Hot water in all three bathroom sinks BUT no hot water in the showers
We have recently purchased a new home. We had an inspection and all hot water was fine. After we closed and as we are now moving in over the next month we have discovered that all three showers don't have hot water. There are three full bathrooms in our new home. The Master has a separate tub (hot water OK here) two sinks (hot water fine here) and a separate shower (no hot water). The other two full baths have tubs with showers and neither have hot water, although the sinks all have hot water.
The kitchen and half bath sinks both also have hot water.
We have two 50 gallon hot water tanks that appear to be in-line with each other. Is it possible that one hot water tank goes to only the shower in the master bath and to the two tubs in the other full baths?
I've read similar posts on this site that talk about the cartridges being clogged but it seems odd that all three became clogged at once. Also I should note that our new home was vacant for at least six months since we've purchased it and started to move in.
Any suggestions and help would be greatly appreciated.