How To Replace a Toilet

Consult a FlushKING Professional first:  Replacing an old toilet is usually a project of last resort, though color, style, and the need to modernize an old bathroom may be equal motivators. The new mechanisms in your new toilet will save both water and money. FlushKING professionals are ready to advise you on the supplies, tools and information you’ll need to do the job correctly and get that new one working for a long time.

Step by step guide to Disconnect and Install a Toilet

The first step is to get rid of all the water in the toilet. Turn off the water supply valve and flush the toilet, holding the flush as long as possible. Force remaining water into the pipes with a plunger and remove the rest with a sponge. Don’t forget to remove any remaining water in the tank, toilet base and toilet bowl as well so that the bathroom floor overall is not wet.

Next, disconnect the water supply line where it attaches to the toilet. Take the dome caps off the bolts at the base and remove the bolts. Then, remove the bolts that connect the toilet tank to the seat -- and carefully remove the tank. Next, remove the connector seal (pan connector) that fits between the bowl (the pan) of your toilet and the wall at the floor. Remove the toilet. Note that you may need to cut away any badly rusted bolts with a hacksaw.

Now, you’re ready to install your new toilet! First, you must plug the hole in the floor to prevent gases entering your home, or dropping tools into it. Next, remove and discard all the old bolts and wipe the surface clean. Replace the bolts in the flange. (The toilet flange must be perfectly level to ensure proper connection to the waste pipe.) Now, you’re ready to install the new toilet pan connector on the toilet. Next, REMOVE THAT RAG and lift the new toilet into place so that the anchor hold-down bolts fit smoothly through the holes at the base. You should be able to tighten these bolts by hand, though some installations require an adjustable wrench.

Replace nuts and washers at the base; put new caps on the anchor bolts; insert tank bolts and gasket from the inside and place the gasket around the hole at the base of the tank; place the tank on the main part of the toilet, aligning the bolts and holes; put in place and tighten washers and nuts (not too tight!); install the toilet valve assembly, if not pre-installed; install the toilet seat, reconnect the water supply line, and turn the water on.

Other Parts You May Need for Toilet Installation

If not included with your new toilet, FlushKING has in stock a flexible mount lever dual flush valve; push button dual flush valve; standard flush syphon; cistern fixing kit; and side entry, standard bottom entry and adjustable fill valve. We stock cistern adaptors to convert valves to 2-inch outlet cisterns for top press and cable flush valves. We also have a cistern fixing kit and a close coupling kit for connecting the toilet cistern to the pan on a close-coupled toilet, complete with coupling plate, bolts, washers, rubber washers, wing nuts, and replacement doughnut washer. Our adjustable bottom entry fill valve is available with brass shank or plastic shank.

View all FlushKING parts

View our toilet repair video guides with step by step instructions