What is the average temperature difference used in heat loss calculations when indoor temp is 75°F and outdoor temp is 25°F?

To determine the average temperature difference used in heat loss calculations, you subtract the outdoor temperature from the indoor temperature. In this case, the indoor temperature is 75°F and the outdoor temperature is 25°F.

Calculating the difference:

75°F (indoor) - 25°F (outdoor) = 50°F.

This temperature difference of 50°F is critical in HVAC calculations because it directly influences the heating load required to maintain comfortable indoor conditions. By understanding this average temperature difference, HVAC professionals can properly size heating equipment to ensure efficiency and comfort in a given space.

The other values presented, while they may represent different scenarios or specifics, do not accurately reflect the difference calculated from the provided indoor and outdoor temperatures. Using the average temperature difference correctly is essential for effective heating system design and performance.