MY ONLY CONCERN WAS IT TOOK FIVE DAYS TO GET A REPRESENTATIVE OUT TO MY HOUSE AND I HAD NO HEAT AT ALL. I HAD TO USE SMALL ELECTRIC HEATERS TO KEEP MY HOUSE AT 62 DEGREES DURING THE DAY BUT AT NIGHT IT GOT DOWN TO 56 DEGREES. I HAVE NEVER HAD TO WAIT FOR SERVICE AND THIS WAS KINDA UPSETTING! THE ONE REASON I WENT WITH GROGGS WAS THE EXCELLENT SERVICE AND EVEN AFTER HOURS THEY HAVE SENT A REPAIRMAN UP. I THINK THAT FIVE DAYS WAS ALITTLE LONG!!!!!!! BUT THIS WAS NOT JOHN'S FAULT.