Best smart toilets: buyer's guide

A smart toilet purchase starts with fit, water supply and power—not a feature checklist. Use this guide to narrow the options, then check the manufacturer's current installation drawing.

Start with the non-negotiables

Feature trade-offs

Automatic lids and dryers add convenience but also introduce powered components. Built-in tanks and pump systems can change flushing behavior; they do not remove the need to meet the bidet system’s water requirements.

Example specification comparison

Model	Dimensions (L × W × H)	Rough-in	Seat height	Electrical	Water pressure	Flush volume
T38	27 7/16 × 15 7/16 × 18 11/16 in	12 in	16 9/16 in	16 A / 120 V	11.6–108 psi	1.06 GPF
T38P	27.44 × 15.43 × 19.69 in	12 in	17.56 in	16 A / 120 V	11.6–108 psi	1.0 / 1.28 GPF
X70	28 3/16 × 15 15/16 × 17 15/16 in	12 in	17 in	16 A / 120 V	8.7–116 psi	1.0 / 1.28 GPF
T33	27 1/16 × 16 7/16 × 18 7/16 in	12 in	17.5 in	10 A / 120 V	13–108 psi	1.28 GPF
T16	25 9/16 × 15 15/16 × 19 13/16 in	12 in	16.6 in	10 A / 120 V	20.3–108 psi	1.28 GPF

Figures are manufacturer-listed, not independently measured. Verify the latest model manual and product variant before purchasing.

Before you buy

Confirm the current price, stock, shipping destination, return conditions, included accessories, installer requirements and warranty at checkout. Check current offers and the written terms before purchasing.

Rank the non-negotiables first

Before comparing convenience features, establish rough-in, available space, water supply, outlet location and seat-height preference. These determine whether a model can be installed and used comfortably.

Compare features in context

Heated seats, adjustable washing, dryers and automatic flushing can improve convenience, but each adds controls or components to maintain. Compare the features you will use, not the longest marketing list.

Evaluate the full purchase

Read the current manual, warranty and return terms. Include delivery, installation, electrical work and parts availability in the budget. Confirm current product details at the merchant before checkout.

Use a fit-first shortlist

For each candidate, record rough-in, length, width, seat height, supply pressure, electrical rating and outlet location. Eliminate models that cannot meet the room's fixed constraints. Only then compare wash controls, heating, flushing, cleaning access and appearance.

Read the installation and warranty documents

A feature list cannot tell you whether the product can be serviced easily in your area. Find the manual, warranty, return policy and replacement-part process for the precise model. If professional installation is required, obtain a quote before ordering rather than treating the fixture price as the total project cost.

Start with non-negotiable compatibility

Before considering heated seats or automatic lids, confirm drain rough-in, floor condition, room dimensions, supply pressure and flow, and electrical requirements. Eliminate any model that fails one of those checks.

Then compare the ownership proposition

Review controls, cleaning instructions, parts availability, warranty exclusions, delivery handling and installer familiarity. Treat current price and promotions as checkout facts rather than permanent specifications.