We just moved into new construction house and are having problem with basic hot shower (not filling Tub, etc). We came from Condo world and been living there for past 8 years. Never had a problem with hot water in past 8 years.
-tri level townhouse
- Floor 1 = 1 bd + 1 bath
- Floor 2 = Living+ Kitchen + Powder room
- Floor 3 = 3 bd + 2 bath (one of them is master Bd+ bath)
- We are mostly using floor 1 bathroom right now and kitchen. Have not added furniture to floor#3 yet
However, our new Townhouse is causing us some grief especially with hot water. We have Rinnai RUR199iN model tankless water Heater. Model link belowhttps://www.rinnai.us/product/tankless-water-heater/rur199in
We have setup Rinnai Control WIFI module and have also setup app for re-circulation.
Out of 50 or so showers we have had, we would have had probably 5 hot showers probably. Is this how Tankless water heater works? Is there problem in our setup or plumbing? do we need to add insulation to metal pipes?
I have not increased temperature from 120->140 yet but I dont think that will fix problem.
what should I try to do next to find a solution to this problem?
here are the pics of the setup