API of NH hosts more than 200,000 square feet of warehouse space so we can bring you more than 10,000 SKUs, including residential and light-commercial forced air equipment from 1.5 to 30 tons and boilers up to 6 million BTUs.

Take advantage of regular offers for special pricing or call one of our support specialists out to your jobsite for engineering assistance. Do you have a particularly tricky fit? Use our sheet metal shop for custom ductwork that will make your difficult project easy.


Get the best deals of the season, only available for a limited time. Click on each special below for more details.


We’re more than just a supply house. Count on us as a partner to grow your business. Our industry-leading equipment, parts and supplies ensure you’ll be able to get what you need, when you need it.

Our dealers enjoy a competitive edge with factory rebates, consumer financing, extended warranties, free accessories and more. Not only that, but our internal marketing experts can help you create ads and marketing collateral to keep you top-of-mind with existing customers, while generating new leads for ongoing success.


API of NH provides engineering support to drive your profitability. We believe true sales support comes through engineering assistance. That’s why we are ready to help light-commercial customers with product information, application assistance, plan review, and project management and specs – all with exceptional turnaround time on quotes. We’ll support your product needs, from light-commercial units up to 25 tons to rooftop unit replacements using curb adapters.

Ask about our pre-sale design support for ductless, geothermal, hydronics and VRF applications. We’ll help with equipment recommendations, suggested applications and innovative solutions for challenging situations.



Between airborne viruses, allergies and wildfire smoke, indoor air quality has become a top concern for many HVAC customers. Learn more about the ways you can help your customers improve quality, energy costs and comfort.

From air purification systems to smart thermostats, we offer a range of solutions to regulate air quality for consumers. Select the product that’s right for your job with IAQ options from trusted manufacturers, including:

AprilAire - The full line of AprilAire whole-home humidifiers includes solutions for any application.

CASPR – This no-touch system is easily installed in your existing HVAC system, making it an affordable air disinfectant that lowers pathogens for a healthier space.

FanTech – This whole-house system filters mold spores, cooking odors, pet dander, dust and dust mites.

General Filters – Reduce allergy and asthma symptoms with a system that uses opti-fiber media to capture particulates.

Nu-Calgon – Featuring the world’s first self-cleaning design, this bipolar ionization generating system reduces allergens, odors, smoke, static electricity and more.

RGF - A range of products from RGF will provide cleaner air using low-maintenance, REME-HALO technology.

Ultravation – This ultraviolet disinfectant option, featuring a high-efficiency but silent design, is ideal for hospitals and institutions.




Since 1987, API of NH has provided custom residential and commercial ductwork for your unique spaces. We will manufacture spiral, square or round ductwork to your specification. We also offer welded stainless steel and aluminum galvanized steel products for greater durability.

Our 20,000-square-foot sheet metal operation has the knowledge and experience to provide quality products that fit your unique needs.

With full coil lines, along with multiple cybermation and spiral machines, our Manchester and Eliot sheet metal operations will provide the custom quality product you need with reduced lead time.

Call (800) 628-2157 to place your order or contact our Sheet Metal Shop staff:


Jonathan Gilberti
Manufacturing Manager

Bobbi-Sue Lauder
Sheet Metal Shop Sales

Kyle Boulanger
Sheet Metal Shop Sales

Sheet Metal