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New Chiller and Boiler Plants, New Fan Coils (ECM), New ERVs DDC Compared to Existing Chiller and Boiler Plants, New ERVs and VRF, DDC <br />Option 2 NPV <br />Additional Investment <br />100,000 <br />Annual Operating Savings (Year one rates <br />0 <br />Simple Payback Period <br />y <br />(100,000) <br />_ _ _ - <br />Return on Investment <br />tum)(200,000) <br />Option 1 Net Present Costco <br />(300,000) <br />Option 2 Net Present Cost <br />V <br />z (400,000) <br />- <br />- <br />20 Year Net Present Savings <br />(500 000) <br />20 Savings to Investment Ratio <br />(600,000) <br />Discounted Payback Period (years <br />Internal Rate of Return <br />(700,000) Year <br />• Remaining useful life of boiler and chiller is on the order of six to ten years. <br />LEXINGTON COMMUNITY CENTER — March 5, 2014 Steffian Bradley Architects United States - United Kingdom • Canada • China <br />