# Cool Calc

Prepare residential load, equipment and duct designs in a browser.

Cool Calc offers web-based Manual J, Manual S and Manual D software. Its page describes home load calculations, equipment selection and duct design. It allows project setup before payment and charges for results. Homeowners can use it to prepare inputs, then ask a qualified designer to review the assumptions.

Price: Project setup can be explored before purchase; results require payment. Site: https://www.coolcalc.com/.

Also on the [web page](https://heatpumppros.fyi/apps/cool-calc).