We received a call from a client who is unhappy with the distribution of heat in their new townhouse. It is a 4 level townhouse with a FAU in the attic. Upstairs gets warmer than downstairs. Client’s heating guy wants to install a damper.
This dwelling was built in 2004.
First, HI’s don’t inspect for any kind of air flow or balance of an HVAC system.
Question: Is there an industry standard for the difference in temp change on a multi-level dwelling? Beyond checking for heat at each register, and air flow, at what point are you commenting on system equilibrium?