Standards Compliance
HVAKR implements industry-standard methods for its load and ventilation calculations.
Implemented Standards
Section titled “Implemented Standards”ASHRAE Standard 62.1
Section titled “ASHRAE Standard 62.1”Ventilation for Acceptable Indoor Air Quality:
- Ventilation Rate Procedure
- Zone and system calculations
- Exhaust requirements
ANSI/ASHRAE/ACCA Standard 183
Section titled “ANSI/ASHRAE/ACCA Standard 183”Peak Cooling and Heating Load Calculations:
- Radiant Time Series method
- Design day analysis
- Load component calculations
Other References
Section titled “Other References”ASHRAE Fundamentals
Section titled “ASHRAE Fundamentals”Reference data from the ASHRAE Handbook of Fundamentals:
- Weather data
- Material properties
- Calculation methods
ASHRAE Equipment
Section titled “ASHRAE Equipment”Equipment performance from ASHRAE Handbook - HVAC Systems and Equipment:
- Coil performance
- Fan characteristics
- Terminal unit data
Compliance Verification
Section titled “Compliance Verification”Project Check
Section titled “Project Check”HVAKR does not grade a design for code compliance. The project Check — ask AI Chat to “Check this project,” or run a check job through the API — reports structural and calculation problems, such as spaces without a space type or no zones defined, plus design-quality flags such as equipment oversizing. See Design Validation.
The one code-vs-design comparison is per space: type an outdoor airflow lower than the calculated requirement and the space warns that the custom value is below the code-required value.
Reports
Section titled “Reports”Document compliance in reports:
- Load calculation basis
- Design assumptions
Version Information
Section titled “Version Information”Standard Editions
Section titled “Standard Editions”HVAKR implements these editions:
- ASHRAE 62.1 / 170 — both the 2022 and 2025 editions are supported. New projects default to the 2025 edition; you can switch editions per project: open Settings from the left sidebar footer and set Ventilation Standard under Ventilation. The 2025 edition adds an air-density correction factor to required ventilation airflows, which only matters at elevations above roughly 515 ft.
- ANSI/ASHRAE/ACCA Standard 183-2007
Updates
Section titled “Updates”As standards are updated:
- HVAKR is updated accordingly
- Existing projects may need review
Local Codes
Section titled “Local Codes”Beyond ASHRAE
Section titled “Beyond ASHRAE”Local codes may require:
- Higher ventilation rates
- Additional safety factors
- Specific equipment requirements
Customization
Section titled “Customization”Adjust for local requirements:
- Override ventilation rates
- Document modifications
Best Practices
Section titled “Best Practices”- Know your codes - Verify local requirements
- Document assumptions - Note any deviations
- Stay current - Check for standard updates
- Verify compliance - Review calculation results