American Institute of Certified Planners (AICP) Practice Exam

By how much can lowering a thermostat by 1 degree Fahrenheit reduce heating bills?

1. 1%

2. 5%

3. 3%

4. 10%

The correct answer is: 3%

Lowering a thermostat by 1 degree Fahrenheit can reduce heating bills by approximately 3%. This reduction is based on energy efficiency principles, which suggest that every degree you lower your thermostat can lead to a decreased energy demand. Maintaining a slightly lower temperature reduces the workload on heating systems, leading to less fuel consumption and lower utility costs. While there are variations based on climate, building insulation, and the specific heating system, a figure close to 3% is a widely accepted rule of thumb for many households. This understanding is important for planners and homeowners alike, as it promotes energy conservation strategies that can lead to significant savings over time when applied consistently across the heating season. Choosing any other percentage would not accurately reflect the commonly accepted energy-saving estimates associated with thermostat settings.