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41 Mark Warner air leakageREM ReportAIR LEAKAGE REPORT Date: June 13, 2011 Rating No.: cet 11-082 Building Name: Bear Hill #41 Rating Org.: CET Owner's Name:Phone No.: 413-586-7350 Property: 41 Mark Warner Dr Rater's Name: Josy Raycroft Address: Florence, MA 01062 Rater's No.: Builder's Name: Ziter Saloomy Construction Weather Site: Northampton, MA Rating Type: Confirmed Rating File Name: cet 11-082 41 Mark Warner Dr FINAL.blg Rating Date: 6/9/11 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:0.25 0.18 ACH @ 50 Pascals:3.52 3.52 CFM @ 25 Pascals:950 950 CFM @ 50 Pascals:1490 1490 Eff. Leakage Area:81.8 81.8 Specific Leakage Area:0.00017 0.00017 ELA/100 sf shell:1.09 1.09 Total Duct Leakage to Outside CFM @ 25 Pascals:136 CFM25 / CFMfan:0.0826 CFM25 / CFA:0.0417 CFM per Std 152:87 CFM per Std 152 / CFA:0.0266 CFM @ 50 Pascals:213 Eff. Leakage Area:11.72 Thermal Efficiency:N/A Ventilation Mechanical:Exhaust Only Sensible Recovery Eff. (%):0.0 Total Recovery Eff. (%):0.0 Rate (cfm):63 Hours/Day:24.0 Fan Watts:70.5 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 63 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 125 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.