Chvac versions

Calculates peak heating and cooling loads
8.2
Oct 21, 2020
Review
8.1
Mar 12, 2012
Review
8.0
Feb 12, 2012
Review
7.1
Apr 7, 2008
Review
6.4
Apr 19, 2008
6.3
Dec 14, 2008

What's new

v8.2 [Feb 15, 2013]
1. Added Electric Resistance to the dropdown help selections in the heating Model Type input on the Equipment tab of the Air Handler Data window.
2. Added the ability to choose to export to EnergyPro 6 instead of EnergyPro 5.

v8.1 [Mar 12, 2012]
Fixed a bug on the Typical Equipment Cooling Loads window when selecting gas or electric hooded cooking appliances, where the radiation factor shown was being used instead of being ignored and instead using 100%. Since hooded appliances have only radiant sensible gains and no convective, then the practical value to copy back to the Equipment Cooling Loads window's Percent Radiant column is 100%. Also fixed a bug on the Typical Equipment Cooling Loads window for the same gas or electric hooded cooking appliances, where the Sensible Nominal column was not being converted to watts if you selected "watts" in the Quantity Type - Sensible input at the top of the window.
Fixed a bug that could occur with some regional and language option settings, where some of the numbers on some of the reports could not show up at all sometimes.
Adjusted the formatting on part of the Psychrometric Report to prevent a rare problem where some numbers were not showing up on some computers.

v8.0 [Feb 12, 2012]
Fixed a bug where an error 10 would be reported in some projects upon trying to perform calculations for a second time after having generated reports once, if the Zone Detailed Loads report had been one of the selected reports. Other errors would also be reported upon doing various things in the program after the error 10 occurred.

Alternative downloads

OVplan
OVplan
Free
rating

Calculation program for pipe net and surface heating.

HVAC Solution - Taco Hydronic System Solutions
HVAC Solution
Free
rating

Design HVAC systems and perform design calculations and changes.

HVAC Solution - Pro
HVAC Solution - Pro
rating

Draw schematic diagrams and prepare database of HVAC system.

Analysis Bio
Analysis Bio
Free
rating

Analysis Bio helps us design energy efficient buildings in Brazil/Argentina.

H-Tools
H-Tools
rating

H-Tools program allows the quick calculation of 13 common HVAC design tasks.