Prepare for your Residential HVAC Installation Exam with engaging quizzes and multiple-choice questions. Each question includes hints and insightful explanations to ensure you're ready for the test!

Practice this question and more.


What factor increases the rate of heat transfer from one side of a structure to the other?

  1. Humidity level

  2. Insulation material

  3. Temperature differential

  4. Wind speed

The correct answer is: Temperature differential

Heat transfer occurs when there is a difference in temperature between two objects or areas. Therefore, it makes sense that the temperature differential would play a significant factor in increasing the rate of heat transfer from one side of a structure to the other. As for the other options, humidity level and insulation material may affect the overall energy efficiency of a structure, but they do not directly impact the rate of heat transfer. Wind speed may affect the rate of heat transfer on the exterior of a structure, but it is not a factor that applies to all sides of the structure. Therefore, C is the most accurate and logical choice.