Texas HVAC Load Calculation
Professional HVAC load calculation requirements for Texas. Get accurate heating and cooling load calculations with state-specific design temperatures, building codes, and local climate considerations for Houston, San Antonio, Dallas and 3 more cities.
Quick Start Texas Load Calculator
Get started with your Texas HVAC load calculation using our professional tools designed for local climate conditions.
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
Climate Zone Information
Texas spans climate zones 2A and 2B and 3A and 3B, which means different regions may have varying design requirements. Always verify local design temperatures for your specific project location.
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
Quick Facts
Local Resources
Texas Department of Licensing
government