Plumbing question re pressure

fizz4, Jan 18, 10:50am
We have a gas infinity system but when the weather is as hot as it has been, there is a need for a cool shower, but the water barely dribbles out when on cold. How do we fix this problem? Any ideas? Thanks in advance

lythande1, Jan 18, 11:36am
Equal or Unequal Low Pressure: If your hot water pressure is low then sometimes the cold water pressure for your shower will have been intentionally restricted with a pressure reducing valve or a flow restrictor to make the hot and cold water pressure equal. This has been done to help your shower water mix more evenly.

So change to a mains system.

tweake, Jan 18, 12:59pm
not sure what system you have but many systems you can adjust the temp, so there is little need for much cold water. probably find the cold water side of the shower has been restricted. there usually is an adjustable restrictor at the mixer. i'm assuming cold water supply at the other taps is ok.

kitkat66, Jan 23, 8:38am
Unscrew the shower head and remove the plastic water saver.

korban, Aug 23, 8:59am
The Rinnai infinity water heaters are all mains pressure