CleanEdison: What is RESNET?


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This overview of the RESNET organization and the HERS Rater Training is one of the first sections of the CleanEdison HERS Rater Course.

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CleanEdison: What is RESNET?

  3. 3. Copyright 2010 CleanEdison Inc RESNET  Non-profit organization  Established in 1995  Mission is to:  Set quality standards and maintain the system to ensure standards for home energy ratings are being met  Help to promote your business
  4. 4. Copyright 2010 CleanEdison Inc RESNET Standards  Recognized for  Accreditation of rating providers, rater training providers, and rating software tools  Verification of energy savings for energy efficient mortgages (EEMs)  Verification of a home's energy performance for EPA's ENERGY STAR Homes Program and the Department of Energy’s Building America Program  Performance option for energy code compliance in 16 states  Verification of energy performance in state utility benefit program funded residential energy efficiency programs in 9 states
  5. 5. Copyright 2010 CleanEdison Inc RESNET Levels of Auditing Complexity  Basic level: Home Energy Survey  Visual inspection  Does not use testing equipment  Takes about an hour  Building Performance Audit  Visual inspection  Diagnostic testing  Takes 3-4 hours  Comprehensive HERS Rating  Most in-depth  Includes computerized simulation analysis  Cost benefit analysis and Return on Investment calculations for recommended improvements Performed by HESPs – Home Energy Survey Professionals Performed by HERS Raters – Home Energy Rating System Raters (what you’re here to attain).
  6. 6. Copyright 2010 CleanEdison Inc Home Energy Rating  Using construction plans, computer simulation can be done prior to building to address areas of needed efficiency improvements  Results in a projected HERS Rating  After construction, diagnostic tests performed.  Using both sets of inputs, the building’s HERS Index is established  Provides a basis for comparing the relative energy efficiency of homes
  7. 7. Copyright 2010 CleanEdison Inc Projected and Confirmed Ratings  Projected rating  Using architectural drawings and specifications of a to-be-built home, or a site audit for a to-be-improved home  Using the envelope leakage rate  And the distribution system efficiency  Orientation and location of the home  Confirmed rating  Inspections during building process  Upon completion of construction, rated features are confirmed using on-site diagnostic tests and actual orientation of the home.
  8. 8. Copyright 2010 CleanEdison Inc Reference Home  The HERS rating system compares the rated home with the reference standard home (which is of the same size and layout) on all of the aspects associated with energy usage.  The reference standard home is based on the minimum building requirement as defined by the International Energy Conservation code of 2006.  For conducting the rating and determining the home’s score, raters use a software simulation to compare the rating and reference homes.  1993 MEC, 2006 HERS
  9. 9. Copyright 2010 CleanEdison Inc HERS Index The HERS Reference Home sets the standard at 100. Homes that are more efficient than the standard will score lower on the scale. For each percentage point that the home in question is more efficient than the reference home, the home is rated 1 point lower on the scale. Energy Star homes score an 85 or lower (80 or lower in Northern climate zones) Builder’s Challenge homes score a 70 or lower
  10. 10. Copyright 2010 CleanEdison Inc Using the HERS Index  What would the HERS Index be for a home that was 75% more efficient than the reference standard?  What about a home that was 25% less efficient than the reference standard home?
  11. 11. Copyright 2010 CleanEdison Inc Star rating HERS Index Range Stars Relative Energy Use (with respect to Reference Home) =<500 and >401 =<500%and>401% =<400 and >301 + =<400% and >301% =<300 and >251 =<300% and >251% =<250 and >201 + =<250% and >201% =<200 and >151 =<200% and >151% =<150 and >101 + =<150% and >1% =<100 and >91 =<0% and >-9% =<90 and >86 + =<-10% and >-14% =<85 and >71 =<-15% and >-29% =<70 and >=0 + =<-30% and >=-100%
  12. 12. Copyright 2010 CleanEdison Inc RESNET HIERARCHY Provider Rater Consumer Consumer Rater ConsumerAssures quality of new raters Evaluates performance
  13. 13. Copyright 2010 CleanEdison Inc Steps to Becoming a Rater  Rater training  Includes two supervised ratings  Pass the rater test  Mentorship period through an accredited Home Energy Rating Provider  Includes at least three ratings  18 hours of professional development every 3 years  Three options:  Continuing Ed course through Training Provider  Attending a RESNET conference  Pass the rater test again
  14. 14. Copyright 2010 CleanEdison Inc Benefits of a Home Energy Audit 14 Why should the homeowner get an audit?  Saving money on bills  Increasing comfort  Increasing resale value  Improving marketability  Uncovering hidden problems Helping the environment Take advantage of government incentives  Investing in energy efficiency measures gives a great return on investment
  15. 15. Copyright 2010 CleanEdison Inc Rater’s Requirements 15 You are required to: Understand the basic principles of energy and learn to apply these principles Evaluate each of the minimum rated features established by RESNET Prepare a comprehensive HERS rating
  16. 16. Copyright 2010 CleanEdison Inc Rater’s Requirements 16 You are required to:  Provide relevant financing resources to clients, including local, state, and federal incentives, tax credits, rebates, and programs available to assist homeowners in making energy efficiency improvements  Educate building occupants about no-cost opportunities for energy savings – primarily behavior and lifestyle changes
  17. 17. Copyright 2010 CleanEdison Inc What is ENERGY STAR? 17 A program sponsored by the US Department of Energy and the EPA that identifies and promotes energy-efficient products to reduce greenhouse gas emissions (This includes homes).