I have 2 questions
1- How can I take the air out from the hot water pipes.
I bought a house and the plumbing was re-done just before and also a new gas hot water tank was installed.

Sometimes the noise scares my kids.:D

2- Why do we have a hard time to have a shower with luke warm water?
We can't adjust it it's either gets too hot or too cold.
Was there suppose to be a regulator or something set up?

We have 2 wells, 1 with an internal pump and one external.
We have the 2 water tanks then it goes to the gas water heater tank then it goes out to the kitchen and then the bathroom.

Thanks in advanced