The installation is quite easy for "do-it-yourself" type folks, and requires "basic" plumbing skills. If you are uncomfortable installing kitchen faucets on your own, hire a plumber who can easily complete the job.

The stainless steel faucet is available in brushed nickel, which is a matte "stainless steel sink" finish.

Although the under sink conversion kit was made specifically for certain ionizers, you may be able use the under sink kit with other brands of ionizers. Generally, the main requirement would be that the ionizer has to be a "flow through" type; meaning, there cannot be an on/off button that you must press to start the ionizer running. The ionizer turns on simply by the faucet creating the water pressure to turn it on. In addition, you may need some tubing adapters to connect different hose sizes together. It can be a bit tricky to install this kit with other machines, but it can be done.

Not at all. The under sink conversion kit faucet is meant to be a stand-alone type faucet that installs in a different hole at your sink, near your regular kitchen faucet. If you have a soap dispenser, instant hot water dispenser or spray faucet that you are not using, generally you can remove those and install this faucet in its place. If you do not have another hole to use, you can drill a 1.5" hole next to your existing faucet through your sink top or countertop.

When putting the machine below your sink you want to make sure to have the machine close to the cabinet door in case you need to change a setting or replace your filter. But, other than changing the filter once or twice per year (depending on filter micron), most people do not actually play with the settings on the ionizer once they are set the way they want it. Once you find the pH level you are happy with, there's very little chance that you will need to change the settings on the machine.