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79 Olander Air leakage REM ReportAIR LEAKAGE REPORT Date: June 01, 2011 Rating No.: 7350 Building Name: 79 Olander Rating Org.: CET Owner's Name:Phone No.: 413 586 7350 Property: 79 Olander Drive Rater's Name: Josy Taylor Raycroft Address: Northampton, MA 01060 Rater's No.: Builder's Name: Wright Builders Weather Site: Northampton, MA Rating Type: Confirmed Rating File Name: 7350 79 Olander VillageHill victorian reverse FINAL .blgRating Date: 5/31/11 REM/Rate - Residential Energy Analysis and Rating Software v12.91 This information does not constitute any warranty of energy cost or savings. © 1985-2010 Architectural Energy Corporation, Boulder, Colorado. Whole House Infiltration Blower door test Heating Cooling Natural ACH:0.20 0.15 ACH @ 50 Pascals:3.02 3.02 CFM @ 25 Pascals:1015 1015 CFM @ 50 Pascals:1592 1592 Eff. Leakage Area:87.4 87.4 Specific Leakage Area:0.00022 0.00022 ELA/100 sf shell:1.03 1.03 Total Duct Leakage to Outside CFM @ 25 Pascals:55 CFM25 / CFMfan:0.0438 CFM25 / CFA:0.0198 CFM per Std 152:35 CFM per Std 152 / CFA:0.0126 CFM @ 50 Pascals:86 Eff. Leakage Area:4.74 Thermal Efficiency:N/A Ventilation Mechanical:Exhaust Only Sensible Recovery Eff. (%):0.0 Total Recovery Eff. (%):0.0 Rate (cfm):86 Hours/Day:24.0 Fan Watts:72.0 Cooling Ventilation:Natural Ventilation ASHRAE 62.2 - 2007 Ventilation Requirements For this home to comply with ASHRAE Standard 62.2 - 2007 Ventilation and Acceptable Indoor Air Quality in Low-Rise Residential Buildings, a minimum of 73 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 145 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.