Residential heating systems typically range from:

In residential heating systems, the capacity typically ranges from 50,000 BTUs to 150,000 BTUs. This range is generally adequate to heat most homes, considering average sizes and insulation levels. BTU, or British Thermal Unit, measures the amount of energy required to heat one pound of water by one degree Fahrenheit.

When selecting a heating system for a residence, factors such as the square footage of the home, climate, insulation quality, and the number of windows and doors significantly influence the required heating capacity. Residing in colder climates might necessitate systems at the higher end of this range, while in milder areas, a lower capacity may suffice. Therefore, the correct answer reflects the common specifications found when surveying residential heating systems for efficiency and effectiveness in maintaining comfortable indoor temperatures.

This range ensures that systems can achieve optimal heating without being oversized, which can lead to inefficiencies and higher operating costs. Other ranges listed do not accurately represent the typical residential heating capacities, signaling that they either extend too low or too high for standard residential applications.