How To Buy a New Toilet

Give your bathroom a water-saving upgrade with a new toilet

This guide will tell you about the many features to consider when buying a toilet and the technology that makes them more comfortable, efficient and eco-friendly than ever.

If you need a toilet installed, The Home Depot offers full-service professional toilet installation.

Flush Power

The Home Depot’s flush performance rating system assigns each toilet a numerical score based on the toilet's ability to remove waste and resist clogging.

Flush Power

Flush power ratings are provided via independent testing by Veritec based on a scale of 100-1,000. For simplicity, the scores have been converted to a scale of 1-10. 

You will see these scores displayed on product packaging and signs in the toilet aisle of your local store.

Bowl Shape, Height and Style

Measure the amount of bathroom space you have available and consider your style preferences before choosing your new toilet. 

Tip: The distance between the floor drain and the wall is called the “rough-in.” The standard distance is 12 inches, but 10 or 14 inches are occasionally found in older homes. Determine the rough-in in your bathroom by measuring from the wall behind the toilet to the middle of the bolts on the base.

Bowl shape:

Bowl shape

Toilet height:

Toilet height


Type Configuration Points to Consider

• Most common type
• Generally more economical
• Easy to find replacement parts

• May require larger upfront investment
• Save space
• No hard-to-clean crevices
• Creates a sleek, stylish look

• May cost more to purchase and install
• Ideal for transfers from wheelchair or
• Requires thicker wall for mounting
• Drain for toilet must be on wall rather
than floor
• Easy to clean underneath

Water Saving Toilets

Toilets account for nearly 30 percent of an average home's indoor water use. Regulations now limit toilets to no more than 1.6 gallons of water per flush.

Water Saving Toilets

Save up to $90 per year on your water and sewage bill with WaterSense® toilets. New flushing technology enables water conservation without sacrificing flush power, so it is recommended that you replace any toilets installed before 1994.

Our Local Utility Rebate Finder will help you find out if your toilet purchase qualifies for a rebate from your local water district.

The Home Depot has developed its own Eco Options program to encourage Earth-friendly living and is a proud partner of the Environmental Protection Agency's WaterSense® program which includes low-flow toilets that use no more than 1.28 gallons per flush.


The Home Depot offers full-service professional toilet installation, and also sells complete toilet kits if you choose to self-install.

Toilet installation kits include everything you need in one box – tank, bowl, toilet seat and wax ring. (Supply lines are sold separately). These "all-in-one" kits ensure that you have the correct toilet parts the first time, saving you from return visits to the store to buy or exchange parts.

For details on how to install or replace a toilet, see our How to Install a Toilet project guide.