it could be one of two things. either the water lines to your bath tub arn't sized properly or you have something in your water line that has pushed thruogh and got cought around your shower valve. if it's a sizing problem your tub would be at the end of the run on your system, (it would be furthest away from your water heater). If it's your valve you can shut off your water main and pull the valve stem. Then quickly turn your main on and off a couple of times to blow out any debri. THis is usually caused by sediment in the water heater that gets shaken up when the heater is filling. == Answer== If new house and always did it with slab floor, it could be crimped hot water line under slab, something in hot side of valve and if copper water lines were used, i have seen the pipe go all the way into a tee, and it was blocking the water outlet line to faucet. If it is old house it will be most likely something in hot water side of faucet. I would call plumber. There are still other things it could be like temp. valves.
The shower head possibly has mineral deposits restricting the flow
More than likely a blockage, leak, or bad installation. If some other showers, toilets, and sinks are having problems with running water then it's likely a problem with the entire water system, usually bad parts or a leak.
This does vary slightly according to the shower, but for a shower without a pump, using a gravity feed, a water pressure of at least 0.1 bar is recommended. If your water pressure is low you will need to install a pumped shower.
Because it effects the water pressure of the shower. This causes the temperature of the water in the shower to also change.
There is a screen and/or a water saver in the shower head. The screen may be plugged with sediment from in the water.
Its a loss in water pressure to the shower.
May be build up in the valve itself or the shower head.
I will say you can take a look at aquasana shower water filter.
The flow of water from the shower creates a low-pressure area inside the shower stall, causing the shower curtain to be drawn inward due to the difference in pressure between the inside and outside of the shower. This phenomenon is called the Bernoulli principle, where higher speed of a fluid (in this case, the water spray) results in lower pressure.
The simplest and lowest cost solution is to replace the shower head with one designed to increase the pressure.
Yes and what is the question?
when the water pressure is low in the shower
i found a great website for discount shower heads, but it also has a great support section with step by step pictures and instructions, including tips on increasing water pressure. htp://www.showerstore.com