Combining Comfort and Efficiency Together

COREfficiency is a knowledgeable, dedicated energy-efficiency contractor in the Central Coast region of California, serving all of San Luis Obispo county, including San Luis Obispo, Arroyo Grande, Pismo, Santa Maria, Buellton, Atascadero, and Paso Robles!


The ONLY Preferred Dealer & Installer of QuietCool Products

We are proud here at COREfficiency to be a part of the most innovative and energy-efficient whole-house fan on the market! We are the ONLY manufacturer’s preferred dealer & installer on the Central Coast!

We can even recommend, size, and price out a system for you, right over the phone! All of our prices are 100% inclusive of all fans, switches, parts, and installation! We make sure you know exactly what you’re paying for before we install it. Fill out the form below for your free consultation!

Energy-Efficiency is Our Top Priority

COREfficiency also provides many other energy-saving services to increase the comfort level in your home, while also lowering your energy costs! These services include:

  • LED Lighting Retrofits

  • Electrical Upgrades

  • Attic Fans

  • Ceramic Window Tint

Want more information about our services? Fill out the form below to have one of our associates contact you immediately.



Contact Form