Chvac 8.3.8
Chvac quickly and accurately calculates the maximum heating and cooling loads for commercial buildings. The cooling loads can be calculated with either the CLTD method or the new RTS (Radiant Time Series) method. The program allows an unlimited number of rooms which can be grouped into as many as 100 air handling systems. Chvac automatically looks up all cooling load and correction factors necessary for computing loads.

Features
Calculates Peak Heating & Cooling Loads
Determines Building Tonnage and Room CFM Requirements, and Runout Duct Sizes
Uses either the RTS or CLTD calculation method
Chvac complies with the ANSI/ASHRAE/ACCA Standard 183—2007
Computes CFM Air Quantities With Psychrometrics
Calculates from Manually Entered Data or Directly from Floor Plans Created with Drawing Board (sold separately)
Imports and exports gbXML files
New! Allows Different Indoor Conditions for each Room
Links with Energy Audit Program
Links with PsyChart program. The PsyChart program can import Chvac system data directly into its Air Handler Model window.
Links with HVAC Solution program.
Transfers data to the EnergyPro and eQUEST programs (more on using eQUEST with Chvac)
Allows 30 Walls, 30 Windows, and 12 Roofs per Room
Automates Compliance with ASHRAE Standard 62
Calculates in both Metric and English Units
Converts any project from English to Metric units and vice-versa
Allows Simultaneous Infiltration and Ventilation
Calculates Runout and Main Trunk Duct Sizes
Selects Equipment from ARI/GAMA Databases
Allows Virtually Unlimited Number of Rooms
Rooms May be Optionally Grouped Under VAV Boxes
Prints Numerous Color Pie Charts and Bar Graphs
Creates Spreadsheet Output File