Every La Habra summer, the same arithmetic repeats. The condenser is sized for the house, the house is measured for the condenser, and nobody measures the ducts, original or twice patched runs crossing an attic that spends July afternoons past 130 degrees. Cooled air leaks out of those runs and radiant heat leaks in, and the far rooms report the difference while the equipment gets the blame.
The tell is the pattern of complaints: the room over the garage, the bedroom at the end of the longest run, the addition tied in as an afterthought. Those are distribution symptoms. A new, larger system pushing into the same ducts raises the electric bill more reliably than it cools the room, because the loss scales with the pressure.
The household discipline is simple: any replacement quote in this city should include a duct leakage read and a room by room airflow check, with sealing priced as its own line. In La Habra, the attic is not above the system. It is half the system, and the quote should prove it was read.
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