What is the recommended indoor relative humidity for residential systems during summer?

The recommended indoor relative humidity for residential systems during summer is typically around 50%. Maintaining humidity levels at this percentage helps to ensure comfort and also enhances the efficiency of air conditioning systems. High humidity can make the air feel warmer than it actually is, leading to discomfort, while low humidity can cause dry skin and irritation.

At 50% relative humidity, the indoor environment can help mitigate issues such as mold growth and dust mites, which thrive in excessively humid conditions. Additionally, reaching this humidity level can assist in maximizing the cooling effectiveness of air conditioning units, allowing them to remove not only heat but also moisture from the air. This balance ultimately contributes to a more comfortable living space during warmer months.