Best Touchless Toilets of 2026: Motion Sensor Flush

The TOTO UltraMax II earns its top ranking through a combination that no other single-unit touchless toilet matches: a published MaP score of 1,000 grams, a 1.28 GPF cyclone siphon flush, EPA WaterSense certification, and full compatibility with TOTO's WASHLET+ seat-activated sensor flush system that replaces manual flushing entirely.

The UltraMax II's double cyclone flush uses two nozzles to generate a centrifugal water flow that coats the entire bowl rather than relying on rim holes that can accumulate mineral deposits. In aggregated owner reviews, users consistently report that the bowl stays visibly cleaner longer than rimmed alternatives, reducing the need for abrasive cleaning products.

The WASHLET+ integration is the critical touchless mechanism here. The seat contains infrared sensors that detect when a user sits and then stands, automatically triggering the flush without any hand motion required. This is a more complete touchless experience than hand-wave sensors because it activates without any deliberate gesture -- the toilet behaves exactly like a commercial auto-flush unit.

Kohler's retrofit approach allows buyers to add sensor-activated flushing to an existing Kohler Highline -- one of the most widely installed residential toilets -- without replacing the full fixture, making this the most cost-effective path to a touchless bathroom.

The Kohler Touchless Flush Kit replaces the standard flapper and handle mechanism with a solenoid-controlled valve activated by an infrared sensor in a dome module that sits on top of the tank lid. The kit includes the flush tower, sensor unit, battery compartment, and connecting hardware. Installation requires no plumbing skills and no water shutoff.

In owner reviews, the most cited advantage is the preserved manual backup -- if the battery runs low, the trip lever still functions. This redundancy is meaningful in households with elderly members or children who may not notice a low-battery indicator. The 800-gram MaP score handles normal solid waste reliably; only households with documented heavy-waste flushing needs would find the performance gap from 1,000-gram systems noticeable.

The TOTO Aquia IV brings TOTO's renowned flush reliability to a dual-flush format -- 0.9 GPF for liquid waste and 1.28 GPF for solid waste -- and is designed to pair with WASHLET+ seats that add sensor-activated auto-flush, making it the most water-efficient touchless-capable toilet in this comparison.

In terms of water arithmetic, a household of four using the Aquia IV's 0.9 GPF partial flush for roughly half of daily flushes saves approximately 2,500 to 3,000 gallons annually compared to a 1.28 GPF single-flush toilet at the same usage rate. That figure grows significantly for larger families. The EPA WaterSense label confirms both flush volumes independently meet efficiency standards.

The WASHLET+ seat interface activates the full 1.28 GPF flush by default when the auto-flush trigger fires. Users who want the partial flush to activate for liquid waste cycles can configure this in the WASHLET+ settings, though owner reviews note that the automatic flush selection logic is simpler on TOTO's higher-end Neorest line.

The American Standard VorMax Plus earns a 1,000-gram MaP score through its EverClean surface and VorMax jet flush technology that creates a full-bowl vortex, and its standard 3-inch flush valve is compatible with aftermarket touchless retrofit kits from multiple manufacturers.

The VorMax flush mechanism uses a single jet positioned at the rim to create a spiraling water movement that coats the entire bowl surface in one pass. Published MaP testing confirms consistent 1,000-gram removal across multiple test runs at standard residential water pressure (25 PSI). This makes it one of the strongest non-pressure-assist, EPA WaterSense-certified toilets available. See our best powerful flush toilets guide for additional high-performance options.

To add touchless operation, compatible 3-inch solenoid retrofit kits from third-party suppliers work with this model's flush valve. Owner reviews confirm compatibility with the Kohler Touchless kit on this toilet's valve size, though American Standard does not officially endorse any specific retrofit kit. Verify the solenoid valve bore matches the 3-inch tower before purchasing.

The Swiss Madison St. Tropez Smart Toilet integrates a seat proximity sensor for automatic flushing alongside a heated seat, bidet function, and tankless design in one unit, offering the full smart toilet experience at a significantly lower price point than Japanese-brand equivalents.

The St. Tropez Smart Toilet's tankless design draws water directly from the supply line during the flush cycle, which explains its compact footprint and contemporary aesthetics. The auto-flush sensor detects the user leaving the seat and triggers a timed flush sequence. Aggregated owner reviews rate the flush sensor reliability highly in the first year of ownership.

The primary caution is flush power. Swiss Madison does not publish an independent MaP score, and owner feedback suggests performance is adequate for liquid and moderate solid waste but occasional double-flushing is reported for bulkier loads. Buyers for whom flush performance is the top priority should weight the TOTO options above more heavily. For a detailed comparison of the brand's broader lineup, see our best Swiss Madison toilets guide.

The TOTO Drake II is one of the most reliable two-piece gravity-flush toilets available, with a published MaP score of 1,000 grams and EPA WaterSense certification at 1.28 GPF, and its WASHLET+ compatibility makes it a strong choice for adding sensor auto-flush to a classic, low-maintenance platform.

The Drake II occupies a unique position as one of the most proven toilet platforms available -- it has accumulated extensive real-world reliability data across commercial and residential installations. Plumbers frequently cite it as the two-piece toilet they most often recommend for repair simplicity and parts availability. That parts ecosystem is valuable because touchless seat components occasionally need servicing, and having a straightforward toilet base reduces the risk of a sensor seat failure cascading into a full toilet replacement.

For guest bathrooms where the touchless feature serves a hygiene display function as much as a practical one, the Drake II presents the combination of reliable flushing and a credible TOTO brand signal that matters when guests notice a WASHLET+ seat. For comparison with the original Drake model, see our TOTO Drake series guide.

The Gerber Viper is a straightforward siphon-jet two-piece toilet with a published MaP score of 800 grams and a 3-inch flush valve that accepts universal touchless retrofit kits, offering a practical entry into hands-free flushing at the lowest total system cost in this roundup.

Gerber toilets occupy a professional contractor niche -- plumbers install them frequently in tract housing and commercial-adjacent residential builds because they perform reliably at their rated MaP level without the premium price of TOTO or Kohler. The Viper's 800-gram MaP score means it comfortably handles standard solid waste and does not produce the chronic clogging problems associated with older 1.6 GPF-to-1.28 GPF conversion units that achieved water savings at the expense of performance.

To complete the touchless setup, buyers add a compatible 3-inch solenoid retrofit kit. The Kohler Touchless Flush Kit works with this valve size, as does the FLUIDMASTER 8100P8 PerforMAX retrofit, which is specifically designed for universal 3-inch installations and includes its own adjustable solenoid tower. See our best Gerber toilets guide for the full brand lineup.

The Kohler Cimarron combines a clean skirted-adjacent elongated profile, 800-gram MaP flush performance at 1.28 GPF, and full compatibility with Kohler's own touchless flush retrofit kit, producing the best-looking touchless toilet setup in this guide when aesthetics are weighted alongside hygiene performance.

Kohler's Class Five flush uses a canister valve rather than a traditional flapper, which opens fully in one-quarter the time of a flapper for a stronger initial surge. This translates to a brisk, decisive flush that empties the bowl completely in most installations. The canister design is also the mechanism that makes the Kohler Touchless kit's solenoid compatibility straightforward on Cimarron models -- Kohler engineers the two systems to work together.

Owner reviews consistently praise the Cimarron's clean lines, noting it photographs well and suits contemporary bathroom remodels without the bulk of some two-piece alternatives. The one maintenance caveat: the canister valve is more proprietary than a standard 3-inch flapper, meaning replacement parts should be sourced from Kohler-authorized suppliers rather than generic plumbing hardware stores. Our best Kohler toilets guide covers the full current lineup.