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


Elite Web Google

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 by ACCA Manual D

National Comfort Institute recommends Elite Software for High Performance Contractors


Welcome to Elite Software
Engineering Design Software for Engineers, Architects and 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.
  Latest News

»New Rhvac Video available on converting AHRI data files into Elite equipment database files. [3/11/2024]

»New Rhvac Video about editing equipment databases is now available. [5/8/2023]

»Rhvac Version 10 has been released. [3/6/2023]

»Fire Version 7 has been released. [1/1/2023]

»National Comfort Institute publishes a great magazine called High-Performance HVAC Today. In the December 2022 issue there is an article entitled, "The Benefits of Doing Computerized HVAC Load Calculations." Click here to read it. [12/29/2022]

»New Update Manager is available for downloading. [4/8/2022]

»New Videos for creating custom materials in Rhvac and Rhvac Online [3/24/2022]

»New Video for converting an Rhvac Room Data window project to Drawing Board. [9/22/2021]

»Rhvac Online upload and download video is now available for viewing. [8/30/2021]

»Fire Pump video is now available for viewing. [6/18/2021]

»Fire Standpipe video is now available for viewing. [5/25/2021]

» Fire Basics video is now available for viewing. [1/5/2021]

» Chvac Basics video series is now available for viewing. [5/27/2020]

» More...

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