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Massachusetts Geothermal is a Medfield, MA heating and cooling business that installs geothermal heat pump systems, and its website says it offers free estimates. In a 2025 Google review, a customer in the Brookline, MA area said they compared multiple quotes before hiring Martin to upgrade their HVAC system from oil to geothermal. Martin walked through every detail of the system and answered every question; installation lasted about 2 weeks and was completed in early November 2024. After the first heating season, that customer said the system had saved thousands of dollars in heating and was free of the air source heat pump noise. Another 2025 Google review described replacing an oil heating system and A/C with a heat pump system. Martin explained geothermal benefits compared to air-source heat pumps and walked them through the State and Federal tax advantages; the net cost was comparable to air-source quotes and $30K less than another geothermal quote. They called Martin and his crew friendly, and said the system, in for a year, was running quietly and saving money. In a 2023 Google review, a customer said the geothermal system Marty installed was turned on 4 months after the first phone call, the process went exactly as he laid it out, and the cost was exactly what was quoted. That review said his teams did a quality job, especially with all new ductwork in a challenging attic space. In another 2023 Google review, a customer who installed geothermal in 2020 said Martin helped explain all the incentives available, the heating and cooling system had been running smoothly, and their energy usage had dropped dramatically.
Typical Greater Boston range for this kind of work, from regional averages — not a quote from Massachusetts Geothermal. 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
Highly recommended, great guys!
We were looking to replace our oil heating system and A/C with a heat pump system. Martin took the time to help explain geothermal heat pump benefits compared to air-source heat pumps, and also walked us through the State and Federal tax advantages. The net-cost was comparable to air-source heat pump quotes we received and was even $30K less than another geothermal quote we received! Martin and his crew were friendly, and earned our trust quickly. The system has been in a year now and is running quietly and saving us money.
I compared multiple quotes around Brookline, MA area and finally engaged Martin to upgrade my HVAC system from Oil to Geothermal. Martin is professional, patient and walked thru every detail of the system with me answering all question I had. Installation lasted about 2 weeks iirc and was completed early November, 2024. I held my review until I experienced the first heating season. Based on electrical bills, the system saved me thousands of dollars in heating, and is free of the air source heat pump noise. The system is reliable and has no issues at all. If you are looking to upgrade your HVAC, give Martin a call.
From the initial phone call, Marty took the time to fully understand our current and future plans and explain what system would work best for us. No other companies we reached out to took the time to dig into our specific situation and instead gave us quick quotes at higher prices booking 10 months out. Marty’s knowledge and depth of experience was really evident, and he was willing to walk through all our questions, including about the various financial incentives available. 4 months after the initial phone call, we turned on our geothermal system installed by Marty and Mass geothermal. The process was exactly as laid out by Marty, and the cost was exactly what we were quoted. His teams were knowledgable, efficient, courteous, and did a really quality job, especially with all new ductwork in a challenging attic space. A big project like this is stressful and intimidating, but with Marty at the helm, the disruption to our family was minimized. We couldn’t be happier with how things went.
Martin is a gem. I had inquired going Geothermal in 2018 and stayed in touch with him until I was ready to install 2020. Very thorough and patience, goes above and behind. Helped explain all the incentives available. Heating/Cooling system has been running smoothly & my energy usage has dropped dramatically. Don't ever have to worry about filling an oil tank ever again.
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3 changes recorded — last scanned Sep 27, 2026.
Handles complex retrofits5.0
26 years in business2.8