Appendix C (Informative)
- 28 Jun 2022
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Appendix C (Informative)
- Updated on 28 Jun 2022
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General Guidelines for Determining Energy Conservation Measure (ECM) Service Lifetimes and Maintenance Fractions
| Improvement Category | ECM Life | Maint. Frac. |
|---|---|---|
| Air Sealing, Ducts | 20 | 0 |
| Air Sealing, Envelope | 30 | 0 |
| Attic, Ventilation | 30 | 0 |
| Attic, Radiant Barrier | 30 | 0 |
| Color, Roof Shingles | 15 | 0 |
| Color, Wall Paint | 10 | 0 |
| HVAC, Replacement | 15 | 0 |
| Furnace, Replacement | 20 | 0 |
| Hot Water, Heat Pump | 15 | 0.009 |
| Hot Water, Heat Recovery | 15 | 0 |
| Hot Water, Pipe Insulation | 15 | 0 |
| Hot Water, Tank Wrap | 12 | 0 |
| Hot Water, Solar, Direct | 40 | 0.011 |
| Hot Water, Solar, ICS | 40 | 0.004 |
| Hot Water, Solar, Indirect | 40 | 0.011 |
| Hot Water, Standard System | 12 | 0 |
| Hot Water, Tankless, Gas | 12 | 0.024 |
| Insulation, Block Wall | 40 | 0 |
| Insulation, Ceiling | 40 | 0 |
| Insulation, Frame Wall | 40 | 0 |
| Lighting, High Efficiency | 5 | 0 |
| Pool Pump, High Efficiency | 15 | 0 |
| Refrigerator, Replacement | 15 | 0 |
| Showers, Low Flow | 15 | 0 |
| Window, Replacement | 40 | 0 |
| Window, Film Tinting | 15 | 0 |
| Window, Solar Screen | 15 | 0 |
