Shower Not As Hot As It Used To Be

Has anyone used hot water recently.
Shower not as hot as it used to be. I have recently fitted a new mixer shower from the bath store which i have to put on to full hot to get a warm shower. This is a more complex problem than the shower valve issue. Shower water not getting hot.
It takes time for the hot water heater to raise the temperature of the water in the holding tank to the desired level. Https amzn to 2quwf7p if you are having a issue where you shower is not very hot but your sink has very hot water then you might need t. A shower should be counted on to be good and hot when you need it to be.
Single handle shower configurations as opposed to set ups with a separate hot and cold handle have an internal cartridge attached to a valve that mixes water from your lines to meet your desired temperature and just like any other plumbing in your. If your shower water does not get hot or stay hot follow these troubleshooting steps to help you determine if it is time to contact a plumber. The new one has a larger shower head suitable for my boiler remeha avanta plus even if i put the cold on slightly it is not warm at all.
It is not an electric shower it runs off the water system not a combi boiler. But keep in mind that the hot water coming from a shower is coming from. If you have a hand sprayer in your shower and it gets hot when the regular shower turns off you should contact a professional plumber to have this issue resolved.
In older homes cross connected pipes were used to balance hot and cold water flow. The fitter has said there is not a problem with the shower or how it has been fitted but that it is my water system. Amazon hex key set.