Some projects already have to limit their RH to 60% or below to meet the requirements of ASHRAE-55 for IEQc7.1. However, ASHRAE-55 has a larger window of acceptable RH levels, and the levels vary depending on temperature and air speed. IEQc10 does not pro

Some projects already have to limit their RH to 60% or below to meet the requirements of ASHRAE-55 for IEQc7.1. However, ASHRAE-55 has a larger window of acceptable RH levels, and the levels vary depending on temperature and air speed. IEQc10 does not provide the flexibility that ASHRAE-55 does. All projects irrespective of temperature and air speed, must limit RH to 60% or below. ASHRAE-55 also focuses on occupant comfort and does not address unoccupied spaces and times. IEQc10, however, demands that humidity is controlled at all times. Meeting these requirements may require dehumidification in many regions.