Got into a messy one here. 5,500 sq ft, 20 years old. No problem right? Wrong. Should be getting more money for this but oh well, you win some and lose some.
Here’s the system. 4 units. All package units on roof. 3 are electric heat pumps (various ages). 1 is a gas pack (newer).
Anyway, one thing that caught my attention is the HVAC wiring. I noticed 3 220 breakers labeled North AC (100 amp), Master Bed (40 amp), Master Bath (40 amp). Now there were units over each of these areas so we’re good there. However, there was a 4th unit that I could not find another 220 breaker for. No subpanels around either. Only one of them matched the required max breaker size, so it’s a referral to specialist regardless. My question is where is the 4th unit getting power from? I know not being there makes it tough to help, but any input would be great. What kind of methods have you seen when discovering this?