A new air conditioner in Phoenix is not a shopping decision, it is a sizing decision. The long term record for Sky Harbor puts the city at roughly 111 days a year at or above 100 degrees, with a normal July high near 106. A system that is half a ton off shows up as a house that never quite catches up in the afternoon, so we start with a load calculation rather than matching the tonnage of whatever is already on the pad.
That calculation looks at square footage, ceiling height, window area and exposure, insulation, and the condition of your duct system. Oversizing is the more common mistake and the more expensive one. An oversized system drops the air temperature fast, shuts off before it has evened out the house or pulled much moisture, then starts again. That short cycling wears out the compressor and the contactor early.
Ductwork gets checked before equipment is ordered. A new high efficiency condenser tied to leaking or undersized ducts will never reach its rated performance, and in an attic far hotter than the outdoor air that leakage pulls heat straight into the supply side. We tell you when the ducts need work, and we tell you when they do not.
Adams has been doing this from one shop in Phoenix since 1947, under Arizona ROC 245268, as a Carrier Factory Authorized Dealer. Every new unit we install comes with three years of maintenance included, which counts for more here than in most markets, because desert dust and monsoon debris are what shorten a condenser life.