LEED

The Leadership in Energy and Environmental Design (LEED) Green Building Rating System™ is the nationally accepted benchmark for the design, construction, and operation of high performance green buildings.

How is LEED Developed?

The LEED Rating System was created to transform the building environment to sustainability by providing the building industry with consistent, credible standards for what constitutes a green building. The rating system is developed and continuously refined via open, consensus-based process that has made LEED the green building standard of choice for Federal agencies and state and local governments nationwide.

What is LEED Certification?

To earn certification, a building project must meet certain prerequisites and performance benchmarks (“credits”) within each category. Projects are awarded Certified, Silver, Gold and Platinum certification depending on the number of credits they achieve. This comprehensive approach is the reason LEED-certified buildings have reduced operating cost, healthier and more productive occupants, and conserve our natural resources.

Why Certify?

LEED certification provides independent, third party verification that a building project meets the highest performance standards. The LEED plaque is recognized nationwide as proof that a building is environmentally responsible, profitable, and a healthier place to live or work.

LEED- Certified Building Criteria

  1. are leading the transformation of the building environment
  2. are built as designed and perform as expected
  3. have lower operating cost and increased asset value
  4. are healthy and comfortable for their occupants
  5. reduce waste sent to landfills
  6. conserve energy and water
  7. reduce harmful greenhouse gas emissions
  8. qualify for tax rebates, zoning allowances, and other incentives, in hundreds of cities
  9. demonstrate an owner’s commitment to environmental stewardship and social responsibility

List of incentives: http://www.usgbc.org/DisplayPage.aspx?CMSPageID=64&

LEED for Homes related to Domestic Hot Water

The US Green Building Council (USGBC) has LEED certification for new homes (LEED-H). Domestic hot water is addressed in the Energy and Atmosphere portion of LEED certification. Two paths are provided to accumulate credits for certification; Credit 1 calls for Energy Star products to be used, while credit 2 through 7.2 is the alternate path. Tankless instantaneous hot water earns two points in Credit 7.2 if the energy factor is equal to or exceeds 0.99%. LEED provides link to help readers choose products with required energy factors. Eemax Electric Tankless Water Heaters is the only tankless heater manufaturer listed.

Sustainable Practices for LEED Homes

  1. The efficient use of energy resources;
  2. The efficient use of water resources;
  3. The efficient use of building construction resources (i.e. through improved design, material selection and utilization, and construction practices)
  4. The efficient use of land resources, and
  5. Enhanced indoor environmental quality to safeguard the health of the homes occupants

LEED Performance Levels Minimum number of LEED for Homes Point Required

Certified 30/108
Silver 50/108
Gold 70/108
Platinum 90/108

How do I participate in LEED for Homes?

An application form in the LEED for Homes Pilot is available a www.usgbc.org/leed/homes. This web site also offers additional information on green home building programs that offer training and educational information.

What defines a LEED Home?

Over half the energy use in a home is for space heating, space cooling and domestic water heating. An Energy Star qualified home is both designed and field tested to use 30 percent less of these end uses than a comparable home built to Modern Energy Code.

Credit 7: Water Heating

Intent: Optimizes energy performance of water heating system

  1. Design and install energy-efficient water distribution system; select one measure
    • Structure plumbing system; including a circulation loop that is within 10 feet of every fixture, and has a demand controller circulation pump. Branch lines run from the loop to each fixture and are no longer than 10 feet, and a maximum of ½” in diameter. All hot water piping shall have R4 insulation (3 Points- includes 2 Points for water efficiency benefit of 10 percent in door water savings)
    • note: Electric Tankless compact size and 99% efficiency complies
    • Central manifold distribution system, including a trunk line from the heater to central manifold. Branch lines run from manifold to each fixture and are no longer 10 feet, and a maximum of ½” diameter. All hot water piping shall have R4 insulation (2 Points- includes 1 Point from water efficiency benefit of 5 percent in door water savings)
    • Water heater is located within 20 feet of plumbing to all fixtures. Branch lines run from central header to each fixture and are a maximum of ½” diameter. All hot water piping shall have R4 insulation. (2 Point- includes 1 Point for water efficiency benefit of 5 percent indoor water savings)

Note: About 10 to 15% of energy used in hot water systems are from distribution loses. Distribution loses can be greatly reduced by ensuring that all hot water end-uses are located with in 20 feet of the water heater

Solution: Eemax Electric Tankless Water Heaters. Compact size and no venting allows the tankless electric heater to be installed practically anywhere

  1. Design and install energy-efficient water heating equipment; select one measure

LEED for New Construction/Major Commercial Renovations

LEED for new construction/major commercial renovation for retail space rely on computer models and product selection/design to achieve a specific net reduction of energy consumption


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