228 E Main St
Newark, OH 43055
740-345-6639

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Local Reviews
for thornville, oh

Rated 4.9 out of 5 stars based on 231 customer reviews

Short and sweet

I called Dor-Mar for a new heat pump installation and couldn't be happier with the results. The team that came out was professional, knowledgeable, and got the job done efficiently. The new system is working great. Thank you!

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Great job!

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Excellent Service

They arrive on time and let me know exactly what they did.

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Excellent service

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No humidifier filters on truck

Usually DorMar does a great job. But I was disappointed when the technician did not have humidifier filters on his truck and that I would have to pay for an additional service visit if I wanted him to come back and install two.

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Excellent service

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Excellent service

Very efficient. Courteous and very asked if had any questions.

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Knowledgeable technician

Caleb was able to come out and quickly troubleshoot our furnace. But left no stone unturned by even checking to see if there was wasps nest or something external causing the issue in order to no “shotgun parts”.

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Wonderful Service!

Aaron was amazing! Very knowledgeable, kind and willing to explain the system! Great technician and very efficient! Now we have a warm house! Thank Aaron and all the DorMar family!

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Perfect Service

Great communication, excellent comments for potential future maintenance items.

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Excellent service

On time, friendly and competent.

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Great service

Zach is great to work with!

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Great service

Very thorough and came on time (early)

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Excellent service

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Great Service

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Job Locations
for thornville, oh

Aaron C.

Aaron C. Job Checkin

I was called to a home to replace a failed ignitor and test the heating works. Upon arrival, I found that the ignitor was the cause of the heating issue. I replaced the ignitor and tested the heating works to ensure they were functioning properly. I also checked for any other potential issues and made the necessary repairs. The customer was happy with the results and thanked me for my help.

I was called to a home to replace a failed ignitor and test the heating works. Upon arrival, I found that the ignitor was the cause of the heating issue. I replaced the ignitor and tested the heating works to ensure they were functioning properly. I also checked for any other potential issues and made the necessary repairs. The customer was happy with the results and thanked me for my help. I was called to a home to replace a failed ignitor and test the heating works. Upon arrival, I found that the ignitor was the cause of the heating issue. I replaced the ignitor and tested the heating works to ensure they were functioning properly. I also checked for any other potential issues and made the necessary repairs. The customer was happy with the results and thanked me for my help.

Derrick B.

Derrick B. Job Checkin

I am a highly skilled home service professional. I recently completed a job where I replaced a thermostat for an HVAC system. The existing thermostat was fried, so I used one off of my van to get them by. The customer was not charged for the replacement thermostat.

I am a highly skilled home service professional. I recently completed a job where I replaced a thermostat for an HVAC system. The existing thermostat was fried, so I used one off of my van to get them by. The customer was not charged for the replacement thermostat. I am a highly skilled home service professional. I recently completed a job where I replaced a thermostat for an HVAC system. The existing thermostat was fried, so I used one off of my van to get them by. The customer was not charged for the replacement thermostat.

Cody T.

Cody T. Job Checkin

This is to install a new high efficiency heat pump, electric furnace, and heat pack. All parts and labor are included. Install all new ductwork in the open crawl space with all registers and boots included. Most of the flooring will be removed while there to make install of duct work easier. All electrical for systems included. Warranty- 10 years all parts

This is to install a new high efficiency heat pump, electric furnace, and heat pack. All parts and labor are included.
Install all new ductwork in the open crawl space with all registers and boots included. Most of the flooring will be removed while there to make install of duct work easier. All electrical for systems included.

Warranty- 10 years all parts This is to install a new high efficiency heat pump, electric furnace, and heat pack. All parts and labor are included.
Install all new ductwork in the open crawl space with all registers and boots included. Most of the flooring will be removed while there to make install of duct work easier. All electrical for systems included.

Warranty- 10 years all parts

Steven H.

Steven H. Job Checkin

I am a highly skilled home service professional. I recently completed a job installing a 18 seer modulating heat pump for heat and cool. The installation included running a wire with a disconnect outside, installing a new thermostat and low voltage wiring, and installing the heat pump to the current furnace and ducting. The job also qualified for a 30% federal energy efficiency tax credit. The installation was completed on 11/17/25, but the date was flexible. The warranty for the job is 10 years for all mechanical parts and 1 year for labor.

I am a highly skilled home service professional. I recently completed a job installing a 18 seer modulating heat pump for heat and cool. The installation included running a wire with a disconnect outside, installing a new thermostat and low voltage wiring, and installing the heat pump to the current furnace and ducting. The job also qualified for a 30% federal energy efficiency tax credit. The installation was completed on 11/17/25, but the date was flexible. The warranty for the job is 10 years for all mechanical parts and 1 year for labor. I am a highly skilled home service professional. I recently completed a job installing a 18 seer modulating heat pump for heat and cool. The installation included running a wire with a disconnect outside, installing a new thermostat and low voltage wiring, and installing the heat pump to the current furnace and ducting. The job also qualified for a 30% federal energy efficiency tax credit. The installation was completed on 11/17/25, but the date was flexible. The warranty for the job is 10 years for all mechanical parts and 1 year for labor.

Aaron C.

Aaron C. Job Checkin

The furnace was working properly at the time of the inspection. No issues were found during the inspection. The furnace was running smoothly and efficiently.

The furnace was working properly at the time of the inspection. No issues were found during the inspection. The furnace was running smoothly and efficiently. The furnace was working properly at the time of the inspection. No issues were found during the inspection. The furnace was running smoothly and efficiently.

Sha M.

Sha M. Job Checkin

Dryer vent cleaning on Custers Point Road in Thornville Ohio


Sha M.

Sha M. Job Checkin

Gas furnace maintenance on Newark Ave in Thornville Ohio


Zach S.

Zach S. Job Checkin

I was called to a home in the middle of the day to repair a broken air conditioner. Upon arrival, I found that the drain pump was clogged with debris and needed to be replaced. I removed the old pump and replaced it with a new one, ensuring that it was properly installed and connected. After completing the repair, I tested the air conditioner to ensure that it was working properly. The homeowner was very grateful for my quick and efficient service, and I was able to resolve the issue in a timely manner.


Aaron C.

Aaron C. Job Checkin

I was called to a home to repair a leaking 2-inch coupling. Upon arrival, I found that the fitting was leaking. I replaced the fitting and tested it. I found no leaks. I tested the coupling for any other leaks and found none. I then cleaned up the work area and left the home.


Zach S.

Zach S. Job Checkin

I was a professional who worked for a Dor-Mar Heating & Air Conditioning company. I was part of a team that installed a new heating and air conditioning system in a home. The job required two men to add a cap to the vent and secure it in place. The first step was to remove the old vent and clean the area. Then, we installed the new vent and secured it with screws. Finally, we tested the system to ensure it was working properly.

I was a professional who worked for a Dor-Mar Heating & Air Conditioning company. I was part of a team that installed a new heating and air conditioning system in a home. The job required two men to add a cap to the vent and secure it in place. The first step was to remove the old vent and clean the area. Then, we installed the new vent and secured it with screws. Finally, we tested the system to ensure it was working properly.

Aaron C.

Aaron C. Job Checkin

The electric air handler is working great. I have checked the electrical connections, cleaned the air filter, and tested the thermostat. The system is running smoothly and efficiently. I have also checked the refrigerant levels and found them to be within the manufacturer's specifications.

The electric air handler is working great. I have checked the electrical connections, cleaned the air filter, and tested the thermostat. The system is running smoothly and efficiently. I have also checked the refrigerant levels and found them to be within the manufacturer's specifications. The electric air handler is working great. I have checked the electrical connections, cleaned the air filter, and tested the thermostat. The system is running smoothly and efficiently. I have also checked the refrigerant levels and found them to be within the manufacturer's specifications.

Aaron C.

Aaron C. Job Checkin

I am a highly skilled home service professional who recently completed a furnace repair job for a customer. The furnace was working great, but the customer decided to upgrade to a new ecobee thermostat. I placed the order for the thermostat and did not charge the customer for the upgrade.

I am a highly skilled home service professional who recently completed a furnace repair job for a customer. The furnace was working great, but the customer decided to upgrade to a new ecobee thermostat. I placed the order for the thermostat and did not charge the customer for the upgrade. I am a highly skilled home service professional who recently completed a furnace repair job for a customer. The furnace was working great, but the customer decided to upgrade to a new ecobee thermostat. I placed the order for the thermostat and did not charge the customer for the upgrade.

Stacy S.

Stacy S. Job Checkin

Furnace maintenance in Thornville OH


Derrick B.

Derrick B. Job Checkin

I completed an estimate call for a client who was considering air conditioning options for their home. I walked through the client's home size and discussed the different types of air conditioners available. The client was sanding drywall and was unable to make a decision tonight. They stated that they would reach out tomorrow to follow up and discuss which decision would make the most sense for them.

I completed an estimate call for a client who was considering air conditioning options for their home. I walked through the client's home size and discussed the different types of air conditioners available. The client was sanding drywall and was unable to make a decision tonight. They stated that they would reach out tomorrow to follow up and discuss which decision would make the most sense for them. I completed an estimate call for a client who was considering air conditioning options for their home. I walked through the client's home size and discussed the different types of air conditioners available. The client was sanding drywall and was unable to make a decision tonight. They stated that they would reach out tomorrow to follow up and discuss which decision would make the most sense for them.

Stacy S.

Stacy S. Job Checkin

Furnace maintenance for Thornville Ohio