Where Anna is very picky about the temperature in her home and wants full control of airflow and heat/cooling. She should install a system that includes: "a low differential" (Option D)
What is a Low Differential?The temperature differential in HVAC terms refers to the temperature difference between the inside and outside areas of the house.
The thermostat has an adjustable temperature differential setting that determines how frequently your system cycles. The lower the differential setting, the more frequently your system will cycle and the tighter the temperature will be maintained.
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