Granite State Plumbing & Heating is the premier design & installer of complete Commercial HVAC, Plumbing, and Refrigeration systems in New Hampshire.

Main Office: (603) 529-3322
Service Dept: (603) 529-3331


Get Commercial HVACR, Plumbing, and Process Systems Solutions for Your Business

Commercial systems design, installation and repair for the state of New Hampshire

Your commercial or industrial property relies on an intricate network of heating, air conditioning, plumbing, and refrigeration systems to operate. To equip your building in New Hampshire with efficient systems—and for commercial preventative maintenance services to keep them running efficiently—trust the experience and commitment to customer satisfaction you’ll get from Granite State Plumbing & Heating.

For over 30 years, Granite State Plumbing & Heating has provided business owners throughout New Hampshire with commercial mechanical contracting services and system maintenance solutions. We are New Hampshire’s most trusted company for commercial mechanical contracting, plumbing, and heating & air conditioning maintenance. Call today for commercial mechanical contracting services, HVAC, plumbing, and refrigeration maintenance that you can trust.

Constructing a new commercial building in New Hampshire?

Make us your Commercial Mechanical Contractor

Building an efficient facility is vital to the success of your business. Granite State Plumbing & Heating has over 30 years of experience with commercial construction services and can provide commercial solutions that are ideal for your new commercial structure.

Call (603)529-3322 today to have a local, established commercial mechanical contractor create and install efficient heating, cooling and plumbing systems for your business. Once you have a state-of-the-art system from Granite State Plumbing & Heating, trust our skilled technicians to provide reliable ongoing maintenance and repair services.

Time is money when your systems malfunction

Commercial refrigeration repairs

Whatever your needs for commercial refrigeration and cooling, you rely on these systems to work efficiently and reliably. When they malfunction, each passing minute can hinder production and damage inventory. Our skilled local technicians are standing by 24/7 to repair your commercial refrigeration equipment and other vital systems in your New Hampshire business. Call anytime at (603) 529-3331 for immediate commercial refrigeration services.

Ensure proper performance of your systems with scheduled Preventative Maintenance

HVAC, Refrigeration, and Backflow maintenance in New Hampshire

Avoid having to make an emergency repair call and keep your systems running efficiently year-round with maintenance services from Granite State Plumbing & Heating. We offer scheduled maintenance on HVAC, plumbing, and refrigeration systems that are vital to your New Hampshire business. Call today to learn more about our commercial system preventative maintenance programs (603) 529-3331.

Contact Us

  • Granite State Plumbing & Heating, LLC

    10 N. Riverdale Rd.
    Weare, NH 03281

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    Call Us
    Toll Free: (866) 540-1542
    Main Line: (603) 529-3322
    24/7 Service : (603) 529-3331