One other note if you have a water softener it too can cause low pressure in all faucets downstream from it and for the same reason as your tankless.
Tankless water heater low water pressure.
Vent free for indoor or outdoor use.
Starts up with only 2 psi.
As the system is still new we can rule out scaling or sediment buildup.
The burner is too noisy.
Plus it works at up to 120 psi.
Check for water leaks on the fittings you took apart.
Holds up to 150 psi.
The ideal water pressure for best results is between 2 8 and 110 psi.
The excel tankless propane water heater is equipped with a magnetic flow sensor that allows the unit to start up at only 2 psi water pressure.
Common tankless water heater problems hot water is not delivered instantly and other common tankless water heater problems are listed below.
Turn the gas back on and enjoy better pressure from your hot water.
Even if the valve is slightly closed it can cause a significant decrease in hot water pressure.
Most people have a low pressure problem after installing a new water heater.
The shower head is included in the package alongside a gas regulator and all the necessary adapters.
Each water heater has a shut off valve to use in case of emergencies.
How to check test the pressure.
Mount the heater on the side of a caravan to enjoy an outdoor shower.
Open several hot water until no air is coming out from the faucets.
Open the water valve on the supply side of the tankless water heater.
Water is not hot enough.
Ideal for small apartments hunting or fishing cabins small homes boats campers rvs and mobile homes.
The most common cause of low hot water pressure is the water heater shut off valve being partially shut.
If low pressure is due to the low flow showerhead for example and your tankless water heater cannot get the required water flow change the showerhead to a newer model.
All other tankless gas water heaters require at least 20 psi to start up due to their outdated technology.
In some cases this valve may have been closed and never fully opened again.
No expensive flue required.
It s compact and lightweight enough to be positioned pretty much anywhere.
Low water pressure after replacing the water heater.
Low water pressure startup.
Testing the water pressure is vital as it might indicate not only low but high pressure too.