Sounds like your main line coming in is small if it's 1/2 inch stepping it up to 3/4 coming in then down to 1/2 inch would increase your pressure
This is probably a pressure imbalance problem or you have air in the lines. see the related video link provided.
Your local building department and the Plumbing Code, a normal test for a water system is to prime the system at the pressure it will be running, as long as it's not above 80psi and checking for visible leaks and pressure drop or meter movement.
I would`nt... It serves no purpose. If the water is off there is no pressure when you turn on the tap, hot or cold, so you would be heating water you can`t use.
No, cold water is piped into the hot water tank and is heated by electricity or gas, it then flows out to the hot water taps.
the hot water valve shut off valve shuts off the hot water. The cold water valve shuts off the cold water. ;()
The issue of low hot water pressure while the cold water pressure remains fine could be caused by a clog or blockage in the hot water pipes, a malfunctioning hot water heater, or a problem with the hot water valve.
The low hot water pressure in your kitchen sink could be due to a clog or blockage in the hot water line, a faulty hot water valve, or a problem with the hot water heater. The cold water pressure remaining fine suggests that the issue is specific to the hot water system. It may be necessary to check and repair the hot water line or heater to restore proper pressure.
Low hot water pressure compared to cold water pressure can be caused by various factors such as a clogged hot water pipe, a faulty hot water heater, or a malfunctioning pressure regulator. It is important to investigate and address the specific issue to restore balanced water pressure throughout your plumbing system.
Pressure is the same whether hot or cold.
The low hot water pressure in your shower may be due to a blockage or buildup in the hot water pipe or valve. This can restrict the flow of hot water, causing lower pressure compared to the cold water. It is recommended to check and clean the hot water pipes or consult a plumber for further assistance.
The issue of low hot water pressure while cold water pressure remains normal could be caused by a blockage in the hot water line, a faulty hot water valve, a malfunctioning water heater, or sediment buildup in the hot water tank. It is recommended to check these potential causes to identify and resolve the issue.
This is probably a pressure imbalance problem or you have air in the lines. see the related video link provided.
Possibly a frozen line huh?
Lots of stuf can cause it including sediment or a blocked supply line
Hot or cold?
water pressure
Ones hot and ones cold.