Best Compact Dual Flush Toilet: DeerValley Leads

The best compact dual flush toilet is the DeerValley DV-1F52812R, because it's the only pick here built for a 10 in rough-in and it measures 27.2 in deep with a 1-year warranty in writing. If your closet flange sits the standard 12 in from the wall, the HOROW T0338W is the better buy at a 17.3 in chair-height seat. Prices in this category climb in fairly clear steps. Entry money buys a bowl, a soft-close seat and a dual flush valve. Mid money adds lower flush volumes. Premium money buys a published warranty and a rough-in you can actually match.

Best compact dual flush toilet at a glance

How I screened these five listings

I built this shortlist around buyer profiles rather than a scoring sheet, because a toilet either fits your bathroom or it does not. There's no partial credit.

Four profiles came out of the data:

1. The tight-flange owner. Older houses often put the closet flange 10 in from the finished wall. Only one pick here publishes a 10 in rough-in.
2. The comfort-height buyer. Getting up off a low bowl gets harder every year. Two picks publish a seat height figure, at 17.3 in and 16.25 in.
3. The water-bill watcher. Flush volumes here split into two groups: 1.1/1.6 GPF and 0.8/1.28 GPF.
4. The tight-budget replacement. Someone swapping a cracked bowl who needs the job done cheaply.

Every product in this set is a one-piece toilet from the same Amazon category, so tank-to-bowl gasket leaks are off the table across the board. What I cut from consideration were the specifications nobody published. Two listings give no weight at all, and three publish no warranty. I've said so in each section rather than quietly filling the gap.

A note on the search itself. "Compact" is not a standardised measurement, and Amazon's results for a best compact dual flush toilet include bowls that are 30.7 in on the longest listed side. Judge each depth figure against your own tape measure before you trust the word compact on any listing.

Why rough-in distance decides this purchase

Rough-in is the distance from the finished wall to the centre of the closet flange bolts. It is the one number that turns a good toilet into a returned toilet, and it's the reason I put the DeerValley DV-1F52812R first.

Most guides to the best compact dual flush toilet lead with flush volume. Flush volume matters to your water bill over years. Rough-in matters on the afternoon the box arrives. Get it wrong and the tank hits the wall or the bowl sits 2 in proud of the flange, and neither is fixable with a longer bolt.

Here's the trick with this set. Four of the five picks are built for a 12 in rough-in, which is the modern standard. Only the DeerValley DV-1F52812R publishes a 10 in figure, and HOROW's listing says the T0338W is also offered in a 10 in version, though the one in this set is the 12 in.

Measure before you buy. From the wall to the centre of the bolt caps at the base of your existing toilet, not to the edge of the bolt. If your tape reads 10 in, your shortlist here is one item long. If it reads 12 in, you have four real choices and you get to pick on depth, seat height and flush volume instead.

1. DeerValley Compact One Piece Toilet Standard Seat Height — Best overall

The only pick here that fits a 10 in rough-in, and it backs that with a published 1-year warranty.

Best for: a bathroom with a 10 in rough-in and a door that clears the bowl by inches Skip it if: your closet flange sits 12 in from the wall

Rough-in is what wins this. The DV-1F52812R is listed at a 10 in rough-in, and nothing else in this group is. Older homes and half-baths built into stair voids commonly use that spacing, and a 12 in toilet dropped onto a 10 in flange simply will not seat. The listed dimensions are 27.6 x 27.2 x 15 in, so it's a narrow 15 in across, which is what matters when a vanity or a door swing crowds one side.

Flush is quoted at 1.1/1.6 GPF dual flush, which DeerValley says saves up to 16,500 gallons a year. The bowl is fully skirted, meaning there's no ribbed underside collecting dust behind the base. The listing describes a soft-close PP seat rated at 28dB, plus a kit with wax ring, bolts and wrench included. Standard seat height, not chair height.

The trade-off is money and comfort. This is the second most expensive pick here, and it's a standard-height round bowl rather than the 17.3 in chair height the HOROW offers. At 78 lb it's the lightest listed weight in the set, which helps on stairs.

Pros:

• Only 10 in rough-in pick in this set
• Published 1-year warranty, one of two here
• Lightest listed weight at 78 lb
• Narrow 15 in listed width
• Fully skirted base, no crevices behind the bowl

Cons:

• Standard seat height, not chair height
• Second most expensive pick here
• Round bowl rather than elongated
• Only one seller lists it

2. HOROW T0338W One Piece Toilet with ADA Chair Height 17.3" — Best premium

The shallowest listed depth of the 12 in rough-in picks that publish a seat height, and the only one at 17.3 in.

Best for: adults who want a 17.3 in chair-height seat in a shallow footprint Skip it if: you need to carry it upstairs alone

The seat height is the point. HOROW publishes 17.3 in floor to seat, which the listing calls ADA chair height, and that is nearly a full inch above the 16.25 in Casta Diva figure. On a fixture you use several times a day for a decade, that inch changes how your knees feel. The listed dimensions are 26 x 26.6 x 15 in, and HOROW describes the bowl as compact elongated, so you get elongated seating in a footprint close to a round bowl.

HOROW lists siphon flushing through a fully glazed 2 in trapway with 1.1 GPF and 1.6 GPF settings. Large side access openings are described for the floor bolts, which makes a solo install less awkward. It also carries a 1 Year warranty, one of only two published warranties across these five. This is the pick buyers here choose most often, and it sells faster than the rest of this set.

Two real costs. It's the most expensive pick in the group, and at 99.2 lb it's heavy enough that a staircase becomes a two-person job. The 12 in rough-in also rules it out for older flange spacing, though HOROW's listing mentions a 10 in version exists elsewhere.

Pros:

• Highest published seat height at 17.3 in
• Published 1 Year warranty
• Fully glazed 2 in trapway per the listing
• Shallow 26.6 in listed depth
• Elongated bowl in a compact footprint

Cons:

• Most expensive pick in this set
• Heavy at 99.2 lb, awkward for a solo lift
• 12 in rough-in only in this version
• Only one seller lists it

3. DeerValley Compact One Piece Toilet with Comfortable Seat — Most versatile

The second-cheapest pick here, with the same DeerValley feature set moved onto a standard 12 in rough-in.

Best for: a standard 12 in rough-in on a tight budget Skip it if: you want a published warranty in writing

This is the sensible middle of the group. The DV-2F52531 is listed at 27.8 x 24.6 x 13 in, so it's the narrowest listed width in this set at 13 in, and its 24.6 in depth is among the shortest here. Narrow and shallow together is unusual, and it's what makes this the easiest pick to slot beside a small vanity or into an under-stairs cloakroom.

DeerValley repeats the same claims as its 10 in sibling: 1.1/1.6 GPF dual flush with up to 16,500 gallons saved annually, a fully skirted body, a soft-close PP seat described at 28dB, and an install kit with pre-assembled valve, wax ring, bolts and wrench. Same flush volumes, same seat, standard rough-in, lower price position. Two of the five picks come from DeerValley, and this is the cheaper of them.

The gap is paperwork and popularity. No warranty appears on this listing, while its 10 in sibling publishes 1-Year. It's also the slower seller of the two DeerValley models. And at 86 lb it's heavier than the 10 in version despite the smaller footprint.

Pros:

• Narrowest listed width in this set at 13 in
• Second-cheapest pick here
• Shallow 24.6 in listed depth
• Skirted body with no rear crevices
• Install hardware included per the listing

Cons:

• No published warranty
• Heavier than its 10 in sibling at 86 lb
• Standard seat height, no chair-height figure published
• Slower seller than the other DeerValley here

4. Casta Diva Compact One Piece Toilet for Bathrooms — Best for quiet operation

The lowest flush volumes in this set at 0.8/1.28 GPF, with a quick-release seat you can pull off without tools.

Best for: low-flow water bills and tool-free seat cleaning Skip it if: you need a listed weight before booking a two-person lift

Flush volume is where the AR03 separates itself. Casta Diva lists 0.8 GPF for liquids and 1.28 GPF for solids, against 1.1/1.6 GPF on three other picks here. That's a meaningful gap on every full flush, and it's the only pick in this group under 1 GPF on the light setting. The listing claims a siphon jet flush with a MAP 1000g rating.

Listed dimensions are 27.5 x 24.5 x 14.1 in, which is the shallowest listed depth of the five at 24.5 in. Casta Diva describes a 16.25 in seat height, a soft-close hinge, and a quick-release button that lets the seat come off in one motion for cleaning behind the hinges. The listing also mentions a standard 12 in rough-in with side mounting holes and pre-installed fill and flush valves.

Two things hold it back. This listing publishes no weight and no warranty, which are the two figures I'd most want before scheduling a delivery and a plumber. It's also the second-slowest seller here, so there's less real-world track record behind it than the HOROW.

Pros:

• Lowest flush volumes in this set at 0.8/1.28 GPF
• Shallowest listed depth at 24.5 in
• Tool-free quick-release seat per the listing
• 16.25 in seat height published
• MAP 1000g flush rating claimed

Cons:

• No weight published on the listing
• No published warranty
• Rough-in stated only in a feature claim, not the specifications
• Second-slowest seller of the five

5. HRVEOCEI Gray One Piece Toilets for Bathrooms — Best budget pick

The cheapest of the five and the only one that isn't white, but it's also the largest and heaviest listed.

Best for: a grey fixture at the lowest cost in this set Skip it if: your bathroom is genuinely small

Colour and cost are the two reasons to look here. This is the cheapest of the six figures I compared and the only Light Gray pick, which matters if you're matching a grey vanity or a slate floor and don't want a white fixture breaking the scheme. HRVEOCEI describes an ADA-compliant 17 in seat height and a semi-elongated bowl, plus a soft-close seat and siphon jet flush the listing says clears in 3 seconds.

Here's my problem with calling it compact. The listed dimensions are 30.7 x 27.2 x 15.6 in, making it the largest on every listed axis in this group and 6.2 in longer than the Casta Diva on the longest side. Listed weight is 127.9 lb, which is 49.9 lb heavier than the DeerValley 10 in model. The listing describes it as a 12 inch rough in toilet, though that appears in a feature claim rather than the specifications.

The flush is described as a 360° wash with partial and full options, but no GPF figures are published, so you can't compare its water use against the other four. No warranty either. This is a colour-and-cost pick, not a small-bathroom pick.

Pros:

• Cheapest pick in this set
• Only non-white option here, in Light Gray
• 17 in seat height claimed, ADA-compliant per the listing
• Semi-elongated bowl with soft-close seat

Cons:

• Largest listed dimensions of the five at 30.7 x 27.2 x 15.6 in
• Heaviest listed weight at 127.9 lb
• No GPF figures published, so water use can't be compared
• No published warranty
• Slowest seller of the five

How much depth does a compact dual flush toilet actually save?

Less than you'd hope, and the spread across this set is the useful part. Listed depths here run from 24.5 in to 27.2 in, so the tightest and loosest picks differ by 2.7 in.

That 2.7 in decides real things. It's the difference between a door that clears the bowl and one that clips it. It's whether you can stand square in front of a facing vanity.

Ranked by listed depth, shallowest first:

• Casta Diva AR03: 24.5 in
• DeerValley DV-2F52531: 24.6 in
• HOROW T0338W: 26.6 in
• DeerValley DV-1F52812R: 27.2 in
• HRVEOCEI: 27.2 in

Width is the second axis and it moves independently. The DV-2F52531 is listed at 13 in wide, the HRVEOCEI at 15.6 in, a 2.6 in gap. In a bathroom where the bowl sits between a wall and a vanity leg, width is the constraint that bites, not depth.

Chalk your footprint on the floor before ordering. Tape the outline, open the door, and see what actually touches. Amazon listings for a best compact dual flush toilet quote dimensions in inconsistent orders, so treat the largest listed number as depth or height and verify against the product photos.

What does paying more get you here?

Not what you'd guess. More money in this set does not buy a lower flush volume or a shallower bowl.

Working up from the cheapest, here's what each step actually adds:

• The cheapest pick gets you a one-piece body, a soft-close seat, a claimed 17 in seat height and a grey finish. It does not get you published GPF figures, a warranty or a small footprint.
• The next step up buys DeerValley's specification sheet: 1.1/1.6 GPF stated, a skirted body, a 24.6 in depth and a 13 in width. Still no warranty.
• The middle buys the lowest flush volumes here at 0.8/1.28 GPF, a quick-release seat and a published 16.25 in seat height. No weight, no warranty.
• The two most expensive picks are the only two with a published warranty, at 1-Year and 1 Year. One of them is also the only 10 in rough-in option, and the other publishes the highest seat height at 17.3 in.

So the pattern is that premium money buys documentation and fit options, not water savings. The cheapest bowl in the set is the largest. The lowest-flow bowl sits in the middle of the price order. If your priority is water use, you'd overpay by reaching for the top of this range.

What the listings do not tell you

Three of these five listings publish no warranty at all. Two publish no weight. That's not a small omission when a fixture this heavy needs a delivery plan and a fallback if the porcelain arrives chipped.

What's missing across the set:

• No trap seal depth on any listing, which affects how often a rarely used bathroom develops sewer odour.
• No supply line included is mentioned anywhere, so budget for a braided connector.
• No flapper or fill valve part numbers, which is what you'd want in five years when the flush weakens.
• No MAP rating on four of five, with only the Casta Diva claiming a figure.
• No rough-in in the specifications for two picks, where it appears only inside a marketing bullet.

Every one of these five is listed by a single seller, which means no competing offers to compare and one shipping path if something goes wrong. That's normal for bulky porcelain and worth knowing.

One more practical point. A one-piece toilet has no tank-to-bowl gasket, which is the joint that leaks most often on two-piece models. That's a genuine structural advantage shared by all five picks and one of the better reasons to buy this style in the first place.

The verdict

If your rough-in measures 10 in, the DeerValley DV-1F52812R is your pick and there's no debate, because it's the only one in this set built for that spacing. It's also the lightest at 78 lb, the narrowest of the two DeerValleys at 15 in across, and it carries a published 1-Year warranty. If your rough-in measures 12 in, the HOROW T0338W is the better buy, because it publishes the highest seat height here at 17.3 in, lists a fully glazed 2 in trapway, includes a 1 Year warranty, and is the pick buyers here choose most often.

The cutoff is your tape measure at the flange bolts. Ten inches sends you to the DeerValley. Twelve inches sends you to the HOROW.

Two conditions flip that. If you want the lowest water use, the Casta Diva AR03 at 0.8/1.28 GPF undercuts every other flush figure in this group, and it's the shallowest at 24.5 in. If you need the narrowest body, the DeerValley DV-2F52531 at 13 in wide is the one that squeezes past a vanity leg. The HOROW's exact advantage over the DeerValley winner is that extra seat height, roughly an inch above the next-highest published figure.

FAQ

Is a compact dual flush toilet worth the extra cost?

A compact dual flush toilet is worth it when the footprint solves a real problem, not for the flush alone. The two most expensive picks here buy a published warranty and rough-in flexibility, while the lowest flush volumes at 0.8/1.28 GPF sit mid-range. If your bathroom has room to spare, spend the difference on seat height instead of footprint.

How do I find good value in this category?

Finding good value here means matching the specification you'll actually use. A published warranty appears on only two of these five listings, and a stated GPF figure on four. Pay for the rough-in that fits your flange and the seat height that suits your household. Paying more does not get you a shallower bowl in this set, so footprint is not a premium feature.

Does a 10 in rough-in toilet fit a 12 in flange?

A 10 in rough-in toilet will physically sit on a 12 in flange, but it leaves a visible 2 in gap behind the tank and looks unfinished. The reverse never works. A 12 in model on a 10 in flange hits the wall. The DeerValley DV-1F52812R is the 10 in option here, and the other four list 12 in.

DeerValley DV-1F52812R or HOROW T0338W?

Choose the DeerValley DV-1F52812R if your flange sits 10 in from the wall, since nothing else in this group fits that. Choose the HOROW T0338W on a 12 in rough-in, because it publishes a 17.3 in seat height against the DeerValley's standard height. The DeerValley is 21.2 lb lighter, which matters if you're carrying it up a staircase alone.

What mistake do buyers make with compact toilets?

The most common mistake with compact toilets is trusting the word compact instead of the numbers. Listed depths in this set run from 24.5 in to 27.2 in, and one pick labelled compact measures 30.7 in on its longest listed side. Read the dimensions, tape the outline on your floor, and check the door swing before ordering anything this heavy.

Start with the tape measure, not the shortlist. Walk into the bathroom, measure from the finished wall to the centre of the bolt caps, and note the clear width between the wall and whatever sits beside the bowl. Those two numbers eliminate most of this list before you compare a single feature. If they come back at 10 in, the DeerValley DV-1F52812R is the answer, and its 78 lb listed weight is the lightest here, which is worth something on the day you have to wrestle it into place alone.

Last updated: September 24, 2026. Product availability re-checked.

This page contains affiliate links. As an Amazon Associate we earn from qualifying purchases, at no extra cost to you.