliest, most efficient way possible. Our service technicians, installers, customer service representatives, office personnel and supervisors attend frequent training, ensuring we stay in front of updates in the ever-changing HVAC field.
Due to our effort and dedication to customer service, Rheem & Coleman recently recognized us as a “Top Team Contractor.” Our company provides free estimates on replacement equipment, and provide customers with 24-hour service.

Call Dor-Mar Heating & Air Conditioning to schedule 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, regardless of size.

We eagerly anticipate adding you to our long list of delighted Zanesville-area customers.

Rheem heating and cooling products

See What Our Happy Customers Are Saying…

We've been satisfying loyal customers since 1962.

Brian was our tech today. I had the best experience while he tested our heating system. He explained everything he was doing so that even I could understand. He gave all possible options so that we could choose which best suited us and our needs. He wasn’t pushy and didn’t try to up-sell us something we didn’t need or want. We will definitely come to this company for all of our HVAC needs and will request Brian if he’s available.
Nastalsia C
Dor-Mar was great called in the AM and they were able to come out that day. Brian the technician that came out was very professional and friendly. He was able to identify and confirm the problem. He promptly resolved my issue and our air was back to normal!
Kyle B.
Recently had an air conditioner go belly up on 4 of the hottest days starting on Memorial Day. We called Dor-Mar the night before and a technician Wes arrived first thing on Memorial Day. Wes did all he could then delivered the bad news, but fortunately he was very knowledgeable with helping us choose a new system. We were so pleased that we decided to add on a new furnace as well at the same time. Dor-Mar also was kind enough to deliver a portable air conditioner to us to get us by for the 3 days for install. Doug and Tyler arrived on Thursday and I was very impressed with them. Not only were they kind and considerate Doug was so knowledgeable on the equipment he answered every question we had and left us feeling very confident with our install with new Rheem equipment. Very happy customer.
Kris 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 Zanesville, OH

Dor-Mar Heating & Air Conditioning Rated 4.9 out of 5 stars based on 47 customer reviews

Map of Zanesville, OH 43701

Great service

Review of Dor-Mar Heating & Air Conditioning

Our tech did a great job

ZanesvilleOH43701 39.995-81.9225

Map of Zanesville, OH 43701

Thanks for cleaning my dryer vent!

Review of Dor-Mar Heating & Air Conditioning

Caleb is friendly and attentive to detail. I am glad to have clean dryer vents. He did a great job with the cleaning and was very thorough in making sure the flex hose had no leaks. The appointment overall took a bit longer than expected due to some confusion with what I wanted. He said he was new to estimates so he wasn't familiar with everything that needed to be done.

ZanesvilleOH43701 40-82

Map of Zanesville, OH 43701

Excellent service.

Review of Dor-Mar Heating & Air Conditioning

Caleb did and excellent job. He was very courteous and friendly and explained how he was going to clean the ducts and registers. Caleb was very careful working around our furniture. He took his time and did a great job Caleb gave us plenty of advanced notice when he was going to be here. We were glad we got this service George and Rhoda Antrim

ZanesvilleOH43701 39.9625-81.9575

Map of Zanesville, OH 43701


Review of Dor-Mar Heating & Air Conditioning

Our service tech. was great and very knowledgeable. Very polite. Explained everything.

ZanesvilleOH43701 39.9575-82.115

Map of Zanesville, OH 43701

Excellent service

Review of Dor-Mar Heating & Air Conditioning

Ryan and Ty E did very good job

ZanesvilleOH43701 39.9675-82

Map of Zanesville, OH 43701

Pleased with service!

Review of Dor-Mar Heating & Air Conditioning

The service was excellent. Ryan was very pleasant. He was very quick to answer all questions. I was impressed with Ryan and Ty.

ZanesvilleOH43701 39.98-81.995

Map of Zanesville, OH 43701

Friendly and efficient!

Review of Dor-Mar Heating & Air Conditioning

Chris and Ryan arrived bright and early this morning. They dove right in and installed our new furnace. They were very professional and "dog friendly", too! We are very pleased with their service. Thank you!

ZanesvilleOH43701 39.9675-82.1475

Map of Zanesville, OH 43701

Excellent service

Review of Dor-Mar Heating & Air Conditioning

David Atha was very professional and explained every questions we asked. A+

ZanesvilleOH43701 39.9925-82.0025

Map of Zanesville, OH 43701

Excellent, honest service!

Review of Dor-Mar Heating & Air Conditioning

I contacted Dor Mar via email and had a technician here within 12 hours for a regular service call. Doug was very efficient and kind. Excellent communication about what he was finding and how he could fix it. He was very honest about everything and put safety as his primary concern. He was able to find the problem and fix it quickly.

ZanesvilleOH43701 39.89-82.06

Map of Zanesville, OH 43701

Furnace gas valve replacement

Review of Dor-Mar Heating & Air Conditioning

Great service, great support, great tech. Will use this company in the future for my heating/cooling needs.

ZanesvilleOH43701 39.8975-82.0075

Cindy S.

Cindy S.

I scheduled a plumbing maintenance for Zanesville Ohio

Near Greengold Dr, Zanesville, OH 43701
Cindy S.

Cindy S.

I scheduled a duct cleaning for Zanesville Ohio

Near Greengold Dr, Zanesville, OH 43701
Skyler  C.

Skyler C.

I scheduled the customer's yearly plumbing maintenance.

Near Dori Ln, Zanesville, OH 43701
Skyler  C.

Skyler C.

I scheduled the customer's yearly plumbing maintenance.

Near Pine Valley Dr, Zanesville, OH 43701
Cindy S.

Cindy S.

I scheduled a duct cleaning for Zanesville Ohio

Near Boggs Rd, Zanesville, OH 43701
Cindy S.

Cindy S.

I scheduled a duct cleaning for Zanesville Ohio

Near Boggs Rd, Zanesville, OH 43701
Caleb L.

Caleb L.

Air duct cleaning

Near Pinkerton Ln, Zanesville, OH 43701
Caleb L.

Caleb L.

Dustin Wilson

Near Spring Valley Rd, Zanesville, OH 43701
Caleb L.

Caleb L.

Air duct cleaning

Near Rosewood Dr, Zanesville, OH 43701
David A.

David A.

Furnace Diagnosis

Near Adamsville Rd, Zanesville, OH 43701


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.