Humber/Ontario Real Estate Course 4 Exam Practice

What is the correct description of capacity and efficiency in heating systems?

1. Capacity is expressed in BTUs, efficiency in percentages.

2. Capacity involves the amount of heat, efficiency measures cost-effectiveness.

3. Both capacity and efficiency are categorized as conventional, mid, or high.

4. All homes require the same capacity heating system.

5. Capacity dictates system size, efficiency dictates energy use.

6. Conventional homes use high-efficiency systems whereas others do not.

The correct answer is: Capacity involves the amount of heat, efficiency measures cost-effectiveness.

The description of capacity and efficiency in heating systems is accurately represented by the notion that capacity involves the amount of heat that a system can produce, while efficiency measures how effectively that heat is produced in relation to the energy consumed. Capacity is typically quantified in British Thermal Units (BTUs), which indicates the maximum heating output of the system. This highlights not only the output potential but also the system's ability to meet the heating demands of a space. On the other hand, efficiency, usually expressed as a percentage, reflects the ratio of useful heating provided to the energy consumed, allowing homeowners and professionals to assess how cost-effective the system will be over time. The other options may imply accurate aspects but do not provide the complete, clear relationship between capacity and efficiency as effectively as the selected option. Understanding this distinction helps in making informed decisions regarding the selection and evaluation of heating systems.