Have Rheem 2.5 ton RQPL-B030JK installed in rental house, and also had 10-inches insulation blown in to attic, and then replaced all windows with energy star rated new ones. Had an old Carrier 2-ton package A/C that kept house cold, and would cycle off even during the hottest of days. This Rheem only cools air down by 13-degrees, even with outside temp at mid 80's. Generally, with thermostat set on 72, inside temp will be 78, with Rheem having been running all night and all during the day.
Installation Contractor contacted Rheem Field Service Tech, who said to replace expansion valve and filter. After doing this, still only had 13-degree drop, with 88-degrees outside. Then Rheem tech had Contractor check reversing valve for leakage, and this checked good. Rheem Tech is now contacting manufacture for further help.
In meantime, I went to electric company and looked up Kwh usage during summer months before and after Rheem installed. This showed before, usage was less in July and Aug. with old 2-ton Carrier A/C package, and before extra insulation in attic and before new windows.
I keep wondering if compressor at fault? I believe it is a scroll type. Has anyone run into this before? What else could it be? All the ductwork has been checked, and rechecked. Did I simply get a "lemon" package? Any ideas will be greatly appreciated. Thank you.