Hi all, I have a home inspection client who is concerned that their 1 year old Ruud Ultra 5 ton heat pump system makes unusual noises at about 2AM (wakes them up). The unit sounds "normal" when I run it and they say it is usually just fine.
I am guessing that the noise has something to do with the defrost cycle and reversing valve. It is down to about 30 degrees in this area at 2AM. They describe it as a "Jet Engine" noise but I assume not that loud. Kind of a high pitched whine.
They are understandably reluctant to spend money on a service call if this is the way these normally sound.
Is a service call warranted?