Comfort height vs standard height toilets
A couple of inches of height is the difference between sitting down and dropping down — and for some people it goes the other way.
By Sawyer V. · · How we research
The short answer
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Quick picks
Tap any row for the full write-up. Prices are checked against Amazon rather than remembered — where we have no verified figure the button says so.
| # | Product | Best for | Renter | Price |
|---|---|---|---|---|
| 1 |  Cadet PRO Two-Piece Chair Height Elongated Toilet Published at 17 in. high with the seat, 1.28 gpf, with a slow-close seat and wax ring in the box. | Knees, hips and taller adults | Owner-only | |
| 2 |  Colony 3 Two-Piece Elongated Toilet Same maker, same 1.28 gpf and 10 in. rough-in, not sold as chair height — and American Standard publishes no height for it. | Households with children or shorter adults | Owner-only |
What the numbers actually mean
“Comfort height”, “chair height” and “right height” are marketing names. The number behind them comes from accessibility standards.
Section 604.4 of the ADA Standards sets the seat height of an accessible water closet at 17 inches minimum and 19 inches maximum above the finished floor, measured to the top of the seat. That is the range “comfort height” toilets are built to.
The same standards allow residential dwelling units a wider range — 15 to 19 inches — which is roughly where standard-height toilets sit. So the practical difference between the two categories is typically a couple of inches.
Note what is measured: the top of the seat. The seat itself adds height, which is why American Standard publishes the Cadet PRO as “17-in. high with seat”.
Who comfort height helps
Taller adults. A standard toilet puts the knees well above the hips, which is awkward to lower into and push up from.
Anyone with knee, hip or back trouble. The less distance you drop and rise, the less load goes through the joints. This is the main reason people search for it.
Anyone who uses a walker or transfers from a wheelchair. Matching the seat to the height of a chair is the whole point of the ADA figure.
Who it does not help
Small children, whose feet will dangle and who may need a step.
Shorter adults, for the same reason — a seat that suits a tall person can leave a shorter one perched with feet off the floor.
In a shared household, the right answer is often the lower end of the range. The Cadet PRO’s published 17 inches is exactly that.
Measure yours before you buy anything
Measure from the finished floor to the top of your current seat. If it is already around 17 inches, you may have a comfort height toilet and the problem lies elsewhere.
If the difficulty is standing up rather than sitting down, a properly anchored grab bar often does more than two extra inches of height — and that is a fixture to have fitted into structure by someone who knows what is behind the tile, not something to improvise.
If the difficulty is reaching and cleaning afterwards, the bidet route may help more than the height. The limited-mobility bidet picks are here, and shower benches with published weight ratings are here.
A seat swap will not change the height much
A new seat changes height by its own thickness and no more. Bidet seats do add height — Brondell publishes its Thinline T22 at 3.9 inches — but that is a side effect rather than a solution, and it raises the seat without changing the bowl.
Both toilets here rate Owner-only on our install rating. A replacement is work on the property’s drainage and never a tenant’s change. If you rent and the toilet height is a genuine accessibility barrier, that is worth raising with your landlord as exactly that.
Every pick in full
2 we would buy. Each carries its Renter-Safe Install Rating, the published specs behind it, and the honest gap in what we know.
1. Best comfort height
Cadet PRO Two-Piece Chair Height Elongated Toilet
American Standard · 609AB001.020 · best for knees, hips and taller adults
Published at 17 in. high with the seat, 1.28 gpf, with a slow-close seat and wax ring in the box.
The American Standard Cadet PRO chair height is the pick because American Standard publishes the number that defines the category: “17-in. high with seat”.
That puts it at the bottom of the ADA range, which is where most people who want comfort height are happiest — high enough to make standing up noticeably easier, low enough that most adults’ feet stay flat.
The rest is well specified: elongated bowl, 10 in. rough-in, 1.28 gpf and WaterSense certified, a 3 in. flush valve and a “fully glazed 2-1/8 in. trapway”. Unusually, American Standard ships it with a “Slow-close seat, metal trip lever, color-matched bolt caps, wax ring, EZ-Install Kit” — most toilets make you buy all of those separately.
Renter-Safe Install Rating
- Drilling
- None
- Tools
- Not published
- Time to fit
- Not published
- Power
- None
- Reversible on move-out
- No
Why: A full toilet replacement on the property's soil drainage. American Standard ships the wax ring and seat in the box, which makes it easier for an owner and changes nothing for a tenant.
Read from published documentation, not from fitting one. American Standard — Cadet PRO chair height elongated toilet, published height, flush data and contents. How the verdict is derived: renter-safe ratings explained.
What’s wrong with it
10 in. rough-in only, which suits small and older bathrooms but not a standard 12 in. drain.
What we can’t tell you
No published MaP flush rating, and it was sold out on American Standard's own store at the time of writing.
Published specifications
| Rough-in | “10-in. (254 mm)” |
|---|---|
| Bowl shape | Elongated |
| Height | “17-in. high with seat” — chair height |
| Flush volume | “1.28 gpf (4.8 LPF)”, WaterSense certified |
| Flush valve | “3-in. flush valve” |
| Trapway | “fully glazed 2-1/8 in. trapway” |
| Included | “Slow-close seat, metal trip lever, color-matched bolt caps, wax ring, EZ-Install Kit” |
| Surface | EverClean antimicrobial surface; PowerWash rim |
| Warranty | “Lifetime on chinaware, 5 years on parts” |
| MaP rating | Not published |
| Availability | Sold out on American Standard's own store at the time of writing |
#ad Price $360.59 as of October 18, 2026. Prices change; Amazon’s listing is the one that counts. How we’re funded.
2. The standard-height counterpart
Colony 3 Two-Piece Elongated Toilet
American Standard · 250CB104.020 · best for households with children or shorter adults
Same maker, same 1.28 gpf and 10 in. rough-in, not sold as chair height — and American Standard publishes no height for it.
The Colony 3 elongated is the useful comparison from the same maker: a 10 in. rough-in, 1.28 gpf, WaterSense certified elongated toilet that American Standard does not market as chair height.
We have to be precise here. American Standard publishes no bowl or seat height for this model, so we cannot tell you exactly how much lower it sits. What we can say is that it is not sold as comfort height, and the Cadet PRO is.
It publishes a 3 in. flush valve, 2 in. trapway and 9 x 8 in. water surface, with the seat, wax ring and supply lines sold separately.
Renter-Safe Install Rating
- Drilling
- None
- Tools
- Not published
- Time to fit
- Not published
- Power
- None
- Reversible on move-out
- No
Why: Replacing a toilet means removing the old one, seating a new wax ring on the closet flange and reconnecting the supply. It is work on the property's drainage and never a tenant's change.
Read from published documentation, not from fitting one. American Standard — Colony 3 elongated 10 in. rough toilet, published flush data and warranty. How the verdict is derived: renter-safe ratings explained.
What’s wrong with it
Seat, wax ring and supply line all extra, where the Cadet PRO includes them.
What we can’t tell you
Bowl height — the one number this comparison needs — is not published.
Published specifications
| Rough-in | 10 in. |
|---|---|
| Bowl shape | Elongated |
| Flush volume | “1.28 gpf/4.8 Lpf” |
| Water efficiency | “WATERSENSE CERTIFIED” |
| Flush valve | 3 in. |
| Trapway | 2 in. |
| Water surface | 9 in. x 8 in. |
| Type | Two-piece |
| Included | “Color-matched trip lever” — “Toilet seat, wax ring and supply lines are not included” |
| Warranty | “Limited lifetime warranty on chinaware, limited 5-year warranty on all mechanical parts” |
| Bowl height | Not published |
| MaP rating | Not published |
| Availability | Sold out on American Standard's own store at the time of writing |
Source: American Standard — Colony 3 elongated 10 in. rough toilet, published flush data and warranty
#ad Price $224.37 as of October 18, 2026. Prices change; Amazon’s listing is the one that counts. How we’re funded.
Where to buy
Everything recommended on this page, in one place. Each link is an Amazon Associates link — we earn a commission at no extra cost to you, and it never decides a pick.
- $360.59View on Amazon
Cadet PRO Two-Piece Chair Height Elongated Toilet
American Standard · 609AB001.020 · Renter verdict: Owner-only
- $224.37View on Amazon
Colony 3 Two-Piece Elongated Toilet
American Standard · 250CB104.020 · Renter verdict: Owner-only
#ad Prices are not shown because we only publish figures we have verified on the day. How we’re funded.
Questions people actually ask
what is comfort height for a toilet
Roughly 17 to 19 inches from the finished floor to the top of the seat — the range Section 604.4 of the ADA Standards sets for accessible toilets. Comfort height, chair height and right height are marketing names for it.
how tall is a standard toilet
Lower than comfort height by a couple of inches. The ADA Standards permit residential dwelling units a range of 15 to 19 inches to the top of the seat. Many makers, including American Standard on its Colony 3, do not publish the height of their standard models.
is a comfort height toilet better for seniors
Often, yes — less distance to lower and rise means less load on knees and hips. If standing up is the hard part, a properly anchored grab bar may help as much, and it should be fitted into structure by a professional.
are comfort height toilets bad for short people
They can be. A seat at 17 inches or more can leave shorter adults and children with their feet off the floor. In a shared household the lower end of the range is usually the best compromise.
Sources
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