Since our inception back in 1969, API of NH & Delta T has prided itself on delivering not only quality services you can depend on but also the best value in heating and cooling products.

This philosophy combined with our belief that our products should be and are sold exclusively through professional heating and cooling contractors has helped us grow into an industry leader throughout New England area. We are proud that Rheem Manufacturing selected API of NH as the Master Distributor of its premier HVAC product lines and is now distributed to many of our professional contractors.

At API of NH, we’re facing the energy challenges of the future head on. We’ve taken the lead in providing our customers with the most energy efficient product lines on the market today. From Hydronic Heating to Geothermal, and now into Solar Power. These units use less electricity during both the heating and cooling months, and saves money year after year.

 API of NH is also an exclusive distributor in the Hydronic Heating Industry. With quality product lines from companies like Rehau, Viessmann, Lochinvar, Basis, and many others. These systems use cross-linked (PEX) tubing and are commonly installed under floors, walls or ceilings. These systems can also be used in snow and ice melting applications.

 API of NH is able to serve a broad range of customer needs, from heating and A/C units for residences to commercial rooftop, HVAC systems for mini-malls, restaurants and other commercial establishments. As many of our satisfied customers have come to know, API of NH offers a partnership, developing innovative programs and business solutions to help our customers grow and prosper.