What is the required height above the floor for maintaining indoor temperature measurement?

The required height for maintaining indoor temperature measurement is typically established at 3 feet above the floor. This specific height is crucial because it provides a representative sample of the indoor air temperature where people generally spend most of their time, particularly in living and working spaces. Measuring at this height allows for accurate assessments, ensuring that HVAC systems are effectively monitored and controlled according to the temperature that occupants experience.

Measuring too low might provide biased results due to heat stratification, where warmer air rises and cooler air stays lower. On the other hand, measuring too high doesn't give an accurate representation of the temperature experienced at the comfortable living level. The selection of 3 feet strikes a balance, making it a standardized practice in HVAC design and indoor air quality measurements.