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Cox's Old Colony Heating, Air Conditioning & Plumbing is a trusted provider of HVAC installation, repair, and maintenance services in Hanover, MA, and the surrounding South Shore area. For over 75 years, they have been dedicated to providing exceptional comfort solutions to homeowners and businesses, including indoor air quality improvements, sheet metal fabrication, and plumbing services. Their team of licensed, insured, and background-checked technicians is committed to ensuring the highest level of comfort and satisfaction for their customers.