Nelson Mechanical Design Martha's Vineyard Green Contractor
  NEW! Contractor of the Year Award
  NEW! Daikin Altherma Pilot Project
  NEW! Harmon Pellet Powered Boilers & Furnaces
  NEW! Geo-balls land in West Tisbury
  NEW! Mansion House cover story in GMC
  NEW! 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
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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. We recently received national recognition from 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
Presentation on June 29th, 2011 at residence with innovative Daikin Altherma heat pump
Nelson Mechanical Design (NMD) and the Vineyard Energy Project (VEP) are pleased to announce an informal presentation about an innovative heat pump/fossil fuel project at 4:00 PM Wednesday, June 29th, at the residence of Ted Bayne and Lea Delacour in West Tisbury. The innovative heat pump project at this residence uses the new Daikin Altherma air to water heat pump to provide radiant heating and domestic hot water all winter long while significantly reducing the propane use by the home's existing boiler. The success and importance of this project and its integration of the heat pump and the propane boiler led Daikin AC to feature it in a case study which will appear on their US website (www.daikinac.com).
Daikin AC is also sending their Altherma representative for the Northeast US, Lance Dyer, to participate in this presentation. After a brief reception from 4 to 4:30 PM, the presentation covering multiple aspects of this innovative project will start: Lance Dyer of Daikin AC will discuss the Altherma heat pump's features and abilities and how they were crucial to the project's success. Brian Nelson of Nelson Mechanical Design will briefly discuss the design, engineering, and installation of this system. He will focus on the project's innovative way of minimizing operation of the propane fired Viessmann boiler when the Altherma heat pump could do the heating at much lower cost.
Ted Bayne and Lea Delacour will add their homeowner sentiments - what the effect was on their comfort and, perhaps most importantly, what the effect was on their propane use and operating costs. Paul Pimentel of the Vineyard Energy Project and Vineyard Power will describe how efficient heat pumps, such as the Altherma, in new construction and retrofits like the Bayne Residence are key to the Island Plan's vision of our energy future.
For more information about this press release please contact Brian Nelson of Nelson Mechanical Design at 508 572 4886 or Ted Bayne of the Vineyard Energy Project.
NMD awarded 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 and Daikin Altherma Air to Water Heat Pumps Pilot Project in West Tisbury
NMD will install a Daikin Altherma air to water heat pump in a West Tisbury residence this winter. Currently, the residence has radiant floors that are heated by a propane fired Viessmann boiler.

Our goal is use the Altherma as the first stage of heating and only use the Viessmann on the colder days of the year. We hope to have the entire installation up and running by February 1st. We will have updates on this web page reflecting our progress.

Here is a picture of the existing mechanical room as it stands before the installation of the Altherma. We hope to also monitor the electricity use of the Daikin system to evaluate its cost effectiveness when compared to propane heating.

--> Before picture of the NMD Daikin Altherma installation site. Viessmann propane boiler on right, radiant circulators on the left. January 2011.
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.

NMD Green's 2010 Year End Newsletter is here!
2010 has been a great year at Nelson Mechanical Design, Inc. We have been involved in many great “green” projects, we introduced to our customers some new high efficiency equipment, and we were recently selected as “2010 Contractor of the Year” by the prestigious Contractor Magazine. Read more in our NMD Newsletter here!
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