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RECOMMENDATIONS - MECHANICAL <br /> <br />Domestic Water Heater Replacement - Recommended $28,000 <br />x Replace existing water heater with new direct vent high efficiency (96%) water heater. Provide <br />new flue & intake piping. Reconnect to existing gas and domestic water piping. <br /> <br />Boiler Replacement - Recommended $86,000 <br />x Replace existing boilers with new direct vent high efficiency (94%) boilers. Provide new flue & <br />intake piping. Modify existing heating water piping. Provide new main heating water pumps. <br />Reconnect to existing gas and domestic water piping. <br /> <br />Unit Heater Replacement $4,500 <br />x Replace existing hot water unit heater in mechanical room. Connect to existing hot water <br />piping. <br /> <br />Cooling System Replacement – Option 1 (DX/Coil Replacement) - Recommended $190,000 <br />x Replace existing air-cooled condensing units in their current locations with new. Provide new <br />cooling coils & refrigeration piping. Existing air handling units to remain. AHU cooling coil <br />section to be modified to accommodate new coil. Existing refrigerant piping to be demoed. <br /> <br />Cooling System Replacement – Option 2 (DX/AHU Replacement) $335,000 <br />x Replace existing air-cooled condensing units and existing air handling unit in their current <br />locations with new. Provide new refrigeration piping. Existing refrigerant piping to be demoed. <br />AHUs to be connected to existing ductwork and heating water piping. <br /> <br />Cooling System Replacement – Option 3 (Chiller/Coil Replacement) $235,000 <br />x Replace existing air-cooled condensing units with new air-cooled chiller. Provide new chilled <br />water piping, pumps & specialties. Provide new chilled water coil. AHU cooling coil section to <br />be modified to accommodate new coil. Existing refrigerant piping to be demoed. <br /> <br />Cooling System Replacement – Option 4 (Chiller/AHU Replacement) $381,000 <br />x Replace existing air-cooled condensing units with new air-cooled chiller. Provide new chilled <br />water piping, pumps & specialties. Replace existing air handling unit with new. Existing <br />refrigerant piping to be demoed. AHUs to be connected to existing ductwork and heating water <br />piping. <br /> <br />Duct Liner Replacement – (AHU-3) $5,500 <br />x Replace damaged liner in AHU-3 return ductwork. <br /> <br /> <br />Notes: <br />x Cooling System estimates (options 1-4) include electrical costs and $20k allowance for general <br />construction (additional chases, ceiling work, etc.) <br />x New control work for replaced equipment only. <br />x The efficiency gains with the chiller resulted in approx. $1,500 per year in electrical costs resulting in a 30- <br />year ROI between option 1 & 3. <br /> $WWDFKPHQW%