North Carolina Home Inspector Practice Exam

A one-ton air conditioning unit is rated at 12,000 BTUs, which refers to its cooling capacity. The term "ton" in this context is derived from the amount of heat one ton of ice can absorb as it melts in a 24-hour period. This equates to the removal of 12,000 British Thermal Units (BTUs) of heat per hour. Therefore, when determining the cooling capacity of air conditioning systems, it is essential to understand that a one-ton unit translates directly to 12,000 BTUs. This understanding is crucial for both home inspectors and HVAC professionals as they assess the adequacy of cooling systems in residential settings.