Solar space heating units tend to be less expensive than solar water heating units because

Question

Quizplus · Accepted Answer

Air has a lower density than water, which means it requires less energy to move and circulate. This makes solar space heating units less expensive to operate than solar water heating units. Additionally, solar space heating units can often use passive systems that don't require mechanical components, further reducing their cost.

Solar Space Heating Units Tend to Be Less Expensive Than