Upload
cleanedison
View
542
Download
0
Tags:
Embed Size (px)
DESCRIPTION
This overview of the RESNET organization and the HERS Rater Training is one of the first sections of the CleanEdison HERS Rater Course.
Citation preview
RESNET – HERS RATER TRAINING
DAY 1
SECTION 1:
WHAT IS RESNET?
2
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
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
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).
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
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.
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
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
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?
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%
Copyright 2010 CleanEdison Inc
RESNET HIERARCHY
Provider
Rater
Consumer
Consumer
Rater ConsumerAssures quality of new
raters
Evaluates performance
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
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
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
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
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).