RTH Mechanical Contractors Inc Projects

We proudly serve a variety of commercial industries.

We’ve had the opportunity to work on many different types of commercial and industrial projects throughout the years. Below you will find general information and pictures of projects we are currently bidding, projects that are in progress, and projects we have worked on in the past.

PNSY Building 177

Project Estimator: Ron Reed

Bid Date: March 5, 2020

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Current Projects


Portsmouth Naval Shipyard

  • R-22 HVAC Replacement & Controls Upgrade
  • P-266 Structural Shops Consolidation
  • Building 96, SEWS Relocation
  • Building 72, PRV Repairs
  • Buildings 153, 170, & 337 Renovations, DLA
  • Building 76, Interior Renovations
  • Building 291, Energy Upgrades & Repairs

Medical Centers

  • Dartmouth Hitchcock Medical Center, Palliative & Hospice Care, Lebanon NH
  • Dartmouth Hitchcock Medical Center Data Center, Chiller HVAC & Plumbing, Lebanon NH
  • VA Medical Center, Flood Repairs, Manchester NH

State of New Hampshire

  • Concord Hospital, Design-Build Steam Conversion
  • Department of Justice, Legislative Building
  • Dolloff Spaulding M&S, Steam Conversion
  • Steam Conversion, State House, Annex & Library

Air Force Base

  • Pease AFB, Site 8
  • Hanscom AFB, Building 1712
  • Boston ARTCC ACEPS II Install, FAA, Nashua, NH
  • New Boston Air Force Station, S-Band Antenna Civil Works

School Systems

  • St Paul’s School, Concord NH
  • Rochester School System, Rochester NH
  • The University of New Hampshire, Durham NH


  • Hanover Inn, Hanover NH
  • The Flume Visitor Center Renovations, Lincoln NH
  • Mount Washington Hotel, Bretton Woods NH
  • Cleveland-Rudman Steam Conversion, Concord NH

Past Projects


Portsmouth Naval Shipyard

  • Building 174, Plumbing & HVAC Waterfront Support Facility
  • Building 92, Energy Improvements & Repairs
  • Building 55, Energy & Repairs
  • Building 163, Water Tower Pump House
  • Buildings 375 & 337 Energy Repairs

Bath Iron Works


  • Southern Maine Medical Center, Augusta ME
  • VA Medical Center Togus, Augusta ME
  • Burlington Court House, Burlington VT
  • Cape Cod Air Force Station, Sagamore MA
  • Littleton Post Office, Littleton NH
  • FAA, Nashua NH
  • Fairpoint Communications

Contact us today!

17 Production Drive
Dover NH 03820
Questions/Emergency Service
(For Service Agreement Customers ONLY)


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