Has anyone seen this before? My whirlpool hot water heater is leaking from the gas control valve. Suggestions?

I recently had a plumber installed a new FHW boiler and an indirect HTP SuperStor 45 gallon WH. The hot water in the main bath needs to be turned much higher than with the previous 25 yr old DHWH and only lasts about 15 minutes. I called my plumber and he said its possible that by turning off...

The hot water in my house periodically loses pressure completely and comes Bach after a few minutes when leaving the faucet on. The cold water is not affected. Why is this happening?

I bought a new hotwater heater (nat gas) GE brand and everytime it fills up, water starts dripping down the inside of the tank onto the pilot light/burner, until the tank is warm. I know it may be caused from condensation but it does it every single time i use hot water until the tank has heated...