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Typical Greater Boston range for this kind of work, from regional averages — not a quote from HIM Mechanical Systems, Inc.. 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
H.I.M. Mechanical Systems has been running HVAC and refrigeration jobs out of Bridgewater since 1974. It handles residential heating and air conditioning alongside commercial kitchen refrigeration and ventilation, and says it serves Bridgewater, Canton, Franklin, Plymouth, Sharon, North Attleborough, Wareham, Weymouth, Easton and Brockton. One Google reviewer has stuck with the company for almost 27 years, since it installed the original system in their house, and says the techs are always thorough and on time. A 2026 review calls the service prompt and adds that the crew works with my prices if needed. Another, from 2024, describes a technician named Jim who took his time explaining how everything worked, which mattered to a newer homeowner still learning the system. Its Massachusetts HVAC license is active and registered to the company itself. It offers free estimates and 24-hour emergency service. A strong call for routine maintenance or an HVAC emergency alike, especially for anyone who wants a company that sticks around — confirm current pricing for your specific service area when booking.
Always prompt service … works with my prices if needed and great customer service
We have used H I M for almost 27 years for our heating and cooling needs. They installed our original system when our house was built. The techs are always so nice thorough and on time. Any issues we have ever had have been taken care of quickly. We have had both the ac and heating systems replaced and of course we used these guys again. I would not use anyone else
Great Service always very through. Highly Recommend they Check everything and both my office and my home are running more efficently due to their attention to detail. We have been a long term customer and they are fantastic to work with.
Our experience H.I.M Mechanical Services for the past 2 days has been amazing. From the prompt, courteous, and professional first call, to the follow up call, and then through to the end of the completed service, we were impressed! The options were fully explained to our homeowner client, and the work was completed promptly and efficiently. As a result, we were able to move our transaction forward and all parties were happy! Thank you, Thank you!
Jim was awesome! He did a great job installing our thermostat, and he took his time explaining how everything worked. As a newer home owner, I really appreciated that Jim went out of his way to explain how everything worked with our HVAC system, and gave us recommendations for how to maintain and improve the systems. I look forward to working with him again and would recommend him to anyone needing HVAC service
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1 change recorded — last scanned Sep 18, 2026.
No-surprise, reasonable pricing4.5
AC/furnace replacement3.4