How To Flush A Tankless Water Heater The Easy Way | DIY Plumbing
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- Опубліковано 4 жов 2024
- How To Flush A Tankless Water Heater The Easy Way | DIY Plumbing - Everything You NEED to Know About Water Heaters
Tankless water heaters are rapidly increasing in popularity. Tankless water heaters have a lot of benefits that can make your life easier! To maximize those benefits, you need to flush your water heater at least once a year. In this video, I'm going to show you a quick and easy way to flush a tankless water heater, with a bonus at the end to save you some money!
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Thanks for watching! I'm Roger Wakefield, The Expert Plumber, and welcome to my channel. On this channel, it's ALL about plumbing. We play games, we experiment, and we have FUN here, talking and learning about all things plumbing!
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Quick note I’m a tankless technician and there were a few steps missed when descaling this Rinnai unit each manufacturer has certain steps to take before descaling or flushing the tankless. On Rinnai’s there’s something called a bypass valve that has to be in the fully open position this units bypass valve wasn’t fully opened. The steps you take to open the bypass is you unplug the unit from the outlet for atleast thirty seconds and you have to have the front cover off when doing this. After thirty seconds you plug it back in and you’ll hear a buzzing type of sound coming from the valves and you have to wait for the buzzing to stop once it stops that means the bypass is in the fully open position and you can go ahead and rapidly unplug the tankless. And now you have allowed for the unit to be fully descaled at every possible location within the unit. With rogers current procedure there’s a few spots that didn’t get descaled. And same goes for other manufacturers like Noritz but not so much Takagi or navien on those units you can just take the current steps roger did. And also be aware if you are planning on descaling a unit that hasn’t been descale in over 8 years it may be prone to a Heat Exchanger leak and that will ruin your unit so if your unit has never been descaled I would advice you to call the manufacturer so they can recommend your nearest professional tankless company to come inspect the unit before it could possibly get damaged.
Noritz procedure is different than Rinnai’s
Wow…some great advice….thank you!
Modern noritz models have a wire that needs to be connected to the left of the motherboard to time and record the flush in the unit history. Im most familiar with Noritz here in Utah. I see Navien a lot too though.
Thx man, I was about to proceed and after reading your comments I watched a video from Noritz which says to leave the unit ON!
David Mancilla, The AO Smith electric water heater doesn't come with two drains underneath. My lines and tank were recently flushed and so much calcium comes out hot side only. Why flush the cold side? Also, how does the vinegar help?
Excellent instructions! I’ve been flushing my Navien tankless water heater this way for 5 years using vinegar. I bought a cheap sump pump and washing machine hose kit from amazon and an orange bucket from Home Depot for my flushing system. I’ll isolate the heater and drain it then take out the small screen filter on the inlet side and wash it out. Finally I’ll circulate vinegar for 1.5 hours. I do unplug the heater and have found that the pump over the course of the flush will heat up the vinegar nicely. Upon completion of flushing, I’ll just drain what I can out of the heater and put it back in the plumbing circuit and run several gallons out the nearest hot water tap to purge any remaining vinegar and air. Works like a champ. Finally, I’ll write on the side of the heater the date of flush with a sharpie so the history of flushing is readily apparent.
Very good friend of mine Bob spent a chunk of change to covert to a tankless upon remodeling a 1979 home he purchased.
He did not flush the new tankless ever ( didn’t know he was supposed to )
It went belly up ruined the thing so Bob went back to a conventional tank water heater and boy was he pissed that flushing the thing was so important and he is extremely handy!!
Now I have one on a brand new home and for sure will be flushing the thing out the recommended once per year!
Been plumbing for 15 years and always watch your videos. You definitely got a lot of experience thanks
Thank you for this video. I live in Alpharetta, GA and called 5 plumbing companys. They all quoted me #$325.00 to $375.00 bucks. I watched this video and went to home depot. I got a pump 1/6 HP 28gpm, a home depot bucket, CLR cleaning agent. I already had the washing machine hoses. Did it myself and saved myself $325-$375 bucks - the cost of the pump and bucket - Thanks, Thanks, Thanks. Now I can do this myself every 6-8 months and have the pump to use to drain my hottub too. Very happy
Glad it helped! I was just in Alpharetta a couple weeks ago for a conference! Love it there
The thing that blows my mind is that my tankless instructions said nothing about doing this flushing so I think I'll be going out this weekend and picking up a pump and some vinegar to flush mine out since it's a few years old.
same here, bought my house 3 years ago and the builder told me nothing about flushing the tankless water heater every year. I better get to doing this soon!
@@joeymesa4952 Know your equipment!
You dnt have to do it just will make your unit last twice as long same with traditional tanked water heaters supposed to be flushed yearly it cleans all sediments and minerals in the units.
Vinegar has chewed through 2 of my pumps. Apparently it will slowly eat certain plastics. I've switched to a citric acid mix.
@@homealone5087 what formula do you use.
Watched the video prior then ordered what I needed on Amazon (don’t purchase the descale bundle... it’s cheaper to buy separate) it was about $50 for the hoses & pump which now I’ll use for future de-scaling & the solution was about $20. I just de-scaled my Rinnai RL94 Tankless Heater..watched the video again to walk through the process while Roger was doing it & it went seamless..So easy & plumber was going to charged $250. I would recommend giving it a try...you’ll be surprised how easy it is & you’ll save yourself lots of money!!!
Thanks so much Roger!!!!
what pump did you buy?
Where is the list of stuff to buy?
what pump did you buy? what pump did you buy? what pump did you buy? A stupid omission from the original video. The jackass doesnt tell us which pump to buy out of over 500 choices.
Great video really helpful. I do HVAC for a living so I have installed a few of these units. And I have replaced units that are only 3 to 5 years old because they were already rotted out and emitting CO from not being cleaned yearly.
Thank you for this video. Because of health reason my husband couldn’t help me , BUT , I just accomplished the flush. Couldn’t have done it without this video. My only suggestion is that when you turn something on or off have the camera show us up close what valve you are working on. For an amateur just calling it by name is confusing. Since there are 4 valves we have to do something to. But again thank you. I got it done.
Very helpful video, Roger. I have a 20 year old 50 gallon water heater that I know is about to throw in the towel, so I"m researching the ins and outs of tankless.
Very clear and easy to understand. If I had more teachers like you in high school, I'd have probably graduated with a higher GPA
Just my two cents. We recently got a tank-less water, it is terrible. It is very slow to heat the water and they did not install the isolation kit. The maintenance is ridiculously more difficult. I cannot wait for it to break. This is a big step backwards in technology.
Probably installed incorrectly. They work quite well.
Ours works great. I got the isolation valves and a pump and bucket. It takes me about an hour, every six months or so. Very cheap. The plumber wanted $500.00. Yikes!
@@warrenb2856since you don’t have isolation valves, investigate using food grade SHMP (Siliphos) as a way of disrupting calcium and magnesium crystallization inside the tank. This is done extensively in industrial boilers. I don’t know why more plumbers don’t use SHMP on the cold water inlet on all homes with high mineral content. Guess they would prefer to install a whole house water softener instead.
Was very glad to see your final minute. The (major) manufacturer of my 4-year-old tankless water heater specifically warned against using anything but food-grade white vinegar, 4 gallons in a 5-gallon bucket. Using harsher cleaning chemicals can void some warranties, not to mention presenting potential health issues if the final water flushing is inadequate. Some people use hot tap water for drinking or cooking...why present them with this risk? I flush my heater annually with vinegar (food grade @ 5% acidic) at a cost of less than $20, and it is safe.
What I did not see addressed was an installation like mine where immediately below the water heater and in-line with the cold water supply is a thimble-sized water filter that needs to be removed and cleaned after every flushing...or more often if your supply water is unfiltered or otherwise prone to have fine debris, sand, etc. Recirculating "contaminated" or particle-heavy cleaning solutions is asking for such a filter like this to clog and fail. The typical homeowner is then stuck with having to call a plumber to remove and clean the internal spinning flow-control device needed to inform the heater of flow demands. Fouling the filter would be a major whoops.
agreed, I do this for a living and there is so much wrong with this presentation, food grad vinegar, cleaning the filter before flushing the unit, checking the flow, I could go on and on
@@ajslam41 you should go on...
Fantastic instructional video! Ordered the pump and washing machine hoses from Amazon, used distilled vinegar. I also added an old sock attached to the discharge hose to prevent sediment from running back through and flushed for two hours. Saved a bundle. Thanks again!
Kory M. I hope the old sock doesn't make your water smell funky... Thanks for watching and commenting! I do appreciate it!
Awsome if made video on your technical flush.
I don't see that he shared which pump to buy? Do you mind sharing what you ordered?
@@davidgeske9715 0:56 explains it's a haymaker product
You can also add a garden hose filter screen into the coupler at the end of the hose that connects to the hot water outlet. That way any particulate doesn't go through your pump, potentially damaging it. I got a dozen of these on eBay, I think. They were actually a rubber garden hose washer with an embedded stainless steel screen for not a lot of money. Good to add to any hose that provides water to a machine, like a pressure washer.
Wow!!!! Roger, I am a C10 contractor and I am going for the B License, you are a really good Business mentor, the best videos I ever watched, thank you .
Thank you. I appreciate that!
He gives that warm and fuzzy feeling .Great mentor !
Watched several videos on this subject. You were best at covering ALL aspects of cleaning a tankless water heater. Especially adding the comment regarding vinegar. Natural products all the way!!
@Bugsy thank you so much. Did you flush yours?
And.....here’s some tips also, when you’re flushing a tankless, after about 15 mins of cold flushing, turn the unit on and get it hot, shut your outlet valve off and let the pump run and pressure up the exchanger and let it soak for 15-20 mins. While the exchanger is soaking, go around the house and pull off all the shower heads and faucet aerators and throw them in the bucket of hot solution, clean them with a brush if necessary. These tankless heaters rely on good flow for steady operation so if any jets are plugged in shower heads or aerators you may notice inconsistent temperatures. Pull out the inlet filter and clean it, re-install it. Rinse the unit with a hot rinse into a nearby floor drain preferably, turn the hot outlet back on and run tub tap for 5-10 mins. And if you’re a licensed plumber and gas fitter like me, clean the burners, replace igniter and sensor, check and adjust gas pressures as specified on rating plate. You’re welcome.
This was very useful and I followed it step by step to flush my tankless. So thanks!
A few things that could have been better:
- tell me to fill a bucket with water before I turn off the water, man! Haha
- there's a bunch of "oh don't forget this" after you've told me to do it. It would be better if it was all in chronological order so I didn't have to watch it all the way through every time. I had already watched it all the way through a few days ago to decide this was the video I was gonna use.
Thanks again!
I am a new HVAC tech and I really enjoy your videos to see how the plumbing side goes. Since we do tankless and tanked heaters it is always nice to see how someone else does it too.
I just had a tankless system installed this very day. The plumber told me that I should rely on 'them' to do the annual maintenance at a cost of $250 a pop. Thank you for showing that it's relatively easy for someone with moderate skills to do this on their own.
my gas company does it for $80.00 but I just bought a pump and the washer hoses and 3 gallons of vinegar, gonna do it myself.
What do you do for a living?
Thanks for the video, a lot of great comments also, everyone appreciated the video .the main things I liked about it not just a fact there I can clean my own water heater out ,its the fact that he didn't spend 15 minutes Explaining himself away ,,he got straight to the point and the video was done and now i can get to work
We have crazy hard water and a new 2.5 year old build with a tankless water heater. This winter our tankless heater kept losing flame and lately has had terrible pressure and takes a significant amount of time to "warm up". So I just ordered all the stuff I need to flush it since it hasn't been done yet. Unfortunately, our builder was cheap and it was installed with no flush valves so I'm going to have to add those myself. Thankfully I'm handy enough to know how to do that kind of stuff! Thanks for the guidance, looking forward to our tankless being back to normal!
Again! I tried without watching this, then watched it to make sure I wasn't doing anything wrong. Always fun and informative to have your help. Many thanks!
The Rinnai tankless water heater in our daughter's house was so clogged up with solids that it had stopped working entirely. There was not enough flow through the heat exchanger, so the logic board would not turn on the heat.
I flushed it for 45 minutes with one gallon of stronger 9% vinegar, and it was so green that you could no see two inches down into the bucket. I threw that vinegar out and then flushed in the opposite direction with another gallon of 9% solution.
Then after rinsing it out, the heater now works perfectly again. Thanks Roger!!
Glad you got it working!
I use a Home Depot bucket with two garden hoses and I taped a pond pump on one end and run vinegar through it for a couple hours. Works great!
My system has one (cold) shut off/close water supply, must videos show a shut off/close valve on the hot as well. Your explanation of using the service valves over the flush valves kept me from pumping vinegar through my lines. Thank you
Roger i love this video this is a spot on for all that don’t know how to flush tankless water heaters …… i see that you didn’t talk much on the Vinegar trick which i teach it to the guys but i had a issue where one of the tech didn’t know the mix. Would love to see a video touching up on this……. Keep up the videos bro.
Annually cleaning these hot water heaters is a "tankless" job, but a necessary evil. We had a new home built 4 years ago and it has this same exact Rannai tankless hot water heater. Our building contractor did actually inform us of this annual maintenance during the walk-through orientation. I flush our hot water heater every July (our anniversary move-in month) with 3 gallons of white vinegar, a 5 gallon bucket, two 6 foot steel braided washing machine hoses and a submersible pump that I purchased on Amazon. The local plumbing contractor told us to turn off the gas and power during flushing, but I have heard of people also leaving them on, so I am not sure if it really matters either way. Luckily, we also have a garage sink right next to the hot water heater, so this makes this annual flushing procedure really easy. I follow all of the procedures shown here and let the pump run for 90 minutes. We have VERY hard water where we live, and this annual flushing seems to keep the hot water heater (and faucets) free of scale. Also, before AND after flushing, don't forget to clean the mesh cold water inlet filter. It is behind the little black plastic cap directly below the hot water heater housing. This filter also fills with calcium and other mineral deposits, and will restrict the flow of water into the hot water heater if it becomes clogged. Make sure you flush the hot water heater, pump and hoses with clean water after flushing. Vinegar is acidic and very corrosive to certain metals. This well help the pump and hoses last many years. We really like our tankless hot water heater, but don't believe all of the money savings hype. From our experience, there is really no difference in cost between running a tank and tankless hot water heater. The advantage of the tankless system is that you will (almost) always have an endless supply of hot water on demand and multiple showers can be taken simultaneously. The "Almost" comes when the power goes out. The tankless hot water heater requires electricity and gas to work, and there is no 30 to 50 gallon reserve tank to store hot water. This annual flushing is a really easy procedure, and doing it yourself will save you anywhere from $100 to $150 by not calling a plumber to do it for you. Have fun folks!
In Chicago one company said $400 a year for flush descaling. If there was any savings, thats out the window.
@Sargon Oshana Yikes, $400!? What a ripoff! The flushing procedure is so easy to do yourself. It sounds like the local plumbing contractor is really price gouging people for a very simple job. You can buy (one-time purchase) the submersible pump, 5-gallon bucket, and washing machine hoses for around $75. Then, 3 to 4 gallons of distilled white vinegar will run about $10 annually, if that. The entire flushing procedure takes 60 to 90 minutes, and you can't overdo it, so it's not like you (or the plumber) has to stand there and monitor the process the entire time. The alternative (depending on the water hardness in your area) is not flushing the hot water heater and shortening its life span immensely. At that point, you are looking at about $1,500 to $2,000 to replace the unit. Probably much more in your area. As I said in my previous post, all of the money savings hype of a tankless hot water heater is a myth. The good part is an endless supply of hot water that never runs out. The bad part is no electricity, no hot water, as the tankless hot water heaters have no storage and require electricity to run the ignitors and exhaust fans. Good luck!🙂
My favorite tool those 428 Channellocks.I worked there once shovelling pliers with a pitchfork and pulling sledge hammer heads from the oven with a 12' steel pole.
Good job brother. I'm a Master Plumber and luv yr channel. I have never tried letting yr w/h run while u are flushing unit. Ty for the tip.
No problem! Where are you located?
@@RogerWakefield I'm in Harper, close to Fredericksurg.
I just paid a plumber 285 bucks to do this......how ridiculous. new construction so I'm tankless, this will save me in the future, thanks!!
Roger keeping America strong, awesome info. Saving people a lot of time and hassle
Thank you for all the work you put in for showing us how to do the work and why we do it!
- An Apprentice Plumber
Jorge Coronel I love plumbing and I really enjoy teaching it to others. I hope you learn well. How long have you been doing it?
Another fall season comes and here I am cleaning the unit. Always feel confident with your help. Thank you so very much! 2 thumbs way up, if I had more thumbs you'd get those too!!
Glad I was able to help! Thanks for the kind words
@@RogerWakefield is there a diy kit for a homeowner that you would recommend?
Excellent video, thank you! I personally would not leave the unit on when flushing. heating those chemicals, heating the hoses.... it's putting potentially a lot more problems. i just read in the rinnai manual recommends shut off of heat or warranty could be voided.
I read the same thing. I don’t get it when many you tube videos tell you to leave on, but turn down the heat to 98 degrees. To me it makes more sense to leave on for a better flush and the fact the water will be warmer and better for the flush. Any advice?
thank you.. am considering going tankless and heard this was necessary but no details on how. Great video. Now I know if we do this we should have those extra valves
Thank you very much for sharing this knowledge. I am purchasing a new home which comes with a tankless and was wondering how to maintain it.
Thank you. I do this every Daylight savings change. This will be my second flush and I WILL flush with Vinegar for 90 minutes.....
Don't forget to mention, some homes use a recirculation loop so that you have hot water sooner at the faucets, some tankless water heaters have a recirculation pump internal, some you have to install an external pump, either way if you have a recirculation pump and a loop, you need to turn that off with a valve (isolate the loop) or you'll be flushing your loop and pump with the cleaner (vinegar or haymaker product whichever), and you'll need more solution because you're flushing your loop out too which many times can be large enough to hold multiple gallons of water.
the isolation valves are closed I dont see water going into the system at all?
Excellent video, thank you!
okay, okay, I get it... I went downstairs and did it. at this very moment it's still pumping vinegar through it. I have been neglecting it for 5½ years now. yes, I know it's supposed to be an annual thing... =) thanks for the reminder!
Dave Thompson I hope you will come back and let me know if you can tell a difference. Thanks for watching and commenting. I hope that you subscribed!
Thanks for the tip I’m not very familiar or comfortable with tankless systems yet but hopefully in time I will. A huge thanks from apprentices everywhere 🤝
Thank you sir. I help with maintenance on several newer townhouse apartments, and they have an all Electric Tankless Water Heater and have one that is not staying hot when being used.
Roger, your video is very easy to understand , you voice is clear. I like it !
Nice review. Went to tank less and never looked back. I received the same recommendation from local plumber on use of vinegar 5% food grade verses de scaling agent. First time took about 2 hours and was told leave unit off. We have "hard" water and clean ours every year, some have said I don't need clean every year? It seems $7.00 of vinegar is cheaper then ruined heating elemets, yes our is electric.
nice video - makes the process easy to understand. it's 2021 and i'm having my plumber replace my 20-year-old hot water tank with a Rheem tankless hot water unit next week.
One reason I like the Nivean tankless is because it's one of the only water heaters that have stainless steel innards. So it works great with hard water, etc. I have now had it for over 10 years and it works like a charm. It comes with a metal filter that I take out and reverse flush the water (let it just drain out from the how water side). No problems at all.
Allowing water to drain out the hot side does not do anything unfortunately and with your unit being over 10 years old with no descale maintenance I would not advise descaling the unit because it could cause a potential leak to happen with the heat exchanger of the unit.
Thank you for this. Just saved me $200 by doing this myself!
As always I did enjoy your video. You always make everything easy to understand. If I'm ever in need of reminders I just flip out my phone and refer to your knowledge.
I would recommend to find a plumber that not only flushes the tankless but offers during the service to remove the exhaust fan and clean out the buildup on the blades, and also opens the gas burner section and blows that area out too. Exhaust fans have to move a certain amount of air, and if it doesn't do so because of dirt/dust build-up on the blades the CFM sensor will shut down the unit and throw a code. Flushing is only part of the service. Also, I recommend once every 4 or 5 years, dependent on your water source/qaulity. If they are trying to tell you to do this every year then they are trying to milk you for more money.
Thank you I live off-grid and my shower is gravity-fed this was the perfect thing to help me clean it out I use vinegar cuz that's all I had and it worked I did go from the out spout to the in spout after disconnecting everything because I knew whatever was blocking it was near the end spout so I went backwards and it worked
Nice DIY tutorial! I managed to did it myself for around $100 wheres all plumbing company quoted me for around $300.
Nice work!
Great explanation. First I've heard leaving the unit energized. I'm going to do that! Thanks!
Do you recommend cleaning the screen on the tankless when descaling as well?
Thanks for the video, looks easy enough. I just ordered the kit needed to do this, should be here in a couple days.
I can tell you I did not know this needed to be done. I have been in my house over 5 years now and the water heater performance was not very good.
I paid a company to come out and do the flushing they flushed the tankless heater and my wallet
just over $189 Canadian + tax, about $145 US. Money well spent though, big improvement in the performance of the heater.
A flushing may be all your water heater needs to get back to producing the hot water you want
After watching the video and the guy do the job in my house I think it is a job that most home owners should be able to handle. Just need to get the equipment, Amazon !
What’s pump your used it and where can buy it? Thanks so much and appreciate your sharing this video.
Thank you for filming this. I very much appreciate it
Brian Ralph did you flush yours? Fantastic! Thanks for the feedback...
What a well made video. Very thorough and informative. Thank you, sir!
Lando G we are trying to teach people how to do things that can save them money. Where are you located? What do they charge to flush tankless water heaters there?
@@RogerWakefield i'm living in a new developement in hawaii. Companies here are charging 700 on the low side and up into 1000 on the higher side.
@@RogerWakefield FYI - I just paid $840 for a flush w/ white vinegar in the Seattle area....compare that to the December 2010 total cost of removing my old tank heater, and installing a new tankless for $2450...glad I now know how to do this myself!! :)
Thanks I will be doing this next weekend. Took me awhile to find a good video on this.
Great video ...thanks for the advice and thorough instructions
You bet
This is a real Texan. Great video Roger. Really appreciate it.
Plus you can tell it's Texas at the end by the color of the grass (or the lack of color, lol)
Great video Roger! Thanks so much.
Great video! I have 2 tankless WHs at a rental duplex that I flush yearly with vinegar.
Hmm, my manual said power should be shut off first, like at the control panel? I also learned yearly maintenance includes cleaning internal parts, checking vent, flame, pressure relief valve, lubrication, etc. and recommends a licensed pro. One mistake could be trouble so, I think I'll watch a pro do it before I try.
Your voice should be use for reading books is very relaxing
Using vinegar, cleaning the filter, and turning the gas off during the flush was how I was taught to flush tankless water heaters. We would also take the front cover off to blow out the combustion chamber with an air compressor to get out sediment left over from years natural gas burning. Inspect the heat exchanger and just clean the inside of the unit. Really help with outdoor tankless unit to get bugs and other crap out of the inside of the unit. But watch for wasps lol it was and a good 90 minute plus job.
Sir you have alots of knowledge for this work i always watching your videos it's really help my work .thank you
Glad I could help, Zafir
@@RogerWakefield thank you sir ) you are nice person 🤩
I the tank man in my neighborhood. 75.00 created my own little business. Our water heaters also have a small screen filter that i remove to check for debris or calcium build-up
Got my tankless back when they did not flush them (90s)so I do not have the hookups for that. I do have really clean great lakes water so it is still going strong. Only issue, was one time after a 2 week vacation, the water flow sensor stopped spinning and had to be opened and spun. I learned that day that even 1/4 turn ball valves leak (main and at heater) when turned off.
I do wanna mention when working on a noritz tankless unit theres actually a wire for flush you have to plug in and you have to leave the unit on, it has a clock built in and every flush has to be done for an hour minimum, if you need a warranty claim they look in the log of the unit and check the cleaning schedules.
Really appreciate your video. I had a pretty idea of how to do this, but I learned a few things off of it. About to flush mine for the first time.
Excellent video, clear and concise. Thanks!
Gordon Evans I am normally as clear as mud. Thanks for watching and commenting! I do appreciate it! I hope that you subscribed!
Thank you. From cleaning DE pool systems I learned you clean "backwards", so why does this clean "forwards" from in-out?
I don't understand why it makes any sense to leave the unit power on. The gas is disconnected so how can the heater heat up any solution or vinegar passing through it?
Hi Roger, it is a very good and informative video. What kind of pump do you use in the video? Rinnai said the pump should be 4-5 gallons per minutes, what kind do you suggest that is not too expensive. Thank you.
Hello and thank you for the informative video I purchased a flush kit for my tankless water heater and quickly realized one end of the flush kit has a threaded side the other side is just smooth so how am I supposed to adapt that to my threaded lines that go to my water heater..?? Thank you kindly 👍
Great video thank you! Any link to this pump and chemicals used? Does it come in a kit?
This is a great easy to understand description of flushing a tankless water heater. Thanks Roger!! . . . and I do use vinegar and leave the pump circulating for two hours. Peter Castaldi
Appreciate this & others. Clear, Precise, Proffesional video. Business Owner myself Absolute Water Consultants, Fl. 💧 Enjoyed watching (Correct) information shared. All to often wrong informative / incorrect information is instructed! Nice Work!
I am installing a tankless and need to know what the valves are that I need to install to do the flushes in the future.
Man thank you so much!
You could simply turn the heat down for safety to avoid burn risk during the flush. Mine has a digital display with buttons. Easy.
Thank you for this! How much of that cleaning solution do you use with one gallon of water? Just bough everything from amazon, I think I got the right solution but could you provide links? Very helpful video.
Great video,I have used vinegar before,& its time to do it again. I use a dc bilge pump,same set up as your electric pump.pump was here so I Plummed it & just let er go! Just refresh my set up watching your vid.quick ques,just recently kids noticed water gets cold for no reason,(Rheem tankless) temp on display shows 120,& no error codes,I go full hot on shower valve & heat comes back up. That's why I'm cleaning it but I'm wondering if a flow valve is going,thoughts?
The chemical de-scaler seems to be the better choice due to the longer flush time and volume of vinegar. Plus, wherever you end up dumping the vinegar, its going to smell like the Olive Garden for a while.
I had a tankless system installed back in 2003 before many knew how to take care of them. I have no "Flush valves and the installers now won't do anything with these units unless they installed it. The company that installed it is long gone...any ideas?
Wayne, thank you for sharing your knowledge and experience. A great help for what I am about to embark Thank you, stay safe.
Who’s Wayne?
@@idontmindpineappleonpizza8825, your right😂. My apologies Roger, sorry was viewing several other videos and don't know why Wayne stuck in my head. Thanks for the heads up, be safe. FYI, I was able to complete the process without difficulty, great help.
What do you do with the descaling solution after it's done? Can u pour it down the drain?
Thank you!! Broke that down in Laymans terms🙏🏼
doing the happy dance!!! thank you for helping me, tackled it and got it done!
VERY IMFORMATIVE VIDEO, THANKS MUCHO!!
Can I flush it for too long? Would that harm it? Like, would 5 hours be too long?
Thank you , I needed this
Good! I'm hoping it worked out for you?
2-3 gallons of vinegar is all you need. No secret chemicals needed.
Exactly this dude is a joke
What does he mean he likes the way that one’s done obviously he hasn’t done tankless heaters in the past or he would know that is called a plumb kit.
I use 10% vinegar on my Noritz. An yes on a Noritz it has to have power to open the valves inside. You have to turn off the gas first, run some water through it and wait for it to go into a "No Gas" code. Do not reset it until after the cleaning.
Roger do you recommend pre filters on a tankless to help cut scale build up , southwest we have high alkalinity cruds up flow sensor in about a annual interval , heard that spreads cleaning to about 3 to 5 year span , thank you for good video .. 👍💪✌️🤔
investigate using food grade SHMP (Siliphos) as a way of disrupting calcium and magnesium crystallization inside the tank. This is done extensively in industrial boilers. I don’t know why more plumbers don’t use SHMP on the cold water inlet on all homes with high mineral content. Guess they would prefer to install a whole house water softener instead.
Basin wrench works better for the washing machine supplies I've found esp. when they are fossilized.
Omg I had no clue this was a thing until it was recommended to me today
I'll so do it
I am not sure about tankless wh installation im not plumber . but it should have at least a check valve after the shut off valve just in case the shut off leaks and possible causing cross connection , since substances are being usage. internal protection for H.O might be use .
Should i descale my electric tankless water heater as i was told by a local plumber that he never heard of descaling an electric tankless water heater only done if its gas?
Why would you use a chemical and not simply use vinegar? Marketing?
Kept watching and you answered my question. The acidity doesn’t need to be that high to make that stuff crumble and flake off.
Try some vinegar on a calcified tea pot to get a visual representation of how well it works.
Thanks for the content!