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Typical your area range for this kind of work, from regional averages — not a quote from Mid-State Mechanical. Use it to sanity-check bids, then get the real number in writing.
Estimated range
$5,000 – $11,400
Typical HVAC project around $8,200
Mid-State Mechanical is a heating and cooling company that says it has been in business for 37 years, with a stated service area that includes Middletown, Meriden, Berlin and Wallingford. Its site lists furnaces, heat pumps, boilers, oil-to-gas conversions, air conditioning and ductless mini-splits. Its BBB grade is an A+, and it holds 4.8 stars from 33 Google ratings. A recent customer whose central AC compressor failed said they patiently answered questions about the options, moved quickly to get a new unit, and phoned customers with existing appointments to ask if they could move them so the new unit would be installed as fast as possible. A 2025 customer replacing a 35-year-old system said they interviewed four HVAC companies first, and that Mid-State installed a second zone and a two-stage system for less than others were quoting for a single-stage, single-zone system. A 2024 customer who had a new furnace and AC put in said Donna, one of the owners, handles transaction information and financing questions, and that Larry, her husband and owner, did the estimate. That 2024 customer said the installers arrived at 8:00 am and were done by 3:00 pm, and called the pricing very fair after comparing it with two other companies. A 2024 customer said their HVAC sits in a half-basement reached through a shoulder-width hatch in the floor, and that they took the new unit apart and rebuilt it in the basement to install it. That 2024 customer said the unit had run for 2 years since then. A 2023 customer said a service call on the heating and central AC found a 30-year-old boiler throwing deadly amounts of CO into the home, and that they then installed a new boiler. That 2023 customer said Donna scheduled the job within 5 business days of the first service. A 2023 customer hired them for a combi boiler installation and watched three men go straight to work. A 2022 customer said they responded immediately when the fan on a heating system broke, found a hard-to-find part, and fixed it in a day during a cold snap.
MidState Mechanical represents the very essence of the American dream. A family run operation that works hard, treats the customer with respect and looks out for the customer. We have been using MidState for years and knew that our central AC compressor would break down sooner rather than later; which it did the first week of July and needed to be replaced. They patiently answered all our questions and gave us a lot of feedback as to our options. Once we made a decision, they moved quickly to acquire a new unit and (on their own) called other customers with appointments inquiring if they could move their appointments so our new unit would be installed as fast as possible(doesn't this show how good of a relationship they have with their customers?). As I told the owner, I don't do surveys or reviews but for MidState Mechacnical I am happy to do so and strongly recommend them.
My HVAC system was 35 years old and I was in need of replacement for heating and air. I interviewed four HVAC companies before Midstate Mechanical. The four companies showed up with nice vehicles and fancy software but some couldn't answer simple questions like how many years of experience do your installers have, because I read that the installation is key to a successful HVAC system. To the rescue Midstate Mechanical. Very easy to work with, knowledgeable and with decades of experience. They were able to install a second zone and a two Stage system for less than the price that others were quoting for a single stage single zone. From the moment I met Larry my gut told me this was my guy. I am so happy with my decision. I feel corporations have lost touch with the consumer but not a family owned business such as Midstate Mechanical. Many thanks to Larry Matt and Donna. -John and Lynn
Mid-State Mechanical did a wonderful job getting my parents central air back up and running for a very fair price. They were punctual, polite, and professional. I cant thank them enough and will definitely recommend them in the future.
I just had Mid State Mechanical put in my new furnace and AC.I really thought this was going to be a big to do but this company couldn't have made it more pleasant. It started with Donna who is one of the owners and handles all your transaction information and is just wonderful to deal with. If you need to consider financing she is there to help you with all your questions. She actually made me want to do business with them because she was so terrific. Larry, her husband and owner came out to do the estimate and I knew immediately I felt comfortable with his knowledge and his obvious experience. As far as installing, both Matt Larry's son and Matt who help Larry install, were wonderful and really made this great experience. They arrived at 8:00 am and were don't by 3:00 pm. I am very happy with my new heat and air conditioning. So quiet and efficient. Also I want to mention that their pricing was very fair and I compared it to 2 other companies. Try this family owned business. I think you will be very satisfied as I am. Thank you Donna, Larry, Matt and Matt!!!
You don't know how valuable you guys are... Been thinking of you with these upcoming 90+ degree days. So pleased that we had Matt come out and do our yearly AC service that they installed over 12 years ago and still going Strong.... Midstate Mechanical is the BEST from their office personal to their technicians... Thank you Matt & Donna
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1 change recorded — last scanned Oct 14, 2026.
Oil tank replaced in just 4 hours5.0
BBB A+2.9