Why QC Colorado Installing over 500 units annually, we are not only the experts in installation but also in providing correctly sized Quiet Cool systems and excellent customer service. Our customer reviews on Google, Facebook, Yelp, etc. speak for themselves. Our customers are not just “happy” but are truly impressed with our company, our installation process, and with the incredible cooling and comfort, our Quiet Cool systems provide. Saving up to 90% on AC costs and dramatically improving indoor air quality are simply icing on the cake.