Supercool HVAC Slide Chart 3-Pack – R-22/R-410A Superheat & Duct Calculator

If you're an HVAC tech or a serious DIYer working on AC systems, these slide charts from hvaccharts.com are absolute lifesavers.

The pack comes with three different charts: one for R-22 superheat, one for R-410A superheat, and a duct calculator to help you size ductwork on the fly.

They're pocket-sized, so you can keep 'em right in your tool bag or shirt pocket for quick reference on the job.

No need to pull out your phone or dig through a manual—just slide and read.

Made in the USA, so you know they're accurate and durable.

The model is HVAC3, UPC 683405356547.

Whether you're charging a system or designing a duct layout, these little tools save time and prevent mistakes.

Grab a set and keep 'em handy.