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Plumbing and Hydronics

Plumbing and Hydronics

The Granite Group represents most of the leading plumbing and hydronic product lines available. We effectively support: residential, multi-unit and light commercial contractors. We offer and active training and promotional schedule including the hosting of a Summer Stock Up promotion in the spring and our own Trade Show Series in the fall.


  • Kohler
  • Oasis
  • Moen
  • Delta
  • Grohe
  • Gerber


  • IBC
  • Buderus
  • Weil McLain
  • Slant Fin
  • Taco
  • Grundfos


At The Granite Group, we are very proud of our HVAC Division, this division was opened in 2004 and has been very successful since its inception. We feature a full inventory of HVAC products including residential and commercial air conditioners, package units, condensing units, heat pumps, and gas and oil furnaces.


Our team of HVAC professionals can help you with specifying, estimating and installation of products. 


Our major products lines are:

  • Mitsubishi
  • Kohler Generators
  • Maytag
  • Gibson
  • Unico
  • First Company
  • Renewaire
  • Duc-Pac 

Our success has largely been due to our dealer support. The Granite Group’s training classes include everything from basic theory classes to CFC certification classes to live fire hands on two stage heating and cooing systems installation and troubleshooting. We also have a full time technical advisor / trainer, Kevan Mayer, who is available to our dealers for technical support either by phone or on the job site if needed. 

We support our dealers through our Dealer Program which includes things such as discounted training, technical assistance, marketing support, lead generation programs, discounted buying and dating programs and through our personal relationships that we create through factory visits and other events. 

The Granite Group has several buggy trucks that can make job site deliveries for rooftop orders or large residential projects at no charge, we also have our normal fleet of over 50 delivery trucks that are on the road every day. We can get product where you want, when you want it. 

Propane Gas - Products and Accessories

Propane Gas - Products and Accessories

The Granite Group offers a variety of equipment, parts and supplies to the residential and light commercial liquid Propane distributor and authorized gas installers. We distribute best in class products and truly partner with our vendors to ensure you the fastest support available. Our staff works incredibly hard to provide our customers with all aspects of training and recognize the constantly changing market. We are members of PGANE, Maine Energy Markets Association & Vermont Fuel Dealers Association to support their ongoing efforts to making Propane business better for all of us.

Institutional Property Management

Institutional Property Management

Sourcing Experts for Facilities, Institutions and Property Managers.

Offering Expertise and Inventory of:

  • Large Diameter Pipe, Valves & Fittings
  • Energy Audits / Engineering High Efficiency Systems for any size projects:
    • Steam
    • Gas
    • Oil
  • Currently serving Institutions & Facility Managers throughout New England:
    • Hospitals
    • Facilities
    • Property Managers
    • Commercial Space Owners

The IPM Advantage:

  • 190,000 sq. ft. Distribution Center in Londonderry, NH
  • World Class Product Lines
  • Daily Material Shuttle to every Granite Group Location in New England
  • Price Protection / Contract Negotiation
  • Versed in both RFP and Blanket PO processes
  • Vendor Managed Inventory Programs: My Granite Access (coming soon),
  • My Stockroom and OrderPad
  • Certified HVAC Trainer on Staff
  • Regular Lunch & Learn opportunities for your employees
Commercial Sales

Commercial Sales

Centralized Commercial Dept. offering detailed competitive quotations and design build recommendations. Unique services include: jobsite delivery by buggy truck as well as grooving, threading and cutting of various pipe materials to length.

The Ultimate Bath Store

New England's Premier Bath & Kitchen Center and the exclusive showroom of The Granite Group. Our beautiful Stores are a display resource for both contractors and homeowners offering the chance to create the ideal bath or kitchen in a stress-free environment surrounded by the best brands and people in the industry.