Oh boy. I love this. I love this so much that I bought the first one to try, then immediately ordered 6 more for the other bathrooms in this house and for the bathrooms in our second home too.The installation is easy, quick and without need for any tools or tradespeople at all. In fact, the most difficult part of the installation was just the awkward position I needed to be in for one of our toilets, b/c it's installed fairly close to the vanity and getting my hand up and into that area to tighten the nut was a tad awkward.My sister just renovated their bathroom and got a Toto toilet with a built in bidet. That thing is lovely but it required a plumber to re-pipe and also an electrician to run power behind the toilet and install the control panel next to the toilet as well. It's a great system and her bathroom was being torn up anyway for her renovation. In our case, I didn't want to tear our bathroom walls up just for that so I decided to try this first.Yes, this spray uses water directly from the water supply so it is not heated. At first I thought that would be a problem having a jolt of cold water sprayed up in my netherlands, but it actually feels refreshing and clean.Installation is super easy. This comes with a valve splitter that connects to the toilet tank. Remove the water line that currently connects from the main water supply to the underside of the toilet tank. Where that used to connect to the tank is where the splitter now gets connected. The main water line and the bidet hose now get connected to that splitter.If your bathroom set up doesn't give you a lot of room next to the toilet to work in, I found that connecting the bidet hose to the splitter before connecting the splitter under the tank helped. Yes, it's a little awkward screwing the connector on with the hose already attached, but it's the lesser of 2 evils compared to trying to get your hand up under the tank to screw on both the hose and the water line.The bidet line has a on/off valve of its' own. It's interesting that most valve levers are designed that they're parallel with the pipe when they're open, and perpendicular to the pipe when they're closed. That's been a standard "rule" and visual reminder that's been ingrained in my brain for years.This valve is the opposite. When this valve is closed, the valve lever is parallel (vertical) to the pipe and when it's open, the lever is (horizontal) perpendicular to the pipe. There are markings on the lever to show on-off direction, but since the valve is installed back and under the toilet tank, that's not really visible once it's in place.An important thing to mention, is that the installation instructions note that the bidet line should not be kept under pressure all the time. In other words, keep the water valve closed when you're not using it and only open it when you use it. After you're through, close the valve and release the pressure to keep the hose empty.It uses a similar hose to the kind you find with a handheld shower spray. These kinds of hoses aren't rated for constant pressure so it's important to always turn it off when you're finished using it.Our water pressure is quite high and at first we found that pressing the spray lever down fully was a bit too strong.We played with either only pressing the lever down part way, or only opening the spray valve partway. Either way worked, but was very prone to user error. In the end, I ended up adjusting the overall water pressure by opening the main valve at only about 75%.Keeping the main valve open at only 75% means that when we use the bidet spray, we just fully turn the bidet valve open and also don't have to think about needing to only partially depress the spray trigger either.The only thing this affects, is that it takes a smidge longer for the toilet tank to fill because it's now filling at a slightly slower rate.One last thing to mention is that not all of our toilet tanks are shaped to allow the nozzle bracket to hang on the toilet tank. See photos of one of our tanks where the shape of the tank cover and location of the flushing handle don't give space enough for the bracket holder.In this case, I unscrewed the nozzle holder from the hanger and flipped it upside down. Then I turned the entire holder upside down and stuck it on the side of the toilet bowl using some strong double-stick tape. I first used silicone tape but the slick-ness of the porcelain toilet caused the bracket to slip. I pulled that off and used Gorilla Heavy Duty Mounting Tape instead. It's been holding strong with that tape for about a month now, so hoping it'll stay secured this way.Mounting it to the bowl this way means the hose does lay on the floor, but an added benefit to this mounting location is that it's also a bit more comfortable to just reach down for the sprayer rather than have to reach up-and-behind for it if it's hanging on the toilet tank.Super happy!