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15B-049 HERS-146 259 Chesterfield Rd air leakageAir Leakage Property Daniel Melnik 259 Chesterfield Rd Northampton, MA 01053 Weather:Northampton, MA Melnik Residence HERS-146 259 Chesterfield Rd registered.blg Organization Power House Energy Consulting 413-835-5162 Brandon Shantie Builder Ed Jazab Carpentry Whole House Infiltration 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 66 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 133 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. REM/Rate - Residential Energy Analysis and Rating Software v14.5.1 This information does not constitute any warranty of energy cost or savings. © 1985-2014 Architectural Energy Corporation, Boulder, Colorado. HERS Confirmed 2/6/15 Rating No:HERS-146 Rater ID:4986384 Duct Leakage Ventilation Blower Door Test Heating Cooling Natural ACH 0.07 0.05 Leakage to Outside Units ducts Mechanical Exhaust Only ACH @ 50 Pascals 0.99 0.99 CFM @ 25 Pascals 0 Sensible Recovery Eff. (%)0.0 CFM @ 25 Pascals 362 362 CFM25 / CFMfan 0.0000 Total Recovery Eff. (%)0.0 CFM @ 50 Pascals 568 568 CFM25 / CFA 0.0000 Rate (cfm)72 Eff. Leakage Area (sq.in)31.2 31.2 CFM per Std 152 N/A Hours/Day 24.0 Specific Leakage Area 0.00008 0.00008 CFM per Std 152 / CFA N/A Fan Watts 11.2 ELA/100 sf shell (sq.in)0.35 0.35 CFM @ 50 Pascals 0 Cooling Ventilation Natural Ventilation Eff. Leakage Area (sq.in)0.00 Thermal Efficiency N/A Total Duct Leakage Units CFM25/CFA Total Duct Leakage 0.1567