Washington HVAC Load Calculation Guide
Free HVAC load calculation guide for Washington. Review climate zones, design temperatures, building code context, and local calculator resources for Seattle, Spokane, Tacomaand 3 more cities.
By HVAC Load Calculate Team — Licensed HVAC professionals
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Washington Design Temperatures
Winter Design Temperature
Used for heating load calculations and equipment sizing across Washington
Summer Design Temperature
Used for cooling load calculations and equipment sizing across Washington
Washington Building Codes & Requirements
HVAC Requirements
- • Very high efficiency standards
- • Duct testing mandatory
- • Advanced ventilation
Note: One of the most stringent energy codes in the nation
Energy Code
2018 Washington State Energy Code
Common Building Types
- • Traditional homes
- • Green buildings
- • High-tech facilities
Washington HVAC Challenges
Marine climate
Seismic requirements
Green building standards
Energy codes
Major Cities in Washington
Local Resources
Washington State Department of Commerce
government
Washington HVAC Association
organization