Two High-Flow Toilet Brands That Never Clog

Updated on March 19, 2019
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Jason has been an online writer for over 12 years. His articles focus on everything from pop culture to product reviews.

Do you have a toilet that clogs so often that its best friend is a plunger?

It's annoying and gross to have to hammer away at your toilet with a plunger every time you have a bowel movement, splashing God-knows-what all around your bathroom, just because you used more than two squares of toilet paper or ate a particularly high-fiber meal.

Fortunately, some ingenious toilet engineers (yes, they exist, although they might not call themselves that on their resumes) have designed models that are almost impossible to clog.

And, no, I'm not talking about those water-saving ones that suck loudly like a rocket, like those scary ones in airplanes.

These impossible-to-clog toilets generally do the job by having a larger, wider-diameter flush valve (the stopper in your tank that lifts up to send the water gushing downward) and trapway (the pipe that leads from the bowl to your sewer line), so that a higher volume of water flows through your cistern faster, making it less likely to get stopped up.

We have the American Standard Champion 4 at our home, and my parents have the Toto Drake, so I can vouch for these two models. They're both widely available.

The American Standard Champion Series

The cheapest (and homeliest) version of the Champion 4. We paid about $140 for it at Home Depot. You can get sleeker-looking versions, too.
The cheapest (and homeliest) version of the Champion 4. We paid about $140 for it at Home Depot. You can get sleeker-looking versions, too. | Source

The name is partially misleading: my AS Champion was, in fact, made in Mexico. But it is certainly a champion.

In the two years we've been using it, we've had the thing clog up once, and that was only after a particularly overzealous use of toilet paper, the quantity of which could have probably choked a Tyrannosaurus rex.

The Details

  • The company boasts the largest flush valve and trapway in the industry: 4" and 2 3/8", respectively. They say that it will move a "mass" (wonder what they mean by that?) that's 70 percent larger than the industrial average. That's a lot of fiber!
  • We bought ours at Home Depot for about $140 (yes, you can get them that cheap, but depending on the features and look you're after, you can also spend upwards of $500) and installed it following online instructions. It was fairly straightforward to install, although getting it to line up flush with the floor required some wooden shims before we could caulk it into place.
  • Because this toilet is also virtually uncloggable, you end up using a lot less water. Instead of multiple flushes for each "sitting," you end up only having to flush once after it's all said and done.
  • Keep in mind that this toilet has a 1.6-gallon tank capacity (not 3.0-gallon, like older ones), so that's all the more impressive.
  • Another unrelated (but nice) benefit is that the inside of the bowl is coated with something called EverClean, which slows down the accumulation of a biofilm (most obvious as a ring at the waterline). I would say, based on our experience, it does work somewhat, but you won't be throwing away your toilet brush anytime soon.

American Standard Champion Flushing Demo—Watch It Flush 18 Golf Balls with No Problem

The Toto G-Max Toilets

Click thumbnail to view full-size
The Drake - rounder, smoother, more modern-lookingThe Promenade - considerably more classic-looking
The Drake - rounder, smoother, more modern-looking
The Drake - rounder, smoother, more modern-looking | Source
The Promenade - considerably more classic-looking
The Promenade - considerably more classic-looking | Source

Toto of Japan makes a wide range of sleek-looking toilets (so nice-looking, you almost forget what they're really for), and those with the "G-Max" capability are the high-flow units that are almost impossible to clog.

My parents have a G-Max toilet at their place and tell me they've never experienced any clogging problems with it.

The Details

  • Although these toilets prevent clogs in much the same way as the AS toilets, American Standard can still lay claim to the largest flush valve and trapway. Toto's G-Max toilets' are just a touch smaller: a 3" flush valve and 2 1/8" trapway.
  • However, Toto's variant pairs the valve with a powerful siphon jet that does give it a bit of a gurgly FWOOP! sound reminiscent of airplane toilets but not nearly as violent-sounding.
  • There are two lines that feature the G-Max capability: the Drake (a bit wider and smoother-looking) and the Promenade (narrower, and more classy/old-fashioned looking).
  • The Drakes retail from $350 upward, and the Promenades begin at around $525. You might be able to get them cheaper from a discounter.
  • A couple of Promenade models offer what Toto calls "Sanagloss," a coating for the interior of the bowl that prevents the buildup of bacterial biofilms, mold, and other stuff. This is similar to American Standard's EverClean surface.

While I've used the Drake a few times at my folks' place, my parents are the ones with lots of day-to-day experience with it. When I asked them how they are, my dad said: "They're great." Any problems? "None."

This article is accurate and true to the best of the author’s knowledge. Content is for informational or entertainment purposes only and does not substitute for personal counsel or professional advice in business, financial, legal, or technical matters.


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    • profile image


      2 weeks ago

      MaP toilet test protocol is 50gr soybean paste stuffed into a condom, length about 4", a mere bagatelle compared to the extrusion of someone consuming the fiber and roughage recommended in dietary guidelines.

      Toilets should be tested the way I test them: with multiple 2+" x 12+" egesta.

    • profile image


      2 weeks ago

      18 golf balls in one hole. Either a golfer's pipe dream or a big water trap!

    • livelonger profile imageAUTHOR

      Jason Menayan 

      2 months ago from San Francisco

      Maybe not golf balls, but giant kidney stones?

    • profile image

      James T #2 

      2 months ago

      Yeah because when I pass golf balls I want to know my toilet can handle it!!

    • profile image


      9 months ago

      I am a twice a dayer and I have yet to find a toilet that could withstand my power. No joke, I love eating curried vege and toasted and buttered brown bread.

    • profile image


      9 months ago

      I have a Toto Drake II and it has clogged a few times but better than my old Kohler. I don't recommend the Toto Drake because I am having to change the gasket/flapper annually. The tank hole and gaskets are badly engineered. Also, it is made in Mexico, not Japan or America.

    • profile image

      Toto SUX 

      10 months ago

      I just sent back my Toto Drake 1.6 gpf piece of crap, pun intended. It clogged 3/4 times and the on time it didn't I flushed 5 separate times. It may sound like I'm 500 lbs and just finished a hungry man competition but no, it's just an awful toilet that somehow has incredible reviews. The plunger also doens't fit well into the strangely shaped opening.

      I also have an AS Champion 4. I've needed to plunge 2 or 3 times in several years and the first time was when I threw wads and wads of paper towels in it while cleaning the bathroom. Off to get another one.

    • profile image

      Paul Floyd 

      17 months ago

      I just want to let you know that your toilet might be able to handle the test of flushing 18 golf balls but your toilet could not handle a week of me not Taking a poo , because on a rainy Friday evening I clogged up the big bad American standard champion 4 , I was very disappointed in the way it proformed while in battle. I think it's time to go back to the drawing board. If you would like my assistance I would be glad to help in any way possible . Thank you

    • profile image


      18 months ago

      I would have loved the demo to include a hotdog or sub. If it accomplished that, I'd be 100% sold. 12 inch sub, I would start selling it myself.

    • profile image


      18 months ago

      Had issues for years with a family of 6. We got the As Champion and have never had a problem. Going to get a 2nd for my oldest son. THAT will be the REAL test.

      I know there is always a negative somewhere. I read lower in the comments that some mutant and his offspring clog it all the time. they must use 3 rolls of Charmin per flush.

      We have definitely punished it and no issues. Unless you require a professional grade toilet for mutants or a rhino, this one should make life easier for you.

    • profile image


      21 months ago

      I bought that American stander and with my kids it's not really ass good ass it's made to look . I have 3 healthy kids and they don't shit golf balls , it's more like solid logs and lots of toilet paper . Still have lots of plugs , plunger sets right next to toilet .

    • profile image

      K. W. Bentley 

      22 months ago

      How come the best performing toilets (Champion 4) and the best looking toilets (Toto Promenade) don't come in Standard / Normal heights for those of us with short legs?

      My daughter has a "squatty potty" for hers but being guys, my son and I get tired of kicking that darn thing out of the way when we need to do "number one" !

    • profile image

      Lorin Partain 

      22 months ago

      Hey you know what? Some very smart people invented a toilet a very long time ago that never clogged up too. It's called a, get this, a toilet. Oh but those toilets are now outlawed because they flush the actual amount of water needed to ensure that the toilets work and the sewers flow as intended. Silly me, Congress knows best.

    • profile image 

      22 months ago

      So is it nessesary to enlarge the sewer line that connects to the bottom of the toilet?

    • profile image


      3 years ago

      Great and helpful article--thanks. A salesman showed a group of hardware shoppers the AS Champion and told us it will flush 18 golf balls. I mumbled that I don't poop golf balls. The crowd broke into laughter. The salesman stumbled verbally for several seconds, then asked, "hotdogs maybe?"

    • profile image


      5 years ago

      There actually is an Australian brand called Caroma (and is available in some places in the US) that has HUGE trapways (either 3" or 4"). There are people like myself, who for unknown reasons (maybe because I am vegan?) are greatly suffering even with a 2 3/8" trapway. I've looked into Caroma, and while it looks good from a size perspective, it has other issues plus bad service when I contacted the company that prevented me from buying. Plus you have to buy from exclusive distributors in the US; although, Amazon seems to have some of their models online.

    • Sharkye11 profile image

      Jayme Kinsey 

      5 years ago from Oklahoma

      Funny and useful. I have two toilets that refuse to flush at all without manual assistance. Inconvenient and gross. Will definitely keep this hub in mind when we go shopping for new toilets next week!

    • TheMagician profile image

      Kay B 

      7 years ago from Tampa, FL

      That American Standard toilet took it like a champ!

      I'll def. be looking into one of those!

    • hemorrhoidremedy profile image


      7 years ago

      I`m thrilled! I guess it`s high time we changed from using pit toilet to this amazing system of answering the call of nature.

      Great info, man

    • Debby Bruck profile image

      Debby Bruck 

      7 years ago

      We all want to "LiveLonger" through better sanitation and efficiency ~ Super Hub and I'm sure those who are renovating, redoing bathroom, or just in time for a replacement must read this newsworthy article. I voted up and helpful. I was wondering if they tested for each item and perhaps that 19th golfball would have put them over the top and the same for each of the other items? The miso simulated the natural product, because in everyone's mind is the thought, "yeah, but what about the real thing?" This was very educational. Have a super day. Debby

    • NormaRuth profile image


      7 years ago from Oregon

      This is certainly something I will remember if and when we need to change out our comode! Thanks for the information.

    • stayingalivemoma profile image

      Valerie Washington 

      7 years ago from Tempe, Arizona

      This was some really good information. I have 3 little boys who are always throwing tissue or small toys in the toilet. I get so tired of using the plunger 2 or 3 times a week. Thanks for the good info! Voted up!

    • livelonger profile imageAUTHOR

      Jason Menayan 

      7 years ago from San Francisco

      Simone: Yeah, although I can think of a few more hilarious names, like "The Aqueduct" or "The Fontana di Trevi."

      AEvans: I admit having a thing for toilet humor. It runs in the family! And, yeah, we get the "it wasn't me" too...even though there are only *2* people living in our household! I guess the mice have a high-fiber diet, too. ;)

    • AEvans profile image


      7 years ago from SomeWhere Out There

      I have not laughed that hard in a long time! lolo! After reading through the tears of laughter, I am going to have to check out the promenade toilet. I can't stand clogs and tonight we had one and it wasn't pretty! lolo! In our house "I don't know, " lives here and "it wasn't me." So if we purchase a knew toilet maybe both of them will go to someone else's house. :D Rated up! :)

    • Simone Smith profile image

      Simone Haruko Smith 

      7 years ago from San Francisco

      Hahaa, looks likeI need one of these, seeing as my current toilet doesn't even tolerate a wad of toilet paper. Gosh though, is there any brand name more hilarious than "The Promenade"?

    • VENZKHVAM profile image


      7 years ago from Milk way galaxy, trying to find a more adventurous place in another galaxy with my great followers

      Dear LIVE LONGER,

      Flushing with golf balls wow.that was a cool amusing flushing video .I think nowadays due to heavy online marketing and door to door marketing many people has shifted to a modern flushing toilet and in INDIA it is known as western toilet and INDIAN toilet separately.

      I am sure the hubbers can take some idea from this and also give their idea after implementing some nice flushing toilets which never gives and problems.

      voted up and useful

      I am following you also.

    • livelonger profile imageAUTHOR

      Jason Menayan 

      7 years ago from San Francisco

      I thought the video was amusing, too. I suppose all of those different materials represented the range of "textures" a toilet bowl could see. ;-)

    • xcubist profile image


      7 years ago

      Wow, quick and efficient, that was a fairly amusing flushing video. The 16 water wigglers had to be the funniest items flushed (as well as most unusual), although the bucket of golf balls was quite impressive. Nice job.


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