Diamond Mechanical Installs

  • Boilers
  • Central AC
  • Dehumidifier
  • Furnaces
  • Heat Pumps
  • Humidifier
  • Mini Splits
  • Modine Heaters
  • Oil Tanks
  • Sump Pumps
  • Thermostats
  • Water Filtration
  • Water Heaters
  • Well Tanks






Efficiency that makes a world of difference

Are you considering an entirely new HVAC system? We will come to your home or business for a free consultation to consider your specific needs. With over a decade of industry experience in the Exeter, Portsmouth & Brentwood, NH areas, our team is ready and able to advise you on which products will give you the best bang for your buck.

By choosing Diamond Mechanical as your HVAC company, you will:

  • Receive unbeatable advice and quality customer service
  • Have access to emergency repair services any time of day
  • Enjoy a high-quality heating system installation for a fair price
  • Support a local company that has strong ties to the community

Contact us for a free consultation on heating services for your home or business in Exeter, Portsmouth or Brentwood, NH.