Green Building Open House Tour 2014
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7 Commercial Drive
Join ReVision Energy in touring Maine and New Hampshire’s green homes during NESEA Green Building’s Open House! This event allows you to visit a variety of homes with eco-friendly features, ranging from insulation improvements, to renewable heating systems and of course lots of solar. As in years past, many ReVision customers are on the tour and welcome you to visit their home between 10am-4pm on Saturday, October 4th!
Robin & Rob Sanford // 92 Mosher Road in Gorham, ME
This Gorham home has both solar hot water and solar electricity offsetting its energy loads. There are forty solar evacuated tubes heating the domestic hot water for this home. The tubes provide heat for a well insulated, German-made tank with backup coming from the existing oil boiler. The hot water collectors allow the boiler to remain off all summer long so these home owners don’t need to hear the boiler come on during the hot summer months! Also installed are twelve solar electric modules, each with its own micro-inverter. The micro-inverters are ideal for applications where shade might pose as an issue during different times of the day. Since this system is grid-tied with no batteries, excess electricity feeds back into the utility grid whenever the panels make more electricity than the home is able to use.
Roger Normand // 18 Edgewater Lane in Saco, ME
This newly constructed home has been built to Passive House standard, a standard that builds 90% more energy efficient than U.S. code. There are only 200 or so homes currently in the United States built to this rigorous standard. Sited to perfect southern orientation and with views of the Saco River, the exterior has an additional 4″ EPS/Roxul insulation, factory built double stud exterior walls spaced 14″ apart, factory built roof trusses, with special attention to air sealing and thermal breaks. In addition, there is a 6 kilowatt solar electric system on the roof, which will provide enough energy for all of its consumption, making this a net zero home.
Adam Troidl // 55 Intervale Road in Freeport, ME
With a LEED Silver accreditation, this passive solar home is net zero ready! It’s likely you will not find it with a GPS, so we recommend driving to 20 Litchfield Road in Freeport, take a left and continue straight into the Kelsey Brook development and follow the circle until you find house #55. A representative from the US Green Building Council, Maine Chapter will be on site to help answer questions.
The house was originally built in 1975, using passive solar features & a wide variety of salvaged materials, including posts & beams from a 1800′s mill building. Low indoor comfort, due to poor shell insulation & high air infiltration, led to a renovation project, a deep energy retrofit to drastically reduce energy needs, with Net Zero as the goal. The renovation project included new exterior rigid foam insulation, new windows, & new cladding, while reusing or keeping the original salvaged materials used when the house was built. There is a solar electric system producing over 7,000 kwhrs of clean electricity each year. The domestic hot water is provided by solar evacuated tubes with back up to the hot water coming from electricity. The primary heating is provided by low energy air source heat pumps, with supplemental heat coming from a wood stove. Deep eaves and slatted sunshades help prevent overheating in the summer, while allowing winter solar gain. Extensive use of LED lighting is expected to reduce the lighting load to about 1/3 that of a conventional home
Steve Seekins // 18 Tyler Lane in Clark Island, ME
Along the mid-coast sits an incredibly efficient and beautiful home overlooking the Atlantic Ocean in Clark Island, Maine. Along with a on-site wind turbine, this home uses insulated concrete form for the structure and the walls are well insulated, equivalent to R-40. The heat and domestic hot water comes from a 75kBtu Rinnai combination boiler with radiant heat on the first floor, garage floor and later for the planned enclosed porch. A Fujitsu mini-split heat pump to provides for additional heating and cooling on the second floor and also acts as a dehumidifier to help protect their library collection. Last winter, a 7.5 kilowatt solar electric system was installed, utilizing a SMA Sunny Boy inverter. The homeowner makes all the electricity they use with clean energy technology.
Heather Parker // 101 Mill Pond Way in Portsmouth, NH
This home’s design is based generally on the European passive house model. It is highly insulated, south facing and as air tight as possible. There is a heat recovery ventilation system which lets in fresh air while the solar hot water panels provide for the domestic hot water load and the solar electric panels provide close to 5,000 kilowatt hours of electricity annually. While most of the home is heated by the sun, stored in thermal mass of the concrete floor, there is a heat pump in the small apartment and the main house has a small propane fireplace. This incredibly energy efficient home utilizes sustainability in it’s yard as well. The yard is half vegetable, flower, butterfly shrubs and small fruit gardens.