Remove old shower head. Usually this means you just need to unscrew it – pretty simple! If it’s been on there for many years, you may need to use pliers.
Clean shower pipe. Remove any old pipe tape or washers.
Screw new shower head onto the shower pipe – and attach the hose if it’s a hand held. Most Waterpik® Shower Heads do not require any pipe tape – be sure to check your instruction manual.
It was extremely easy to install by myself (I'm a 50-something female and just bought my first house). I didn't even need plumber's tape and there were no leaks immediately after installation.