Choosing between the Brondell Swash SE400 and Swash CL1500 is one of the most common dilemmas for anyone upgrading to an electric bidet seat.
Both seats come from the same trusted brand, but they are aimed at very different buyers — and once you know the key differences, the right choice for you becomes obvious.
| Feature | Brondell Swash SE400 | Brondell Swash CL1500 |
|---|---|---|
| Image |  |
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| Dimensions (L x W x H) | 20.9″ x 18.5″ x 6.1″ | 20.8″ x 18.5″ x 5.7″ |
| Water Heater Type | Tank (limited warm water) | Hybrid (tank + on-demand) |
| Wash Modes | Rear, Feminine, Massage, Oscillation | Rear, Feminine, Strong, Massage, Oscillation |
| Nozzle Positions | Adjustable (standard) | 5 positions |
| Deodorizer | No | Yes (carbon filter) |
| Warm Air Dryer | Yes (3 levels) | Yes (5 levels) |
| Weight Capacity | 275 lbs | 330 lbs |
| Buy Now |  |
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1. Brondell Swash SE400 Electric Bidet Seat
The Brondell Swash SE400 is the brand’s budget-friendly entry into the electric bidet seat world, and it packs a surprisingly strong list of features for the price.
It sits in a mid-tier price range and is designed to give you the bidet basics — warm water, a heated seat, a dryer, and a stainless steel nozzle — all without spending a premium.
Features
- Dimensions: 20.9″ L x 18.5″ W x 6.1″ H
- Tank-type water heater (warm water lasts 30–60 seconds before a 3–5 minute reheat)
- Stainless steel self-cleaning nozzle with rear, feminine, massage, and oscillation modes
- Adjustable water temperature and pressure
- Ergonomic heated seat with 3 temperature settings
- Warm air dryer with 3 temperature levels
- LED nightlight (cool blue)
- Side-arm control panel with auto mode (one-touch wash + dry)
- Gentle-close seat and lid (sittable lid)
- Eco mode for energy savings
- Seat sensor — wash functions only activate when seated
- Weight capacity: 275 lbs
Pros
- Very affordable for a full-featured electric bidet seat
- Stainless steel nozzle is more hygienic than plastic alternatives
- One-touch auto mode makes it extremely easy to use
- Gentle-close lid is sturdy enough to sit on
- Quick DIY installation in under an hour
Cons
- Tank heater means warm water runs out after 30–60 seconds — not ideal for long washes
- No deodorizer function
- Lower weight capacity (275 lbs) compared to most competitors
- Slightly bulkier at 6.1″ high due to the water tank at the back
- No strong wash mode
The SE400 is a solid first electric bidet seat if you’re moving away from toilet paper and want warm water without spending a lot. It’s a great match for households who take quick, moderate-length washes. If you’re comparing it to other entry-level options, our guide to the best heated bidet toilet seats is worth a read before you decide.
Check its current price on Amazon
2. Brondell Swash CL1500 Advanced Bidet Seat
The Brondell Swash CL1500 is where Brondell’s lineup gets genuinely impressive — it’s a full-featured, advanced bidet seat with a hybrid water heater, carbon deodorizer, strong wash mode, and five adjustable nozzle positions.
It sits at a higher price point than the SE400 but delivers noticeably more in virtually every category, making it one of the better value propositions in the mid-to-upper range of the electric bidet seat market.
Features
- Dimensions: 20.8″ L x 18.5″ W x 5.7″ H
- Hybrid water heater (combines tank warmth with on-demand heating for extended warm water)
- Stainless steel self-cleaning nozzle with posterior, feminine, and strong wash modes
- 5 nozzle positions for precision wash placement
- Adjustable water temperature, pressure, massage, and oscillation
- Ergonomic heated seat with 4 temperature settings
- 5-level warm air dryer (helps eliminate toilet paper entirely)
- Built-in carbon deodorizer (neutralizes odors at the source)
- LED nightlight
- Side-arm control panel with gentle wash and auto mode
- Gentle-close seat and lid with quick-release for easy cleaning
- Eco mode
- Weight capacity: 330 lbs
Pros
- Hybrid heater provides longer-lasting warm water than a standard tank system
- Carbon deodorizer cleans the air naturally — no fragrances or sprays needed
- Strong wash mode delivers a more concentrated, powerful spray
- 5 nozzle positions give more precise and comfortable wash coverage
- Slimmer profile (5.7″ H) looks and feels more refined than the SE400
- Higher weight capacity at 330 lbs
- 5-level dryer offers more drying flexibility
Cons
- Higher upfront cost than the SE400
- Still a side-arm panel (no wireless remote option in this model)
- Hybrid heater is not fully tankless — very extended washes may see a brief temperature dip
If you’re looking for a bidet seat that feels genuinely premium without crossing into luxury pricing, the CL1500 delivers. The carbon deodorizer alone sets it apart from most seats in this range, and the hybrid heater means you’re far less likely to run out of warm water mid-wash. Check our bidet toilet seat comparison chart to see how the CL1500 stacks up across the wider market.
Check its current price on Amazon
Water Heating: The Biggest Difference Between These Two
This is the category that matters most for your daily comfort — and it’s where the SE400 and CL1500 diverge most sharply.
The SE400 uses a tank-type water heater.
A reservoir of water is kept warm and ready to use, which gives you an immediate warm spray — but once that stored water runs out (typically within 30–60 seconds), you face a 3–5 minute wait while the tank reheats.
For short, quick washes, this is perfectly fine.
But if you take longer washes, share the bathroom with multiple people, or use the front and rear wash consecutively, you will notice the temperature drop.
The CL1500 uses a hybrid heating system.
It combines a small warm water tank with on-demand ceramic heating, so when the stored water runs out, the heater kicks in to continue warming fresh water.
The result is longer-lasting warm water with less risk of a cold surprise mid-wash.
Winner: CL1500 — the hybrid heater is meaningfully better for everyday family use.
Wash Modes and Nozzle Performance
Both seats use a stainless steel self-cleaning nozzle, which is a welcome feature at any price point — stainless steel resists bacterial contamination better than plastic nozzles.
The SE400 gives you rear wash, feminine wash, massage (pulse), and oscillation modes.
That covers everything most users need day-to-day, and the adjustable water pressure and temperature settings let you fine-tune the experience.
The CL1500 adds a strong wash mode — a concentrated, high-pressure spray designed for a deeper clean — plus five adjustable nozzle positions instead of a standard adjustable range.
Those five positions mean more precise targeting for users of different body types, which is a real comfort upgrade over time.
If you’ve ever felt like a bidet’s nozzle just didn’t quite hit the right spot, more nozzle positions solve that. Check our best bidets for existing toilets guide to see how nozzle quality compares across top-rated seats.
Winner: CL1500 — more modes, more positions, more flexibility.
Deodorizer: A Feature the SE400 Simply Doesn’t Have
The CL1500 includes an automatic carbon deodorizer that engages as soon as you sit down.
It works by pulling air through a carbon-block filter, trapping odor molecules rather than masking them with a fragrance.
The result is a genuinely fresher bathroom, not just a perfumed one.
The SE400 has no deodorizer at all.
This is one of the clearest feature gaps between the two models — and if you share a bathroom with others, the deodorizer on the CL1500 is one of those features you’ll notice and appreciate every single day. For more on what separates bidet seat tiers, our guide to the best bidet brands covers how Brondell stacks up against TOTO, Alpha, and others.
Winner: CL1500 — the SE400 has no deodorizer.
Design and Build: Which Seat Looks Better?
The SE400 stands at 6.1 inches at its highest point at the rear.
That extra height is a direct result of the water tank built into the seat body — it’s a necessary trade-off for the tank heating system, but it does make the seat look and feel bulkier.
The CL1500, with its hybrid heater, manages a slimmer profile at 5.7 inches.
That 0.4-inch difference might not sound like much, but it means the CL1500 sits more flush with the toilet bowl, looks more refined, and feels slightly more comfortable to sit on due to a less pronounced rearward slope.
Both seats come in white and fit elongated or round toilets (sold separately by size).
Both have gentle-close lids and seat sensors that prevent the wash from activating when the seat is unoccupied.
The CL1500 also includes a quick-release mechanism that makes detaching and cleaning the seat easier.
Winner: CL1500 — slimmer, more refined profile.
Value for Money
The SE400 wins outright on affordability.
If your budget is tight and you want to step into the world of electric bidet seats without a large upfront investment, the SE400 gives you the core experience — warm water, heated seat, air dryer, stainless steel nozzle — at the lowest cost in Brondell’s electric lineup.
The CL1500 costs more, but it also delivers more: a better heater, a deodorizer, a strong wash mode, more nozzle positions, a slimmer design, and a higher weight capacity.
For most households, the CL1500 represents the better long-term investment — you’re spending more now but getting a noticeably better seat that you’ll use every single day.
If you’re still exploring the full range of what’s available, our best bidets for home use guide covers top picks across all price points.
Winner: SE400 on price. CL1500 on long-term value.
Verdict: Which One Should You Buy?
Both the SE400 and the CL1500 are solid electric bidet seats from a brand that has been in the game for over two decades.
But they serve different buyers.
Buy the Brondell Swash SE400 if…
- You’re buying your first electric bidet seat and want to minimize the upfront cost
- You take quick, moderate-length washes and won’t notice the tank heater’s limitations
- You live alone or share the bathroom with just one other person
- You just need the basics: warm water, heated seat, dryer, and a stainless steel nozzle
Buy the Brondell Swash CL1500 if…
- You want longer-lasting warm water without timing your washes
- A deodorizer matters to you — especially in a shared bathroom
- You want a stronger, more targeted spray option for a deeper clean
- You prefer a slimmer seat profile and a more refined bathroom aesthetic
- Your household has heavier users (weight capacity is 330 lbs vs 275 lbs on the SE400)
For most buyers, the CL1500 is the smarter long-term choice — but if budget is your primary concern, the SE400 is still a respectable entry-level electric seat that gets the job done.
FAQ
Do both the SE400 and CL1500 require electricity?
Yes, both are electric bidet seats that require a standard GFCI outlet within reach of the toilet. Neither will work without a nearby power source. If you don’t have an outlet near your toilet, check our bidet toilet vs bidet seat guide for alternatives that don’t require electricity.
Is the CL1500 the same model sold at Costco?
Yes — the Brondell Swash CL1500 is available through Costco as well as online retailers. The specs are the same across both channels, though pricing and promotions may vary depending on where you buy.
Which seat is better for heavier users?
The CL1500 supports up to 330 lbs, compared to the SE400’s 275 lb limit. For heavier users, the CL1500 is the safer and more appropriate choice. You can also find broader guidance in our best bidets for round toilets guide, which includes notes on weight capacity across various models.
Can I install either of these myself?
Yes. Both the SE400 and CL1500 are designed for DIY installation and come with all necessary hardware. Most users complete the installation in under an hour. You’ll need a GFCI outlet near the toilet and an existing water supply line — no plumber required. If you’re new to bidet installation, our handheld bidet vs bidet seat article covers what to expect from the setup process.
Conclusion
The Brondell SE400 and CL1500 share a brand, a stainless steel nozzle, and a side-arm panel — but beyond that, they serve very different needs.
The SE400 is a capable, budget-friendly entry into electric bidet seats that gives you warm water and comfort without a big spend.
The CL1500 is the upgrade — longer warm water, a built-in deodorizer, a strong wash mode, five nozzle positions, and a slimmer profile that makes a real difference in daily use.
If budget is no obstacle, go with the CL1500.
If you’re watching your spending and just want to try an electric bidet seat for the first time, the SE400 won’t disappoint.
Either way, you’re making a genuinely good upgrade to your bathroom — and one you’ll wonder how you lived without. For more help finding the right fit, explore our full bidet toilet seat comparison chart or browse our best bidet brands guide to compare Brondell against the rest of the market.