10 Questions
What is the most common type of central heating system used in the United States?
Forced-air system
In a common household furnace, what is used as the heat exchange medium?
Air
What principle is utilized in central heating systems to carry heat from one place to another?
Heat transfer principle
Which type of heating fuel is most widely used in the United States?
Natural gas
Where are hydronic heating systems more common in the United States?
Northeast and Midwest
What is the primary reason for using propane fuels in rural areas?
Natural gas pipelines are not readily available in rural areas.
Why is total electric resistance heating no longer common in cold climates?
It is more expensive than other heating methods.
In which areas are heat pumps preferred over total electric heat?
Warm climates
What is the main reason for the popularity of wood-burning stoves and furnaces?
They use a renewable resource and are relatively cheap.
Why have high-efficiency furnaces and boilers become popular despite their higher initial costs?
They have higher efficiency ratings, leading to energy savings.
Test your knowledge about heat transfer and central heating systems. Learn about the principles and methods used to distribute heat in modern households.
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