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27 Olander Air leakage REM ReportAIR LEAKAGE REPORT Date: July 21, 2011 Rating No.: 7352 Building Name: 27 Olander Rating Org.: CET Owner's Name: Wright Builders Phone No.: Property: 27 Olander Dr Rater's Name: Josy Raycroft Address: Northampton, MA 01060 Rater's No.: Builder's Name: Wright builders, inc. Weather Site: Northampton, MA Rating Type: Confirmed Rating File Name: 7352_ 27 Olander craftsman cottage FINAL -.blg Rating Date: 7/20/11 REM/Rate - Residential Energy Analysis and Rating Software v12.93 This information does not constitute any warranty of energy cost or savings. © 1985-2011 Architectural Energy Corporation, Boulder, Colorado. Whole House Infiltration Blower door test Heating Cooling Natural ACH:0.14 0.10 ACH @ 50 Pascals:2.26 2.26 CFM @ 25 Pascals:572 572 CFM @ 50 Pascals:898 898 Eff. Leakage Area: [sq.in]49.3 49.3 Specific Leakage Area:0.00012 0.00012 ELA/100 sf shell: [sq.in]1.00 1.00 Total Duct Leakage to Outside (All ducts combined) CFM @ 25 Pascals:26 CFM25 / CFMfan:0.0211 CFM25 / CFA:0.0090 CFM per Std 152:N/A CFM per Std 152 / CFA:N/A CFM @ 50 Pascals:41 Eff. Leakage Area: [sq.in]2.24 Thermal Efficiency:N/A Ventilation Mechanical:Balanced Sensible Recovery Eff. (%):59.0 Total Recovery Eff. (%):73.0 Rate (cfm):65 Hours/Day:24.0 Fan Watts:72.0 Cooling Ventilation:Natural Ventilation ASHRAE 62.2 - 2010 Ventilation Requirements For this home to comply with ASHRAE Standard 62.2 - 2010 Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings, a minimum of 59 cfm of mechanical ventilation must be provided continuously, 24 hours per day. Alternatively, an intermittently operating mechanical ventilation system may be used if the ventilation rate is adjusted accordingly. For example, a 118 cfm mechanical ventilation system would need to operate 12 hours per day, as long as the system operates to provide required average ventilation once each hour.