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

Why Choose Dor-Mar?

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 Since 1962

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.

"It was so great to talk to Cindy in my time of crisis. 😉 She scheduled someone to be out to my house on the same day as my call, even during this busy season of AC repairs. She made sure I was informed of all the details and benefits of their call-out service including annual inspections on my AC, furnace, and water heaters. It adds real value to the call-out fee. In a separate review, I rated Garett who took care of my AC repair, but I also want to recognize Alexandria who received and addressed a simple follow-up question I had. Well-done all around and thank you all!"
Chris S.
"I wanted to wait on writing my review until our journey with Dor Mar was complete. Brian helped us first, evaluating an old furnace + AC unit at a home we recently purchased. He gave us an honest assessment of our options (repair vs replace,) and we went with a new system. He gave us good advice and helped us choose a system that was right for our budget and home. Matt and Steve removed the old system and installed the new. Like Brian, they were incredibly courteous and professional. Both were knowledgeable and helped teach me about the new system. Brandon came out a week, or so, after the installation to do a quality check of the new system. He was also incredibly helpful and offered sound tips on air flow and balancing it in order to heat/cool our home evenly. Everyone I've spoken to over the phone has also been courteous and knowledgeable. I'd recommend Dor Mar to anyone in need of heating/cooling help!"
Sean G.
"Brian was great! He called before coming to our house, very courteous, asking if 20 minutes was enough time. Arrived within time stated and took time to acknowledge/ pet our dogs, making them feel comfortable. He then went on to explain what he was doing, walked me thru the process as he went along and even waited to check results of his fix. He suggested a few extra services but was not pushy. Overall pleasant experience!"
Laken A.

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 5.0 out of 5 stars based on 3 customer reviews

Map of Zanesville, OH

Fast, efficient service!!

Review of Dor-Mar Heating & Air Conditioning

Map of Zanesville, OH

Great service, very professional

Review of Dor-Mar Heating & Air Conditioning

Brian came out to the house the same day I called. Very professional and was able to fix our air conditioner problem. Very much appreciated.

Map of Zanesville, OH

Awesome service!

Review of Dor-Mar Heating & Air Conditioning

Cindy S.

Cindy S.

I scheduled a service call for a new customer having issues with the air conditioner in their Zanesville, Ohio home.

Near Winton Ave, Zanesville, OH 43701
April S.

April S.

Scheduled final inspection on her new Goodman air conditioner

Near Harding Rd, Zanesville, OH 43701
Brian M.

Brian M.

Installed a Nest thermostat in Zanesville Ohio

Near Rankin Dr, Zanesville, OH 43701
alexandria S.

alexandria S.

scheduled yearly maintenance

Near Leonard Ave, Zanesville, OH 43701
April S.

April S.

scheduled final inspection on their Goodman furnace

Near Lewis Dr, Zanesville, OH 43701
April S.

April S.

scheduled a service call

Near Baker St, Zanesville, OH 43701
alexandria S.

alexandria S.

service call

Near Cedarhurst Dr, Zanesville, OH 43701
April S.

April S.

scheduled final inspection on his newly installed air conditioner

Near Dresden Rd, Zanesville, OH 43701
Cindy S.

Cindy S.

I scheduled a service call for a new customer needing our assistance on his air conditioner in his Zanesville, Ohio home

Near Norwood Blvd, Zanesville, OH 43701
Matthew C.

Matthew C.

Replaced AC

Near Eva Cir, Zanesville, OH 43701