Module 11 - HERS Rating.pptx
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STRAND Energy-Star Training Performing a HERS Rating © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 Water Heater Type RESNETEnergy Factor ConversionEquations basedonWater Heater Type Uniform Energy Energy EFConversion Factor Factor Constraints Equation...
STRAND Energy-Star Training Performing a HERS Rating © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 Water Heater Type RESNETEnergy Factor ConversionEquations basedonWater Heater Type Uniform Energy Energy EFConversion Factor Factor Constraints Equation (UEF)* (EF)** Consumer Gas-FiredWater Heater EF=0.9066 * UEF+0.0711 0.07 Consumer Electric Water Heater (Electric Resistance) EF=2.4029 * UEF- 1.2844 -1.28 Consumer Electric Water Heater (Heat-Pump) EF=1.2101 * UEF- 0.6052 -0.61 InstantaneousGas-FiredWater Heater EF=UEF 0.00 InstantaneousElectric Water Heater EF=UEF 0.00 EF=1.0005 * UEF+0.0019 0.00 Residential-Duty Commercial Gas-Fired Water Heater Residential-Duty Commercial Electric InstantaneousWater Heater EF=1.0219 * UEF- 0.0025 © 2023 STRAND Dallas I Texas 0.00 Energy Factor shouldbe the minimumof 0.96 andthe CalculatedEnergy Factor CalculatedEnergy Factor shouldbe <=1.0. The EF estimationequationscangenerate Efsgreater than1.0 972 620 8204 HERS Rating The HERS Reference Home One aspect of the HERS Index that bears further scrutiny is the HERS Reference Home. Here’s what the HERS Standards say about it: “The reference home is the geometric twin of the rated home, configured to a standard set of thermal performance characteristics, from which the energy budget, that is the basis for comparison, is derived.” Basically, the Reference Home is the same size and shape as the rated home and is also in the same location and IECC climate zone. The inputs for insulation R-values, window U-values, HVAC system efficiency, and similar factors are defined in the HERS Standards but are close to what’s in the 2006 IECC. © 2023 STRAND Dallas I Texas 972 620 8204 HERS Rating The HERS Rated Home This is the actual home being rated. It is a physical address with characteristics that can be modeled. “The Specific real property that is evaluated using the Energy Rating procedures specified by this standard” Normalized modified end use loads -Structure is being Rated, Not occupants -Normalization assures consistency -Items such as internal gains, water usage, temperature set points are normalized -Fuel type is Neutral © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 Energy Rating Reference Home and Rated Home Configuration. © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204 Normative Appendix B Inspection Procedures for Minimum Rated Features © 2023 STRAND Dallas I Texas 972 620 8204
