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HomeMy WebLinkAboutResidential Energy Code ChecklistCITY OF RENTON ꟾ DEVELOPMENT SERVICES DIVISION1055 South Grady Way, Floor Six, Renton Washington 98057 ‌ 425.430.72002018 WSEC SINGLE FAMILY COMPLIANCE CHECKLIST These requirements apply to all IRC building types, including detached one - and two-family dwellings and mul�ple single-family dwellings (townhouses). INSTRUCTIONS: This single-family project will use the requirements of the Prescrip�ve Path below and incorporate the minimum values listed. Based on the size of the structure, the appropriate number of addi�onal credits are checked as chosen by the permit applicant. Provide all informa�on from the following tables as building permit drawings: Table R402.1 - Insula�on and Fenestra�on Requirements by Component, Table R406.2 - Fuel Normaliza�on Credits and 406.3 - Energy Credits. Authorized Representative: Date: ALL CLIMATE ZONES (TABLE R402.1.1) a. b. c. d. e. f. g. h. PROJECT INFORMATION CONTACT INFORMATION Fenestra�on U-Factorb Skylight U-Factor b Glazed Fenestra�on SHGC b e Ceiling e Wood Frame Wall g h Floor Below Grade Wall c h Slab d f R-Value & Depth R-Value a N/A N/A N/A 49 21 int 30 10/15/21 int + TB 10, 2 � U-Factor a 0.30 0.50 N/A 0.026 0.056 0.029 0.042 N/A R-values are minimums. U-factors and SHGC are maximums. When insula�on is installed in a cavity that is less than the label or design thickness of the insula�on, the compressed R-value of the insula�on from Appendix Table A101.4 shall not be less than the R-value specified in the table. The fenestra�on U-factor column excludes skylights. “10/15/21 + 5TB” means R-10 con�nuous insula�on on the exterior of the wall, or R-15 con�nuous insula�on on the interior of the wall, or R-21 cavity insula�on plus a thermal break between the slab and the basement wall at the interior basement wall. “10/15/21 + 5TB” shall be permi�ed to be met with R-13 cavity insula�on on the interior of the basement wall plus R-5 con�nuous insula�on on the interior or exterior of the wall. “5TB” means R-5 thermal break between floor slab and basement wall. R-10 con�nuous insula�on is required under heated slab on grade floors. See Sec�on R402.2.9.1. For Single ra�er - or joist-vaulted ceilings, the insula�on may be reduced to R-38 if the full insula�on depth extends over the top plate of the exterior wall. R-7.5 con�nuous insula�on installed over an exis�ng slab is deemed to be equivalent to the required perimeter slab insula�on when applied to exis�ng slabs complying with Sec�on R503.1.1. If foam plas�c is used, it shall meet the requirements for thermal barriers protec�ng foam plas�cs. For log structures developed in compliance with Standard ICC 400, log walls shall meet the requirements for climate zone 5 of ICC 400. Int. (intermediate framing) denotes framing and insula�on as described in Sec�on A103.2.2 including standard framing 16 inches on center, 78% of the wall cavity insulated and headers insulated with a minimum of R-10 insula�on. Prescriptive Path - Single Family 2018 Washington State Energy Code - R 1 CITY OF RENTON ꟾ DEVELOPMENT SERVICES DIVISION1055 South Grady Way, Floor Six, Renton Washington 98057 ‌ 425.430.72002018 WSEC SINGLE FAMILY COMPLIANCE CHECKLIST Each dwelling unit in a residential building shall comply with sufficient op�ons from Table R406.2 (fuel normaliza�on credits) and Table 406.3 (energy credits) to achieve the following minimum number of credits. To claim this credit, the building permit drawings shall specify the op�on selected and the maximum tested building air leakage, and show the qualifying ven�la�on system and its control sequence of opera�on. Please provide a duplicate copy of Table 406.2 on the cover sheet of the plans for Inspector reference. Provide make and model number if a high efficiency HVAC equipment or if an efficient water hea�ng op�on is selected. 1. 2. 3. 4. Before selec�ng your credits on this Summary table, review the details in Table 406.3 (Single Family), on page 4. SUMMARY OF TABLE R406.2 Prescriptive Path - Single Family 2018 Washington State Energy Code - R 2 Small Dwelling Unit: 3 credits Dwelling units less than 1,500 sf in condi�oned floor area with less than 300 sf of fenestra�on area. Addi�ons to exis�ng building that are greater than 500 sf of heated floor area but less than 1,500 sf. Medium Dwelling Unit: 6 creditsAll dwelling units that are not included in #1 or #3. Large Dwelling Unit: 7 credits Dwelling units exceeding 5,000 sf of condi�oned floor area. Addi�ons less than 500 square feet: 1.5 credits All other addi�ons shall meet 1-3 above. HEATING OPTIONS 1 2 3 4 5 ENERGY OPTIONS 1.1 1.2 1.3 1.4 1.5 1.6 1.7 2.1 2.2 2.3 2.4 3.1 3.2 3.3 3.4 3.5 3.6 4.1 4.2 CREDITS - Select ONE hea�ng op�on 0.0 1.0 -1.0 0.5 -1.0 CREDITS - Select ONE energy op�on from each categoryd 0.5 1.0 0.5 1.0 2.0 3.0 0.5 0.5 1.0 1.5 2.0 1.0 1.0 1.5 1.5 1.5 2.0 0.5 1.0 Enter Appliance make & model number where appropriate FUEL NORMALIZATION DESCRIPTIONS Combus�on hea�ng minimum NAECAb Heat pumpc Electric resistance heat only - furnace or zonal DHP with zonal electric resistance per op�on 3.4 All other Hea�ng systems ENERGY CREDIT OPTION DESCRIPTIONS Efficient Building Envelope Efficient Building Envelope Efficient Building Envelope Efficient Building Envelope Efficient Building Envelope Efficient Building Envelope Efficient Building Envelope Air Leakage Control and Efficient Ven�la�on Air Leakage Control and Efficient Ven�la�on Air Leakage Control and Efficient Ven�la�on Air Leakage Control and Efficient Ven�la�on High Efficiency HVAC High Efficiency HVAC High Efficiency HVAC High Efficiency HVAC High Efficiency HVAC High Efficiency HVAC High Efficiency HVAC Distribu�on System High Efficiency HVAC Distribu�on System CITY OF RENTON ꟾ DEVELOPMENT SERVICES DIVISION 1055 South Grady Way, Floor Six, Renton Washington 98057 ‌ 425.430.7200 2018 WSEC SINGLE FAMILY COMPLIANCE CHECKLIST SUMMARY OF TABLE R406.2 (cont.) a. b. c. d. e. PLEASE SUBMIT ONLY PAGES 1-3 OF THIS WORKSHEET TO YOUR BUILDING OFFICIAL. Prescriptive Path - Single Family 2018 Washington State Energy Code - R 3 ENERGY OPTIONS 5.1d 5.2 5.3 5.4 5.5 5.6 6.1e 7.1 CREDITS - Select ONE energy op�on from each categoryd 0.5 0.5 1.0 1.5 2.0 2.5 1.0 0.5 Enter Appliance make & model number where appropriateENERGY CREDIT OPTION DESCRIPTIONS (cont.) Efficient Water Hea�ng Efficient Water Hea�ng Efficient Water Hea�ng Efficient Water Hea�ng Efficient Water Hea�ng Efficient Water Hea�ng Renewable Electric Energy (3 credits max) Appliance Package Total Credits An alterna�ve hea�ng source sized at a maximum of 0.5 W / sf (equivalent) of heated floor area or 500 W, whichever is bigger, may be installed in the dwelling unit. Equipment listed in Table C403.3.2(4) or C403.3.2(5). Equipment listed in Table C403.3.2(1) or C403.3.2(2). You cannot select more than one op�on from any category EXCEPT in category 5. Op�on 5.1 may be combined with op�ons 5.2 through 5.6. See Table 406.3. 1.0 credit for each 1,200 kWH of electrical genera�on provided annually, up to 3 credits max/ See the complete Table R406.2 for all requirements and op�on descrip�ons. CITY OF RENTON ꟾ DEVELOPMENT SERVICES DIVISION 1055 South Grady Way, Floor Six, Renton Washington 98057 ‌ 425.430.7200 2018 WSEC SINGLE FAMILY COMPLIANCE CHECKLIST TABLE 406.3 - ENERGY CREDITS (SINGLE FAMILY) OPTION DESCRIPTION CREDITS SF 1. EFFICIENT BUILDING ENVELOPE OPTIONS Only one op�on from items 1.1 through 1.7 may be selected in this category. Compliance with the conduc�ve UA targets is demonstrated using Sec�on R402.1.4, Total UA alterna�ve, where [1-(Proposed UA/Target UA)] >the required % UA reduc�on. Prescriptive Path - Single Family 2018 Washington State Energy Code - R 4 1.1 1.2 1.3 1.4 1.5 1.6 1.7 0.5 1.0 0.5 1.0 2.0 3.0 0.5 Prescrip�ve compliance is based on Table R402.1.1 with the following modifica�ons: Ver�cal fenestra�on U = 0.24 Prescrip�ve compliance is based on Table R402.1.1 with the following modifica�ons: Ver�cal fenestra�on U = 0.20 Prescrip�ve compliance is based on Table R402.1.1 with the following modifica�ons: Ver�cal fenestra�on U = 0.28 Floor R-38 Slab on grade R-10 perimeter and under en�re slab below grade slab R-10 perimeter and under en�re slab or Compliance based on Sec�on R402.1.4: Reduce the Total conduc�ve UA by 5% Prescrip�ve compliance is based on Table R402.1.1 with the following modifica�ons: Ver�cal fenestra�on U = 0.25 Wall R-21mplus R-4 ci Floor R-38 Basement wall R-21 int plus R-5 ci Slab on grade R-10 perimeter and under en�re slab Below grade slab R-10 perimeter and under en�re slab or Compliance based on Sec�on R402.1.4: Reduce the Total conduc�ve US by 15% Prescrip�ve compliance is based on Table R402.1.1 with the following modifica�ons: Ver�cal fenestra�on U = 0.22 Ceiling and single-ra�er or joist-vaulted R-49 advanced Wood frame wall R-21 int plus R-12 ci Floor R-38 Basement wall R-21 int plus R-12 ci Slab on grade R-10 perimeter and under en�re slab Below grade slab R-10 perimeter and under en�re slab or Compliance based on Sec�on R402.1.4: Reduce the Total conduc�ve UA by 30% Prescrip�ve compliance is based on Table R402.1.1 with the following modifica�ons: Ver�cal fenestra�on U = 0.18 Ceiling and single-ra�er or joist-vaulted R-60 advanced Wood frame wall R-21 int plus R-16 ci Floor R-48 Basement wall R-21 int plus R-16 ci Slab on grade R-20 perimeter and under en�re slab Below grade slab R-20 perimeter and under en�re slab or Compliance based on Sec�on R402.1.4: Reduce the total conduc�ve UA by 40% Advanced framing and raised heel trusses or ra�ers Ver�cal Glazing U-0.28 R-49 Advanced (U-0.020) as listed in Sec�on A102.2.1, Ceilings below a vented attic and R-49 vaulted ceilings with full height of uncompressed insula�on extending over the wall and top plate at the eaves. Prescriptive Path - Single Family 2018 Washington State Energy Code - R 5 CITY OF RENTON ꟾ DEVELOPMENT SERVICES DIVISION 1055 South Grady Way, Floor Six, Renton Washington 98057 ‌ 425.430.7200 2018 WSEC SINGLE FAMILY COMPLIANCE CHECKLIST TABLE 406.3 - ENERGY CREDITS (SINGLE FAMILY) OPTION DESCRIPTION CREDITS SF 2. AIR LEAKAGE CONTROL AND EFFICIENT VENTILATION OPTIONS ² Only one op�on from items 2.1 through 2.4 may be selected in this category. 2.1 2.2 2.3 2.4 0.5 1.0 1.5 2.0 Compliance based on R402.4.1.2: Reduce the tested air leakage to 3.0 air changes per hour maximum at 50 Pascals or For R-2 Occupancies, op�onal compliance based on Sec�on R402.4.1.2: Reduce the tested air leakage to 0.3 cfm/sf maximum at 50 Pascals and All whole house ven�la�on requirements as determined by Sec�on M1507.3 of the Interna�onal Residen�al Code or Sec�on 403.8 of the Interna�onal Mechanical Code shall be met with a high efficiency fan(s) (maximum 0.35 wa�s/cfm), not interlocked with the furnace fan (if present). Ven�la�on systems using a furnace including an ECM motor are allowed, provided that they are controlled to operate at low speed in ven�la�on only mode. To qualify to claim this credit, the building permit drawings shall specify the op�on being selected and the maximum tested building air leakage, and shall show the qualifying ven�la�on system and its control sequence of opera�on. Compliance based on Sec�on R402.4.1.2: Reduce the tested air leakage to 2.0 air changes per hour maximum at 50 Pascals or For R-2 Occupancies, op�onal compliance based on Sec�on R402.4.1.2: Reduce the tested air leakage to 0.25 cfm/sf maximum at 50 Pascals and All whole house ven�la�on requirements as determined by Sec�on M1507.3 of the Interna�onal Residen�al Code or Sec�on 403.8 of the Interna�onal Mechanical Code shall be met with a heat recovery ven�la�on system with minimum sensible heat recovery efficiency of 0.65. ¹ Compliance based on Sec�on R402.4.1.2: Reduce the tested air leakage to 1.5 air changes per hour maximum at 50 Pascals or For R-2 Occupancies, op�onal compliance based on Sec�on R402.4.1.2: Reduce the tested air leakage to 0.25 cfm/sf maximum at 50 Pascals and All whole house ven�la�on requirements as determined by Sec�on M1507.3 of the Interna�onal Residen�al Code or Sec�on 403.8 of the Interna�onal Mechanical Code shall be met with a heat recovery ven�la�on system with minimum sensible heat recovery efficiency of 0.75. ¹ Compliance based on Sec�on R402.4.1.2: Reduce the tested air leakage to 0.6 air changes per hour maximum 50 Pascals or For R-2 Occupancies, op�onal compliance based on Sec�on R402.4.1.2: Reduce the tested air leakage to 0.15 cfm/sf maximum at 50 Pascals and All whole house ven�la�on requirements as determined by Sec�on M1507.3 of the Interna�onal Residen�al Code or Sec�on 403.8 of the Interna�onal Mechanical Code shall be met with a heat recovery ven�la�on system with minimum sensible heat recovery efficiency of 0.80. Duct Installa�on shall comply with Sec�on R403.3.7.¹ ¹ To qualify to claim this credit, the building permit drawings shall specify the op�on being selected and shall specify the maximum tested building air leakage and shall show the heat recovery ven�la�on system. ² Provide approved building air leakage tes�ng agency and enhanced framing prac�ces to sa�sfy selected �ght construc�on. Prescriptive Path - Single Family 2018 Washington State Energy Code - R 6 CITY OF RENTON ꟾ DEVELOPMENT SERVICES DIVISION 1055 South Grady Way, Floor Six, Renton Washington 98057 ‌ 425.430.7200 2018 WSEC SINGLE FAMILY COMPLIANCE CHECKLIST TABLE 406.3 - ENERGY CREDITS (SINGLE FAMILY) OPTION DESCRIPTION CREDITS SF 3. HIGH EFFICIENCY HVAC EQUIPMENT OPTIONS Only one op�on from items 3.1 through 3.6 may be selected in this category. 3.1² 3.2² 3.3² 3.4 3.5² 3.6² 1.0 1.0 1.5 1.5 1.5 2.0 Energy Star rated (U.S. North) Gas or propane furnace with minimum AFUE of 95% or Energy Star rated (U.S. North) Gas or propane boiler with minimum AFUE of 90%.² Air-source centrally ducted heat pump with minimum HSPF of 9.5.³ Closed-loop ground source heat pump; with a minimum COP of 3.3 or Open loop water source heat pump with a maximum pumping hydraulic head of 150 feet and minimum COP of 3.6.³ Ductless mini-split heat pump system, zonal control: In homes where the primary space hea�ng system us zonal electric ha�ng, a ductless mini-split heat pump system with a minimum HSPF of 10.0 shall be installed and provide hea�ng to the largest zone of the housing unit.⁴ Air-source, centrally ducted heat pump with minimum HSPF of 11.0.⁴ Ductless split system heat pumps with no electric resistance heating in the primary living areas. A ductless heat pump system with a minimum HSPF of 10 shall be sized and installed to provide heat to entire dwelling unit at the design outdoor air temperature. To qualify to claim this credit, the building permit drawings shall specify the option being selected, the heated floor area calculation, the heating equipment type(s), the minimum equipment efficiency, and total installed heat capacity (by equipment type). 4.1 4.2 0.5 1.0 All supply and return ducts located in an uncondi�oned a�c shall be deeply buried in ceiling insula�on in accordance with Sec�on R403.3.7. For mechanical equipment located outside the condi�oned space, a maximum of 10 linear feet of return duct and 5 linear feet of supply duct connec�ons to the equipment may be outside the deeply buried insula�on. All metallic ducts located outside the condi�oned space must have both transverse and longitudinal joints sealed with mas�c. If flex ducts are used, they cannot contain splices. Duct leakage shall be limited to 3 cfm per 100 square feet of condi�oned floor area. Air handler(s) shall be located within the condi�oned space. HVAC equipment and associated duct system(s) installa�on shall comply with the requirements of Sec�on R403.3.7. Loca�ng system components in condi�oned crawl spaces is not permi�ed under this op�on. Electric resistance heat and ductless heat pumps are not permi�ed under this op�on. Direct combus�on hea�ng equipment with AFUE less than 80% is not permi�ed under this op�on. To qualify to claim this credit, the building permit drawings shall specify the op�on being selected and shall specify the hea�ng equipment type and shall show the loca�on of the hea�ng and cooling equipment and all the ductwork. ² An alternative heating source sized at a maximum of 0.5 W/sf (equivalent) of heated floor area or 500 W, whichever is bigger, may be installed in the dwelling unit. ³ To qualify to claim this credit, the building permit drawings shall specify the option being selected and shall specify the heating equipment type and the minimum equipment efficiency. ⁴ To qualify to claim this credit, the building permit drawings shall specify the option being selected and shall specify the heating equipment type and the minimum equipment efficiency. 4. HIGH EFFICIENCY HVAC DISTRIBUTION SYSTEM OPTIONS Prescriptive Path - Single Family 2018 Washington State Energy Code - R 7 CITY OF RENTON ꟾ DEVELOPMENT SERVICES DIVISION 1055 South Grady Way, Floor Six, Renton Washington 98057 ‌ 425.430.7200 2018 WSEC SINGLE FAMILY COMPLIANCE CHECKLIST TABLE 406.3 - ENERGY CREDITS (SINGLE FAMILY) OPTION DESCRIPTION CREDITS SF 5. EFFICIENT WATER HEATING OPTIONS Only one op�on from items 5.2 through 5.6 may be selected in this category. 5.1 5.2 5.3 5.4 5.5 5.6 0.5 0.5 1.0 1.5 2.0 2.5 A drain water heat recovery unit(s) shall be installed, which captures waste water heat from all and only showers, and has a minimum efficiency of 40% if installed for equal flow or a minimum efficiency of 54% if installed for unequal flow. Such units shall be rated in accordance with CSA B55.1 or IAPMO IGC 346-2017 and be so labeled.To qualify to claim this credit, the building permit drawings shall include a plumbing diagram that specifies the drain water heat recovery units and the plumbing layout needed to install it. Labels or other documenta�on shall be provided that demonstrates that the unit complies with the standard. Water hea�ng systems shall include one of the following:Energy Star rated gas or propane water heater with a UEF of 0.80.⁵ Water hea�ng system shall include one of the following:Energy Star rated gas or propane water heater with a minimum UEF of 0.91 orSolar water hea�ng supplemen�ng a minimum standard water heater. Solar water hea�ng will provide a rated minimum savings of 85 therms or 2000kWh based on the Solar Ra�ng and Cer�fica�on Corpora�on (SRCC) Annual Performance of OG-300 Cer�fied Solar Water Hea�ng Systems orWater Heater heated by ground source heat pump mee�ng requirements of Op�on 3.3.To qualify to claim this credit, the building permit drawings shall specify the op�on being selected and shall specify the water heater equipment type and the minimum equipment efficiency and, for solar water hea�ng systems, the calcula�on of minimum energy savings. Water hea�ng system shall include one of the following:Electric heater pump water heater mee�ng the standards for Tier I of NEEA’s advanced water ha�ng specifica�on orFor R-2 Occupancy, electric heat pump water heater(s), mee�ng the standards for Tier I of NEEA’s advanced water hea�ng specifica�on, shall supply domes�c hot water to all units. If one water heater is serving more than one dwelling unit, all hot water supply and recircula�on piping shall be insulated with R-8 minimum pipe insula�on.⁵ Water hea�ng system shall include one of the following: Electric heat pump water heater mee�ng the standards for Tier III of NEEA’s advanced water hea�ng specifica�on orFor R-2 Occupancy, electric heat pump water heater(s), mee�ng the standards for Tier III of NEEA’s advanced water hea�ng specifica�on, shall supply domes�c hot water to all units. If one water heater is serving more than one dwelling unit, all hot water supply and recircula�on piping shall be insulated with R-8 minimum pipe insula�on.⁵ Water hea�ng system shall include one of the following:Electric heat pump water heater with a minimum UEF of 2.9 and u�lizing a split system configura�on with the air-to-refrigerant heat exchanger located outdoors. Equipment shall meet Sec�on 4, requirements for all units, of the NEEA standard Advanced Water Hea�ng Specifica�on with the UEF noted above orFor R-2 Occupancy, electric heat pump water heater(s), mee�ng the standards for Tier III of NEEA’s advanced water hea�ng specifica�on and u�lizing a split system configura�on with the air-to-refrigerant heat exchanger located outdoors, shall supply domes�c hot water to all units. If one water heater is serving more than one dwelling unit, all hot water supply and recircula�on piping shall be insulated with R-8 minimum pipe insula�on.⁵ ⁵ To qualify to claim this credit, the building permit drawings shall specify the option being selected and shall specify the water heater equipment type and the minimum equipment efficiency. Prescriptive Path - Single Family 2018 Washington State Energy Code - R 8 CITY OF RENTON ꟾ DEVELOPMENT SERVICES DIVISION 1055 South Grady Way, Floor Six, Renton Washington 98057 ‌ 425.430.7200 2018 WSEC SINGLE FAMILY COMPLIANCE CHECKLIST TABLE 406.3 - ENERGY CREDITS (SINGLE FAMILY) OPTION DESCRIPTION CREDITS SF 6. RENEWABLE ELECTRIC ENERGY OPTION 6.1 1.0For each 1200 kWh of electrical genera�on per housing unit provided annually by on-site wind or solar equipment a 1.0 credit shall be allowed, up to 3 credits. Genera�on shall be calculated as follows: For solar electric systems, the design shall be demonstrated to meet this requirement using the National Renewable Energy Laboratory calculator PVWATTs or approved alternate by the code official. Documentation noting solar access shall be included on the plans. For wind generation projects designs shall document annual power generation based on the following factors: The wind turbine power curve; average annual wind speed at the site; frequency distribution of the wind speed at the site and height of the tower. To qualify to claim this credit, the building permit drawings shall specify the option being selected and shall show the photo voltaic or wind turbine equipment type, provide documentation of solar and wind access, and include a calculation of the minimum annual energy power production. 7.1 0.5All of the following appliances shall be new and installed in the dwelling unit and shall meet the following standards: Dishwasher - Energy Star rated Refrigerator (if provided) - Energy Star rated Washing Machine - Energy Star rated Dryer - Energy Star rate, ventless dryer with minimum CEF ra�ng of 5.2 To qualify for this credit, the building permit drawings shall specify the op�on being selected and shall show the appliance type and provide documenta�on of Energy Star compliance. At the �me of inspec�on, all appliances shall be installed and connected to u�li�es. Dryer ducts and exterior dryer vent caps are not permi�ed to be installed in the dwelling unit. 7. APPLIANCE PACKAGE OPTION