What's this heater noise?

doc-ketamine

New Member
Supporting Member
Joined
Oct 28, 2022
Messages
15
Location
Lehigh Valley PA

When my heat is on, there is a relatively high-frequency clicking noise. I'm not versed in heating systems, but the noise is only on when the heat fan is operating. It's annoying ... where should I look to diagnose? What parts should I be looking to fix or replace?

I also have a lot of noise from my exhaust (94 YJ) but for some reason noise cancellation won't let me record my exhaust notes. 🙃