Carmel Software

04/22/2026

We've updated our Residential Load Calc iPhone app for iOS 26:

03/27/2026

Our Manual J HVAC Residential Load Calcs HD app for the iPad now works with iOS 26.x

03/12/2026

ResLoad-J iPad app now works with iOS 26.x

02/26/2026

Check out our latest newsletter announcing new services and features for our Hands Down Software tools:

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02/06/2026

We continue to add the "Share" button to all of our apps including our load calculation apps for the iPad. This allows you to email, text, print, and store locally or in the cloud all PDF reports.

12/17/2025

Our latest newsletter:

https://conta.cc/4j2Rduq

12/01/2025

We are releasing updated versions of all of our iOS mobile apps that include the ubiquitous "Share" icon that allow users to share reports via email, text, iCloud, and by many other means.

This is the HVAC Duct Sizer app for the iPad.

11/26/2025

We are beginning to release updated versions of all of our iOS mobile apps that include the ubiquitous "Share" icon (see the red square below) that allows users to share reports via email, text, iCloud, and many other means.

11/14/2025

Cool use-case using our HDPsyChart V9 software: A user imported 9,000 temperature data points from a Hobo data logger to perform building commissioning diagnosis:

11/12/2025

https://conta.cc/4rbCiBQ

Email from Carmel Software Hands Down Software Releases HDPsyChart V9 Purchase HDPsyChart V9 Here This Spring, we announced the first upgrade to HDPsyChart in over a decade: HDPsyChart V9. This upgrad