A waste of money... and their guarantee, and quote, are not worth a penny. I usually don't leave feedback on anyone, let alone negative... but it's the holidays and I'm left with a leaking and unstable faucet!!
We had another plumber install a commercial-style faucet (with a sprayer) a few month back, but it became loose, so we had the faucet company send us a brand new replacement and hired Kesterson Plumbing to install the new faucet so it won't go loose anymore: that is the problem we were trying to fix. Install it they did, but it was loose the moment after they finished installation, and they didn't do anything about the loose condition. The plumber was young and inexperienced, so Kesterson sent a more experienced plumber a week later, and experienced he was, and he said that the faucet definitely needed a bracket to hold it in place. Really? Why install it and then explain? Why not explain that we need the bracket in the first place??? He promised to look for a bracket and get back to us... that was 10 days ago. Christmas is here and all things that go under the sink have been all over the kitchen since they installed it two weeks ago, and we're still waiting. The faucet is even leaking and now even more loose. We've stopped by their location twice, no plumber there, and they promised he will call us. Didn't call us a few days ago as promised, and didn't do so today. They can't be trusted. They got paid upfront, but they're unprofessional: why make a bad job at installing a faucet when it needs a bracket. We'll have to order a new faucet and a new plumber. I would not use them again.