Heat Reflective/Cool Wall Sytems

Cool wall systems is a type of paint that is applied to a building’s exterior wall and are highly solar reflective. These solar reflective properties allow it to reduce wall surface temperatures thus reducing the amount of heat that’s transferred into the home. This reduction in heat transfer can reduce a homes cooling needs.

To check if there are any incentives or rebates available for this product in your area, please visit the Database of State Incentives for Renewables and Efficiency (DSIRE).




  1. Product must have a solar reflectance rating greater than 0.5 as tested by a recognized third-party laboratory using the ASTM C1549-09 standard test method.
  1. Product manufacturer, brand, and model must be a pre-approved HERO Cool Wall Coating.
  2. Product primary application surface must be exterior wall surfaces of conditioned (heating and/or cooled) buildings. Trim, soffit, and/or fascia may also be included as secondary work scope items, as applicable.
  3. Product is only eligible for properties located within California Energy Commission Building Climate Zones 4 through 10 and 12 through 15.
  4. Product is not eligible for properties located within CEC Building Climate Zones 1 through 3, 11, and 16.