This philosophy is based on the belief that air conditioning comfort is very important for our customers, their business, and their employees’ well-being. To meet that need is to build trust through good communication with our customers, to make them aware of their air conditioning system performance, and provide superior workmanship.

Our Management team has many years of providing courteous customer service. We strive to provide our customers with clear understandable information so that they can make a sound and comfortable decision on their air conditioning system investment.

Our well-equipped and knowledgeable Technicians will provide efficient team supported care to minimize down time, eliminate call backs, and reduce labor cost. All technicians utilize smart phone technology to serve you better.

We are a licensed air conditioning contractor in the State of Hawaii, a small business, a graduate of certified Federal 8(a) Small Disadvantage Business program. Cornerstone installs, repairs and provides preventive maintenance service for commercial, State and Federal facilities.