Colorado HVAC Load Calculation Guide

Free HVAC load calculation guide for Colorado. Review climate zones, design temperatures, building code context, and local calculator resources for Denver, Colorado Springs, Auroraand 1 more cities.

Start with the Free Colorado Load Calculator

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

Colorado Design Temperatures

Winter Design Temperature

-15°F

Used for heating load calculations and equipment sizing across Colorado

Summer Design Temperature

91°F

Used for cooling load calculations and equipment sizing across Colorado

Climate Zone Information

Colorado spans climate zones Zone 4B, Zone 5B, Zone 6B, Zone 7, which means different regions may have varying design requirements. Always verify local design temperatures for your specific project location.

Colorado Building Codes & Requirements

HVAC Requirements

  • High-efficiency heating required
  • Altitude adjustments for equipment
  • Air sealing emphasis

Note: Equipment derating required for high altitude installations

Energy Code

2015 IECC with amendments

Common Building Types

  • Mountain homes
  • High-altitude construction
  • Ski lodges

Colorado HVAC Challenges

High altitude effects

Extreme temperature swings

UV exposure

Dry climate

Quick Facts

State:Colorado
Abbreviation:CO
Climate Zones:Zone 4B, Zone 5B, Zone 6B, Zone 7
Major Cities:4

Local Resources

Xcel Energy

utility

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Colorado Energy Office

government

RMSPHCC Colorado

organization