How to Install a WaterSense Toilet
When we bought our 1958-model home, it was newly painted but there wasn’t much else that was new about the place. The toilets were old and less efficient than modern-style commodes, especially some of the WaterSense versions on the market. One might think it’s expensive to replace an old toilet with a water-efficient model, but it’s not. I was able to swap out mine for less than $120, all costs included. Here’s how:
First Step: Pick Your Size
The bathroom shown above doesn’t have much space and the water shut-off valve rests directly behind the base of the toilet. To keep the installation simple, I needed something that would fit the space. So I measured the distance from the bolts to the wall and found that a 12″ rough-in would do. I also figured that the toilet could not be longer than about 29″. Depending on your space, you may want to measure the toilet width, bowl height, or other elements.
Second Step: Purchase Your Toilet
I looked online — Amazon has a large selection of toilets — but had an easier time narrowing down potential toilet models in store at both Lowe’s and Home Depot. I found Home Depot had a better selection of more affordable toilet models, but maybe that’s just how the inventory worked out when I was looking. It turns out, Home Depot had a WaterSense model of the Glacier Bay 1.28 gallons per flush toilet with the round front for $98. The size fit, and I grabbed a new water supply connection to go with it.
Third Step: Remove the Old Toilet
This can be easy or tough depending on the toilet. Long and short, turn off the water at the shut-off valve on the wall. Flush the toilet and let the water run through. Use a sponge to dry out toilet bowl and the tank. Put a cup under the shut-off valve and unscrew the water line. Detach the line from the water valve and shake the water into the cup. Next, unscrew the T-bolts at the toilet base and use a utility knife to cut any caulk at the floor. Grab a friend to pop the toilet off the floor and keep it level to avoid water spilling all over the place.
Fourth Step: Donate the Old Toilet
There’s no reason to send the old toilet to the landfill. I loaded mine up, drove to the nearest ReStore, and donated the toilet. Perhaps it will get a new life with some more efficient guts. If you break the toilet or don’t have access to a place like ReStore, run a Google Search for a local recycler. You’ll find a home for what you have.
Fifth Step: Prepare for the Installation
The circle, or flange, on the floor will probably have a layer of old wax buildup. Use a drywall spackle or something like that to clean it off while making sure nothing drops down the hole in the floor. Clean around the flange to get the floor ready for the new toilet and wax ring. After a little preparation, you should be ready to go.
Sixth Step: Install the New Toilet
Installing the new toilet requires following the installation instructions that come with the toilet. Basically, put the new T-bolts in the flange and place the wax ring on the floor. Turn the new toilet base upside down and caulk the outside edge of the base. Carefully pick up the toilet, flip it around, line it up with the T-bolts, and place it on the wax ring. Shimmy the toilet into place and place a level on the top to make sure it’s even. If you have an uneven floor, use plastic shims to firm the foundation. Install the new water line connection and slowly turn the water on to make sure you have no leaks. Tidy up the rest — like the toilet seat and a bit of caulk around the floor line.
Seventh Step: Let the Installation Cure
The tile on my floor was uneven, so I used plastic shims to bolster the toilet base. Then I ran a bead of silicon-based caulk around the base and let that cure overnight. You probably don’t need that much time, but I wanted to let it cure for sure. With the shims, caulk, and cure, my water closet is now feeling more rock solid than ever before.
Troubleshooting and Other Thoughts:
Caulking the base seems to be a hot topic among plumbers. It’s code to caulk the base in some places and apparently not code in others. Some people don’t like the look, while others don’t like to cut and remove silicon if the toilet needs to be pulled. You can get a color-matching caulk if that’s a concern.
The T-bolts at the base of the toilet may be rusted and hard to unscrew when removing the existing toilet. You can try to loosen them with something from the hardware store or use pliers to grip the top while unscrewing. You might also just use a hacksaw to cut through the bolts. A new set will come with the wax ring and set you back a couple bucks.
Worst case scenario, shut off the water and hire a professional. That said, if you have a decent plumbing situation, it’s not too hard to convert to a WaterSense toilet for less than $120 plus a few hours of research, shopping, and labor.
Related Articles on JetsonGreen.com:
- Numi is a Smart Luxe WaterSense Toilet
- Niagara’s Stealthy New Efficient Toilet
- First Toilet System for Standard 2×4 Wall
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