We live on the top of a hill and thus have fairly low city water pressure (35psi) arriving at our house. I have a chance of saving quite a bit of money on my water bill by potentially reducing this pressure a bit further (see How can I determine what size main water meter is required?).
To compensate, I might have to consider getting a residential pressure booster pump (like this one) as suggested by @virtualxtc in an answer to the question mentioned above. Before deciding to do so, I have a couple of general questions about these pumps:
- If such a pump breaks, what happens to the water supply to the house? Does it simply go back to the pressure it had before installation of the pump? Or is the pressure now much lower? Or, worse, would this shut off water to the house entirely? (Let's only consider things like motor failures, since I would expect these to be much more common than tank or pipe ruptures)
- How long can I expect these pumps to last before an expensive repair or replacement?
- Do these pumps use a "noticeable" amount of electricity?
- I guess, if anyone knows it, the most useful thing to know would be a rough idea of the total annual cost of ownership that I would need to expect.