Ricky spent a lot of time checking out the unit in the very hot attic..Said the filter was in serious need if changing..& actually had the correct size filter on his truck.( which was always a problem in the past) ..He was great .Spent time going over the newer unit in the basement installed 21/2 yrs ago that always had cold air leaking out due to a bad install .. The mechanical room is as cold as a meat locker & the temp is set at 78 for that area & the entire basement reads 72. He took time to cover leaking areas to keep the cold air from escaping..Hopefully that will help the first floor that remains 4 degrees hotter than it’s setting..that is on that system..Ricky was informative, hard working & extremely pleasant..Excellent worker !!! Only negative : Office communication needs work..extremely frustrating Which I generously gave an average..I think they just had a bad week…