TOTO Washlet C5 Review: Reliable Mid-Range Bidet Seat
Our TOTO Washlet C5 review covers PREMIST, eWATER+, heated seat, warm air dryer, specs, and who this mid-range electric bidet seat is best for.
TL;DR
The TOTO Washlet C5 is a mid-range electric bidet seat that delivers where it counts: warm water, a heated seat, a warm air dryer, and TOTO's proprietary PREMIST and eWATER+ hygiene technologies. At around $428, it sits below premium seats like the Brondell Swash 1400 but offers zero ongoing filter costs and the kind of engineering reliability TOTO is known for. It only fits elongated toilets and carries a shorter one-year warranty. But for buyers who want proven hygiene tech without paying $700 or more, the Washlet C5 is one of the best values in electric bidet seats.
Full Comparison
| # | Product | Best For | Rating | Price | |
|---|---|---|---|---|---|
| 1 | TOTO Washlet C5 Top Pick TOTO | Best Mid-Range Electric Bidet Seat | 4.7 | $$ | Check Price |
| 2 | Brondell Swash 1400 Brondell | Best Overall Electric Seat | 4.8 | $$$ | Check Price |
Affiliate Disclosure: BidetScout earns commissions from qualifying purchases through affiliate links on this page. This does not influence our rankings or reviews. All opinions are our own. Learn more
TOTO has been making bidet seats longer than just about anyone. The Japanese company pioneered the Washlet line in 1980, and four decades later, their engineering still sets the standard for reliability and hygiene. The Washlet C5 is where that engineering meets a price point most people can actually justify.
At around $428, the C5 sits in the sweet spot between basic bidet attachments and premium $700 or more electric seats. It does not try to be everything. Instead, it focuses on the features that matter most: clean water delivery, a clean bowl, and a clean wand. Here is what we found when we dug into the specs.
What You Get for $428
The Washlet C5 (model SW3084) is a full-featured electric bidet seat with warm water rear and front cleansing, a heated seat, a warm air dryer, and a built-in deodorizer. It runs on AC 120V and draws 403W during normal operation.
The wireless remote control has an illuminated touchpad with two programmable user memory presets. You can save your preferred water temperature, seat temperature, spray pressure, and wand position for one-touch operation. The remote mounts to a wall bracket or sits on any flat surface.
At 15.1 x 20.9 x 5.75 inches, the C5 replaces your existing elongated toilet seat. The soft-close lid is a small detail that makes a real difference in daily use, especially if you share a bathroom with someone who drops the lid.
PREMIST and eWATER+: The Features That Set TOTO Apart
Two proprietary technologies separate the Washlet C5 from every other seat in its price range. Neither is flashy, but both solve real problems.
PREMIST
Every time you sit down, a sensor triggers a fine mist that wets the inside of the toilet bowl. This sounds trivial, but it makes a measurable difference. Waste slides off a wet ceramic surface far more easily than a dry one, which means cleaner flushes, less residue, and less scrubbing. You will notice the difference within the first week.
PREMIST uses a tiny amount of water and adds no time to your routine. It activates automatically and requires no input from you.
eWATER+
After each use, the spray wand retracts and rinses itself with electrolyzed water. This is regular tap water that has been given a mild electrical charge, turning it into a sanitizing solution that breaks down bacteria on contact. The wand cleans both inside and out, every single time.
Other bidet seats have "self-cleaning" wands that simply rinse with tap water. eWATER+ goes further by creating an actively antibacterial rinse. No chemicals, no filters, no replacement parts. It just works.
Wash Performance
The C5 offers three spray modes: rear cleansing, rear soft cleansing, and front cleansing. Each mode delivers warm water at flow rates between 0.07 and 0.11 gallons per minute, with water temperature adjustable across five settings from 95 to 104 degrees Fahrenheit.
The wand position is adjustable, and both oscillating and pulsating spray options are available. Oscillating moves the wand back and forth for broader coverage. Pulsating alternates water pressure for a massage-like effect. These are not gimmicks; oscillating in particular makes a noticeable difference in cleaning effectiveness.
Water heating is instantaneous, meaning the seat heats water on demand rather than storing it in a tank. The advantage is that you never run out of warm water during a single session. The tradeoff compared to hybrid systems like the Brondell Swash 1400 is that the peak temperature may be slightly lower during extended use. For most people, this is not a meaningful issue.
Comfort Features
Heated Seat
Five temperature levels from 82 to 97 degrees Fahrenheit. If you have ever sat on a cold toilet seat in January, you understand why this feature alone justifies the upgrade from a basic attachment. The seat sensor detects when you sit down and activates the bidet functions automatically.
Warm Air Dryer
Five temperature settings from 95 to 140 degrees Fahrenheit with an airflow volume of 8.83 cubic feet per minute. The dryer reduces or eliminates toilet paper use, though it takes 30 to 60 seconds for a full dry. Most users find that a quick pat with a single sheet of toilet paper plus the dryer is the most efficient approach.
Deodorizer
A built-in air deodorizer neutralizes bathroom odors at the source. Unlike air fresheners that mask smells with fragrance, the C5's deodorizer uses a catalytic filter to break down odor molecules. There is no replacement filter to buy, which is a genuine cost advantage over seats that require periodic deodorizer cartridge replacements.
Installation
The Washlet C5 installs on any standard elongated toilet in about 20 to 30 minutes. You will need:
- A GFCI outlet within about 4 feet of the toilet (the power cord is 3.93 feet long)
- A standard water supply connection (the included T-valve taps into your existing supply line)
- Basic tools: an adjustable wrench and a screwdriver
Remove your existing toilet seat, mount the C5's base plate to the bolt holes, slide the seat onto the plate, connect the water supply via the T-valve, and plug in the power cord. No plumber required.
The most common additional expense is the GFCI outlet. If your bathroom does not have one near the toilet, expect to pay $150 to $300 for an electrician to install one. This applies to every electric bidet seat, not just the C5.
Water supply pressure must be between 7.25 PSI (dynamic) and 108.75 PSI (static). Standard residential water pressure falls well within this range.
For a complete walkthrough, see our bidet seat installation guide.
Specs at a Glance
| Spec | TOTO Washlet C5 |
|---|---|
| Model | SW3084#01 |
| Price | ~$428 |
| Type | Electric bidet seat |
| Fits | Elongated only |
| Dimensions | 15.1 x 20.9 x 5.75 in |
| Weight | ~10.8 lbs |
| Power | 403W (512W max) |
| Water Temp | 95–104°F (5 settings) |
| Seat Temp | 82–97°F (5 settings) |
| Dryer Temp | 95–140°F (5 settings) |
| Spray Modes | Rear, rear soft, front |
| Spray Options | Oscillating, pulsating |
| Remote | Wireless with illuminated touchpad |
| User Presets | 2 memory presets |
| Bowl Pre-Mist | PREMIST |
| Wand Cleaning | eWATER+ (electrolyzed water) |
| Deodorizer | Yes (no replacement filter) |
| Soft-Close Lid | Yes |
| Warranty | 1 year limited |
| Annual Filter Cost | $0 |
Who Should Buy the TOTO Washlet C5
It is best for:
- Buyers who want a reliable electric bidet seat from a trusted brand without paying $700 or more
- Anyone who prioritizes hygiene, specifically the PREMIST bowl pre-mist and eWATER+ wand sanitization
- People who want low ongoing costs with zero replacement filters and minimal maintenance
- Households where two people share a bathroom (the two-user memory presets on the wireless remote make switching seamless)
You should skip it if:
- You have a round toilet bowl (the C5 only fits elongated)
- You want endless warm water for extended use (consider the Brondell Swash 1400 with its hybrid heating system)
- A one-year warranty is a dealbreaker (some competitors offer two or three years)
- You want a nightlight (the C5 does not have one)
How It Compares
The Washlet C5 competes primarily with the Brondell Swash 1400, which costs about $270 more at $699.
| Feature | TOTO Washlet C5 | Brondell Swash 1400 |
|---|---|---|
| Price | ~$428 | ~$699 |
| Warm Water | Instant | Endless (hybrid) |
| Bowl Pre-Mist | PREMIST | No |
| Wand Cleaning | eWATER+ | Standard rinse |
| Remote | Wireless | Wireless |
| Heated Seat | 5 levels | 5 levels |
| Air Dryer | 5 levels | Yes |
| Deodorizer | Yes (no filter) | Yes ($25/yr filter) |
| Nightlight | No | Yes |
| Nozzle Material | Plastic | Stainless steel |
| Fits | Elongated only | Elongated or round |
| Annual Filter Cost | $0 | ~$25 |
The Swash 1400 wins on warm water duration, nozzle quality, and size compatibility. The C5 wins on hygiene technology, total cost of ownership, and price. If you value a clean bowl and wand above all else, the C5 is the better choice. If endless warm water and a nightlight matter more, the Swash 1400 justifies the premium.
For a full rundown of both options, see our best electric bidet seats guide.
Long-Term Costs
One of the C5's strongest selling points is that it costs almost nothing to maintain.
- Replacement filters: $0. No water filter, no deodorizer cartridge.
- Electricity: Roughly $3 to $5 per month depending on your rates and usage.
- Replacement parts: The wand and other components are available from TOTO if needed, but the seat is built to last years without intervention.
Over two years, the C5 costs about $428 plus roughly $72 to $120 in electricity. That is under $550 total. The Brondell Swash 1400, by comparison, runs about $699 plus $50 in filters plus similar electricity costs, putting it closer to $820 over the same period. The C5 saves roughly $270 over two years.
The Bottom Line
The TOTO Washlet C5 does not try to win on flash. There is no nightlight, no stainless-steel nozzle, and no endless warm water claim. What it offers instead is something quieter but arguably more valuable: genuine hygiene innovation backed by decades of engineering.
PREMIST keeps your bowl cleaner. eWATER+ keeps your wand sanitary. Zero replacement filters keep your ongoing costs at effectively nothing. And TOTO's reputation means the seat is built to work reliably for years.
At $428, it is the best mid-range electric bidet seat we have found. If you are stepping up from a basic bidet attachment and want something that prioritizes clean over clever, the Washlet C5 is the right choice.
Not sure an electric seat is the right move? Read our guide on how to choose a bidet or learn about the different types of bidets to figure out what fits your bathroom and budget.