TOTO SN7631M#01 G5A Washlet Top Unit — Is It Worth It, and What Does It Do?

Yes — the TOTO SN7631M#01 G5A top unit is worth it if you want a premium, low-maintenance smart toilet experience with powerful cleansing, comfort and hygiene features in one integrated system. It combines a heated bidet seat, warm-water wash, air dryer, deodorizer and advanced self-cleaning technologies with a high-efficiency flush.

What is the TOTO SN7631M#01 G5A top unit?

The G5A is the top unit portion of TOTO’s integrated smart toilet system, designed to pair with its compatible TOTO bowl. It is what turns that bowl into a full smart toilet — built-in bidet functions, automatic lid and flush, and the comfort features below — while letting you replace only the top unit rather than the whole fixture.

If you are starting from scratch instead, the complete assemblies are in TOTO smart toilets. If you want bidet functions on the toilet you already own, a clip-on seat like the WASHLET S5 is the cheaper route.

What features do you get with the G5A top unit?

The G5A focuses on comfort and hygiene, making daily bathroom use feel cleaner and more convenient.

• Warm-water bidet wash with adjustable temperature, pressure and spray position.
• Multiple wash modes — rear, front, oscillating and pulsating, depending on settings.
• Heated seat with adjustable temperature for year-round comfort.
• Warm-air dryer to reduce reliance on toilet paper.
• Remote control that stores your preferred settings.

These are the same functions found across TOTO’s WASHLET bidet seats — the difference is that the G5A is built into the fixture rather than clipped onto an existing bowl. Our guide to the eight must-know WASHLET features explains what each one does in practice.

How does the TOTO G5A improve hygiene?

The most common question buyers ask is whether a washlet is genuinely more hygienic than a regular toilet. In practice yes, because it adds both touchless and self-cleaning functions:

• PREMIST — the bowl is misted before use so waste is less likely to stick.
• CEFIONTECT — TOTO’s ultra-smooth ceramic glaze, which reduces buildup.
• EWATER+ — a self-cleaning wand that rinses automatically before and after each use.
• Efficient, high-power flushing that helps keep the bowl clean between cleanings.

Together these reduce manual scrubbing and cut down on harsh chemical use — better for the bathroom and for the plumbing over time. They reduce cleaning rather than remove it: the pros and cons of TOTO toilets explains what owners still find themselves wiping.

Is it comfortable to use?

Comfort is the other reason people look this model up. The heated seat and warm-water wash are especially appreciated in Canadian winters and by older users. The aerated spray and adjustable settings suit a wide range of people, from everyday family use to sensitive skin or post-surgery care, and the soft-close lid keeps it quiet.

Does the G5A save water and energy?

Compared with an older toilet, a modern integrated system like the G5A is typically more water-efficient while delivering a stronger clean. Dual-flush operation at a low gallons-per-flush rating reduces water use over time, and you use less toilet paper thanks to the warm-water wash and dryer. Programmable energy-saving modes manage the seat and water heating when the bathroom is not in use.

Who is the SN7631M#01 G5A best for?

This top unit is an excellent choice if you:

• Want a premium smart toilet experience with integrated bidet functions.
• Value hygiene and would benefit from touchless, self-cleaning and deodorizing features.
• Are upgrading a primary or guest bathroom and want a modern, minimalist look.
• Prefer a Universal Height toilet for comfort and accessibility — see standard or universal height.

Like every electric WASHLET, it needs a grounded outlet within reach of the toilet. Confirm that before ordering.

If you already have, or plan to install, the compatible bowl, the SN7631M#01 G5A completes the system. Browse the full TOTO collection, or compare against TOTO one-piece toilets and Washlets & smart bidet seats before deciding.