TOTO Washlet S5 vs S7A: Which One Should You Buy in 2026?

If you have spent any time looking at TOTO bidet seats, you already know the S5 and the S7A are the two models that come up in almost every comparison. They share a slim profile, a wireless remote, and the signature spray performance that defines the brand. However, they are not the same seat, and the price gap between them is a real consideration.

At Majestic Flush, we help customers navigate these choices every week. The question we get most often is whether the S7A is actually worth the extra investment over the S5. The honest answer depends on how often the seat will be used, who will use it, and how much you care about total bowl hygiene. Below is the full breakdown written from a buyer's point of view.

What the S5 and S7A share

Before the differences, it helps to anchor on what is identical between the two seats. Both belong to the slim S series, both use a wireless remote system, and both deliver the high tier wash performance TOTO is known for.

You get the same instantaneous water heating system on both, which means warm water never runs out mid wash. You get five settings for water temperature, water pressure, and seat temperature. Both seats include a deodorizer, an automatic air pump, and a four user memory function that lets a household save personal preferences.

Both models also use the PREMIST function. Before every use, the inside of the bowl is misted with water so waste cannot stick to a dry ceramic surface. For a deeper look at this technology, read our guide on if a smart toilet is more hygienic.

The four real differences between the S5 and S7A

Automatic Lid and Auto Flush

The "A" in S7A stands for automatic features. Only the TOTO S7A offers the motion detected lid that opens as you approach and closes when you leave. The S7A can also be equipped with an auto flush kit if you have a compatible TOTO toilet. The S5 requires you to open the lid and flush the toilet manually every time.

Design and Profile Height

Both seats are considered slim, but the S7A is the sleekest in the lineup.

• TOTO S7A Profile: It stands at just 4.06 inches tall. It uses a skin sensor to detect users, making the experience seamless and responsive.

• TOTO S5 Profile: It stands at 5.5 inches tall. It uses a weight based sensor in the hinge that makes a slight clicking noise when you sit down. Because it is taller in the back, the S5 offers slightly less sitting room than the S7A.

Nozzle and Remote Refinement

The S7A uses a telescoping nozzle that is fully enclosed when not in use, protecting it from debris. The S5 uses a one piece nozzle that remains more exposed. Furthermore, the S7A remote features a premium gloss finish with raised chrome buttons and two infrared transmitters for a more reliable signal. The S5 remote is a simpler matte design with a single transmitter.

Other Differences
Night Light: Night light is inside the bowl for S5, while S7A has a night light inside the bowl and on the side of the seat.

Wash mode: Wide Soft Spray Function is available for the S7A, giving wider coverage.

Feature Comparison Table

Who should buy the TOTO Washlet S5

The S5 is the right seat if you have a small household or a guest bathroom. It delivers the core wash quality and instantaneous warm water at a more accessible price point. It is an enormous upgrade from a basic bidet setup.

Who should buy the TOTO Washlet S7A

The S7A is the right seat for buyers who want a truly hands free experience. If the automated lid, the ultra slim profile, and the extra bowl sanitation matter to you, the S7A is worth the investment. It is the gold standard for those who want the most advanced seat TOTO makes.

Real installation notes from our customers

Both seats require a dedicated 120V, 15amps GFCI outlet within 4 feet the toilet and a cold water supply. For full electrical and plumbing detail, see our smart toilet installation requirements guide. If you are unsure about your toilet dimensions, visit our toilet seat sizes and compatibility guide.

Our verdict

For a quiet household that doesn't mind manual operation, the S5 is an excellent value. However, for a busy bathroom or a tech focused buyer, the S7A earns its flagship title through its superior design and automation.

To view more specifics of each products please click our product link below: 
TOTO S5 Elongated Bidet Seat
TOTO S7A Elongated Bidet Seat