Weatherization Manual Policies and Procedures Supporting Documents for United States Department of Energy (doe) United States Department of Health and Human Services (hhs) Bonneville Power Administration



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  • CHAPTER 5 PROVIDING WEATHERIZATION SERVICES




  • Section 5.2 Energy Audits

  • Policy 5.2.1-SF Energy Audit

  • Policy 5.2.1-MF Multifamily Energy Audit (not included)

  • Policy 5.2.2 Energy Audit Pre-Assessment (Pre-Audit)

  • Policy 5.2.3-SF Diagnostic Testing

  • Policy 5.2.3-MF Multifamily Diagnostic Testing(not included)

  • Policy 5.2.4-SF Priority List (PL)

  • Policy 5.2.5 Targeted Residential Energy Analysis Tool (TREAT)





  • Effective Date: October 20, 2016 Page 1 of 5

  • Weatherization Policy

  • See also:

  • Policy 7.1, Local Agency Inspection of Weatherization Work

  • Policy 5.2.4-SF, Priority List

  • Policy 5.2.5, Targeted Residential Energy Analysis Tool (TREAT)

  • Policy 5.2.3 Diagnostic Testing

  • Policy 9.4 Combustion Safety Testing

  • Policy 9.3 Indoor Air Quality – Mechanical Ventilation

  • Policy 9.6, Biologicals and Unsanitary Conditions, including Mold and Moisture

  • Exhibit 5.S2, Pollution Source Survey

  • Policy 5.2.2, Pre-Assessment (Pre-Audit)

  • Exhibit 1.3.3A, Wx Program Property Owner-Occupant/Agency Agreement

  • Exhibit 1.3.3B, Wx Program Rental Property Owner/Agency Agreement

  • Exhibit 1.3.3C, Brochure: Owner/Agency Agreement & WAP

  • Exhibit 1.3.3D, Brochure: Tenant Rights and WAP

  • Section 5.5 Deferral Standards

  • Chapter 6, Allowable Costs,

  • Exhibit 5.S3A, Diagnostic Test Report

  • Exhibit 5.3.1A, Combustion Safety Form

  • Exhibit 5.1A, Priority List of Weatherization Measures

  • Chapter 9, Health & Safety

  • Replaces: Policy 5.2.1 – July 2015 Field Guide, Retrofitting Washington

  • Policy 5.2.1 Energy audits

    1. Energy Audits

    1. All single family and multi-family dwellings must receive a comprehensive, on-site, energy audit prior to receiving weatherization services.

    1. Scope of Energy Audit

    1. The Local Agency shall evaluate the dwelling for the following:

      1. Cost effective energy efficiency improvements.

      2. Health and safety issues that may negatively affect occupants.

      3. Building durability issues that may negatively affect or prohibit installation of energy efficiency measures.

      4. Comfort issues that may cause increased energy use.



    1. Wx Policy 5.2.1 Energy Audits Page 2 of 5

    1. Energy Auditor

    1. A trained and qualified auditor, someone other than the Quality Control Inspector (QCI) conducting final inspections, shall conduct energy audits and develop the Scope of Work (SOW).

    2. Exception: Local Agencies that are unable to meet this requirement shall notify Commerce in writing with their alternative inspection plan and receive Commerce written approval. See Policy 7.1, Local Agency Inspection of Weatherization Work for more information on requesting an Auditor/Inspector Separation Waiver.

      1. Must be certified as either a Building Analyst (BA) or a Quality Control Inspector (QCI) by the Building Performance Institute (BPI).

      2. Training and testing will be provided by the Peer Circuit Rider/Building Performance Center.

      3. Newly hired auditors must have work reviewed including on-site review by a certified BA or QCI until such time that they become certified.

    1. Energy Audit Requirements

    1. All energy audits will include:

    1. Energy Audit Tool: Local Agencies must choose one energy audit tool for each Wx project. Do not use both on a single Wx project.

        1. Priority List. See Policy 5.2.4, Priority List

        2. TREAT. See Policy 5.2.5, Targeted Residential Energy Analysis Tool (TREAT)

    1. Diagnostic testing. See Policy 5.2.3 Diagnostic Testing

    2. Combustion safety testing when combustion appliances are present. See Policy 9.4 Combustion Safety

    3. Indoor Air Quality – Mechanical Ventilation. See Policy 9.3 Indoor Air Quality – Mechanical Ventilation

    4. Mold Assessment. See Policy 9.6, Biologicals and Unsanitary Conditions, including Mold and Moisture

    5. Pollution Source Survey. See Exhibit 5.S2, Pollution Source Survey example.

    6. Pre-Assessment. See Policy 5.2.2, Pre-Assessment (Pre-Audit)

    1. Wx Policy 5.2.1 Energy Audits Page 3 of 5

    1. Analysis of base load costs: The Local Agency shall analyze base load costs for each dwelling unit when fuel histories are available. Base load cost data shall be used to determine cost-effective energy conservation and energy education opportunities.

    1. Review of Energy Audit with client

    1. The Local Agency shall review the findings of the energy audit and anticipated scope of work with the occupants of the dwelling. Documentation of the audit findings and anticipated scope of work shall be retained in the client file.

    2. Exception: Multi-family dwellings require the local agency to review the findings of the energy audit and anticipated scope of work with the owner. Local agency shall coordinate with the owner to ensure tenants are properly notified of the anticipated scope of work.

    1. Historical preservation considerations

    1. All energy audits shall note any historical preservation requirements and shall consider these requirements when determining the scope of work that will be used to complete weatherization work on the dwelling unit.

    1. Client authorization

    1. The Local Agency shall obtain a signature from the client (occupant of the dwelling unit), and the landlord (if it is a rental dwelling) authorizing installation of the measures to be performed on the eligible dwelling prior to work commencing. A copy of the signed authorization shall be retained in the client file.

    2. Exceptions:

      1. Low-cost/No-cost measures may be installed before audit findings are reviewed with the occupants and landlord.

      2. Multi-family dwellings require the local agency to obtain only the owner’s signature. The local agency must coordinate with the owner to ensure tenants are properly notified to allow access for installation of measures and necessary inspections.

    1. References:

      1. Exhibit 1.4.1A, Wx Program Property Owner/Agency Agreement

      2. Exhibit 1.4.1B, Wx Program Property Owner/Agency Agreement for Multi-Family Buildings

      3. Exhibit 1.4.1C, Owner/Agency Agreement Brochure

    1. Wx Policy 5.2.1 Energy Audits Page 4 of 5

      1. Exhibit 1.4.1D, Tenant Rights and the Weatherization Assistance Program Brochure.

    1. Energy Audit documentation

    1. The Local Agency shall document the results of all energy audits in the client file. This documentation shall describe the condition of the home at the time of the energy audit and justification for the measures as outlined in the scope of work.

    2. Exception: If during the energy audit assessment it is determined the best course of action is to defer service per Commerce policy Section 5.5 Deferral Standards, a complete energy audit is not required.

    1. Photographic record

    1. The Local Agency shall record the condition of the dwelling by taking a minimum of two (2) electronic or printed photographs of the dwelling’s exterior elevation that capture the essence of the dwelling. These photographs shall be dated and retained. These photos, or their location, must be documented in the client file.

    2. Allowable Costs

    3. Home energy audits are an allowable cost under DOE, HHS, BPA, and MM funds. See Chapter 6, Allowable Costs, for allowable expenditures.

    4. Specific fund source limitations or allowances are as follows:

    5. BPA: Units must be electrically heated in BPA service territory.

    6. B. Procedure

    1. Programmatic

      1. Client files must include the following documentation:

        1. List of repairs needed to protect weatherization materials or their function.

        2. List of health and safety hazards identified prior to the installation of weatherization materials.

        3. An Exhibit 5.S3A, Diagnostic Test Report must be filled out and be present in the client file. For multi-family dwellings type 2-5 refer to the Multi-Family Supplement Draft Guidance for Managing the Low-Income Weatherization Program.

        4. An Exhibit 5.3.1A, Combustion Safety Form must be filled out for each combustion appliance and be documented in the client file.

    1. Wx Policy 5.2.1 Energy Audits Page 5 of 5

        1. Energy audit assessment information including but not limited to: square footage of the dwelling, type of dwelling, existing levels of insulation, type and condition of space heating system and water heating system, and other necessary information to support any measures installed using an approved priority list or TREAT.

        2. Ownership status, owner/agency agreement, and owner cash contribution.

        3. Historic preservation status.

        4. Previous weatherization, including date(s) work performed and installed weatherization measures.

        5. A comprehensive and weatherization-specific scope of work.

        6. Other applicable information as collected by the local agency, for example: pre-weatherization billing data, energy intensity, and client lifestyle assessment.
          NOTE: If a TREAT audit is utilized all documentation supporting agency inputs is required in the project file. For multi-family (five units or more), import or enter the most recent energy bill data (minimum 12 months) to calibrate (true up) the TREAT model.

        7. Signed client and property owner authorization, as applicable.

        8. Verification installed measures have an SIR of 1.0 or greater as determined by TREAT or the Priority List of Weatherization Measures.

        9. Delivery of consumer conservation education, individual or classroom.

    1. Exception: For multi-family projects, at a minimum the Consumer Conservation Education requirement may be met by door hanger or packets on each unit.

        1. All necessary measure-specific justification.

      1. Results of all electronic audits must be retained in the local agency’s central electronic file.

      2. See Exhibit 5.1A, Priority List of Weatherization Measures.

      3. See Chapter 6, Allowable Costs.

      4. See Chapter 9, Health & Safety.

    1. Required Installation Standards and Materials Specifications

    1. See Field Guide, Retrofitting Washington



    2. Policy 5.2.2 Energy Audit pre-assessment (Pre-audit)
    3. A. Policy


    1. Local agencies shall perform an Energy Audit Pre-Assessment for eligible clients.

    2. Local agencies may choose to do the pre-assessment as a Pre-Audit prior to the Energy Audit with a pre-assessor or as part of the Energy Audit.

    3. Pre-assessors do not require BPI certification.

    4. Pre-Assessments may include Low-cost/No-cost measures, Consumer Conservation Education, and Smoke and CO detectors.

    5. Energy Audit Pre-Assessment (visual inspection), shall include inspecting all accessible areas and systems as follows:

    1. Attics

    2. Crawlspaces

    3. Building envelope

    4. Air sealing opportunities

    5. Roofs

    6. Insulation levels

    7. Heating systems

    8. Ventilation systems

    9. Interior surfaces

    10. Appliances

    11. Lighting (including common areas of multi-family dwellings)

    12. Home energy bills

    13. Stairs, ramps, landings, handrails

    14. Other structural elements

    15. Plumbing and electrical where insulation may be installed

    16. Plumbing and electrical in areas where humans may come into contact

    17. Smoke alarms and CO detectors



    1. Effective Date: July 2016 Page 1 of 3

    2. Weatherization Policy

    3. See also:

    4. Exhibit 5.S3, Diagnostic Test Report

    5. Policy 5.6.1, Heating and Cooling Ducts

    6. Policy 9.3 Indoor Air Quality – Mechanical Ventilation

    7. Policy 5.6.2, Mechanical Ventilation Ducts

    8. Variance #12 – SWS 3.1001.9h-3.1201.7h-and-3.1201.8h

    9. Variance #17 – SWS 5.3003.3

    10. Replaces: Policy 5.2.3 - July 2015 Variance #19 – SWS 6.6201.2a

    11. POLICY 5.2.3-SF Diagnostic Testing

    1. The Local Agency must perform diagnostic testing on all dwelling units prior to installation of weatherization measures and upon completion of each project. An
      Exhibit 5.S3, Diagnostic Test Report must be filled out and be present in the client file.



    1. Variance #17: DOE granted a variance from SWS Section 5.3003.3 Evaluating Air Flow allowing: WA Standard which requires a client interview, confirmation of flow at each register, measurement of heat rise, pressure pan, and room pressures. Unless duct systems are missing or destroyed and require repair or replace, WA will air seal but not resize ducts.

      1. Single point blower door test: The Local Agency must perform a single point blower door test at 50pa before any weatherization measures are installed and at the conclusion of any project where air sealing, building shell alteration, duct sealing, insulation, or any other measure that may alter the natural or mechanical air changes of the home is performed. Results of pre- and post-weatherization blower door testing must be documented in the client file.

    1. Exception: Multi-family dwellings five units and greater do not require blower door testing. Blower door testing may be beneficial in low rise (3 stories or fewer), buildings with 25 units or less, and units with doors to the outside (garden apartments).

    2. Variance #12: DOE granted a variance from SWS Sections 3.1001.9h Sealing access Doors, 3.1201.7h, and 3.1201.8h Repair, Maintenance, and Weather Stripping of Doors allowing: Blower door testing with feel, smoke, or infrared cameras to locate any air leakage sites around doors, windows, and accesses.

        1. Location: The Local Agency must install the blower door in a doorway that provides for the most accurate test. The location of the doorway where the tests are taken must be documented in the client file.

    1. Wx Policy 5.2.3 Diagnostic Testing Page 2 of 3

        1. Baseline data: The Local Agency must document baseline information, such as wind speed, temperature, etc., using a diagnostic test report. See Exhibit 5.S3, Diagnostic Test Report.

      1. Zonal pressure testing: The Local Agency must perform zonal pressure testing in all zones (attics, crawlspaces, garages, unconditioned crawlspaces, etc.) with more than 50 sq. ft. of common surface with the intended thermal boundary of the dwelling. The test must be performed prior to the installation of weatherization measures that alter the shell of the dwelling. Zonal pressures must be recorded with reference to (WRT) the living space of the home. Post zonal pressure testing must be done before the installation of attic or crawlspace ventilation. Pre- and post-zonal pressure measurements must be documented in the client file.

        1. Duct system testing: The Local Agency must perform pressure pan (or pressure block) testing of all forced air duct systems. Duct system standard for tightness is 1pa or less at each supply register. The standard for return plenums is 5pa or less. See Policy 5.6.1, Heating and Cooling Ducts. Post testing of ducts in enclosed cavities, such as wall bays, dropped ceilings, floor joists, mobile home bellies, etc., must be performed prior to insulating those cavities. Pre- and post-duct pressure pan measurements must be recorded in the client file.

    1. Exceptions:

    1. Duct systems that are entirely within the heated building envelope and not connected to any exterior wall, attic or ceiling building component or buffered zone, are not required to be tested.

    2. The Local Agency may use a duct tester to perform duct tightness testing. The standard for tightness is 100 cfm leakage to outside at 25pa.

    3. If asbestos tape is observed inside the duct, no diagnostic testing must be performed prior to encapsulation.

      1. Dominant duct leak testing: The Local Agency must perform dominant duct leakage testing on all homes with ducted forced air heating distribution systems when any part of the system is located outside the thermal and pressure boundary. Dominant duct leakage testing must be performed on mobile homes. Pre- and post-dominant duct leakage measurements may be recorded in the client file. Standard for dominant duct leakage is no more than 1.5pa or 100cfm of leakage to outside.

    1. Wx Policy 5.2.3 Diagnostic Testing Page 3 of 3

      1. Room-to room pressure differential testing: The Local Agency must test and record the pressure differential between rooms with supply, return, or both ducts and the main body of the dwelling. Pressure differentials of more than 5pa must be corrected. Pre- and post-pressure differential measurements must be recorded in the client file.



    1. Variance #19: DOE granted a variance from SWS Section 6.6201.2a Room Pressure Testing allowing: WA Standard which for existing systems requires mitigation of excess room pressures when they cause combustion appliances to exceed CAZ depressurization limits and when room pressure imbalance exceeds 5pa,. For new systems installed, WA must conform to the stricter 3pa limit.

    1. Mechanical Ventilation: See Policy 9.3, Indoor Air Quality – Mechanical Ventilation and Policy 5.6.2, Mechanical Ventilation Ducts

    2. Diagnostic testing equipment: The Local Agency must:

      1. Use a digital manometer to perform all pressure diagnostic testing measurements.

      2. Have blower door(s) maintained and digital manometer(s) calibrated as recommended by the manufacturer.

      3. Keep on file a record of maintenance and calibration for all diagnostic equipment.



    1. Effective Date: July 2017 Page 1 of 4

    2. Weatherization Policy

    3. See also:

    4. Exhibit 5.1A(1), PL CALC – Site Built

    5. Exhibit 5.1A(2), PL CALC – Mobile Homes

    6. Exhibit 5.1(A3), Climate Zone Map and Tables

    7. Exhibit 5.1A(4), Priority Lists

    8. Exhibit 5.1A(6), Statewide Average Costs

    9. Exhibit 5.1B, WxM Ancillary Items, WRR, and H&S

    10. Replaces: Policy 5.2.4 July 2016 Policy 5.2.5, Targeted Residential Energy Analysis Tool (TREAT)

    11. POLICY 5.2.4-SF PRIORITY LIST (PL)

    1. Using Priority Lists:

    1. DOE approved Priority Lists (PLs) for use on site built dwellings (single family (one, one and one-half, and two story site built buildings)) and mobile home dwellings (single- and double-wide). See Exhibit 5.1A(4), Priority Lists.

      1. Local Agencies must determine the applicable PL for each Wx project: climate zone, building type, heating type, and building configuration.

      2. Local Agencies must implement Priority List Weatherization Measures (PL WxM) in the order in which they are listed on the applicable PL.

      3. The total Weatherization-Related Repairs (WRR) costs of a Wx project must not exceed the cumulative WxM costs.

    1. To calculate the Wx project WRR allowance, for each WxM, add the lesser of either the WxM cost (WxM$) or the calculation ((WxM$ x WxM SIR) – WxM$)].

    2. WRR allowance = [the lesser of WxM1$ or ((WxM1$ x WxM1SIR) – WxM1$)]
      + [the lesser of WxM2$ or ((WxM2$ x WxM2SIR) – WxM2$)
      + [the lesser of WxM3$ or ((WxM3$ x WxM3SIR) – WxM3$) + ...

      1. Local agencies must use leveraged funds or the WRR allowance to bring the Air Sealing SIR to 1.0 or greater, for climate zone 1, gas heated mobile homes, (i.e. Z1GS and Z1GD).

    1. Using Priority List Calculation Sheet:

    1. Local agencies may use the Priority List Calculation Sheet (PL CALC) instead of the PLs to determine the PL WxM and to calculate the WRR allowance and leveraged funds. See Exhibit 5.1A(1), PL CALC – Site Built and Exhibit 5.1A(2), PL CALC – Mobile Homes

      1. Each individual PL WxM and the total package must have an SIR > 1.0.

    1. Wx Policy 5.2.4-SF Using Priority List (PL) Page 2 of 4

      1. Local Agencies must implement Priority List Weatherization Measures (PL WxM) in descending SIR order as listed on the Outputs tab.

      2. The total Weatherization-Related Repairs (WRR) costs of Wx project must not exceed the Total Package – Allowable WRR Cost Pool calculated in PL CALC.

      3. Leveraged funds may be used to reduce weatherization fund source investments in order to bring the SIR to 1.0 or greater.

      4. The percent gaps for wall insulation is the empty wall cavity percentage of the total wall cavity area that could be insulated. The total wall cavity area does not include windows or framing.

    1. Skipping PL WxM is Prohibited:

    1. Local agencies must not skip eligible and allowable PL WxM.

    2. Exceptions:

      1. The existing condition(s) in the home meets or exceeds the PL WxM.

      2. The specific PL WxM presumed existing condition (See #5c) does not match the actual existing condition(s) in the home and does not apply.

      3. The Wx project is implementing another PL option for that PL WxM.

    1. Stopping Point of PL:

    1. If the local agency does not implement a listed WxM for reasons other than the above exceptions, no additional WxM listed lower on the PL can be implemented using the PL as justification.

    1. Requiring the Alternative Energy Audit - TREAT: Local agencies must use TREAT instead of the PL if any of the following apply:

      1. Non PL WxM: To install measures not included in the PL requires the use of TREAT to justify a Wx project and the investment by the Wx program. Failure to use TREAT to justify a Wx project that includes measures not included in the PL will result in disallowed costs.

      2. Inaccessible WxM: If a local agency is unable to install a measure because it is not accessible, no additional WxM listed lower on the PL can be implemented using the PL as justification. To perform a complete Wx project and install more measures listed lower on the PL than the inaccessible measure, the local agency must use TREAT to justify the Wx project.

    1. Wx Policy 5.2.4-SF Using Priority List (PL) Page 3 of 4

      1. Client Refusal: If a client declines a WxM above the Air Sealing or Duct Sealing on the PL, the local agency must use TREAT to justify the Wx project.

      2. Presumed Existing Conditions: If the actual existing condition in the home does not match any of the available PL WxM presumed existing condition(s) and skipping that PL WxM would not result in a quality Wx project.

    1. The following are the presumed existing condition(s), required final insulation levels, clarifications, and exceptions for specific PL WxM:

        1. Sloped Ceiling Insulation: The PL WxM assumes existing R-0 cathedral ceiling insulation.

        2. Knee Wall Insulation: The PL WxM assumes existing R-0 knee-wall insulation.

        3. Duct Insulation: The PL WxM assumes existing R-0 duct insulation and a final insulation level of R-19.

    1. Exception: If it is not possible to insulate ducts to R-19, it is acceptable to insulate ducts to R-11. Document the reasons in the client file.

        1. Ductless Heat Pump: This PL WxM assumes existing electric resistance heating.

        2. 90%+ Natural Gas Furnace: This PL WxM assumes an existing 70% Natural Gas Furnace.

        3. Water Pipe Insulation: This PL WxM assumes an existing R-0 pipe insulation and a final insulation level of R-3. It applies to both hot and cold water pipes. It applies to the first six feet of water pipe from the water heater and the house distribution water piping.

        4. Water Heater Insulation: This PL WxM assumes an existing R-0 water heater insulation and a final insulation level of R-11.

    1. Exception: Do not insulate any water heater with a label that prohibits insulation. Document the reasons in the client file.

      1. Other WxM: To install measures not specifically permitted by Wx policy requires the use of TREAT to justify a Wx project and the investment by the Wx Program. Failure to use TREAT to justify a Wx project that includes measures not included in the Wx policy will result in disallowed costs.

    1. Wx Policy 5.2.4-SF Using Priority List (PL) Page 4 of 4

    1. Using Wx Costs:

    1. Local agencies must calculate and maintain their Wx costs for materials and labor (including any applicable prevailing wage rates), for use in the Priority List auditing process, PL CALC.

      1. PL WxM include ancillary items and their costs. See Exhibit 5.1B, WxM Ancillary Items, WRR, and H&S

    1. Exception: Local agencies may use the statewide average costs for materials and labor. See Exhibit 5.1A(6), Statewide Average Costs.

    1. Ensuring Quality Wx Projects:

    1. Local agencies must ensure each home’s scope of work results in quality cost effective energy efficiency choices.

      1. Local agencies must implement the most energy efficient option possible when more than one PL option for the WxM is available (e.g. Choose Attic insulation: Add R-49 (R-0->R-49), instead of Add R-38 (R-0->R-38), if the attic framing will accommodate R-49).

      2. Air Sealing: All Wx Projects must include Air Sealing: Priority air sealing and Blower Door guided cost-effective air sealing.

    1. Exceptions: Air Sealing can be limited by

        1. The cost effectiveness guideline,

        2. If it creates a CAZ issue, or

        3. If there is an ACM issue.

      1. Duct Sealing: All Wx Projects must include Duct Sealing.

    1. Documenting PL Wx Projects

    1. Local agencies must document each PL Wx project in the client file with either PL CALC or other documentation.

    1. Installing WxM

    1. Local agencies must install WxM in the order dictated by workflow.



    2. Effective Date: July 2016 Page 1 of 5

    3. Weatherization Policy

    4. See also:

    5. Policy 5.2.4-SF, Priority List (PL)

    6. Replaces: Policy 5.2.5 (PM 15-06 - August 18, 2015) Exhibit 5.1B, WxM Ancillary Items, WRR, and H&S

    7. POLICY 5.2.5 Targeted Residential Energy Analysis Tool (TREAT)

    1. Commerce Adopted TREAT as the Authorized Wx Energy Audit Tool:

    1. TREAT (Targeted Residential Energy Analysis Tools) is the authorized Weatherization (Wx) Program energy audit tool. It is required for analysis of any type of measure, or dwelling unit, not specifically covered by a DOE approved Washington State Low-Income Weatherization Program Priority List. See Policy 5.2.4, Priority List

    2. Wx Projects with Weatheriztion Measures (WxM) not included in the Priority List or specifically permitted by policy, will require use of TREAT to justify the investment by the weatherization program. Failure to use TREAT to justify a Wx project that includes measures not included in the Priority List, or by other policy, will result in disallowed costs.

    1. Using Wx Costs:

    1. Local agencies must calculate and maintain their Wx costs for materials, labor (including any applicable prevailing wage rates), and fuels annually, for use in the TREAT auditing process.

      1. Weatherization Measures (WxM) include ancillary items and their costs. See Exhibit 5.1B, WxM Ancillary Items, WRR, and H&S

    1. Ensuring TREAT Proficiency:

    1. Local agencies are responsible for ensuring that all staff performing computerized energy audits acquire and maintain proficiency using TREAT.

    1. Developing Scope of Work:

    1. Local agencies must use TREAT to develop a scope of work.

    2. Exception: Use of the Priority List. See Policy 5.2.4, Priority List

    3. Wx Policy 5.2.5 Using TREAT Page 2 of 5

    1. Assessing Potential Wx Measures:

    1. Local agencies must include and improve the energy efficiency for the following Wx Measures in their TREAT model(s):

      1. Air Sealing

      2. Ceiling Insulation

      3. Wall Insulation

      4. Floor Insulation

      5. Windows and Doors

      6. Heating and Cooling Systems

      7. Duct Sealing

      8. Duct Insulation

      9. Water Heater

      10. Water Pipe

      11. Refrigerator

      12. Lighting

      13. Showerheads

      14. Faucet Aerators

    1. Exception: Clients may decline a Wx Measure. The Local Agency must re-run their improvements TREAT model without the Wx Measure declined. Client refusal must be documented in the client file.

    1. Implementing WxM in Cost Effectiveness Descending Order:

    1. Local agencies must implement the most cost-effective measures as determined by TREAT in descending order of cost effectiveness, subject to funding availability.

    2. Wx Policy 5.2.5 Using TREAT Page 3 of 5

    1. Calculating the Savings to Investment Ratio (SIR):

      1. Local agencies must install individual conservation measures (Weatherization Measures (WxM)) with a SIR of 1.0 or greater (SIR > 1).

    1. Exceptions: A WxM with a SIR > 1 can be deferred if the

        1. Local agency does not have adequate funding to install the measure, or

        2. Client refuses measure

      1. Within TREAT, on the “Package Wizard” screen, the individual Wx Measures and the total package of measures must each have a SIR > 1.

      2. Local agencies must include the cost of Weatherization Related-Repairs (incidental repairs) in the cost of the package of measures installed in a dwelling.

      3. Health and Safety Measures are NOT included in the SIR calculation.

    1. Using Leveraged Funds:

    1. Leveraged funds may be used to reduce weatherization fund source investments in order to bring the SIR > 1.

    1. Justifying Weatherization-Related Repairs:

    1. Weatherization-Related Repairs (WRR) do not require an individual SIR > 1. However, Local agencies must justify WRR costs by demonstrating they are cost-effective.

    2. Local agencies must account for WRR costs by describing them as “visual inspections” in TREAT. Add WRR costs as “improvements” into a TREAT package. Such improvements will generate individual SIRs in TREAT as “N/C” (not calculated) or 0.

      1. On the “Package Wizard” screen:

        1. Each WxM within the TREAT package must have an individual SIR > 1, and

        2. The TREAT package (including the WRR costs) must have a package SIR > 1.

    1. Exception: An alternate method to account for WRR cost is to simply add the WRR cost to the related WxM. On the “Package Wizard” screen, if the individual SIR > 1 and the package SIR > 1, then the project qualifies for implementation economically.

    1. Maintaining TREAT (Computerized Energy Audit):

    1. Local agencies must maintain and use the most current version (including updates) of TREAT software.

    2. Wx Policy 5.2.5 Using TREAT Page 4 of 5

    1. Defining Parameters and Default TREAT Inputs:

    1. Local agencies must use the following key project parameters or default inputs. Justification for any variance from these parameters must be clearly documented in the client file project notes.

      1. Fuel costs: Use current costs for applicable fuel types used at the project site based on local survey. Update current fuel costs annually, at a minimum.

      2. Installed measure costs: Local agencies must calculate Installed Measure Costs (IMC) incorporating any applicable prevailing wage rates. For use in TREAT, IMCs are verifiable material and labor costs to install Wx Measures and WRR Measures.

      3. Daily and long term weather: Use nearest available weather station(s). Other stations may be substituted based on justification of heating degree days.

      4. Air Infiltration: Will be based on blower door diagnostics.

    1. Exception: Multi-family dwellings five units and greater do not require blower door testing. If blower door testing is not done, the TREAT default of 0.6 ACH or justified alternative will be used.

      1. Thermostat Setting: Use actual verified set points and occupancy data. If actual data cannot be verified, standard occupied temperature of 70 degrees F and unoccupied temperature of 60 degrees F (includes sleep) must be used. Standard number of occupied hours is 16 per day.

      2. Number of occupants: Use actual verified occupancy data. If actual data cannot be verified, standard occupancy of 1.5 people per bedroom must be used. For dwellings less than five units, standard occupancy may be calculated based on number of bedrooms plus one occupant.

      3. Surfaces and spaces: Use actual energy audit assessment to determine structural characteristics and thermal boundaries. TREAT allows for combining surfaces or spaces based on significant common characteristics.

      4. Windows and doors: Use actual project assessment to determine size, type, and location.

    1. Wx Policy 5.2.5 Using TREAT Page 5 of 5

      1. Lifespan: Use the following Measure Life defaults:

    1. Measure

    1. Measure Lives



    1. Mobile Homes

    1. Site Built

    1. Air Sealing

    1. 25

    1. 45

    1. Ceiling Insulation

    1. 25

    1. 45

    1. Floor Insulation

    1. 25

    1. 25

    1. Wall Insulation

    1. 25

    1. 45

    1. Rigid Insulation

    1. 25

    1. 45

    1. Steel Doors

    1. 15

    1. 15

    1. Mobile Home Doors

    1. 15

    1. N/A

    1. Rim Joist Insulation

    1. N/A

    1. 45

    1. Windows

    1. 20

    1. 20

    1. Storm Windows

    1. 15

    1. 15

    1. Lighting

    1. 10

    1. 10

    1. Water Heater

    1. 15

    1. 15

    1. Duct Sealing

    1. 15

    1. 20

    1. Duct Insulation

    1. 15

    1. 20

    1. Refrigerators

    1. 15

    1. 15

    1. Furnace Replacement

    1. 15

    1. 20

    1. Ductless Heat Pump

    1. 20

    1. 20

    1. Ducted Heat Pump

    1. 20

    1. 20

    1. Shower Heads

    1. 15

    1. 15



      1. Fans: Include all building mechanical airflow.

      2. Base-load: Use actual verified data from the energy audit assessment, TREAT defaults, or a justified combination.

      3. Billing Analysis and True Up: Import or enter the most recent energy bill data (minimum 12 months) to calibrate (true up) the TREAT model.

    1. Exception: For single family, small multi-family (four units or less), and mobile home dwellings the billing analysis TREAT true up is optional. It is strongly recommended, but not required.

    1. Documenting TREAT Wx Projects: Local agencies must document each TREAT Wx project in the client file with the TREAT computer file (*.tpg).

    2. Installing WxM: Local agencies must install WxM in the order dictated by workflow.
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