Nelson Mechanical Design Martha's Vineyard Green Contractor
  Daikin Altherma Air to Water Heat Pump Project, W. Tis
  Contractor of the Year Award
  Harmon Pellet Powered Boilers & Furnaces
  Geo-balls land in West Tisbury
  Mansion House cover story in GMC
  2010 Year End NEWSLETTER
  Mansion House Goes Green with Geothermal
  NMD National Award
  Daikin Altherma Heat Pumps
  ENV Remote Home Control
  LEED for Homes Residence
  Net Zero Home, Longview
  Net Zero Home, W. Tisbury
  Geothermal Heat Pumps
  Air to Water Heat Pumps
  Air to Air Heat Pumps
  Solar Thermal
The NMD Testing Lab
Twenty Panel Solar Hot Water
Atria Restaurant Solar
Geothermal / Solar Hybrid
Ocean-front Geothermal Concept
Pond-Based Geothermal Concept
  Residential
  Commercial
  Hot Water Heating
  AquaPex
  Clivus Composting Toilets
  Custom Plumbing Solutions
  Fixtures
  Hot Water Boilers
  Radiant Floor Heating
  Radiant Panels & Towel Warmers
  Hydro Air Systems
  Multi Aqua Systems
  Ducted Systems
  Ductless Systems
  Ductless Multi Aqua Heating and Cooling
  Fresh Air Exchange
  Indoor Air Quality
Schematics and Specs
CAD Drawings and Design
MV Wind Energy Info Site
Copyright ©2005-2012
Nelson Mechanical Design
All rights reserved.
Nelson Mechanical Design is Martha's Vineyard's "green" mechanical contractor
providing both renewable and conventional heating, cooling, and plumbing systems.
Selected by Contractor Magazine as "2010 Contractor of the Year"
Want the best? You've found us: NMDGreen.
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NMD Spotlight & Island Green NEWS
Daikin Altherma Air to Water Heat Pump Pilot Project in West Tisbury

Ted Bayne and Lea Delacour
live on Martha's Vineyard in a 3,000 square foot home heated by radiant floors and a Viessmann propane boiler. Their goal was threefold – to find a heating source that would make their existing 90% efficient heating system more economical to run, would not involve destroying their extensive gardens with a geothermal installation, and would use electricity to operate – making their home ready for the “all-electric” island that Martha's Vineyard will become in the near future.

Until the arrival of the Daikin Altherma, there was no realistic or cost effective way to meet these goals. The Daikin Altherma provides geothermal levels of efficiency at a much reduced installation cost and can operate all winter long. They contacted Nelson Mechanical Design (NMD) to design, engineer, and install an innovative heating system that would meet their three goals. NMD recommended the Daikin Altherma as the solution that uses electricity, operates at geothermal efficiency levels of 200 to 400%, has a tiny outside footprint, and heats water for the home's radiant floors and domestic hot water system.

Read more, schematics, plans, etc. are here!
Contractor Mag's 2010 Contractor of the Year
Contractor of the Year Award

Nelson Mechanical Design, Inc. (NMD) was recently selected "2010 Contractor of the Year" in a national survey by the Penton Media Group, a publishing firm that serves 50,000 mechanical contractors across the United States.

Penton publishes CONTRACTOR Magazine, Green Mechanical Contractor, Radiant Living, and Heating, Plumbing, and Air Conditioning Engineering. This national award is recognition for NMD's work this year on several "green" mechanical projects across the Vineyard, according to a press release.

For the rest of this article in the December 2010 issue of Contractor Magazine please click here. More also here: "Tough Customers need to save energy, too"

Green Mechanical Contractor Cover article

NMD's work at the Mansion House is the cover story in the latest issue of Green Mechanical Contracting. Bob Mader, Editor-in-Chief, described NMD as "a perfect combination of technical know-how and a creative mindset.”

Nelson Mechanical Design’s work on the Mansion House – converting groundwater issues into “geothermal gold”, reducing the carbon footprint through advanced controls, and helping the hotel become the “greenest hotel in Massachusetts” is the focus of the Winter 2010 issue of Green Mechanical Contractor.

Full text of article is here.
NMD introduces Harmon Pellet-powered Boilers, Furnaces, Stoves
NMD is proud to expand its "green" heating solutions to now include pellet stoves, boilers, and furnaces made by Harmon. NMD's Dave Sprague recently completed factory training in the installation of these Harmon "green" heating devices. The local Harmon showroom is at Pyewackets (135 Beach Rd, Vineyard Haven, MA 02568, 508-696-7766).

The burning of pellets made from wood chips in these boilers, furnaces, and stoves is carbon neutral as the trees that become pellets have already absorbed a significant amount of carbon dioxide. The Harmon boilers and furnaces are an ideal new construction and retrofit solution to hot water or forced air heat. They feature automatic pellet loading and operation via conventional thermostats.

The Harmon boiler, furnace, and the Harmon stove offer a viable alternative to fossil fuel heating systems.
NMD & Geo-Balls Invade West Tisbury!
Nelson Mechanical Design, Inc. is pleased to announce the arrival of “Geo-Balls” on Martha’s Vineyard. A “Geo-Ball” is an innovative approach to geothermal installations – when used in a horizontal geothermal field, a “Geo-Ball” reduces excavation costs by up to 30% compared to a conventional geothermal field.

(David Sprague and Bill Healy stand next to "geo-balls".) Each “Geo-Ball” consists of 1000’ of ¾” plastic pipe that is configured in a “slinkee” fashion that shrinks its length to 130’. Manufactured in Bristol, NY, each “Geo-Ball” is shipped in its spherical form and unrolled on the site into a trench 6’ deep, 3’ wide, and 130’ long.

This winter, NMD will install 6 “Geo-Balls” at the West Tisbury residence of Libby and David Fielder. The use of “Geo-Balls” effectively shrinks the size of the geothermal field so that it easily fits within the permitted construction area, ensures uniform heat transfer between each of the loops, and reduces excavation and landscaping costs.

Inside the residence, geothermal heat pumps connected to the outside geothermal field will use the stored solar energy in the earth to heat and cool the residence. NMD projects operating costs for this residence will be between 40 and 50% less than a similarly sized home heated with fossil fuels.

Who We Are and What We Do
We design and install systems for: plumbing, heating, air conditioning, solar systems, geothermal systems, mechanical design, engineering, software modeling, and analysis.

NMD has been in business on the island for over five years designing and installing high quality mechanical systems.

Nelson Mechanical Design, Inc. (NMD): NMD is Martha's Vineyard and Nantucket's "green" mechanical contractor, designing and installing geothermal, solar thermal, heat pump, and conventional HVAC systems, plumbing, and control systems. They designed and installed the mechanical systems for the Vineyard’s first two LEED for Homes residences. Several of their projects have won national awards; they were awarded 1st place in “Most Innovative Green Design” and 2nd place in “Best Residential Green Design” in the 2009 nationwide Green Mechanical Awards held at GreenBuild 2009 in Phoenix, AZ. Their solar hot water systems include the island’s largest residential solar hot water system (20 panels) and the first and only commercial solar hot water installation (Atria Restaurant). They have received state and federal funding to conduct wind turbine feasibility studies on two island farms as part of their “Massachusetts Electric Farm Model”.
Principals:

David Sprague is a Master Plumber licensed in Massachusetts, an Accredited Installer (geothermal), a member of IGSHPA and a Geothermal Pipe Fusion Welder.

Brian Nelson is a Master Plumber licensed in Massachusetts, is working on his Certified GeoDesign license, and has a Masters Degree in Mechanical Engineering. He is not a P.E. However, NMD does offer engineering services from licensed P.E.s. Brian is a full member of ASHRAE, AEE, GHPC, IGSHPA, and the RPA.

Learn more here, including what our customers say about our services.




David Sprague and Brian Nelson
E-mail Brian Nelson E-mail David E-mail Megan