Great app
Save you time and money and it’s acca compliant.
Great App
I really like the fact it very affordable and my building department accepted it base on the fact its acca compliant!!! And its affordabe

This app streamlines HVAC load calculations, enabling users to quickly generate Manual J, S, and D outputs. It allows for on-the-spot pricing and uses real-world data for accurate estimates, even while on-site.
1.2.2
August 24, 2026
Add company information from the home screen Track installed heating equipment and capacities Improved permit reports and multi-system documentation More reliable project saving and deletion Fixed report pages appearing blank on larger jobs
MoreHVAC load calcs and estimating tools full access
HVAC Manual Boss is a business application designed to help HVAC professionals perform load calculations (Manual J, S, D) and generate estimates quickly and accurately, even while on-site.
HVAC Manual Boss allows users to build Manual J load calculations quickly and accurately, and generate Manual D and S outputs without difficulty.
Yes, HVAC Manual Boss enables you to create good, better, best pricing on the spot, helping you present options to clients.
Yes, the app uses real-world data to help you stay consistent with your numbers and provides access to major equipment brands and configurations.
HVAC Manual Boss is supported on iPhone and iPod devices.
HVAC Manual Boss offers a subscription plan at $9.99 per month. The app is free to download, with the subscription providing full access to its features.
You can manage or cancel your subscription anytime by going to your device's Settings. The subscription automatically renews unless canceled at least 24 hours before the end of the trial period.
While the app is designed for professionals, its user-friendly interface and ability to generate accurate calculations quickly can be beneficial for those learning the trade.