Best smart toilets for small bathrooms

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

Small-room measurements

Record the door swing, vanity clearance, front clearance and lid-opening space. A shorter bowl does not guarantee a suitable installation. For context, HOROW lists the T16 at 25 9/16 inches long and the X70 at 28 3/16 inches; verify each model’s complete drawing.

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.

Start with the available footprint

Measure front and side clearances, door swing and the wall-to-flange distance. A short toilet can still be unsuitable if its lid, remote or power cord interferes with a vanity.

Compare full dimensions

Use the manufacturer drawing for length, width, height and required service clearance. Check whether the water shutoff and electrical outlet remain accessible after installation.

Choose the least disruptive fit

A compact conventional toilet plus a compatible bidet seat may suit some rooms better than an integrated unit. Compare both approaches if the existing toilet's placement is already workable.

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.

Shortlist by actual projection

A few inches of front-to-back length can determine whether a bathroom door opens fully. Compare installed projection from the finished wall, width at the widest point and the lid’s opening envelope, not the product’s marketing category.

Check service access

A compact integrated toilet can still require room to reach a shutoff valve, power connection or removable side panel. Make sure the fixture can be maintained after nearby cabinetry is installed.