New capabilities
Enhanced Ventilation Design
h2x now performs more accurate coil and airflow calculations incorporating psychrometric processes including humidification and dehumidification. Designing accurate coils, airflows and ducts with ventilation systems have never been easier with h2x.
New capabilities available in your account:
  • Psychrometric calculations for cooling and heating coils (supply, return, outside air and mixed-air states)
  • Automatic zone air requirement calculations (cooling and heating peaks)
  • Equipment coil load sizing across the full annual simulation
  • AHU supply, outside air, return and exhaust airflow calculations
  • Results displayed directly on equipment and zones in the canvas
Note that these are only available on the Heat Balance Method (Early Access). Go to
Project Settings > Methods > Heat Gain Calculation Method > Heat Balance Method Energy Plus (Early Access)
to use these capabilities.
Go to Project Settings > Methods > Mechanical > AHU Sizing Method > Psychrometric (Early Access) to turn on these capabilities. Once enabled, connect Zones to Ventilation Equipment (e.g. an AHU) and run calculations to see accurate coil loads, airflows and psychrometric results.
ANSI/ASHRAE/ACCA Standard 183 compliance for peak heating and cooling load calculations
For customers in the US, h2x now complies with the ANSI/ASHRAE/ACCA Standard 183, a key compliance baseline for heating and cooling load calculations in the US.
Heat loads and Ventilation System Design capabilities in the Heat Balance Method (Early Access) are fully compliant. Go to
Project Settings > Methods > Heat Gain Calculation Method > Heat Balance Method Energy Plus (Early Access)
to access these capabilities.
General improvements & Bug fixes
  • General improvements
  • Minor bug fixes