Room-by-Room Mini-Split Sizing: Match Capacity to Each Zone
Size mini-split zones room by room by comparing design loads, head capacity, turndown, air mixing and manufacturer combination data before selection.
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AC Temperature Split Too Low: Why the Air Is Not Cold Enough
A low AC temperature split means the supply air is not much cooler than return air, but the cause may be airflow, refrigerant, load or measurement error.
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AC Temperature Split Too High: Causes and Next Checks
A high AC temperature split often points to low airflow, but refrigerant and measurement conditions also have to be checked.
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Why Square Foot AC Sizing Fails in High-Humidity Homes
Square-foot sizing fails in humid homes because latent load and runtime matter as much as sensible temperature drop.
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AC Temperature Split Explained: What the Supply-Return Difference Means
AC temperature split is the difference between return-air temperature and supply-air temperature, and it is useful only when airflow and conditions are considered.
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Room-by-Room Cooling Load: Why Whole-House Tons Are Not Enough
Room-by-room cooling load explains where the cooling is needed, not just how many tons the whole house requires.
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Blower Speed Too Low in Cooling Mode: Symptoms and Risks
If blower speed is too low in cooling mode, the system may have weak airflow, excessive temperature split, icing or poor room distribution.
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Ducts in a Hot Attic: How They Affect Cooling Capacity
Ducts in a hot attic can reduce delivered cooling even when the outdoor unit has enough rated capacity.
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AC Static Pressure Test: What Homeowners Should Understand
An AC static pressure test measures how hard the blower is working against duct, filter and coil resistance.
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Occupancy Heat Gain in AC Load Calculations
People add sensible and latent heat to a home, but occupancy is only one part of the cooling load.