cORNERSTONE SOLD ME THE UNIT LAST YEAR AND THIS WAS THEIR YEARLY CHECK UP, SO FAR SERVICE INSTALLATION AND MAINTENANCE HAS BEEN GREAT. tHE TECHS. ARE VERY PLEASANT, WELL MANNERED AND RESPECT YOUR HOME WITH BOOTIES WHICH I SINCERELY APPRECIATED. MATT F. WAS THE MAINTENANCE TECH THAT CAME TODAY AND HE WAS EXCELLENT,VERY EFFICIENT AND KNOWLEDGEABLE. THE OFFICE PERSONNEL ARE ALWAYS GREAT AND HELPFUL. THE EMPLOYEES CALL AHEAD WHEN THEIR COMING AND HAVE ALWAYS BEEN ON TIME IF NOT EARLY. GREAT JOB, A WELL OILED COMPANY THAT WILL BE AROUND FOR A LONG TIME TREATING CUSTOMERS THE WAY THEY DO.
more