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One Piece Dual Flush Toilets

All toilets

48 one piece dual flush toilets from DeerValley, Jastoeny, Swiss Madison and more. Most cost $219 to $1,425, and half cost less than $300.

One-piece toilets whose title also says dual flush. The listing says the gallons for each button.

We do not pick by hand: a toilet is here because its listed specs pass the checks.

Top brands: Jastoeny (11)DeerValley (7)Kohler (5)

Kohler

One-piece, Elongated, Dual flush

+One-piece design has no gap between tank and bowl
+Built-in bidet for washing without toilet paper
+Dual flush offers a reduced-water option
$2,499.97
as of 11/03/2026 23:47 PST - Details
Kohler

One-piece, Elongated, Dual flush

+Built-in bidet function
+Dual flush offers two flush volumes
+Smart toilet with electronic features
$3,229.98
as of 11/03/2026 23:47 PST - Details
Kohler

One-piece, Elongated, Dual flush

+Built-in smart bidet functionality
+One-piece design with no gap between tank and bowl
+Dual-flush system offers two flush volumes
$5,999.96
as of 11/03/2026 23:47 PST - Details
Kohler

One-piece, Elongated, Dual flush

+Dual flush gives a choice of flush volumes
+Compact footprint suits smaller bathrooms
+One-piece design has no seam between tank and bowl
$1,425.99
as of 11/03/2026 23:47 PST - Details
Loniko

One-piece, Elongated, Dual flush, 1.2 to 1.4 GPF

+One-piece design has no gap between tank and bowl
+Built-in bidet for washing without toilet paper
+Dual flush offers a reduced-water option
−Tankless design depends on electricity to flush
$399.98-27%List: $549.99
as of 11/04/2026 00:02 PST - Details
Loniko

One-piece, Elongated, Dual flush

+Elongated bowl offers more seating length
+Dual flush offers two flush volumes
+One-piece design with no seam between tank and bowl
−Requires a power outlet for smart functions
$379.99-24%List: $499.99
as of 11/04/2026 03:40 PST - Details
Hrveocei

One-piece, Elongated, Dual flush, Chair height

+Dual flush option lets users choose a lower water volume
+One-piece design with no separate tank to clean
+Elongated bowl provides more seating room
−Soft closing seat is the only listed seat feature
$136.82
as of 11/03/2026 23:31 PST - Details
Jastoeny

One-piece, Elongated, Dual flush, 12 in

+12 inch rough-in suits standard-depth installations
+Dual flush offers a choice between two water volumes
+One-piece design has no seam between tank and bowl
$289.99
as of 11/03/2026 23:39 PST - Details
Bolina

One-piece, Elongated, Dual flush, 1.2 to 1.4 GPF

+1.2 to 1.4 GPF: the lowest gallons per flush of the 53 here
$187.47-22%Was: $239.20
as of 11/04/2026 22:04 PST - Details
DeerValley

One-piece, Elongated, Dual flush, 1.2 to 1.4 GPF

+Elongated bowl for added seating comfort
+Chair height seat is easier to sit down and stand up from
+Dual flush offers a reduced-volume option
$215.00-17%List: $258.00
as of 11/04/2026 22:30 PST - Details
Canest

One-piece, Elongated, Dual flush, 1.2 to 1.4 GPF

+Dual flush offers a lower-water option for liquid waste
+One-piece design has no seam between tank and bowl
+Chair height ADA-style bowl
$259.99-13%List: $299.99
as of 11/04/2026 22:12 PST - Details
DeerValley

One-piece, Elongated, Dual flush, 1.5 to 1.6 GPF

+Elongated bowl for added seating comfort
+Dual flush offers a reduced-volume option
+Standard seat height for everyday use
$215.27-10%Was: $239.19
as of 11/04/2026 22:30 PST - Details
Horow

One-piece, Elongated, Dual flush, 1.5 to 1.6 GPF

+Dual flush option lets users choose a lower water volume
+ADA chair height of 17.3 inches eases sitting and standing
+Elongated bowl provides more seating room
−Flush volume of 1.5 to 1.6 GPF is typical, not low
$249.00-7%List: $269.00
as of 11/03/2026 23:26 PST - Details
Swiss Madison

One-piece, Elongated, Dual flush, 1.5 to 1.6 GPF

+Dual flush offers 1.1 and 1.6 gallon options
+One-piece design has no seam between tank and bowl
+Elongated bowl for more seating room
−Flush range runs 1.5 to 1.6 GPF in specifications
$303.81-5%Was: $319.80
as of 11/04/2026 22:16 PST - Details
Casta Diva

One-piece, Elongated, Dual flush, 1.5 to 1.6 GPF

+Elongated bowl for added seating room
+Chair height seat for easier sitting and standing
+Dual flush option offers two flush volumes
−Uses 1.5 to 1.6 GPF, more water per flush than some models
$259.00
as of 11/04/2026 22:15 PST - Details
Casta Diva

One-piece, Elongated, Dual flush, 1.2 to 1.4 GPF

+Elongated bowl for added seating room
+Chair height seat for easier sitting and standing
+Dual flush option offers two flush volumes
−Flush volume ranges 1.2 to 1.4 GPF
$289.99
as of 11/04/2026 22:15 PST - Details
TOTO

One-piece, Elongated, Dual flush, 1.2 to 1.4 GPF

+Dual flush offers 1.28 and 0.9 GPF settings
+Elongated bowl for added seating space
+One-piece design has no seam between tank and bowl
−Uses 1.2 to 1.4 GPF on the full flush
No price recorded yet.
Casta Diva

One-piece, Elongated, Dual flush, 1.2 to 1.4 GPF

+Elongated bowl for added seating room
+ADA comfort height seat for easier sitting and standing
+Dual flush option offers two flush volumes
−Flush volume ranges 1.2 to 1.4 GPF
$229.99
as of 11/04/2026 22:15 PST - Details
Jastoeny

One-piece, Elongated, Dual flush, 1.2 to 1.4 GPF

+Dual flush system with 1.2 to 1.4 GPF
+One-piece design with no gap between tank and bowl
+12 in. rough-in for standard placement
−Not a compact footprint
$256.99
as of 11/03/2026 23:39 PST - Details
Jastoeny

One-piece, Elongated, Dual flush, 1.5 to 1.6 GPF

+Dual flush system with 1.5 to 1.6 GPF
+One-piece design with no gap between tank and bowl
+Compact footprint for smaller bathrooms
−Chair height seat rather than standard height
$309.99
as of 11/03/2026 23:39 PST - Details
Jastoeny

One-piece, Elongated, Dual flush, 1.2 to 1.4 GPF

+Dual flush system with 1.2 to 1.4 GPF
+One-piece design with no gap between tank and bowl
+12 in. rough-in for standard placement
−Not a compact footprint
$289.99
as of 11/03/2026 23:39 PST - Details
Jastoeny

One-piece, Elongated, Dual flush, 1.5 to 1.6 GPF

+One-piece design with no seam between tank and bowl
+Dual flush offers two flush volumes
+Elongated bowl offers a longer seat area
−Uses 1.5 to 1.6 gallons per flush on the full flush
$299.99
as of 11/03/2026 23:39 PST - Details
Jastoeny

One-piece, Elongated, Dual flush, 1.5 to 1.6 GPF

+Dual flush system with 1.5 to 1.6 GPF
+One-piece design with no gap between tank and bowl
+12 in. rough-in for standard placement
−Not a compact footprint
$228.99
as of 11/03/2026 23:39 PST - Details
Jastoeny

One-piece, Elongated, Dual flush, 1.5 to 1.6 GPF

+Dual flush system with 1.5 to 1.6 GPF
+One-piece design with no gap between tank and bowl
+12 in. rough-in for standard placement
−Not a compact footprint
$249.99
as of 11/03/2026 23:39 PST - Details
WinZo

One-piece, Elongated, Dual flush, Chair height

+Macerating system for basements below the sewer line
+Dual flush for water-saving options
+One-piece elongated bowl
−Requires electrical power to run the macerator
$699.99
as of 11/04/2026 08:35 PST - Details
Signature Hardware

One-piece, Elongated, Dual flush, 1.2 to 1.4 GPF

+Wall mounted design frees floor space and eases cleaning underneath
+One-piece construction has no seam between tank and bowl
+Dual flush offers a lower-water option for liquid waste
−Requires a wall-hung installation setup
−Bowl only, tank and mounting frame not included
No price recorded yet.

Compare specs

toiletPiecesBowl shapeFlushGallons per flushRough-inSpec scorePrice
One-pieceElongatedDual flushn/a$2,499.97
as of 11/03/2026 23:47 PST - Details
One-pieceElongatedDual flushn/a$3,229.98
as of 11/03/2026 23:47 PST - Details
One-pieceElongatedDual flushn/a$5,999.96
as of 11/03/2026 23:47 PST - Details
One-pieceElongatedDual flushn/a$1,425.99
as of 11/03/2026 23:47 PST - Details
One-pieceElongatedDual flushn/a$8,399.96
as of 11/03/2026 23:47 PST - Details
One-pieceElongatedDual flush1.2 to 1.4 GPFn/a$399.98
as of 11/04/2026 00:02 PST - Details
One-pieceElongatedDual flushn/a$379.99
as of 11/04/2026 03:40 PST - Details
One-pieceElongatedDual flush1.5 to 1.6 GPF12 inn/a$219.00
as of 11/03/2026 23:26 PST - Details
One-pieceElongatedDual flush12 inn/a$136.82
as of 11/03/2026 23:31 PST - Details
One-pieceElongatedDual flush12 inn/a$289.99
as of 11/03/2026 23:39 PST - Details

Before you buy

Spec scores, pros and cons, and prices are explained in the How it works section of the About page.