Glossary: BTU Capacity
**BTU Capacity** is the thermal cooling or heating power output of an HVAC system, measured in British Thermal Units per hour (BTU/hr) or kilowatts (kW).
HVAC capacity Sizing
Sizing capacity accurately prevents equipment short-cycling. A standard baseline is 20 BTU/hr per square foot of room area, adjusted for solar window loading and occupancy loads.