Interpretation #9501
Published February 24, 2026
Original Request
- Code Version
- 2023
- Code
- ENERGY
- Code Description
- Chapter
- 4
- Section
- 403.2.7
- Topic
- Hot gas reheat and Exception 7
Question
Does a Hot Gas Reheat coil satisfy the Exception 7 for "Systems requiring dehumidification that employ energy recovery in series with the cooling coil"?
Answer Published 02/20/2026 at 2:18 PM
Yes, systems that require dehumidification can meet the requirement for hot gas reheat by using an energy recovery system in series with the cooling coil.
Commentary
The primary purpose of reheat in HVAC is to independently control space humidity without overcooling the room. By reheating air that has been cooled below its dew point for dehumidification, the system provides dry air at a comfortable, neutral temperature, preventing "cold damp" conditions