WELL THE INSTALLATION WAS VERY SIMPLE AND THE 5 MINUTE INSTALL THEY ADVERTISE IS TRUE, VERY SIMPLE TO INSTALL. I WILL HAVE TO LET EVERYONE KNOW ABOUT PERFORMANCE. THE REASON I BOUGHT THIS TERMOSTAT WAS MY OLD ONE WAS JUST NOT ACTING RIGHT. NO WONDER IT WAS THE ORIGINAL THAT CAME WITH THE HOUSE, WHEN IT WAS BUILT IN 1965, IT WAS TIME TO REPLACE THE OLD ONE. I BOUGHT A HUNTER BECAUSE OF THE OTHER QUALITY PRODUCTS I HAVE BOUGHT WITH THE HUNTER BRAND NAME, I HAVE NEVER HAD ANY PROBLEMS WITH HUNTER PRODUCTS, THAT SAYS ALOT ABOUT THIS COMPANY.. THANKS HUNTER AND I HOPE THIS THERMOSTAT LAST 45 YEARS LIKE MY OLD THERMOSTAT DID.... CHRIS ALLEN