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Kittitas County Courthouse Energy Audit <br />5.3 MECHANICAL ECMS <br />Table 5-3 Mechanical ECM Annual Savings <br />Energy <br />Energy <br />Cost <br />Implementation <br />Simple <br />Description <br />Savings <br />Savings <br />Savings <br />Cost <br />Payback <br />Notes <br />(kWh/yr) <br />(CCF/yr) <br />($/yr) <br />(years) <br />Maintenance <br />1,204 <br />545 <br />$765 <br />$3,000 <br />3.9 <br />1,2,4 <br />Diffuser <br />1,178 <br />0 <br />$93 <br />$3,480 <br />37.4 <br />1,2,5 <br />Replacement <br />Controls <br />25,189 <br />0 <br />$1,990 <br />$4,600 <br />2.3 <br />1,6 <br />Retro- <br />8,010 <br />1,635 <br />$2,644 <br />$33,750 <br />12.8 <br />1,3 <br />commissioning <br />Notes <br />1. Cost savings based on estimated electricity cost of $0.08 per kWh. <br />2. Implementation cost based on fixture replacement or retrofit by maintenance staff. <br />3. Retro-commissioning may reduce electricity and gas consumption by as much as 15%. <br />4. Maintenance to include cleaning and combing of air handlers and mini -split exterior <br />coils, replacement of filters, and cleaning of duct interiors. <br />5. Removal of combination duct diffuser and light fixture units, and replacement with <br />stand-alone light fixtures and air diffusers. <br />6. Installation and programming thermostats to an occupied/unoccupied cycle. <br />5.4 PLUMBING ECMS <br />Table 5-3: Plumbing Annual Savings <br />ECM Annual Savings Summary <br />Water <br />Energy <br />Cost <br />Simple <br />Implementation <br />ECM # <br />Description <br />Savings <br />Savings <br />Savings <br />Payback <br />Notes <br />Cost ($) <br />(gal) <br />(MMBtu) <br />($) <br />(years) <br />ECM-P-1 <br />Install Water <br />- <br />$1,300 <br />$26,000 <br />19.7 <br />1,2 <br />Conserving <br />550,000 <br />Fixtures <br />Project Number 22-084 25 <br />October 28, 2025 <br />