The recommended indoor relative humidity level for residential cooling in summer is?

The recommended indoor relative humidity level for residential cooling in summer is 50% at 75 degrees. Maintaining humidity at this level is crucial for comfort and health. High humidity can make the air feel warmer than it really is, leading to discomfort and increasing the strain on cooling systems. It can also promote mold growth and other moisture-related problems. At 50% relative humidity, the air feels more comfortable, allowing people to stay cooler with less energy consumption by air conditioning units, leading to improved efficiency.

This balance helps create an environment that feels pleasant while also protecting the integrity of the home and its inhabitants' health. A relative humidity level higher than this can lead to a clammy and uncomfortable atmosphere, while lower humidity might cause dryness and potential respiratory issues.