Best Scandinavian Toilets (2026)
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Clean, low-profile silhouettes with real MaP-verified flush performance and efficient dual-flush water use, sized for a minimalist Nordic bathroom without sacrificing function.
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Roundup Review
Best Toilet for an Upstairs Bathroom (2026)
A quiet, powerful flush and a leak-proof seal are non-negotiable for second-story installations. We analyzed MaP scores, GPF ratings, trapway designs, and verified owner feedback to find the best toilet for an upstairs bathroom in 2026.
Why Trust Best Flushing Toilets
- Flushing power and MaP flush-test scores
- Water efficiency (GPF and EPA WaterSense)
- Aggregated owner reviews
- Clog resistance and trapway design
- Brand reliability and warranty
Research updated June 2026.
Quick Answer
The best toilet for an upstairs bathroom balances a powerful flush with quiet operation and a reliable wax-free seal to prevent leaks into the floor below. The TOTO Drake II leads for its 1000g MaP score, 1.28 GPF efficiency, and robust trapway, while the Kohler Highline offers a budget-friendly alternative with proven clog resistance.
| Model | MaP Score | GPF | Flush Type | Trapway | Height | Best For |
|---|---|---|---|---|---|---|
| TOTO Drake II | 1000g | 1.28 | G-Max | 2-1/8" | Comfort Height | Overall performance |
| Kohler Highline | 1000g | 1.28 | Class Five | 2" | Comfort Height | Budget value |
| American Standard Champion 4 | 1000g | 1.28 | PowerWash | 2-3/8" | Right Height | Clog resistance |
| Woodbridge T-0001 | 1000g | 1.28 | Dual flush | 2" | Comfort Height | Quiet flush |
| Gerber Viper | 800g | 1.28 | Gravity | 2" | Standard | Small bathrooms |
What makes a toilet safe for an upstairs bathroom?
A toilet for an upstairs bathroom must have a strong, quiet flush, a reliable seal to prevent leaks into the ceiling below, and a water-efficient design to avoid overloading the plumbing system. Models with a 1000g MaP score, 1.28 GPF or less, and a wax-free or double-seal option are preferred.
Installing a toilet on a second floor introduces risks that ground-floor bathrooms don't face. A leak from the wax ring or a weak flush that causes clogs can lead to water damage in the room below. The best toilet for an upstairs bathroom uses a wide trapway (2 inches or more) to clear waste efficiently, a quiet flush mechanism to avoid disturbing bedrooms, and a secure sealing system. Many homeowners now choose wax-free seals or reinforced wax rings for added protection.
Expert Take
For upstairs installations, the wax ring is the most common failure point. A wax-free seal like the Fluidmaster Better Than Wax or a jumbo wax ring with a plastic sleeve provides a more reliable barrier against leaks. Pair this with a toilet that has a 2-1/8 inch or larger trapway for consistent waste clearance.
Which toilet has the quietest flush for an upstairs bathroom?
The Woodbridge T-0001 and TOTO Aquia IV are among the quietest toilets for upstairs bathrooms, using dual-flush gravity systems that produce minimal noise. The Woodbridge T-0001 operates at under 50 decibels, making it ideal for bathrooms near bedrooms.
Noise is a major concern when the toilet is directly above a living room or bedroom. Gravity-fed toilets are generally quieter than pressure-assisted models. The Woodbridge T-0001 uses a dual-flush system with a soft-close seat and a slow-fill valve, keeping noise to a minimum. The TOTO Aquia IV also employs a quiet flush with its Tornado Flush system, which uses two nozzles to create a swirling action without the loud gush of traditional rim jets. Owner reviews on multiple retail sites confirm that these models are significantly quieter than standard gravity toilets.
Expert Take
If noise is your top priority, look for a toilet with a fully glazed trapway and a slow-close seat. The Woodbridge T-0001 and TOTO Aquia IV both feature these design elements. Avoid pressure-assist toilets for upstairs bathrooms, as they can produce a loud burst of air and water.
What is the best clog-resistant toilet for an upstairs bathroom?
The American Standard Champion 4 is the best clog-resistant toilet for an upstairs bathroom, with a 2-3/8 inch trapway and a 1000g MaP score. Its PowerWash rim and 3-inch flush valve prevent clogs even with heavy use.
Clogs on the second floor are more than an inconvenience; they can cause overflow and water damage. The American Standard Champion 4 is engineered specifically for clog resistance. Its trapway is the widest among standard residential toilets at 2-3/8 inches, and the 3-inch flush valve allows water to enter the bowl faster than a 2-inch valve. The result is a powerful, consistent flush that clears the bowl in one motion. The TOTO Drake II also offers excellent clog resistance with its 2-1/8 inch fully glazed trapway and G-Max flush system. Both models achieve a 1000g MaP score, meaning they can clear 1000 grams of waste in a single flush.
Expert Take
The trapway diameter is the single most important factor for clog resistance. A 2-3/8 inch trapway like the one in the Champion 4 is ideal, but a 2-1/8 inch fully glazed trapway in the Drake II is also highly effective. Never install a toilet with a trapway smaller than 2 inches in an upstairs bathroom.
Should I choose a one-piece or two-piece toilet for an upstairs bathroom?
A one-piece toilet is generally better for an upstairs bathroom because it has fewer seams where leaks can develop, and it is easier to clean. However, a two-piece toilet can be more affordable and easier to carry up stairs due to its lighter weight.
One-piece toilets have a seamless design that eliminates the joint between the tank and bowl, reducing the risk of leaks. They are also easier to clean and often have a more modern appearance. However, they are heavier, which can make carrying them up stairs challenging. Two-piece toilets are lighter and easier to maneuver, but the tank-to-bowl gasket can fail over time. For upstairs bathrooms, the trade-off is between leak risk and installation convenience. The TOTO UltraMax II is a popular one-piece option with a low profile, while the Kohler Cimarron is a reliable two-piece choice that is easier to transport.
Expert Take
If you are installing the toilet yourself and have a narrow staircase, a two-piece toilet like the Kohler Cimarron is easier to handle. If you are hiring a professional, a one-piece toilet like the TOTO UltraMax II offers superior leak resistance and a cleaner look.
Top Picks for the Best Toilet for an Upstairs Bathroom
1
TOTO Drake II CST454CEFG
The TOTO Drake II is the best overall toilet for an upstairs bathroom, offering a powerful, quiet flush and a robust trapway that prevents clogs.
Flush TypeG-Max gravity
GPF1.28
MaP Score1000g
Trapway2-1/8"
HeightComfort Height
WarrantyLifetime
Pros
- 1000g MaP score for reliable flush
- Fully glazed trapway prevents clogs
- Quiet operation
- WaterSense certified
Cons
- Higher price point
- Two-piece design may have tank gasket
The TOTO Drake II is a benchmark for residential toilets. Its G-Max flush system uses a 3-inch flush valve and a 2-1/8 inch fully glazed trapway to deliver a powerful, quiet flush every time. With a 1.28 GPF rating, it meets EPA WaterSense standards without sacrificing performance. Owner reviews consistently praise its ability to clear waste in one flush, even with heavy use. The Comfort Height bowl makes it accessible for all users, and the elongated shape adds comfort.
For upstairs bathrooms, the Drake II's reliable flush and robust construction minimize the risk of clogs and leaks. The fully glazed trapway ensures that waste slides through easily, and the gravity-fed system operates quietly. While it is a two-piece model, the tank-to-bowl gasket is durable and easy to replace if needed. This toilet is a top choice for homeowners who want a dependable, long-lasting solution.
Expert Take
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The Drake II's 2-1/8 inch trapway is a key feature for upstairs use. It is wide enough to handle large waste loads but not so wide that it loses siphonic action. Pair it with a wax-free seal for maximum leak protection.
Bottom Line: The TOTO Drake II is the best choice for an upstairs bathroom due to its powerful flush, clog resistance, and quiet operation.
2
Kohler Highline K-5409
The Kohler Highline offers excellent value with a 1000g MaP score and a quiet Class Five flush, making it a strong contender for upstairs bathrooms.
Flush TypeClass Five gravity
GPF1.28
MaP Score1000g
Trapway2"
HeightComfort Height
WarrantyLifetime
Pros
- Affordable price
- 1000g MaP score
- Quiet flush
- WaterSense certified
Cons
- 2" trapway is smaller than some
- Two-piece design
The Kohler Highline is a budget-friendly option that does not compromise on flushing power. Its Class Five flush system uses a larger flush valve and a direct-fed trapway to deliver a powerful, quiet flush. With a 1.28 GPF rating, it is efficient and eco-friendly. Owner reviews highlight its consistent performance and ease of installation. The Comfort Height bowl is standard, and the elongated shape provides added comfort.
For upstairs bathrooms, the Highline's quiet operation and reliable flush make it a solid choice. The 2-inch trapway is adequate for most household waste, though it is not as wide as the Champion 4 or Drake II. The two-piece design is lighter and easier to carry up stairs. Overall, the Kohler Highline is a great value for homeowners who want a dependable toilet without spending a premium.
Expert Take
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The Highline's Class Five flush is one of the quietest gravity systems available. For upstairs bathrooms near bedrooms, this is a significant advantage. Use a reinforced wax ring to ensure a leak-proof seal.
Bottom Line: The Kohler Highline is the best budget-friendly toilet for an upstairs bathroom, offering strong performance at a lower cost.
3
American Standard Champion 4
The American Standard Champion 4 is the best clog-resistant toilet for an upstairs bathroom, with the widest trapway in its class.
Flush TypePowerWash gravity
GPF1.28
MaP Score1000g
Trapway2-3/8"
HeightRight Height
WarrantyLifetime
Pros
- Largest trapway at 2-3/8"
- 1000g MaP score
- PowerWash rim cleans bowl
- EverClean surface resists stains
Cons
- Flush can be louder than others
- Two-piece design
The American Standard Champion 4 is designed to handle heavy waste loads without clogging. Its 2-3/8 inch trapway is the largest of any standard residential toilet, and the 3-inch flush valve ensures rapid water release. The PowerWash rim uses a series of jets to clean the bowl with each flush. Owner reviews consistently report that this toilet rarely clogs, even in large families. The Right Height bowl is ADA-compliant, and the EverClean surface inhibits the growth of bacteria.
For upstairs bathrooms, the Champion 4's clog resistance is a major advantage. A clog on the second floor can cause overflow and water damage, so a toilet that clears waste reliably is essential. The flush is slightly louder than the Drake II or Highline, but it is still quieter than pressure-assist models. The two-piece design is manageable for stair transport. This is the best choice for households with heavy use or large waste loads.
Expert Take
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The Champion 4's 2-3/8 inch trapway is unmatched for clog resistance. If you have children or guests who might flush inappropriate items, this toilet is your best defense. Always use a wax-free seal for upstairs installations.
Bottom Line: The American Standard Champion 4 is the top choice for clog resistance in an upstairs bathroom, thanks to its oversized trapway.
4
Woodbridge T-0001
The Woodbridge T-0001 is the quietest toilet for an upstairs bathroom, with a dual-flush system that operates at under 50 decibels.
Flush TypeDual flush gravity
GPF1.28 / 0.8
MaP Score1000g
Trapway2"
HeightComfort Height
WarrantyLifetime
Pros
- Very quiet flush
- Dual flush saves water
- Soft-close seat included
- One-piece design
Cons
- 2" trapway is smaller
- Some reports of flush handle issues
The Woodbridge T-0001 is a one-piece dual-flush toilet that prioritizes quiet operation. Its gravity-fed system uses a 3-inch flush valve and a fully glazed trapway to minimize noise. The dual-flush option allows you to use 0.8 GPF for liquid waste and 1.28 GPF for solid waste, saving water. Owner reviews praise its sleek design and quiet performance. The soft-close seat is a nice bonus.
For upstairs bathrooms, the T-0001's quiet flush is ideal for installations near bedrooms. The one-piece design reduces the risk of leaks from the tank-to-bowl gasket. However, the 2-inch trapway is smaller than the Champion 4 or Drake II, so it may clog more easily with heavy waste. It is a good choice for light to moderate use in a guest bathroom or powder room.
Expert Take
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The Woodbridge T-0001 is one of the quietest toilets on the market. For upstairs bathrooms where noise is a concern, this is an excellent option. Use the 1.28 GPF flush for solid waste to minimize clog risk.
Bottom Line: The Woodbridge T-0001 is the quietest toilet for an upstairs bathroom, perfect for noise-sensitive areas.
5
TOTO UltraMax II
The TOTO UltraMax II is a premium one-piece toilet with a powerful Tornado Flush and a sleek, low-profile design.
Flush TypeTornado Flush gravity
GPF1.28
MaP Score1000g
Trapway2-1/8"
HeightComfort Height
WarrantyLifetime
Pros
- One-piece design reduces leaks
- Tornado Flush is powerful and quiet
- Easy to clean
- WaterSense certified
Cons
- Heavy and difficult to carry upstairs
- Higher price
The TOTO UltraMax II is a one-piece toilet that combines style with performance. Its Tornado Flush system uses two nozzles to create a swirling action that cleans the bowl without the need for rim jets. This results in a powerful, quiet flush that is highly effective. The 2-1/8 inch fully glazed trapway ensures clog resistance. Owner reviews consistently rate it highly for flush power and ease of cleaning.
For upstairs bathrooms, the UltraMax II's one-piece design eliminates the tank-to-bowl gasket, reducing the risk of leaks. However, it is heavy, weighing around 90 pounds, which can make carrying it up stairs difficult. It is best suited for installations where a professional is handling the transport. The quiet flush and reliable performance make it a top-tier choice for second-story bathrooms.
Expert Take
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The UltraMax II's Tornado Flush is one of the most effective and quietest flush systems available. For an upstairs bathroom, the one-piece design is a significant advantage for leak prevention. Plan for two people to carry it up stairs.
Bottom Line: The TOTO UltraMax II is a premium one-piece toilet that offers excellent performance and leak resistance for upstairs bathrooms.
6
Gerber Viper 21-005
The Gerber Viper is a compact, affordable toilet that fits well in small upstairs bathrooms without sacrificing flush power.
Flush TypeGravity
GPF1.28
MaP Score800g
Trapway2"
HeightStandard
WarrantyLifetime
Pros
- Compact size for small spaces
- Affordable price
- Easy to install
- WaterSense certified
Cons
- 800g MaP score is lower
- Standard height may not suit all users
The Gerber Viper is a no-frills toilet that gets the job done. Its gravity-fed flush system uses a 2-inch trapway and a 3-inch flush valve to deliver adequate performance. With a 1.28 GPF rating, it is water-efficient. Owner reviews note that it is easy to install and reliable for everyday use. The standard height and round bowl make it a good fit for smaller bathrooms or powder rooms.
For upstairs bathrooms, the Viper's compact size is an advantage in tight spaces. It is lightweight and easy to carry up stairs. However, the 800g MaP score is lower than the other picks, so it may not handle heavy waste loads as well. It is best suited for a guest bathroom or half-bath where use is light. The standard height may be less comfortable for taller users.
Expert Take
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The Gerber Viper is a solid budget option for small upstairs bathrooms. Its 800g MaP score is adequate for light use, but for a master bathroom, consider a model with a 1000g score. Use a wax-free seal for added leak protection.
Bottom Line: The Gerber Viper is a budget-friendly, compact toilet for small upstairs bathrooms with light use.
7
Swiss Madison St. Tropez
The Swiss Madison St. Tropez is a stylish one-piece toilet with a dual-flush system and a modern, space-saving design.
Flush TypeDual flush gravity
GPF1.28 / 0.8
MaP Score1000g
Trapway2"
HeightComfort Height
WarrantyLifetime
Pros
- One-piece design
- Dual flush saves water
- Modern aesthetic
- Soft-close seat included
Cons
- 2" trapway is smaller
- Some reports of flush performance issues
The Swiss Madison St. Tropez is a one-piece dual-flush toilet that offers a contemporary look. Its gravity-fed system uses a 2-inch trapway and a 3-inch flush valve. The dual-flush option allows for water savings. Owner reviews appreciate its sleek design and easy cleaning. The soft-close seat is a nice touch.
For upstairs bathrooms, the St. Tropez's one-piece design reduces leak risk, and its compact size fits well in smaller spaces. However, some owners report that the flush can be inconsistent, especially with solid waste. It is a good choice for a guest bathroom where style is a priority, but for heavy use, a more robust model like the Drake II or Champion 4 is recommended.
Expert Take
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The Swiss Madison St. Tropez is a stylish option for an upstairs guest bathroom. Its one-piece design is a plus for leak prevention, but the 2-inch trapway may not handle heavy waste as well as larger models. Use the 1.28 GPF flush for solid waste.
Bottom Line: The Swiss Madison St. Tropez is a stylish, one-piece toilet for an upstairs guest bathroom, but it may not be ideal for heavy use.
Frequently Asked Questions
What is the best toilet for an upstairs bathroom?
The TOTO Drake II is the best overall toilet for an upstairs bathroom due to its 1000g MaP score, 1.28 GPF efficiency, and 2-1/8 inch fully glazed trapway.
Can I use a pressure-assist toilet upstairs?
Pressure-assist toilets are louder and can cause water hammer in some plumbing systems. Gravity-fed toilets are generally preferred for upstairs bathrooms.
What is the quietest toilet for an upstairs bathroom?
The Woodbridge T-0001 and TOTO Aquia IV are among the quietest, with gravity-fed dual-flush systems that operate at under 50 decibels.
How do I prevent toilet leaks on the second floor?
Use a wax-free seal or a reinforced wax ring with a plastic sleeve. Ensure the toilet flange is secure and level. A one-piece toilet also reduces leak risk.
What is the best clog-resistant toilet for upstairs?
The American Standard Champion 4 has the largest trapway at 2-3/8 inches, making it the most clog-resistant option for upstairs bathrooms.
Is a one-piece or two-piece toilet better for upstairs?
A one-piece toilet has fewer seams and reduces leak risk, but it is heavier. A two-piece toilet is easier to carry upstairs but has a tank-to-bowl gasket.
What GPF is best for an upstairs toilet?
1.28 GPF is the standard for water efficiency and performance. Dual-flush toilets with 0.8/1.28 GPF are also good options.
Do I need a wax ring for an upstairs toilet?
A wax ring is standard, but a wax-free seal like Fluidmaster Better Than Wax provides a more reliable, leak-proof seal for upstairs installations.
What is the MaP score for a good upstairs toilet?
A MaP score of 1000g is ideal for upstairs bathrooms to ensure reliable waste clearance and prevent clogs.
Can I install a toilet myself upstairs?
Yes, but it requires careful lifting and proper sealing. Two-piece toilets are easier for DIY installation due to their lighter weight.
What is the best budget toilet for an upstairs bathroom?
The Kohler Highline offers a 1000g MaP score and quiet flush at an affordable price, making it the best budget option.
How do I choose the right toilet height for upstairs?
Comfort Height (17-19 inches) is recommended for most users. Standard height (15 inches) is suitable for smaller bathrooms or children.
What is the best dual-flush toilet for upstairs?
The Woodbridge T-0001 is a top dual-flush option for upstairs, offering quiet operation and water savings.
Should I use a soft-close seat on an upstairs toilet?
Yes, a soft-close seat reduces noise and prevents slamming, which is especially important for bathrooms near bedrooms.
Sources
- EPA WaterSense, epa.gov/watersense
- MaP flush testing, map-testing.com
- Manufacturer published specifications
- Owner reviews aggregated from major retailers
- Plumbing trade publications and industry standards
Our Verdict
The best toilet for an upstairs bathroom must prioritize a powerful, quiet flush and a reliable seal to prevent leaks into the floor below.
How we rank & our data sources
We do not run physical lab tests. Rankings are built from published, verifiable data and real owner feedback, never paid placement.
- MaP (Maximum Performance) flush scores
- EPA WaterSense certification & GPF ratings
- Manufacturer specifications (trapway size, flush-valve, rough-in)
- Verified owner reviews from Amazon, Home Depot & Lowe’s
Researched by Marcus Bell · Last updated June 30, 2026 · Our review method
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