Breen & Sullivan Mechanical Services, is a MA Heating, Cooling, Plumbing, Air Conditioning, Geothermal Heat Pump, Ductless Mini-Split and Furnace repair, service, replacement and maintenance Company located in Essex County. Breen & Sullivan Mechanical Services employs only the best plumbers & technicians for plumbing repairs, air conditioner repairs, and furnace repairs as well as all air conditioner replacements, furnace replacements and boiler replacements in Danvers MA.