I'm not a plumber, just a homeowner who likes to do as many things as possible for myself. After watching some of the older installation videos, I watched the latest video which made use of the installation kit. The kit made installation very easy for an amateur plumber like me, and the result was virtually leak free. There was one, very minor slow drip on the sediment filter NPT fitting, which I had wrapped with Teflon tape, and that was easily fixed by taking apart that fitting and using pipe dope. Now my system is totally leak free. The installation kit saved me a ton of time, and was brain dead simple to use. If you want to do a self install of the Pelican while house filter and softener, you really want to buy this kit.