Tank Booster Pro

Tank Booster Pro is rated 4.2 out of 5 by 99.
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The Tank Booster Pro is a cost-effective solution for increasing usable hot water capacity on an existing water heater or a new high-efficiency water heater. It can effectively increase usable hot water by up to 238%. This product is a mixing valve that combines hot and cold water to ensure that water is delivered at a constant, but safe temperature to all outlet fixtures. This valve also reduces the risk of Legionella bacteria growth within your water heater by increasing the water storage temperature to a germ-killing 140°F (60°C). The valve features internal safety shut-off features in the event of either a cold or hot water failure.


ASSE 1070

ASSE 1017

CSA B125.3

NSF 372

SizePart #
3/4" Tank Booster Pro with Braided Hose Temp Gauge (US)
3/4" Tank Booster Pro with Corrugated Hose Temp Gauge (US)
3/4" Tank Booster Pro with Braided Hose (CA)
3/4" Tank Booster Pro with Corrugated Hose (CA)


Rated 5 out of 5 by from Well worth the money !! I was in need of replacing my 15 year old water heater and while researching units to buy I saw the ad for this Tank Booster and I liked the reviews and thought what the heck. I bought a new Rheem 40 gallon gas heater and the sharkbite fittings along with the Tank Booster, I call it a blender. I installed it all myself and I'm no plumber, Very good quality and it was great to adjust the water temperature at 125 at the faucet so no more scalding while adjusting the water temperature in the shower or sink. I really recommend this product. For $90, it's well worth it I think. I wouldn't use it in a hard water area without a softener before the tank... Arvada Colorado
Date published: 2016-01-10
Rated 5 out of 5 by from Excellent product! This product does exactly what it advertised. Easy install, quality components, tons of hot water. I replaced a worn out tank extender with this product. The steel braided flex hose made re plumbing super easy. Some of the reviews of this product question the purpose of mixing cold water at the tank vice mixing at the fixture. I live in Hawaii and I use two roof mounted solar panels to heat my water during the day. My tank temperatures routinely exceed 155 degrees. These temperatures are dangerous for my small children. This product allows me to store hot water that exceeds federal safety standards AND safeguard my children from scalding.
Date published: 2016-12-07
Rated 5 out of 5 by from FANTASTIC!!!!!!! I could not be happier with my purchase. The tank booster was an absolute breeze to install(I used a sharkbite water heater hose and ball valve for an even simpler installation). It took me approximately 15 minutes from start to finish. I have a 40 gallon water heater that the wife and kids were running empty every morning. Since installing the tank booster they can all shower back to back and I still have a long hot shower waiting for me when they are done. Much cheaper, faster, and easier than buying a larger water heater.
Date published: 2013-01-04
Rated 5 out of 5 by from Product works as described. It does a good job of regulating the outflow temperature to the hous... Product works as described. It does a good job of regulating the outflow temperature to the household's hot water pipe. It extends the water in the tank and keeps usage of hot water out of the tank from becoming inconsistent in temperature. I found that my showers temperature change over time is not an issue as it was with a tank that didn't have this regulator. It should be an energy saving device too, as it keeps the hot water tank from getting unnecessary water pull through it, thus saving money on reheating costs of the hot water. I totally recommend this device as a money-saver.
Date published: 2018-01-24
Rated 5 out of 5 by from working great Very easy to install if you putting in a new HWH at the same time . If you are adding it to an existing HWH you are going to have to shorten both inlet and outlet pipes to accommodate the additional hardware. It is working very well, both by regulating the output temperature to 120 degrees and lengthening the length of time there is hot water available for the household. We have not run out yet after two weeks of use. WARNING! Before you adjust the output temperature be sure you have the hot water running at a faucet or you will damage the valve. This is in the instructions but some men just won't read through the entire set of directions before messing with a gadget.
Date published: 2015-07-07
Rated 5 out of 5 by from Helped Solve Loss of Hot Water My Bradford White electric water heater was around 7-1/2 years old, when the duration of hot water was only a few minutes before running cold. I took 3 steps: 1) replaced the heating coils, 2) replaced the anode rod, and 3) added the Cash Acme Water Heater Tank Booster Pro. The two heating elements and anode rod cost around $70 with shipping. I thought about making the above changes myself, but I decided to have a plumber do the job, in addition to replacing the plastic 1/4-turn valves with brass. The plumber’s cost was $597. The results: no more hot water loss and the water heater is now better than new. I am a very happy camper.
Date published: 2018-05-05
Rated 5 out of 5 by from Plenty of Hot Water and Peace of Mind I just installed the HeatGuard Tank Booster, and I am very pleased with the results, though it did not “boost” my water heater’s output because the temperature was already set to 150 degrees. Our water heater had been unable to meet our needs during peak usage times before we increased the temperature. The downside was that the hot water was scalding when not mixed with cold water at the tap. We had never been concerned about burns in the past, but now have a newborn and don’t want to risk injury to him. The HeatGuard enables us to safely keep the water heater temperature very high so that less hot water is needed, mixing cold water in the supply line rather than at each faucet. The major benefits are that the hot water at each tap is no longer a scalding risk, and less hot water is used by appliances that simply draw unmixed hot water such as the washing machine and dishwasher. The parts and components are all of excellent quality and the manufacturer has a great installation video on their website using another of their products, Sharkbite water heater connectors. However the instructions and video were not very helpful for my installation--they seemed simple enough, but I ran into several complications. First, the water lines are cemented to the nipples on the top of my water heater. Second, my gas water heater has an expansion tank mounted on the cold water supply line that is only supported by the copper pipes. Because of these issues, the manufacturer's recommended push-fit flexible connectors were not an option. Instead, I used some of their other push-fit adapters to connect to each end of both the hot and cold water lines. Even if you do not have these particular difficulties with your water heater, it is likely that additional components will be needed to complete the installation unless your water heater is already connected with flexible lines on both the hot and cold side. This is somewhat disappointing considering the price of the kit, but makes sense because every installation is somewhat unique. I recommend a test assembly before cutting the water lines to ensure you have all the right connectors and fittings and know where they go. Also, be aware that both ends of the included flex pipe have rubber seals, but all other connections will require Teflon tape, which is not included. See the attached photo for my completed installation using the referenced push-fit connectors. For this method of installation, remove a 1” section of the cold water supply line (leaving 2” clearance on one side and 1” on the other), and 7.5” from the hot water supply line (leaving 1” clearance on both sides). I found that it was easier to install on the cold water line using a slip-fit connector with built-in fittings on either end rather than to add adapters to both sides of the T piece included in the kit. The end result is a very solid connection on each water line that is able to support the weight of the pressure relief tank. I went ahead and turned the valve temperature adjustment, which comes set at 120 degrees, to the highest setting of 130 degrees. This provides hot water that is 118 degrees at the faucets closest to the water heater. I am comfortable that the burn risk is minimal at that temperature, yet the water is still hot enough to clean with, warm up a bath or take a hot shower. While installation took around an hour and cost a bit more than expected, the peace of mind knowing that there is no longer 140+ degree water flowing to the taps in my house is well worth the price.
Date published: 2013-07-24
Rated 4 out of 5 by from Perfect for households of 4+ The tank booster was pretty easy to install. Hardest part was calibrating the water temp at the end. I wouldn't say it increases your hot water out put by 50% but it does help take your hot water further than with out it. It is also nice to know that with the blend of hot and cold that my children will not get scolded if they turn the hot all the way up.
Date published: 2013-07-25
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Is a diaelectric coupling required when attaching the tank booster to a hot water heater?

Asked by: stephenh
Hello, Yes, dielectric nipples should be installed on the water heater to prevent dissimilar metal corrosion. Many water heaters come equipped from the factory with dielectric nipples but we recommend checking to make sure. Regards
Answered by: SharkBite118
Date published: 2018-09-11

What if your inlet and outlet are on the side of the tank? Not the top.

Asked by: James C
Hello, Our Tank Booster Pro TMV can be installed on the side of the tank. You will have to make sure the 18" hose will be long enough to reach from the cold water inlet tee to the cold side of the mixing valve. Thank you
Answered by: SharkBite118
Date published: 2018-02-21

We recently had a Tank Booster Pro installed and a month we started having issues with our water pressure / well supply. Can the Tank Booster cause issues with the Pressure switch and/or does it substantially change the volume of water used?

Asked by: BenjaminS
Hello, Our Tank Booster thermostatic mixing valve has strainer screens on the hot water and cold water inlets that are designed to prevent debris from entering the valve body. If the pressure has dropped since installation we recommend cleaning the strainer screens. Please see pages 10 and 12 of the instructions in the link below for the strainer screen locations. Other troubleshooting information can be found on pages 21 - 22. http://www.cashacme.com/cashacme/wp-content/uploads/2014/08/Tank-Booster-Installation-Instructions-122015.pdf Thank you
Answered by: SharkBite118
Date published: 2018-01-29

How do I adjust the temperature setting on the valve?

Asked by: Jon C
Good morning, You use the Allen key that came in the packaging. Unscrew the inner nut to unlock the tempering nut. Then turn the outer nut in the direction of the arrows. + is hot and - is cold. Once you have the desired temperature, you will use the Allen key to lock the tempering nut in place.
Answered by: SharkBite_KM
Date published: 2017-11-28

what is the difference between the braided and corrugated hose?...which is perfered?

Asked by: AlbertR
Hello, Areas with hard water and water with high chlorine/chloramine content are extremely hard on rubber. The corrugated hose does not contain a rubber liner and holds up better in areas with these conditions. Besides resistance to hard water and water with high chlorine/chloramine content there are no benefits of one over the other. Thank you
Answered by: SharkBite118
Date published: 2017-11-09

In a house with 6 people getting a shower everyday. Average how much $ can i save in water & energy per year?

Asked by: oralia
Hello, We do not have information available regarding water and energy savings but information regarding the increase of usable hot water can be found at the link below. http://www.sharkbite.com/sharkbite/wp-content/uploads/Tank-Booster-Pro-Brochure-Web.pdf Thank you
Answered by: SharkBite118
Date published: 2017-05-25

How does this product work in a commercial installation where we use an on demand hot water run on gas system as well as a tank booster hot water heater back up

Asked by: TripperD
Good morning, As long as your system meets the required specifications on our products, you shouldn't have any issues. You can find the specifications on our Tank Booster by following this link: http://www.cashacme.com/cashacme/wp-content/uploads/2014/08/Tank-Booster-Installation-Instructions-122015.pdf
Answered by: SharkBite_KM
Date published: 2017-01-06

Does this product use dzr brass as some mixing valves I have removed have dezincified when on municiple water in Raleigh Nc and a continuous use re-circ pump

Asked by: Plumber NC 919
Good afternoon, The brass components for our Tank Booster are going to be DZR.
Answered by: SharkBite_KM
Date published: 2016-11-09
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