J.M. Service Company is a commercial Air Conditioning and Heating service company headquartered in Braintree, MA. Founded in 2000, the company has grown in both size and reputation with expansive capabilities across all facets of the HVAC industry. JMS and its dedicated service team prides itself in providing the most effective and efficient solutions for its clients while offering industry leading service and response. With a focus on Relationships and Service, JMS has built an excellent reputation among its loyal customer base. Our responsive Sales & Service team along with our 20+ highly trained technicians provide the Expertise and Capability to solve all of your heating and air conditioning needs.