Elite Software Chvac 8.02 With Drawing Board 6.01 Chvac has been an industry leader in commercial load calculation software since 1979. Try Elite Software's flagship program today and see why so many professional engineers are choosing Chvac. Get both Chvac and EnergyPro (which Chvac links to) and you'll have the most powerful, user-friendly commercial load calculation/energy analysis combo on the market. 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 Overview 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. In addition, it can look up outdoor design weather data for over 2000 cities located around the world. There is also provision for editing the weather data as well as adding data for other cities. Comprehensive reports list the general project data, detailed room loads, air handler summary loads, outside air loads, total building loads, building envelope analysis, tonnage requirements, CFM air quantities, chilled water flow rates (if applicable), and complete psychrometric data with entering and leaving coil conditions. Other outstanding features include ASHRAE Standard 62 analysis, automatic building rotation, 360 degree wall orientations, tilted glass, exterior shading, internal operating load profiles, variable indoor design temperatures, people diversity, pretreated outside air, seasonal infiltration and ventilation rates, reheat loads, duct gains and losses, and return air plenums.