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28 -014 249 Sylvester Rd, Northampton - AirLeakageAir Leakage Property Scott Hathaway 249 Sylvester Rd Northampton, MA 01060 Weather:Northampton, MA P15461 249 Sylvester Rd Florence - final.blg Organization Center for EcoTechnology 413-586-7350 Matt Zarotny Builder S. Hathaway Construction, LLC Whole House Infiltration ASHRAE 62.2 - Ventilation Requirements The ASHRAE 62.2 flow rates shown above are the CONTINUOUS mechanical fresh air ventilation which will meet the 'whole-building' requirement under that version of the standard. Both values incorporate any appropriate 'infiltration credit'. Intermittent mechanical ventilation may be used if the flow rate is adjusted accordingly. For example, the runtime can be reduced to 12 hours per day using a doubled flow rate, as long as the system provides ventilation at least once every 3 hours. For more detail, refer to the appropriate standard. REM/Rate - Residential Energy Analysis and Rating Software v14.6.4 This information does not constitute any warranty of energy cost or savings. © 1985-2016 Noresco, Boulder, Colorado. HERS Confirmed 3/13/17 Rating No:P15461 Rater ID:2933592 Duct Leakage Ventilation Blower Door Test Heating Cooling Natural ACH 0.13 0.10 ACH @ 50 Pascals 1.96 1.96 CFM @ 25 Pascals 659 659 CFM @ 50 Pascals 1034 1034 Eff. Leakage Area (sq.in) 56.8 56.8 Specific Leakage Area 0.00016 0.00016 ELA/100 sf shell (sq.in) 0.84 0.84 Leakage to Outside Units CFM @ 25 Pascals 43 CFM25 / CFMfan 0.0261 CFM25 / CFA 0.0171 CFM per Std 152 N/A CFM per Std 152 / CFA N/A CFM @ 50 Pascals 67 Eff. Leakage Area (sq.in) 3.70 Thermal Efficiency N/A Total Duct Leakage Units CFM25/CFA Total Duct Leakage 0.0000 Mechanical Exhaust Only ASHRAE Sensible Recovery Eff. (%) 0.0 62.2-2010 Total Recovery Eff. (%) 0.0 Rate (cfm) 66 63 Hours/Day 24.0 24.0 Fan Watts 5.5 Cooling Ventilation Natural Ventilation