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Can an 8K-Sq-Foot Home Be Green?
This home boasts 8,000 square feet of green building materials and very green technology, but does all that green make it truly green?
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FINALIST: Best Green Home; Credit: Audrey Hall
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October 26, 2009 by Steven Castle

One of the main tenets of green building is “Do you really need that?” Less becomes more. Smaller becomes better. And 8,000-square-foot homes are not supposed to be.

A home that size should not be considered green, says green designer and consultant Michael Anschel of Otogawa-Anschel Design-Build in North Minneapolis, Minn. “The resource consumption, water consumption, land-use are all obscenely out of scale with what is appropriate, let alone required, for living.”

Custom homebuilder Margie Hamrick of Ecoexistence in Vail, Colo., would disagree. She’s the builder and owner of an 8,000-square-foot “green home” in Vail, called the Ranch at Cordillera. Built with a mountain of green materials, from recycled roofing tiles to reclaimed flooring and timbers to low-emission paints and stains, the “Rocky Mountain contemporary” structure was conceived with two goals in mind: to be as sustainable as possible, and to house the Hamricks’ five kids and oft-visiting relatives and friends.

“We’ve always had to live in a larger home,” Hamrick says. “In Colorado, larger homes are where people gather. You tend to come together and share your home with your extended family. … Because we did go big, we decided to take the extra steps and make it as efficient as we could.”

That includes a 7-kilowatt array of photovoltaic solar panels, which provides the home with about 50 percent of its electricity when it’s fully occupied. During the months when nobody is there, the system can provide almost 100 percent of the power. The home is effectively divided into several “pods,” which can be completely shut down when they aren’t occupied. One pod is the main living area, plus two bedroom suites on the lower level and a bunkroom that sleeps five.

Also helping to conserve energy is an AMX home control and automation system, a Lutron lighting control system which manages the home’s energy-efficient LED (light emitting diode) lamps, motorized window shades, a water circulation system and even an innovative home theater setup.

“We’re actually using less energy in this home than our previous home, which was 6,000 square feet,” says Hamrick. She says electrical bills range from $65 to $300 a month, but would be $800 to $1,000 without the home’s many green elements.

Getting Started
When Hamrick’s home project started, she was just aiming for some “shades of green.”

“We went to the local building department and heard of a green program in the community [Eagle County’s Eco-Build program], and we quickly learned about what there was out there with Colorado’s Built Green program and the [national] LEED (Leadership in Energy and Environmental Design) certification.” The LEED Home certification was a higher standard, but Hamrick decided to go for it and meet state and county requirements as well. “It was scary, because there wasn’t a lot of information available for me. I felt like the Lone Ranger out here, with no homes to visit or builders to look into. I went to green building shows and met everyone I could, and I learned a lot.” Then she started talking to local contractors about what she had discovered during her research.

She had decided on efficient lighting fixtures and heating systems, in addition to a solar array, but one green possibility she hadn’t considered was how home electronics could help her home be green—or at least be greener. “I didn’t know much about that at all,” she admits. But in talking with the local custom electronics pros at Conundrum Technologies, of Avon, Colo., she began to see the benefit. “I realized if you’re going to put all these things into the home, and if you don’t have a system to control them, you’re defeating the purpose because then you’re going to overuse your heating and lighting.”

Getting Teched Up
Conundrum and the electrical contractors separated the house’s electrical service into five different electrical panels and lighting control panels, which saved approximately $50,000 alone, by using far less copper wiring. Jason Perez at Conundrum also explains that the setup is more energy-efficient, because it’s natural to lose small amounts of power on longer runs of cabling.

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Steven Castle - Contributing Writer
Steven Castle is Electronic House's managing editor. he has been writing about consumer electronics, homes and energy efficiency topics for two decades. He is also the co-founder of GreenTech Advocates.

Installer/Equipment List

Systems Design and Installation
Conundrum Technologies
Avon, Colo.
www.conundrumtechnologies.com

Builder
Ecoexistence
Vail, Colo.

Equipment
2 Homeworks 59” Enclosures, each holds 8 modules (HWI-PNL-8)
1 Homeworks Wired 8 Series Generation 5 Processor with Module Interface (H8P5-MI-120)
3 Homeworks Remote Power Modules with Auto Detect (HW-RPM-4A)
1 Homeworks Remote Power Modules with Relay Switching (HW-RPM-4R)
28 Homeworks Remote Power Modules with Dimming (HW-RPM-4U-120)
3 Homeworks Module Interfaces (HWI-MI-120)
1 Homeworks Auxiliary Power Supply (PPS2-120-15DC-3A)
5 Ballast Interfaces (GRX-TVI)
86 Homeworks Wired seeTouch Keypads with Custom Engraving (STWD)
1 Ni-3100 NetLinx Integrated Controller
2 NXD-1000vi 10” Touch Panels
1 MIO-R4 Remote Control with Touchscreen
1 Zigbee Communications Network
34 Sanyo 200W Modules
1 Fronius IG5100 Inverter
1 Fronius IG3000 Inverter
2 Fronius IG Cards (provides integration with AMX system)
10 AMX ENV-VST-C Color Communicating Thermostats
1 Matrix 8 Zone Audio Switcher
19 SpeakerCraft Custom Round Series In-Ceiling Speakers
2 SpeakerCraft Outdoor Elements Outdoor Speakers
1 Edimax 4 Port Wireless Router
1 Edimax 32 Port Switch
1 Edimax Wireless Access Point
1 Da-Lite 133” Cinema Contour HDTV Format Screen
1 Chief Ceiling Projector Mount
1 Middle Atlantic Equipment Rack
1 Sim2 D75 Projector
2 Meridian DSP5000 Speakers
1 Meridian DSP33 Center Channel Speaker
1 Meridian DSP1500 Subwoofer
1 Meridian G68 Digital Processor
1 Sony Blu-Ray Player
1 Comcast HD Digital Cable Box
7 Fortress Theatre Chairs – Eco-Leather
6 LG 22LG30
2 LG 42LG30
1 LG 26LG40
1 Snap AV D3-F-BLK
1 Chief JWD-210B
1 Chief PWR-UB
2 Chief FWD-110B
2 Snap AV D2-T-BLK
2 Chief PAC-501B
5 Speaker Craft IRC-2.1B
5 Speaker Craft PS-1.0
5 Speaker Craft AT-1.0
5 Speaker Craft IRE-1.0
5 Speaker Craft IRE-2.0
10 Niles NILC5HDDA
1 Integra DTR-4.9
47 LED Power LB364-WASP-100
4 LED Power LB363-WASP-100
14 LED Power LB362-WASP-110
9 LED Power LB361-WASP-100
19 Dimmable Power Supplies
3000 ft. 18/4 Fire Wire
3000 ft Cat5e Yellow
2000 ft Cat5e White
4000 ft Cat5e Blue
6000 ft RG6 Quad Shield, Black
4000 ft 16/4 Signature Select Speaker Wire
3000 ft Lutron Graphic Eye/Master Keypad Cable
2000 ft 18/4 Gray


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