The main cores of our business are commercial mechanical contracting, commercial plumbing and HVACR service, and preventative ... maintenance. We build and maintain high quality systems that are long-lived and highly-efficient providing an excellent return-on-investment and low energy costs. Our Mission To provide the best value HVACR and mechanical systems installation and service, principally in the mid-market commercial industrial and institutional sectors, while caring for our customers, employees and the environment. Our Philosophy We believe that by providing our customers with quality, efficient and maintainable systems for their capital investments and then providing excellent service and preventative maintenance, we are doing our best for our customers and the environment. This approach has resulted in excellent referral business from past and existing customers. History Granite State Plumbing & Heating, LLC was founded by Gerry Perron and incorporated in April of 1983 in the State of New Hampshire. From 1990 through 2005, GSPH was purchased by a series of increasing larger companies and is currently a wholly owned subsidiary of Comfort Systems USA which is headquartered in Houston, TX. CSUSA is publicly traded on the NYSE under the symbol FIX. Comfort Systems USA Being part of a much larger entity leverages our talents and resources so we can provide a much broader range of technical expertise and service than otherwise possible. It provides for greater financial strength and purchasing leverage by centralizing certain functions – information technology, marketing, fleet purchasing agreements, etc. We are able to partner with sister companies to provide support for widespread geographical projects and programs. read more