In February of 2011 Cornerstone Services was founded on the premise of meeting customers maintenance needs without the struggle of transferring units to repair facilities. Since that time we have developed many programs to meet our customers needs, including preventive maintenance programs, our downloadable app for service requests from your smart phone, automated updates to keep you real time informed of progress, and online access to all your maintenance records, just to name a few. On behalf of the entire Cornerstone family, I would like to thank you for making our first 9 years a success. We look forward to spending many more years of serving your needs.