Mass State Plumbing Heating and AC

Mass State Plumbing, Heating & Air Conditioning is a Hanson-based HVAC and plumbing contractor that has been operating on the South Shore for decades, according to its BBB profile (46 years in business, incorporated in 2004, alternate name EUSA Heating & Air Conditioning Services). Its BBB page carries an A+ grade. The written record online is thin. The one visible complaint on its BBB profile alleges the company did not honor a manufacturer warranty on a previously installed heating system, leaving part of the customer's home without heat. Separately, two web mentions -- one on Nextdoor, one on a heating directory -- describe positive furnace and boiler installations, though neither gives much detail. The company's website lists a Master Plumbers license number, which has not been verified against the state registry. Before booking, it's worth asking directly how the company handles warranty claims on installed equipment, since that's the one documented complaint on file.