HVAC Design Free trial, then $29/mo
CoolCalc
Cloud-based Manual J load calculation software with AI-assisted data entry and error checking.
Overview
CoolCalc is a modern, cloud-based HVAC load calculation tool that simplifies Manual J and Manual S processes. Its AI features help auto-fill typical values and catch errors, making it ideal for contractors and engineers. The free trial allows you to test the workflow without commitment.