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Low hot water pressure

My latest issue....
I have a higher water pressure on the cold side versus the hot water side. This is the same for every water fixture in the coach. This isn't a major issue for the faucets but is a problem in the shower.

In the shower, I get fairly strong water pressure when on cold only but as you increase the hot water to a comfortable temperature, the pressure drops to something that barely resembles a "shower".

I did have the mixing valve replaced on the Aqua Hot. Somethings tells me the mix is hot/cold mix not the issue though. This has to do with volume. Any thoughts on what could be restricting the hot water flow? 
Fred H.
1996 Foretravel U320 4000 Build #4993 (Previous motorhomes 1985 Airstream 345, 1977 Argosy 20)
Sevierville, TN
ViewRVs.com

Re: Low hot water pressure

Reply #1
Do a search there have been posts about this issue and a way to de-lime the AH
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Low hot water pressure

Reply #2
Fred,

It cold be calcium buildup. When the mixing valve was replaced was it full of calcium?  Have you acid washed your system with vinegar lately? The hot side always percolates calcium out more than the cold side at the brass PEX fittings.

Pamela & Mike
Pamela & Mike 97 U 320

"It's not what happens to you, but how you react to it that matters."