Which heating system typically requires a higher BTU output?

The correct choice reflects that boiler heating systems typically require a higher BTU output compared to the other heating methods listed. This is due to the nature of how boilers operate and the demands of hydronic heating systems.

Boiler heating works by generating hot water or steam, which is then circulated through pipes to radiators or heating elements dispersed throughout a building. To effectively heat larger spaces or to maintain a consistent temperature, a boiler must produce a significant amount of thermal energy—measured in BTUs (British Thermal Units). The higher BTU output is necessary to overcome heat losses through walls, windows, and other areas in the building, especially in colder climates where the heating load can be substantial.

In contrast, radiant floor heating typically operates at lower temperatures and can distribute heat evenly across a room, which can reduce the overall BTU output requirement. Forced air heating systems also have their own efficiencies but may not demand the same high BTU output as a boiler system, especially when comparing the heating methods under similar load conditions. Electric baseboard heating uses electric resistance to generate heat, which is often sufficient for smaller spaces or supplemental heating but generally does not demand as high of a BTU output as a boiler system for larger areas or extensive heating needs.

Therefore,