Oklahoma HVAC Load Calculation Guide

Free HVAC load calculation guide for Oklahoma. Review climate zones, design temperatures, building code context, and local calculator resources for Oklahoma City, Tulsa, Normanand 1 more cities.

Start with the Free Oklahoma Load Calculator

Use our residential or commercial calculator to estimate loads with Oklahoma-relevant climate conditions in mind.

Oklahoma Design Temperatures

Winter Design Temperature

10°F

Used for heating load calculations and equipment sizing across Oklahoma

Summer Design Temperature

97°F

Used for cooling load calculations and equipment sizing across Oklahoma

Climate Zone Information

Oklahoma spans climate zones Zone 3A, Zone 4A, which means different regions may have varying design requirements. Always verify local design temperatures for your specific project location.

Oklahoma Building Codes & Requirements

HVAC Requirements

  • High-efficiency cooling
  • Wind-resistant installation
  • Standard ventilation

Note: Tornado and high wind resistance affects equipment installation

Energy Code

2015 IECC

Common Building Types

  • Ranch homes
  • Agricultural buildings
  • Oil field facilities

Oklahoma HVAC Challenges

Extreme heat

Tornado activity

High winds

Dust storms

Major Cities in Oklahoma

Norman
97°F max
Broken Arrow
96°F max

Quick Facts

State:Oklahoma
Abbreviation:OK
Climate Zones:Zone 3A, Zone 4A
Major Cities:4

Local Resources

Oklahoma Gas & Electric

utility

Visit Website →

Oklahoma Department of Commerce

government

Oklahoma HVAC Association

organization