After a trip to the hardware store for an adapter for the 3-way water splitter, installation was not too difficult, however the excellent installation video does offer finer points that make a difference. And after installation....Ah what a little slice of heavenly Japan you can have in your bathroom! From the heated seat that guarantees you will no longer be shocked awake by a frigid seat during a winter's midnight pee, to the gentle blue nightlight that radiates in the bowl (coincidentally disguising #1 as clear water), to the feminine wash and tushy dryer that keeps paper pills banished... this is a throne fit for a QUEEN.This review was NOT paid for; I paid handsomely, but this throne's surprisingly sturdy build (for being plastic) makes me hope that it's going to be in my life for many many many years to get my money's worth.The worst thing about this toilet is the setup. I didn't have this many problems setting up my mom's toto. You need a lot of things and the stores won't have the parts you're looking for. Home depot doesn't have a 7/8 adapter T adapter. You're going to need 7/8 T adapter if the one in box doesn't fit your pipes. You're also going to need a 1/2 inch fip to faucet 3/8 comp to valve of you need a adapter. Thankfully, you can get this piece at home depot. You're also going to need some nuts to for the toilet seat bolts because the standard plastic ones that hold your seat down ain't going to fit either...I don't know what size fits. I got tired and just use it how it is or maybe I put that part on wrong...either way I regret not getting what I bought my mom.Living in USA had to purchase a small 6" line and adapter/valve insert (five dollars at Lowe's)- this seat installed easily and continue to work like a charm.I wanted to love this and it was almost like a dream until I went to use the dryer. Still soaking wet, the dryer literally does nothing. It makes a sound like it's doing something, and you feel some air but it won't dry you. It's incredibly frustrating because I bought this bidet for my family so we could be fresh and clean without using loads of toilet paper. No one wants to walk around with wet privates but you will if you're dependent on this bidet. I don't know why anyone would buy a bidet and not want a dryer option doesn't that defeat the whole purpose? We wanted to stop using toilet paper but that's not happening with this bidet.Great product! Functionality includes all the bells and whistles. The extra nozzles are plus. Easy to install and working well. The included T connector does not fit US standard. Need to buy separate T connector to complete the installation.Happy with my purchase!The item arrived with a t valve not properly sized for the USLove it, bought two.Love to buy it again