10 Best Dual Flush Toilets of 2026 for Small Bathrooms and Comfortable Seating

A dual flush toilet lets you choose a lower-volume flush for liquid waste and a fuller flush when you need it. But water use is only part of the decision: seat height, bowl shape, and bathroom fit matter every day.

These 10 options span compact and elongated designs, standard and chair-height seating, and one- and two-piece construction. Use the buying guide below to narrow the field before checking measurements and specifications.

Best 10 Dual Flush Toilets Picks for 2026

Best for Maximum Water Savings – Casta Diva CD-T006

Among dual flush toilets, the Casta Diva CD-T006 pairs low 1.0/1.28 GPF settings with a 17.5-inch chair-height seat. Its compact, skirted one-piece design suits buyers who want an easier-to-clean exterior without giving up an elongated bowl.

Best For: Buyers prioritizing low water use and a taller seat in a compact bathroom.

Pros:

• 1.0/1.28 GPF dual flush and a stated MaP 1000g flush rating.
• 17.5-inch seat height and elongated bowl.
• Quick-release, soft-close seat and smooth skirted exterior.
• Includes a wax seal and installation hardware for a standard 12-inch rough-in.

Cons:

• Requires a standard 12-inch rough-in.
• One-year limited customer service coverage.

This is the strongest fit here if the lower full-flush volume matters most. Check its 25.39-inch depth and rough-in before ordering.

Best for a Higher-Volume Full Flush – Casta Diva CD-T005

The Casta Diva CD-T005 is one of the dual flush toilets here with a 1.6 GPF full-flush option. It combines that setting with a stated MaP 1000g siphon flush rating, a 17-inch chair-height seat, and a skirted one-piece exterior.

Best For: Buyers who prefer a 1.6 GPF full-flush option and an elongated, chair-height bowl.

Pros:

• 1.1 GPF light flush and 1.6 GPF full flush.
• Stated MaP 1000g rating and fully glazed trapway.
• Soft-close, quick-release seat simplifies seat removal for cleaning.
• Includes a wax seal and mounting hardware for a 12-inch rough-in.

Cons:

• Uses more water on a full flush than the 1.28 GPF models in this roundup.
• At 27.17 inches deep, it needs more front-to-back space than several alternatives here.

Choose this model if the higher-volume full-flush setting appeals to you; measure your available floor space first.

Best Compact Round Bowl – BayRoll SH-S001

For shoppers comparing dual flush toilets for a tight layout, the BayRoll SH-S001 offers a compact round bowl, a 17-inch chair-height seat, and 0.9/1.28 GPF flush settings. Its one-piece skirted exterior and quick-release seat are also designed to make cleaning easier.

Best For: Small bathrooms where a round bowl and low-volume flush settings are priorities.

Pros:

• 0.9 GPF light flush and 1.28 GPF full flush.
• Compact footprint of approximately 25.6 by 14.8 inches.
• Stated MaP 1000g rating and 17-inch seat height.
• Soft-close, quick-release seat.

Cons:

• Round bowl may not suit buyers who want an elongated seat.
• Angle-valve clearance needs checking before purchase.
• Water supply pipe and floor flange are not included.

Its size and flush volumes are appealing, but verify both the 12-inch rough-in and the specified valve clearance before installation.

Best for Rough-In Options – HOROW T0338W

The HOROW T0338W brings an elongated bowl to the compact end of the dual flush toilets category. This 12-inch rough-in version has a 17.3-inch seat height and 1.1/1.6 GPF settings; HOROW also offers a separate 10-inch rough-in version for different layouts.

Best For: Buyers seeking a compact elongated toilet with a chair-height seat and a choice of rough-in versions.

Pros:

• 26.6-inch depth and 17.3-inch seat height.
• 1.1/1.6 GPF dual flush and fully glazed 2-inch trapway.
• Large side openings provide access for floor mounting.
• Includes a soft-close seat, floor bolts, and wax ring.

Cons:

• This listed unit is the 12-inch rough-in version; the 10-inch version must be selected separately.
• Its 1.6 GPF full flush uses more water than the 1.28 GPF models here.

It balances an elongated seat with relatively compact dimensions. Confirm the exact rough-in version before checkout.

Easy-Clean One-Piece – DeerValley Elongated Dual Flush Toilet

Among dual flush toilets, this DeerValley model is a practical choice if you want a streamlined one-piece design. Its elongated bowl, skirted exterior, and 1.1/1.6 GPF flush pair everyday comfort with simpler cleaning.

Best For: Bathrooms where an easy-to-clean exterior and standard-height seating are priorities.

Pros:

• Skirted, glazed ceramic exterior has fewer exposed areas to clean.
• Dual-flush options let you choose 1.1 or 1.6 GPF.
• 800g MaP rating; removable slow-close seat and installation accessories included.

Cons:

• Standard-height seating may not suit buyers seeking a taller chair-height toilet.
• Requires a 12-inch rough-in.

Choose this model for its one-piece look and cleaning convenience, but check your rough-in and preferred seat height before ordering.

Comfort-Height Pick – St. Tropez One-Piece Elongated Toilet

Among dual flush toilets, the St. Tropez is a practical choice if you want a comfort-height, elongated bowl. Its Dual Vortex system offers a 1.1 GPF light flush and a 1.6 GPF full flush, with a cyclonic rinsing action designed to scrub the bowl.

Best For: Buyers who want an elongated, comfort-height toilet with two flush volumes and a standard 12-inch rough-in.

Pros:

• Elongated bowl provides extra seating room.
• Dual Vortex rinsing pairs a 1.1 GPF light flush with a 1.6 GPF full flush.
• Non-porous, scratch-resistant ceramic is designed for routine use.
• Seat, wax ring, bolts, and other installation components are included.

Cons:

• At 27 inches deep, it needs more floor depth than the compact DeerValley models in this roundup.
• Its 109-pound weight may make handling during installation more difficult.

The St. Tropez prioritizes seating room and a higher seat over the smallest possible footprint. Check the 27-inch depth and 12-inch rough-in against your bathroom before ordering.

Small-Space Pick – DeerValley Compact Round Toilet

For tight bathrooms, this DeerValley model is one of the more compact dual flush toilets here. Its round bowl and approximately 24.6-inch depth save floor space, while the 1.1/1.6 GPF flush gives you a choice of water volume.

Best For: Small bathrooms that need a short, standard-height toilet with a 12-inch rough-in.

Pros:

• Compact round-bowl design measures approximately 24.6 inches deep.
• Fully skirted exterior removes hard-to-reach exterior crevices.
• Includes a soft-close seat and installation supplies, including a wax ring and bolts.
• Side-access panels provide access for plumbing installation.

Cons:

• Round bowl offers less seating room than an elongated bowl.
• Standard seat height may not suit shoppers specifically seeking a comfort-height model.
• Listed seating capacity is up to 250 pounds.

This is the space-first option: it trades elongated seating for a shorter footprint. Verify the dimensions and seating capacity fit your household before choosing it.

Compact Elongated Pick – DeerValley Symmetry One-Piece Toilet

The DeerValley Symmetry is worth considering if you want an elongated seat without moving to a larger toilet. Like the other dual flush toilets in this roundup, it offers 1.1 GPF and 1.6 GPF settings; its listed features also include a skirted exterior and a soft-closing, quick-release seat.

Best For: Buyers who want elongated seating in a relatively compact, standard-height one-piece toilet.

Pros:

• Elongated seat provides more seating room while retaining a compact design.
• Siphon dual flush offers 1.1 GPF light and 1.6 GPF full settings.
• Seamless, fully skirted trap design reduces exterior grooves to clean.
• Soft-closing, quick-release seat and installation parts are included.

Cons:

• Standard seat height is not the best match for shoppers seeking a taller toilet.
• The supplied dimensions differ between the feature bullets and product details, so confirm fit before purchase.

Symmetry balances an elongated seat with a smaller footprint. Because the listed measurements conflict, double-check its width and clearance requirements before ordering.

How We Picked These Dual Flush Toilets

We organized these 10 models around the differences most likely to affect a purchase: stated flush volumes, seat height, bowl shape, footprint, construction, and rough-in information. The lineup includes compact toilets for tighter rooms and taller seats for buyers who prefer an easier sit-to-stand position. Published specifications are a starting point, not a substitute for checking the current listing, installation manual, and your bathroom measurements.

Quick Comparison: Which Style Fits?

For limited floor space: Start with the compact DeerValley model or the HOROW HR-ST076WD, then compare their installed depths. The sleek modern round-bowl model is another option when an elongated bowl may project too far.

For a taller seat: Compare the two Casta Diva models, the HOROW T0338W, the HOROW two-piece model, and the St. Tropez. Their stated chair- or comfort-height designs may be easier for some adults to use.

For a standard-height preference: Look at the DeerValley compact model and compare the DeerValley Symmetry’s listed seat measurement. Do not rely on labels alone; measure from the finished floor to the top of the installed seat.

Key Buying Factors for Dual Flush Toilets

Flush Volumes and Performance

Check both gallons-per-flush (GPF) figures. Models in this group advertise combinations including 0.9/1.28 and 1.1/1.6 GPF. The lower number describes the reduced flush, while the higher number is for the full flush. Water savings depend on how often each button is used and whether one flush clears the bowl. A stated MaP score can provide another performance reference, but compare it alongside owner feedback and the manufacturer’s specifications.

Fit, Height, and Bowl Shape

Confirm the rough-in: the distance from the finished wall, not the baseboard, to the center of the floor drain bolts. Some listed models specify a 12-inch rough-in, but verify your chosen toilet individually. Measure the space from the wall to the front of the existing bowl, plus side clearances and door swing. Elongated bowls generally offer more seating room; round or compact designs can preserve walking space. A taller seat may help some users stand, while a lower seat may suit others better.

Construction and Installation

One-piece designs avoid the external tank-to-bowl seam; two-piece toilets come in separate sections that can be easier to carry into place. Skirted sides can simplify exterior cleaning, but check whether their mounting hardware and water-supply clearance work in your bathroom. Confirm what comes in the box, especially the seat, wax ring, bolts, and supply line.

Who Should Buy Which Dual Flush Toilets?

Choose a compact or round-bowl option if front clearance is your constraint. Prioritize a verified chair-height measurement if sitting and standing comfort matters most. If you favor an elongated bowl, compare installed depth before choosing among the Casta Diva, HOROW, DeerValley, and St. Tropez options. For any finalist, confirm the rough-in, actual seat height, included parts, and return policy before ordering.