catalinajack
Guru
True. I don't have an accumulator and I have a tiny, tiny weep from the relief valve. However, I don't care and see no need for the expense, space eating, and complexity it adds to my system. I also don't need an accumulator to regulate delivery pressure as I use a Grundfos booster pump. It is overkill in terms of GPM delivery but we get constant pressure and flow every time we turn on the water with none of the on and off common with most 12-volt pumps.
OK to eliminate all air in WH If you have an accumulator. With no accumulator or air in WH tank more likelihood that you will over pressurize and leak out of the OTP relief valve. If / when you use a lot of hot water and WH heats from cold to hot you get expansion and P increases. Worth keeping an eye on.