Energy Code Compliance
Energy code compliance involves meeting minimum standards for insulation, air sealing, window performance, and HVAC efficiency as mandated by the International Energy Conservation Code (IECC).
Energy code compliance ensures homes meet minimum efficiency standards for insulation, air sealing, windows, and mechanical systems. Denver follows the International Energy Conservation Code (IECC) with amendments. Requirements include: R-49 to R-60 attic insulation, R-21 wall insulation, R-30 floor insulation, U-0.30 or better windows, and 90%+ efficient furnaces. New construction and additions must demonstrate compliance through calculations or prescriptive path documentation. Some jurisdictions require blower door testing proving air tightness.
Why It Matters
Energy codes reduce utility costs and environmental impact. Proper insulation and air sealing can reduce heating and cooling costs by 30-50% compared to older homes. Denver's 6,000+ heating degree days mean winter heating dominates energy costs—improved building envelope directly impacts comfort and bills. Compliance isn't optional: building inspectors verify insulation installation, check window labels, and review HVAC equipment efficiency ratings. Plan energy compliance details during design to avoid expensive changes during construction.
Key Energy Code Requirements
- Attic insulation: R-49 to R-60 depending on insulation type
- Wall insulation: R-20 to R-21 cavity plus continuous insulation options
- Floor insulation: R-30 over unconditioned spaces
- Windows: U-factor 0.30 or lower, visible light transmission standards
- Air sealing: Comprehensive sealing with optional blower door verification
- HVAC equipment: 95%+ AFUE furnaces, SEER 14+ air conditioners
Related Terms
R-Value
R-Value measures the thermal resistance of insulation materials, with higher values indicating better insulating properties and greater energy efficiency.
Blower Door Test
A blower door test uses a calibrated fan and pressure gauges to measure air infiltration rates and locate air leakage points in building envelopes.
Rigid Foam Insulation
Rigid foam insulation consists of stiff panels of polystyrene, polyisocyanurate, or polyurethane foam that provide superior insulating value and moisture resistance for walls, roofs, and foundations.