No.
If your water pressure is low at all faucets, you can buy a gauge to fit faucets threaded for garden hose, they are about $10. You pressure should be 40-55psi. If pressure is low at all faucets, you may have a faulty PRV. This is the bell shaped regulator usually fitted where the water enters the building. A plumber can change these easily. Part costs about $60 and takes an hour to change -I do many and they are usually simple to change. If the pressure is low at just one faucet then remove and change the aerator. If that doesn't fix the problem you have a blockage in the shut off valve below it.
The simplest and lowest cost solution is to replace the shower head with one designed to increase the pressure.
A domestic plumber fits and repairs faucets, toilets, sinks, water heaters ,broken pipes, water filters etc.
Not really. What is he installing? What are you trying to say? A plumber can install showers and faucets. He can install a faucet in a shower. He can install any plumbing fixture. Also it should be is this sentence written correctly.
Yes, it means you need a plumber!!!
Increase the pressure to 40 PSI
water pressure
If you're not the greatest handyman, then yes you should probably call a plumber. For most problems with faucets though, it's an easy fix. It really depends on the situation.
Low water pressure or cold water main undersized.
You have to undo the aerator at the end of the faucet and clean the screen or plastic water saver out. It will be plugged with sand or sediment.
NOPE, actually it will cause more pressuyre drop do to friction losses
Now it's time to call a real plumber. == Answer== I agree. When you replace shower or tub walls, you should always replace your faucet while you can. Alot of people don't and the plumber does not like any better than you do.