Cool Air Products
Cool Air Products Introduces Sigma Cap

Cool Air Products Introduces Sigma Cap

May 12, 2025
Discover the Sigma Cap by Cool Air Products, a patented solution for HVAC professionals to efficiently replace a wide range of capacitor sizes. Its innovative design allows for easy customization and stacking to meet specific MFD values.
Cool Air Products introduces the patented Sigma Cap designed for HVAC pros to quickly and efficiently replace a wide variety of capacitor sizes from singles and duals.
Simple to use, the Sigma Cap can be used as a standalone unit or stacked to get the MFD value needed. Individual pods are available to adjust stock for common builds. Users can rotate and stack the pods to add capacitance on the correct side to build the dual capacitor when needed.
A Sigma Cap starter kit that includes seven different sizes is available, 11 capacitors total, and when paired with alternate sizes, will replace hundreds of both single and dual 370/440V capacitors, allowing HVAC pros to always have the right size capacitor to finish the job without needing an additional trip to the supply house.
 
The Sigma Cap is the first field-assembled, dual-run capacitor. Made in the U.S., all units are dual-rated for 370/440 VAC.
For more information on the Sigma Cap, visit: www.coolairproducts.net/products/sigmacap.