Repair, replacement, and preventative maintenance to keep you warm all winter long.
Heating Services...


API of NH / Delta T is the company your friends and neighbors call to keep cool all summer.
Cooling Services...


From routine service to emergency repairs to sales and installation.
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Good maintenance is a key part of getting the most value for your energy dollar.
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API of NH / Delta T - Furnace & Air Conditioning HVAC Repair and Service

Meeting all of your Heating and Cooling Needs

From routine repairs and maintenance to expert equipment installation and replacement, API of NH / Delta T is prepared to meet all of your heating and cooling needs. Give us a call at (888) 641-8404 to discuss your furnace, heater, air conditioning, and other comfort concerns.

We're Proud To Serve These Areas:

  • New Hampshire
  • Massachusetts
  • Rhode Island
  • Manchester, NH
  • Portsmouth, NH
  • Bridgewater, MA
  • Waltham, MA
  • Chelmsford, MA
  • Franklin, MA
  • Providence, RI
  • and more!
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