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Top Green Building Trends Offer New Opportunities

Originally published: 02.01.11 by HVACR Business Staff


From marketing directly to entire neighborhoods to servicing new types of dwellings.

It’s not an exaggeration to say that nearly all commercial contracting work being done on U.S. buildings these days includes at least one energy-saving goal; and in the residential sector, a growing number of homeowners want high-performance homes. The Oregan-based Earth Advantage Institute, a non-profit organization that works with the building industry to further energy savings, has been watching green construction trends and has identified the top 10 for 2011. The trends, which range from “affordable green” to lifecycle analysis of materials, were identified through discussions with a range of audiences over the latter part of 2010. These included policymakers, builders, developers, architects, real estate brokers, appraisers, lenders, and homeowners. “Despite market conditions, we have seen the market share for highperformance homes increase from 18.5% to 23% in the Portland Metro area alone,” said Sean Penrith, executive director, Earth Advantage Institute. “This is a sure sign that the rate of appeal for these homes is increasing.” Here are the trends, which present opportunties through new marketing channels, new types of customers, and new government-driven programs: 1. Affordable green. Many consumers typically associate green and energy-efficient homes and features with higher costs. However, the development of new business models, technologies, and the mainstreaming of high performance materials are bringing high-performance, healthy homes within reach of all homeowners. Leading the charge are affordable housing groups, including Habitat for Humanity and local land trusts, now

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building and selling LEED for Homes and ENERGY STARcertified homes across the country at price points as low as $100,000. In the existing homes market, energy upgrades are now available through new programs that include low-cost audits and utility bill-based financing. 2. Sharing and comparing home energy use. As social and purchasing sites such as Facebook and Groupon add millions more members, the sharing of home energy consumption data — for rewards — is not far behind. Websites such as Earth Aid (www.earthaid.net) lets consumers track home energy usage and earn rewards for energy savings from local vendors. Consumers can also elect to share the information with others on Earth Aid to see who can conserve the most energy. View these as new social media opportunities for reaching consumers through advertising and education. 3. Outcome-based energy codes. Existing buildings are responsible for most energy use and associated carbon emissions, but the prescriptive energy codes used in commercial remodels don’t encourage effective retrofitting. Compliance with energy codes is determined at permit time, using prescriptive or predictive models, and actual post-construction outcomes may never even be reviewed. Heating and cooling equipment could be faulty or improperly controlled, with significant energy and financial implications. Under outcome-based energy codes, owners could pursue the retrofit strategy that they decide is most effective for their building and its tenants, but they would be required to achieve a pre-negotiated performance target through mandatory annual reporting. The City of Seattle and the New Building Institute have teamed up with the National Trusts’ Preservation Green Lab to pioneer a framework for just such a code, for both new and existing buildings. This model offers more flexibility, and thus opportunities to expand products or services to specific customer retrofit strategies. 4. Community purchasing power. Neighborhoods interested in renewable energy will increasingly band together to obtain better pricing on materials such as solar panels and on installation costs. Group purchasing creates a 15% to 25% savings below current prices. This group discount, in addition to current available tax credits and cash incentives, gives participants a significant cost savings. In Philadelphia, the Retrofit Philly program leverages contests between residential blocks to get neighborhoods involved in energy upgrades. This presents another way to reach customers — marketing to and servicing entire neighborhoods directly. 5. “Grid-aware” appliances fuel convergence of smart grid and smart homes. While many residential smart meters have been installed, the customer interface that will allow homeowners to track energy use more accurately is not yet in place. In the meantime, manufacturers are increasingly introducing appliances that are “gridaware.” These appliances are endowed with more sophisticated energy management capabilities and timers, offering homeowners machines that monitor and report their own electricity usage and that increase or decrease that usage by remote command. Many machines have timers and can already be manually programmed to run during off-peak hours. These developments will begin forging the convergence of a smart grid infrastructure and the control applications needed to manage energy savings in our buildings and homes. 6. Accessory dwelling units. Last year we discussed home “rightsizing” as a trend. However, with fewer people moving or building due to financial concerns, many have chosen to stay put in their favorite area and build accessory dwelling units (ADUs). These small independent units, which can be used for offices, studios, or in-law space, are the ideal size for energy savings and sustainable construction. As detached or attached rental units, they help cities increase urban density and restrict sprawl, while allowing homeowners to add value to their property. The cities of Portland, OR, and Santa Cruz, CA, have waived administrative fees to encourage more ADU construction. In cities where ADUs are becoming more commonplace, HVACR contractors might consider adding equipment and services that focus on this new market. 7. Rethinking of residential heating and cooling. Advances in applied building science in the United States and abroad have resulted in homes that are so tightly sealed and insulated that furnace-less, ductless homes are now a reality. The increasingly popular “Passive House” standard, for example, calls for insulation in walls and ceiling that is so thick that the home is actually heated by everyday activity of the occupants, from cooking to computer use. Even in ENERGY STAR-certified homes, builders are now encouraged to bring all ductwork inside the insulated envelope of the house to eliminate excess heat or cooling loss, and to use only small-but-efficient furnaces and air conditioners to avoid wasting power. Geothermal heating and cooling, where piping loops are run through the ground to absorb warmth in the winter and cool air in the summer, are another option gaining broader acceptance. Start thinking now about what products and services will be in demand tomorrow in your community. Will they require additional training? Investment in new equipment? Establishing new relationships with related business? It’s not too early to prepare for these coming changes. The first step for business owners is education. 8. Residential grey water use. With water shortages looming in many areas including the Southwest and Southern California, recycling of grey water – any household wastewater with the exception of toilet water – is gaining traction. Benefits include reduced water use, reduced strain on septic and stormwater systems, and groundwater replenishment. Although many cities have been slow to legislate on grey water use, some communities have increased the amount of allowable grey water use for irrigation. Systems can be as simple as a pipe system draining directly into a mulch field or they can incorporate collection tanks and pumps. 9. Small commercial certification. Ninety-five percent of commercial building starts in the U.S. are smaller than 50,000 square feet, but the bulk of current certified commercial buildings tend to be much larger. This is in part because of numerous “soft” costs including commissioning, energy modeling, project registration, and administrative time — all of which can be prohibitively expensive for small building owners and developers. To encourage more small commercial projects to go green, alternative certification programs have sprung up, including Earthcraft Light Commercial and Earth Advantage Commercial, which have found significant appeal through fully subscribed pilot programs. 10. Lifecycle Analysis (LCA). We know quite a bit about the performance of certain materials used in high-performance home and commercial building construction, but the industry has just begun to study the effects of these materials over the course of their entire lives — from raw material extraction through disposal and decomposition. Lifecycle analysis examines the impact of materials over their lifetime through the lens of environmental indicators including embodied energy, solid waste, air and water pollution, and global warming potential. LCA for building materials will allow architects to determine what products are more sustainable and what combination of products can produce the most environmentally friendly results. n Earth Advantage Institute works with the building and design industry to help implement sustainable building practices. Its nonprofit mission is to create an immediate, practical and cost-effective path to sustainability and carbon reduction in the built environment. The organization achieves its objectives through a range of innovative certification, education and technical services programs. See www.earthadvantage.org for more information. Advances in applied building science in the United States and abroad have resulted in homes that are so tightly sealed and insulated that furnace-less, ductless homes are now a reality. G u e st Co l u m n i s t Continued from page 10 ““A.. O.. Smiitth’’ss Moderrn Matth””


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