Heat rises, the attic radiates from above, and most two-storey homes have one thermostat sitting in the coolest spot in the house. The A/C satisfies the main floor and shuts off while upstairs is still 27°C.
Real fixes, cheapest first: partially closing main-floor supply vents to push air upstairs, running the fan in ON during heat waves to keep mixing air, and fresh filters plus clean returns so airflow isn't strangled.
Structural fixes: airflow rebalancing at the ducts, attic insulation to cut the radiant load, or a ductless head for the upstairs — often cheaper than people expect and transformative for sleep. We diagnose which one your house needs rather than guessing.
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