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71 Olander Air leakage reportAIR LEAKAGE REPORT Date: March 08, 2011 Rating No.: 7349 Building Name: 71 Olander - Rating Org.: CET Owner's Name: Wright Builders Phone No.: Property: 71 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: 7349 71 Olander FINALw out pv -.blg Rating Date: 3/3/11 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:0.08 0.06 ACH @ 50 Pascals:1.40 1.40 CFM @ 25 Pascals:374 374 CFM @ 50 Pascals:587 587 Eff. Leakage Area:32.2 32.2 Specific Leakage Area:0.00007 0.00007 ELA/100 sf shell:0.39 0.39 Total Duct Leakage to Outside CFM @ 25 Pascals:59 CFM25 / CFMfan:0.0272 CFM25 / CFA:0.0185 CFM per Std 152:38 CFM per Std 152 / CFA:0.0118 CFM @ 50 Pascals:93 Eff. Leakage Area:5.08 Thermal Efficiency:N/A Ventilation Mechanical:Balanced Sensible Recovery Eff. (%):70.0 Total Recovery Eff. (%):69.0 Rate (cfm):63 Hours/Day:24.0 Fan Watts:45.0 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 62 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 124 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.