Texas HVAC Load Calculation Guide
Free HVAC load calculation guide for Texas. Review climate zones, design temperatures, building code context, and local calculator resources for Houston, San Antonio, Dallasand 3 more cities.
By HVAC Load Calculate Team — Licensed HVAC professionals
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Start with the Free Texas Load Calculator
Use our residential or commercial calculator to estimate loads with Texas-relevant climate conditions in mind.
Texas Design Temperatures
Winter Design Temperature
Used for heating load calculations and equipment sizing across Texas
Summer Design Temperature
Used for cooling load calculations and equipment sizing across Texas
Texas Building Codes & Requirements
HVAC Requirements
- • High SEER minimums
- • Duct testing mandatory
- • Enhanced humidity control
Note: Houston area requires special humidity control; West Texas has different dry climate considerations
Energy Code
2015 IECC with Texas amendments
Common Building Types
- • Ranch-style homes
- • High-rise buildings
- • Industrial facilities
Texas HVAC Challenges
Extreme heat
High humidity (east)
Drought conditions
Severe weather
Local Resources
Texas Department of Licensing
government