Ok I just got a new pressure tank installed that is a bladder based tank. The guys who put it in installed a new cut-in/off switch and is set for 40/60. I have a softner in place that has 3/4 running to it which is next to the pressure tank. Coming from the well I have the black pe tubing which looks to be at least an inch.

I am going to be running new plumbing in the whole house the next few weeks and wondering what will be the best way to increase the water pressure. For some reason the hot water heat has 1/2 flexible copper going in and out of it. I was told that I should run a 1 1/4 or 1 1/2 main but I can't find CPVC (which was what I was thinking about using) to do this. Any suggestions of how/what to accomplish this with. I have a bath on the main floor with toilet and sink and a shower on the second floor with two sinks. I have used pex and have sweat copper so I am comfortable using cpvc, pex or copper just don't know what will give me the best results and what size of material and pipe to run. Any help would be great!

1. Measure water pressure coming into your house from the Street. See what you get. If it is more then 75 psi than install pressure regulator. If it is less then 75 psi than you don't have to install pressure regulator

2. Let's not confuse low pressure with low volume. They are two different things. If you have undersized pipes then you will always feel like you are not getting enough water (volume) to your shower and tub. Size your pipes according to the size of your house. But as a rule of thumb: Hot water should be no less than 3/4" pipe. Cold water main run should be at least 1" with 3/4" branches and 1/2" fixture feeds. You can even bump it up to step bigger pipe ( as somebody already suggested to you ) if your house is 2 story with several bathrooms.

3. If you have very low incoming water pressure from the Street than you may consider Booster Pump. Booster pump will bump up your pressure to desired PSI's.

4. There are large pipe sizes in copper. Use type "L" copper for your installation. If PEX than use 1" main manifold and run dedicated pipe to each plumbing fixture from that manifold.