Dual flush toilets have been around for quite some time and they are slowly gaining prominence. More people are now becoming aware of the water conservation and switching over to a dual flush toilet tank is an ideal solution.
Actually the dual flush toilet tank offers two settings for flushing; a slightly smaller push button for liquid waste and a larger one for the solid waste. When you push the smaller button, it releases lesser quantity of water as compared to when you are pushing the larger one. This serves the dual purpose of saving water on the one hand and giving good results for the elimination of solid waste.
We researched the market and have prepared a list of the best dual flush toilet tank. These tanks have been reviewed for their ability to flush in the required quantities of water, ease of use, design, durability, water usage and mechanism and price. You need to ensure that the model is high quality that does not require you to flush two or three times and at the same time keeps your toilet hygienic and clean. Peruse through the list to find the best dual flush toilet tank.
Scored 3.9/5.0 – From 364 Customer Reviews
Priced From $23.22
- Easily converts a standard toilet into a two-button, dual flush toilet
- Combines two products, HYR270 HydroRight Dual Flush Converter and HC660 HydroClean Fill Valve, that together will increase your toilet’s efficiency
- No tools or tank removal needed for installation
- Saves water and money as well as eliminates common leaky toilet problems
- Detects leaks and signals when a leak is found
I had some reservations about purchasing this product due to the negative reviews, but after having the unit installed in a 1987 American Standard for a few months I think I can safely say that if you are careful about following the instructions (and they are a little complex), you’ll be happy with this purchase. $30 beats $250 for a new dual flush toilet, and you keep a hundred pounds of ceramic out of a landfill.I do have some advice to give to future purchasers of this device:First, read the instructions through once before you install the device. It’s good policy for any installation, but these instructions really are at what I’d call the high end of a layman’s capability. What’s more, you really can’t count on the manufacturer’s support — I made two calls on two separate days, during business hours, and was shunted to voicemail both times. I never received a call back. Fortunately I was able to resolve my problem myself (see “Third,” below).Second, everything about setting this unit up requires /firm/ pressure, and nearly every part that moves in this device locks into or out of place with a loud snapping sound. You’re going to think you’ve broken something at least once during installation and calibration. Don’t let it scare you. Be careful, but don’t be too gentle.Third, when you install the dual-flush converter, it comes with the blue float (which sets the quantity of water to use in a light flush) set to the highest point (the smallest possible amount of water). As part of the calibration process, the instructions will tell you to test light-flush the toilet, moving the blue float downward each time until the bowl drains completely.What I discovered was that repeatedly light-flushing the toilet will cause a false positive result (a light flush will succeed when the blue float is still set too high), and then you won’t get successful light flushes later, which can be frustrating (and gross). I found that test light-flushing the toilet gave me false successful light flushes only four clicks from the highest setting, but to get consistent successful flushing over a period of days, I needed to be about five clicks from the lowest setting. This is still a lot less water than is used for a full flush!What I recommend is this:1) Install and calibrate the device according to the instructions.2) Press firmly down on the blue float until it reaches its lowest point (the largest possible amount of water). This will make a loud ratcheting noise; again, don’t worry, you haven’t broken anything.3) Use the toilet normally for a day or two.4) Once you’ve determined that the toilet always light-flushes successfully at this setting, pull the blue float up three clicks.5) Repeat steps 2-4 until you start getting failed light flushes.6) Press the blue float down one click.7) Use the toilet normally for a day or two.8) If you start getting failed light flushes, repeat steps 6 and 7 until you don’t.9) Rest easy knowing that your light flush is properly calibrated.Update: bought two more for the upstairs bathrooms!May 2014 Update: I’ve noticed that the supplied zip-tie securing the flush meter to the fill pipe has broken in all three of my installations, the last of which I performed only last year.I believe the rubber o-ring around the fill pipe is still keeping the gasket secure, so I don’t think this is a major fault, but be advised that if you are performing a first-time installation you may want to replace the supplied zip-tie with a sturdier one you buy yourself.December 2014 Update: In the interest of full disclosure, because this review gets so much attention, one of my installations failed after about 26 months. My other two are still going strong, and I suspect it was not a defect in the device. We had one of these — Kaboom with OxiClean Scrub Free! System-1 ct — installed, and it appeared to be leaking highly concentrated cleaning solution into the tank. I think that what happened was the cleaning solution in the tank ate an internal seal in the flush valve, which is a thing that happens. You should never put cleaning solution of any kind in your toilet tank.The failure was slight, a very slow drip, but every time it dripped it made a loud pinging that resonated throughout the downstairs of the house. I could not correct it by manipulating the valve, so It had to go. Rather than install another one of these devices we decided 25 years was a good run and installed one of these: American Standard 2989.101.020 Concealed Trapway Cadet 3 Right Height Elongated Flowise 1.28 gpf Toilet with Seat, White.
Scored 4.1/5.0 – From 59 Customer Reviews
Priced From $24.80
- Converts your toilet to a water-saving dual-flush design in minutes
- Fast-fill valve provides efficient operation
- Eliminates the flapper, chain and handle
- Works in standard 2 in. flush toilets
- Installs without tools or tank removal
- Includes new, split handle, flush activator
Super easy to install and works exactly as described. In addition, I want to mention that the larger flish from this device is much more aggressive than the flush from the regular flapper and valve that it replaced. Not sure why, but it flushes much better now, in BOTH modes, than it ever did before. I also noticed that the valve really stirs up the tank, and I like that as it keeps sediment from building up in the tank. The instructions were simple and all parts were included except for the optional “j-tube” which apparently helps stir up the tank, but i don’t think that it’s at all necessary because the valve already aggressively shoots out a jet of water at the base of the valve in addition to the fill tube at the top. I think that j-tube would possibly make the tank circulate in a spiral as it fills, but that would be the only difference.Please note that both the top of the valve and the top of the dual-flush device are designed to literally meet the lid of your tank and they are pretty tall, so if your tank is a shorter tank, this may not be the kit you want. I have a typical tank on my toilet so it fit perfectly but as other reviews probably will indicate, if you have a shorter tank be aware that it may not fit, height-wise.
Scored 3.7/5.0 – From 5 Customer Reviews
Priced From $290.00
- For finished walls up to 31⁄2″ (9 cm) thick
- 47 inch (1190 mm) nominal Frame height
- Impact resistant high density polyethylene (hdpe) tank, insulated to prevent condensation
- 16-Gauge, powder-coated, structural-steel tubing rated to 880 lbs. (400 kg) without damage to finished wall or carrier unit
- Bowl rim height adjustments from 15 inch to 19 inch (381 to 483 mm)
Scored 3.7/5.0 – From 693 Customer Reviews
Priced From $13.75
- Easily converts a standard toilet into a two-button, dual flush toilet
- Drop-in installation with no tools or tank removal needed
- Fits 1.6 to 3.5+ GPF toilets with 2 in. flush valve
- Permafit silicone seal is chemical resistant and will not warp
- Eliminates the most common problems in toilets: the flapper, chain and handle
I have now replaced all of the flappers on all three toilets in my house with these. I ordered one to make sure that the dual flush mechanism would actually work and flush everything on the single flush. It worked perfectly on the first toilet on and I ordered 2 more.The mechanism to attach the device is a simply cable tie. It comes with one already attached. I did have to cut off the one that came installed on the unit and use the spare that was included to get this to slide down over the fill tube. Not really an issue, but you might want to remember it when you install. And, the size of the fill tube was not an issue. One of the toilets in the house had a very large fill tube. I was able to use a bigger cable tie and it works perfectly.I had the correct type of water supply in all of my toilets. As others have mentioned, check to make sure you have the correct fill type in your toilet.The units are very adjustable for both the single and full flush. It does take a few minutes to get all of that adjusted correctly.I have gotten my first water bill since I’ve installed them. With these converters only installed for half of the billing cycle, my daily water usage went down 15 gallons a day for a 2 person household. I’m assuming that this will go up to 20 or more gallons a day when it covers the whole billing cycle.I am really pleased with the results and would recommend that anyone who wants to save water, without replacing your toilets, this is a great option.Update 05/11/2010We have not gotten a water bill that covers the entire billing cycle. The average gallons per day is down 50 gallons! The three converters that I put in have almost paid for themselves already.
Scored 4.3/5.0 – From 57 Customer Reviews
Priced From $161.69
- no fabrics
- Pressure assist Flush
- ADA Compliant
- Floor mount/Floor outlet
- Ultra-High-Efficiency Flush
- Uses just 0.8 gallons per flush (GPF)
Overall, I’m very happy with this toilet and would highly recommend it to others.FYI. Not only is the wax ring and seat not included. You will need either save your old nuts to secure the toilet to the floor or buy new ones.I recommend the Fernco wax free toilet seals. From looking at the design and installing it myself, I can see how this is a superior way to seal. You can feel the seal click in from the ribs. I bought the 3″ as well as 4″ version because I was not sure what size drain was under my toilet. I hear 4″ is the most common though. There is one available for sale on Amazon. But from looking at the picture, it appears to be an older design, as the one I bought at Lowe’s has 4 ribs whereas the one for sale on Amazon for a very low price had two ribs on the picture. I don’t know. Maybe it is just the picture.You should check the new toilet and tank first and make sure it not damaged from shipping before removing your old one. Otherwise, you may find yourself reinstalling your old toilet.A plunger is helpful in getting most of the water out from the bowl. Then I used a small towel and bucket to get the rest of the water out. I suppose you can use a wet dry vac too.I personally separated the old tank and bowl to lessen the weight for disposal. I put the old tank and bowl in separate large garbage bags so that no water drips onto my floor while I carry it out of the house.Some people recommend caulking the base of the toilet. I normally do not do this because if the toilet is leaking. I prefer to see the leak instead of having the caulking keep the moisture in.Fortunately, my toilet was level with the floor when installed. But you can use coins in the back of the base if it is not level.Despite the being pressure assisted, this is the quietest toilet in my house. You can hear it yourself by searching for this toilet on youtube.While I have no issues with the height of this toilet, others in my household do. So you might want to take this into consideration before you purchase it.
Scored 4.3/5.0 – From 41 Customer Reviews
Priced From $14.00
- Easily converts standard 2” toilets and 2-1/2” flush valves into a two button dual flush toilet
- Adjustable valve height from 9”-14” with a simple ¼” turn
- No tools or tank removal needed for installation
- Eliminates common leaky toilet problems
- Includes both DuoFlush™ Converter and Fill Valve, that together will increase your toilet’s efficiency
I was disappointed to find this didn’t fit after reading it was supposed to be nearly universal. Given that my toilet was an original fixture in a house built in 1937 I was willing to consider that the toilet was a reasonable exception to the universal claim. I ended up replacing the overflow tube in the tank, which required removing the tank. After that change this unit worked beautifully. I like the dual flush system. It makes sense to use different volumes of water based on what is being flushed. Had it not been for the initial incompatibility, installation would have been quick and simple. The instructions are clear and thorough. I’m not sure I would have made the install in the 20 minutes they claim it should take, but not a whole lot more. I’m pleased with the purchase and would recommend the product.
Scored 5.0/5.0 – From 2 Customer Reviews
Priced From $5.28
- Compatiable with most toilets with a 48-55mm dia hole in the cistern lid
- Supplied with plastic threaded rods that can easily be cut down to size
- Made of high quality plastic, very durable
- Key board diameter: Approx. 1.89inch/4.8cm; Mounting thread diameter: Approx. 1.50inch/3.8cm
- Rods thread diameter: Approx. 0.28inch/0.7cm; Rods length: Approx. 4.53inch/11.5cm
Scored 4.5/5.0 – From 35 Customer Reviews
Priced From $259.99
- Not fabric
- Provides clean and modern finish with no visible pipe work
- For installation in wood or steel stud walls that provide support equal to 2-inch by 6-inch (5.5-inch) depth
- For 2-hole wall-hung wash-down WC with 7.1-inch or 9.1-inch fastening distance
- Fits15-inch to19-inch toilet heights
- 1.6 GPF, supports up to 880 pounds
I love not having to clean behind the toilet. Wall-hung toilets are the standard for toilets in Germany and I am now happy that I have one in my bathroom. Geberit is a quality manufacturer that has made wall-hung toilet carriers for 50 years and I have good faith that this wall carrier will last a long time. We installed this as part of a full bathroom remodel as it requires opening walls and possibly relocating plumbing. As we needed to do that anyway in order to add plumbing for a bathroom upstairs, it wasn’t any additional work. We chose the Toto Aquia toilet to go with the wall carrier and there were no issues with fit. Our toilet is solid but this will depend on your installation. Stud frame walls will need to beefed considerably and the wall board will also need to be stronger than dry wall. We chose cement board under 1/4 beadboard paneling. Whoever installs this needs to do additional research about installation as the installation instructions are not that great. I think the reason why the instructions are lacking is that German construction doesn’t really include wood stud framing but relies on steel stud systems that are secured into masonary walls.
Scored 4.2/5.0 – From 296 Customer Reviews
Priced From $6.07
- Water-saving toilet fill valve with adjustable mini-valve, audible leak detection and cleaning tube
- Calibrates to adjust the exact amount of water needed to help save on water usage
- Cleans the tank and designed to fit standard toilets
- Installs easily without tools
- Refills quickly; Height adjusts from 11 in. to 13.8 in.
I really like the features of this toilet fill valve. The bowl overflow adjustment is a nice water saving feature. The cleaning tube works well to keep water scum from accumulating in the toilet tank and on toilet flappers. The “click” locking mechanism ensures you don’t over turn the locking nut when you screw this fill valve into the toilet tank.I have installed several of these fill valves in different toilets in the last five years and never had a problem with them. It seems I have had less issues with this valve than with other brands in the past. The first one of these HC660 fill valves I installed over five years ago still works as a normal fill valve but I did replace it recently because the special cleaning flow tube that is unique to this fill valve seemed to stop allowing water to flow for its special tank cleaning tube. However the valve continued to work to fill the tank just fine and I could have left it as it was working. My current residence has sixty year old steel pipes that tend to allow chunks of rust to break off and clog water valves. In older homes I have seen many fill valves including the popular competing brands run continuously when the valve disc became old, clogged or broke. You can turn off the water at the wall valve and then in the tank partially disassemble these float type fill valves without completely removing them from the tank… in order to clean the disc valve … Look for the online videos on YouTube or other sites how to do this. (I noticed that this HC660 fill valve comes with a small locking tab you can see that is built into in back and very top of the valve. It may need to be twisted off or snapped off and pull out to be removed before the top assembly can be twisted off to get to the disc valve seal for cleaning. See the HydroClean web site for more information.)Note: One thing I noticed about the new HydroClean valves is they come shipped with the float adjustment turned all the way clockwise (float all the way to the top) which is a position where the float can not engage the disc to shut off. With a screwdriver or by hand simply rotate the float adjustment an adequate number of turns counterclockwise (lowering the float height) so that when the valve disc does settle and seat the float has enough space to float up to close the valve. A simple adjustment of the float height to make sure it is not at maximum height and has plenty of room to float higher remedies this. Note that this is the float height adjustment that I am referring to and NOT the tube height adjustment.
Scored 4.5/5.0 – From 172 Customer Reviews
Priced From $9.65
- • Most powerful toilet fill valve on the market with a 7 year warranty
- • Optimizes performance while saving water and money
- • Quietest fill valve on the market with easy install
- • 2X greater refill rate than standard fill valves
- • Helps prevent excessive or inadequate bowl fill level
- Toilet fill valve
- Works with all toilets
- Helps save water
- Dual flush
- 2x greater refill rate
I usually purchase a 400A but I thought I would give this newer model a try. It’s every bit as good as the 400A. It has excellent instructions for those who are new to changing a fill valve. The instructions are expanded over the 400A’s to include using with 3″ and Duo Flush valves in addition to the more traditional 2″ valve. .As others have said, it is the unit is the same as the 400A with the exception of the roller clamp and hose clamps on the refill tube as well as a spiffy-looking blue cap replacing the black cap. If the internals have changed I can’t tell, but it does still use the 242 replacement seal in case you are wondering. The main benefit of this valve is you can adjust the amount of water that goes into the overflow pipe. This is the water that refills the bowl after a flush. If you let too much water flow you will waste water. You need only enough water to fill the bowl. If you don’t allow enough water the toiler may not flush correctly the next use. I found that I had to set the clamp down a notch to properly fill my bowl. Previously I was probably only wasting a few ounces of water but why waste if you don’t have to?The 400A is a bit cheaper but this is a very worthy alternative in my opinion. This one does seem to fill a bit more quickly and slightly quieter than the replaced unit, hower the replaced one may have been a bit clogged. We have super hard water where I live and these fill valves have a rough life and plug up regularly and need cleaning out to work well again.
Purchasing the right dual flush toilet is essential to ensure that your environmental footprint is reduced. A good quality flush toilet will do its job in just one push. In the course of time, such a tank will pay for itself by saving on your water bill.
We hope that you liked our review of the best dual flush toilet tank and you were able to find the ideal one for your home. We would love to know which of these toilet tanks you chose and why. Also share with us your experiences and whether you were able to get the desired results of reduced water usage.