Recently had my 18 year old Ruud condensing unit,Apollo hydroheat air handler and attic duct work replaced. The Air handler was rusting away, the pan was almost full of water and the duct was falling apart and it was the cheap gray plastic stuff with next to no insulation. The plenum on the air handler was about a foot long pyramid shape that had 5 ducts for 2 baths and 3 bedrooms and a 10inch duct that ran to the other end of the attic that fed 4 more ducts. There was some serious leaking going on. As bad as it looked the house stayed cool and comfortable!!
My home is 1100 square feet and located near Va Beach Virginia.
New unit is a 2 Ton Ruud 10Seer condensor and Apollo SA3024 air handler in the attic. The new duct is silver faced R6. The return is 14 inch with 14X30 merv8 filtrete filter located in center of the house hallway. The 12 foot air handler plenum feeds 9ea 6 inch ducts. 2 ducts are reduced to 3 inch for bathrooms. The duct liners are silver taped ( the expensive very sticky type) to the register collars and tie-wrapped and the insulation is then taped and tie wrapped. There is NO obvious leakage of air anywhere. The plenum is 12 feet long and fabricated from 1 1/2" Owens Corning Enduragold Ductboard.
The installer evacuated the system for approximately 30 minutes with a pump that had no gauge?? He also added no R22 to the factory charge.
Im concerned about the cycling times and air temps at the registers.
During the day using a laser thermometer I get about a 10-12 degree temp drop between the return air intake 72 and the register fed by the first duct on the plenum 60. The farthest register which is at the end of a 25 foot run has about a 7 degree difference at 65.
I feel a lot more air than before at all registers but seems like the temps should be lower??
My RH is running around 40% and there is a steady drip at my condensate line.
The high today was 85. Right now its 9:30 at night 76 outside with RH68 thermostat is set on 72 indoor RH is 35 and my unit is running about 10 minutes and then shutting down for 10-12. So far today the AC has run 8 1/2hrs out of 21.5 hrs
What do the pros think?? My biggest concern is that my register temps arent anywhere near 20 lower than my return intake temp?