Air Infiltration: House Specification
All GWS Homes must meet an airtightness specification of 0.35 natural air exchange per hour as measured using a computerized calibrated blower door.
Air Infiltration: Duct Specifications
All GWS Homes must meet stringent air duct tightness requirements. Air duct leakage must not exceed 10% of CFMs suplied by each unit.
Zone 1: Less than 2,000 Cooling Degree Days and greater than 7,000 Heating Degree Days
Zone 2: Less than 2,000 Cooling Degree Days and 5,500-7,000 Heating Degree Days
Zone 3: Less than 2,000 Cooling Degree Days and 4,000-5,499 Heating Degree Days
Zone 4: Less than 2,000 Cooling Degree Days and less than 4,000 Heating Degree Days
Zone 5: 2,000 Cooling Degree Days or more and less than 4,000 Heating Degree Days
"U. S. Climate Zone Map from Energy Information Administration's Commercial Building Energy Consumption and Expenditures 1992, Appendix F. Graphic enhancements by Guaranteed Watt Savers Systems, Inc.
GWS requires the use of air-tight recessed lights or an air-tight light box around the light to prevent air from penetrating the house fron the attic.
UL Listed Material
HVAC Design: Forced Air Distribution Only
GWS utilizes the latest software and technology, Manual J Version, to analyze and develop the proper HVAC system specifications. GWS uses research from national laboratories and manufacturers to improve building performance. Our engineering approach to residential energy efficiency is based on building science principles using building components to determine the optimum HVAC system requirements. We work with builders and contractors to determine the cost and performance feasibility of system upgrades such as fresh air ventilation, humidity control and air flow performance.
All analysis calculations performed per manual J
It is necessary for us to have detailed information about the house to perform this analysis. Please fill out and fax or email the Builder Profile to us.
HVAC Design: Load Calculations
Common problems of oversized HVAC units include:
HVAC Design: Manual J CriteriaMJ8 Comparison Study - Condensed Inputs PDF
© 2008 Guaranteed Watt Saver Systems, Inc. 6444 NW Expressway, Suite 836A, Okla. City, OK 73132. 888-488-0206 888-488-0212 fax email@example.com