Doyle Mechanical Systems, LLC is an HVAC contractor located in Charlotte, NC that services all of Charlotte & the surrounding areas within a 50 mile radius. We strive to surpass the competitors in our quality of service and work ethic, as well as to build strong relationships with our clients.

We’ve been in business since 2015. We strive to ensure absolute consistency in our work ethic and quality of service to the customer.

On any service that we perform, the customer receives a follow-up phone call within a few days to confirm that the system is functioning properly, as well as to ensure that the client is fully satisfied. Only technicians with consistently good reports from our customers may continue to work for us.

Our technicians also undergo strict testing prior to hire in order to prove their experience, and must pass a work history and background check. We only hire the best who can prove their abilities to do the job with honesty and integrity.

We offer the following commercial and residential services:

Give us the opportunity to be your company for heating, air conditioning and commercial refrigeration.


The team was very efficient, responsive and professional. The finished the job on time and did exceptional work installing a new hvac unit. Would highly recommend!

Jodi V.

Fixed issue with the fan running continuously in the air handler .

Trent K.

I have a unique hydronic heating system. Several of the big competitors wouldn’t even work on my system. Several others couldn’t figure out the problem. I was ready to just give up. The owner and his partner Will showed up and fixed the heating issue within an hour. They stayed and made sure the job was done!!!

Jeffrey T.

Shannon and his entire team deserve a 10 star rating. Do yourself a favor and stop looking for other HVAC contractors. I hired DMS to diagnose a couple issues with the furnace and the A/C that were found during a home inspection. Shannon and his team evaluated the two issues as part of their overall diagnostic of the HVAC system. I also had DMS perform a couple preventive maintenance repairs on the HVAC since I was selling the home. DMS completed all the work on the same day at a very fair price. Shannon and his entire team are professional, courteous, and detailed. I will recommend DMS to all my family and friends.

Michael W.

They did a great job.


My AC stopped working after a couple of short power outages. I suspected all I needed to do was to “reboot” the system somehow, but after several unsuccessful trials, I called my home warranty company. They sent someone in the next day, and the guys said my blow motor and capacitor need to be replaced – which would cost me ~$700. Not having AC in min Sept in Charlotte is not fun, but I decided to get a 2nd opinion and I’m so glad I did so. I picked a few high rating pros here to get a quote and DMS was the first to respond, so I gave them a try. Mike from DMS came in the “reboot” the AC in 10min. Mike also showed me how to do so in events like this in the future. Late that day, I was a little bit concerned that my house is not cooling down as fast as expected and called DMS. They sent Mike back again the same day and he is a very thorough check of my AC system and confirmed that everything was fine — just that it will take longer to cool down a house w/o AC for several days. Mike called me back the next day again just to check in and see if everything is fine. Don’t know what else I can ask for here. Five stars.

Zwick T.

Leave a Review