$89 DIAG+ REPAIRS . (1) ANOTHER VENDOR PUT IN NEST TSTAT (WHICH THEY WOULD LIKE REMOVED AS IT IS TOO TECHNICIAL FOR THE ELDERLY COUPLE). HOPEFULLY, THEY HAVE THEIR OLD ONE IF NOT TECH TRUCK MIGHT HAVE AN EASIER TSTAT TO OPERATE.... OR JUST EDUCATION ON THE NEST.???? (2) NOT GETTING HEAT. BEEN HAVING INTERMITTENT ISSUES WITH BOTH AC AND HEAT SINCE THE NEST WAS INSTALLED. MOTHER SPEAKS ENGLISH, BUT IF COMMUNICATION IS A PROBLEM, CALL DAUGHTER - DEBORAH AT 951-550-7709.