My hot water pressure is about half that of the cold.
This is what I've checked/done so far:
- Not the heater tank: The tub adjacent the shower has great hot water pressure
- Not the shower head: The cold water pressure is great
- Unlikely the cartridge: I just replaced the cartridge in an attempt to fix the pressure issue
This is everything I know about my setup that might help you diagnose the issue:
- I have a Moen 1222 cartridge
- I'm missing the temperature limit setter (plastic piece that fits between cartridge and handle adapter)
- To get a decent temperature (98F ish) I have to set the handle to about 10% of the way away from off
- That means most (about 90%) of my water temperature is almost scalding hot with poor pressure
- There's a very narrow window I can keep my handle in for comfortable temperature
- The water is fairly hard here
- In other questions on this site I've seen folks reference an anti-scalding mechanism that can be set but I can't seem to find it.
Here's a few pics to give you a sense of the equipment I'm working with:
I can't know for sure, but I think I have a Moen 2510 Four Port Cycle Valve like the one in the picture below:
