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          Orders: 800-648-9523
          Tech Support: 979-690-9420



          Video Demos

          Residential HVAC Introduction
          (1 minute)

          Residential HVAC Demo Including Bill of Materials
          (10 minutes)

          Rhvac is powered by
          ACCA Manual J

          Rhvac and Manual D Ductsize are
          powered byACCA Manual D


          Welcome to Elite Software
          Engineering Design Software for Engineers, Architectsand Contractors

          Elite Software is the world's premier software developer for HVAC, electrical, plumbing, and fire protection design software. Over 30 programs are offered for such applications as HVAC load calculations, building energy analysis, HVAC duct and pipe sizing, plumbing & lighting design, fault current calculations, voltage drops, fuse and breaker coordination, and much more. Our HVAC software sets the standard for excellence and ease-of-use in the industry.

          Favorites from Each Category


          Rhvac - Calculate Manual J heating and cooling loads for residential buildings, both block load and room-by-room.

          Chvac - Calculate ASHRAE based heating and cooling loads for commercial buildings.

          HVAC Tools - Perform 13 common HVAC design tasks.


          Electrical Tools - Perform common electrical calculation and data look-up tasks.


          Light - Design indoor lighting with zonal cavity calculations.

          Fire Protection

          Fire - Design and analyze fire sprinkler systems.


          S-Pipe - Design and analyze domestic supply water piping systems.

          Upcoming Events

          » Check out our exhibit at the 2020 AHR Expo conference in Orlando, Feb. 3-5, 2020.

          Latest News

          » Drawing Board for Rhvac Version 2 is officially released and available for downloading. [1/13/2020]

          » Rhvac video shows automatic room creation when you switch a project to Drawing Board mode.[6/18/2019]

          » Rhvac can now import a REM/Rate or Ekotrope XML file.[5/28/2019]

          » Rhvac and Rhvac Online now have lower discounted prices when you already have the other of the two programs.[12/20/2018]

          » Rhvac Online video demo for using help is available for watching.[10/18/2018]

          » Rhvac Online video demos for duct design are available for watching.[9/17/2018]

          » Rhvac Online video demo for load calculation is available for watching.[8/24/2018]

          » Elite Software is now a Preferred Partner with the Service Roundtable contractor organization.[6/7/2018]

          » Manual J Calculator Online is now available.[12/19/2017]

          » Manual D Ductsize Online is now available.[9/20/2017]

          » Manual S Calculator Online is now available.[9/8/2017]

          » Rhvac Onlineis officially released, and subscriptions are now available.[7/10/2017]

          Go here to register (It's FREE to use at the demo level): www.elitesoftapps.com

          » More...

          Copyright © 2021 Elite Software Development, Inc., webmaster@elitesoft.com
          2700 Arrington Road, College Station, TX 77845-4491