In January of 2023 I purchased and installed a Digital Water Pump Controller. RV water pumps are typically noisy because they run full blast or off. This is also hard on the pump itself. A digital controller makes the pump smoother, quieter and more efficient. It is a pricy at about $200 but since the pump in the LTV was quite loud, I purchased the unit and installed it in the Serenity.
The company that sells them: https://www.irvwpc.com/
It was a pretty easy install, I put it under the dinette seat right next to the water pump. It is not too handy to read the LEDs but I should only need to read them if there is a problem.
It has made the pump much less noticeable as well as having better control of the water flow.
