Navien Tankless Cleaning Water Heaters Now

Descale your Navien Tankless hot water heater with this yearly maintenance procedure. Ray from Water heaters now will walk you through the steps to keep your water heater providing hot water in your home for many years.
For more information, check out some of our blog posts on tankless units:
www.waterheate...

[@brettbarker9394]

I'm a licensed plumber in Canada, and I just have to say I have so much respect for this person. An honest plumber is hard to find nowadays, and to find one willing to help instead of gouging the customer. That's a game changer. Keep on doing what you're doing, you're doing the world a much needed service and keeping the scummy plumbers away at the same time. :)

[@benjaminvalencia4228]

I can't find a Sump Pump that takes Clothes Washer hoses, do you know of any?

[@tonynguyen5362]

@@benjaminvalencia4228 I used this sump pump to clean my Navien 240A from HD, 1/4 HP Submersible Thermoplastic Oil-Free Utility Pump by Superior Pump Model #91014

[@seanh2390]

@@benjaminvalencia4228 Harbour Freight sells the pumps in the US; Princess Auto (and likely Canadian Tire) sells them in Canada. Just search for a 'submersible utility pump" and make sure it has a garden hose adapter at the top.

[@calimilk1113]

Yes , totally agree, nowadays most are like car mechanics

[@hollywood21639]

@@benjaminvalencia4228 clothes washer hoses are the same thread as garden hose. FYI

[@camillecosta530]

I did it! I did it, I did it! Watched your video about 50 times and was able to flush my tank and not blow up the house or break anything! Feeling so smart and accomplished and $200 richer! Thank you so much!❤️❤️❤️❤️❤️

[@leahespeleta5734]

Me too me too I watch this video o God knows and finally master it so happy happy widow my late husband is so proud of me right now ❤️. Last week my navien leaks called plumber $110.00 service fee right away parts is $47.00. Check Amazon parts was $34.00 now I know how to change it plumber won't be coming to my house thank you for this guy Ray.

[@erniecollazo3849]

😂

[@erniecollazo3849]

😂

[@bluwng]

Same except the second year I flushed it backwards, didn’t hurt the system but it did flush more junk, I suppose it was hidden debris that would not release if flushed the standard way.

[@georgescott4550]

Clear and to the point with excellent camera work and audio. Whoever put this together ought to be teaching other people how to make instructional videos.

[@unindoji]

Amen to that

[@unindoji]

Given that this video is 5 years old...speaks volumes.... I couldn't just give a thumbs up and walk away. I gave a thumbs up to another video Ray did on servicing the Navien....but it wouldn't allow for comments, so I thought I'd just comment on this video since its essentially about the same topic. Ray - your videos are absolutely game changers. You explain things so well, I feel like I'm working for Water Heaters doing OTJT! Everything you covered was so thorough, it saved me quit a bit in service fees. If you guys were local in town to the Houston area, you'd be my plumbing company of choice, hands down. Thank You for a great PhD in tankless water heater maintenance!

[@rtaj80]

We just used your videos to clean my Navien for the first time. I was intimidated, but we got it done. Thank you for providing such clear and directive instructions in your videos, and for saving me almost $500!

[@WayneBaillie-in4ko]

This was an exact replacement for the old one that lasted about 10 years. kzbin.infoUgkx7yWIKcrbA9KMHkGSfcgxW2lsjHT6B8Sh The top of my mitigation tube by my roofline was just a 90 elbow which allowed too much debris to fall down into the fan, eventually ruining it. Without this issue, I bet it would have kept running another 10 years. When I replaced this fan, I added an extra elbow joint so the top tube now it does a 180, which should solve that problem. The radon guys around here wanted to charge me a $300 diagnostic fee, then parts/labor (probably close to $600 total). I installed this all by myself in about an hour for the cost of the fan; it would probably be even easier/faster with two people. FYI the manufacturer's warranty greatly differs depending on whether you install it yourself (1 yr warranty) or have a licensed installer do it (10 yrs).

[@shaneadventures677]

One of the best 11min spent in my life seriously..

[@PhantomGett]

I literally re-watch this video once a year when I flush out my water heater and I appreciate its existence so damn much.

[@calebmckissick2914]

Best tankless service video I've seen on the web, HANDS DOWN, and I'm a licensed plumber. Nice work!

[@ellenfarrell9763]

You are the BEST!!! I wish I had had your company install my heat and hot water system. The company I used has ripped me off royally. Thanks to your video, I just got my heat and hot water running by myself in the middle of winter on a holiday weekend. The company said they couldn't come until tomorrow with temperatures going down to the teens overnight. I just saved over $600 dollars! It is SO nice to see a company that cares about their costumers and don't rip them off! It is so rare these days.

[@elizabethwatt8131]

This gentleman has provided a fantastic ‘how-to’ video. Every step is performed perfectly in order. There are other videos out there, but this is the best. Take notes or watch this video on your iPad and do as he does, pausing the video as needed. You can’t go wrong. Each step is explained at the proper time in the proper sequence. No cover is replaced or power switch turned on, until it’s time. It is my favourite ‘how-to’ for flushing my Navien water-heater.

[@jamesshirley2847]

L Look

[@nmutz8165]

Did my first flush today and am so grateful I had this video. Thank you for making such a high quality, detailed video. Fantastic job!

[@paulr.williams2394]

Great video - thank you! I would like to add a couple of critical additional pointers that were omitted from your tutorial: 1) If there are multiple units running in Cascade mode, before flushing, you MUST FIRST take them out of Cascade mode, by doing the following (If you do not do this, the Cold Water service inlet will not allow water into the unit and your pump will be dead-ended): - Turn on all water heaters using the Power button. - On the master water heater, press and hold the Diagnostic and Reset buttons for more than 5 seconds. The water heaters will revert to independent operation. Then, turn the units off and they will be ready for flushing. - After flushing and maintenance are complete, turn on all water heaters using the Power button. - To reinstate Cascade mode: A. On the unit you intend to be the Master water heater ( I rotate mine every year), press and hold the Diagnostic and Up(+) buttons for more than 5 seconds. “MA.00” will appear on the display to confirm that this water heater is set as the master. B. On the slave water heater, press and hold the Diagnostic and Down(-) buttons for more than 2 seconds. “SL.01” will appear on the display to confirm that this water heater is set as a slave. C. Repeat step 2 to configure the rest of the slave water heaters in the system, i.e., "SL.02"... D. On the master water heater, press and hold the Diagnostic and Up(+) buttons for more than 5 seconds. All the display screens on the configured water heaters will return to the temperature display. 2) If you are using External Recirculation, don't forget to clean that Recirculation Inlet filter in addition to the Cold Water Inlet filter (they are exactly the same filters). 3) After draining and before flushing, DO NOT FORGET to move the lever on the Safety Relief Valve back down to its normal operating position! I learned this mistake the hard way, after I had pumped 5 gallons of vinegar into the drain because the safety valve was still open!! DUH LOL!!

[@void__star]

I've read over the Navien instructions many times, and I swear it doesn't mention cleaning out that dirt trap. I didn't even know what it was. Well, I did as you showed and wow, it birthed a nasty puddle of dirt and water into my bucket. Thank you for bringing this to my attention.

[@TheCbdudek]

I have been referring to this video every year for the last 5 years to maintain my Navien. Best investment I have made to my house. Ray, I hope you are still with the company because you deserve a raise!

[@michellehoyt603]

You have explained this so thoroughly. This was extremely easy to accomplish for this stay at home mom on a budget!! Thank you!!

[@bradcard423]

I watch this every year as a refresher just before I do this to my Navien °T-CREATOR dual unit.

[@R1Armadill0]

Performing my first flush. This video was immensely helpful. Maybe it's been updated, but I found I did NOT have to unscrew the vent pipe to get the top filter out. Just the screw holding it in, and it popped right out! Good Stuff!

[@Hall7180]

Same with my unit, no top screw for cold air inlet filter. One less step 😄.

[@user-uh5hf4qx5g]

@@Hall7180 Yeah it seems a few items have changed. First, that air filter doesnt point straight out the unit, it points toward the front right corner and you only need to remove the horizontal screw that keeps the filter in place. Secondly, the dirt/debris trap in the middle is no longer circular, instead is now a very long, rounded edge rectangular piece. Otherwise it's all the same.

[@sethmolenaar1801]

Called a plumbing company and they wanted to charge me $250 to descale my navien. I really like this plumbing company as they always do very good work, but in this case, I’m glad I held off and decided to see if I could do it myself. This is easy stuff, the only thing you need to get is a submersible pump. Those go for $50. 2 gallons of white vinegar = $10. So my first go around I will already have saved myself $190. And cleaning after that, I’ll keep $240 in my pocket. And all because of this video! Thank you for putting this on.

[@bsharn3927]

Thank you. A plumber told me that they use a special chemical to clean the tank and it will cost me $600 each year. This video has saved me my hard earned money

[@Kelekona_808]

Thank you for this video! I'm about to have one of these Navien 240S units installed and it is great to know that there is a simple and complete guide I can refer to for regular maintenance of the unit. Your guide has given me the confidence to do the maintenance on a unit that hasn't even been installed yet.

[@NaomiM-ck6yb]

So thankful for this How-to video. I was promised an initial flush from the Navien retailer I purchased from, only to get a verbal How-to, when he was doing something else. For someone who has never done this before, a verbal talk through is certainly not sufficient for me. I wish all company's held your standards! You made cleaning my water heater successful and easy. Thank you!!!

[@dougtapper7759]

Thanks so much Ray. This is my second year flushing my Navies heater following your instructions. I appreciate the DIY video, saving me the price of a service call for something I could easily do myself.

[@Dlwinborne]

Ray, THANK YOU for this easy to follow instructional video. I purchased a flush kit, complete with descaling solution, hoses and sump pump. It was very easy to do, following your video and I have placed a reminder in my calendar for next year to repeat the process. I called a plumber who wanted $475 to do what cost me $140 to purchase the kit. Peace and blessing to you!

[@vstar7196]

One of the best “how to” videos I’ve seen. And highly commendable that this company is straight up and honest. Too cool!

[@joonchung7078]

I just finished heater flushing by your instruction. I saved $200+ because of you. Thank you.

[@kevinperry5672]

I just purchased a Navien Tankless hot water heater today and was a little nervous about having to descale it on my own, but this step-by-step video is awesome! I've already entered the date on the heater when it was installed and when it's due for maintenance one-year from now. Thanks so much for this video!

[@JimVence]

I've self-serviced my Navien these past four years, based on this well-done explanation of the maintenance procedure. Thanks!

[@hamishahern2055]

seriously, how hard is to flow through a system, can't believe people even need a video for this, rofl.

[@chrisdonze3097]

The instructions made it seem so much harder than how this guy explains it. Thank you so much for taking the time to do this instructional video!!!

[@rickygreer498]

I think this is the best video for" how to '" on youtube period. I'm a retired General Contractor and do all my own work with the help of youtube, so I watch plenty of videos. Thank you !

[@evansevans8022]

It shall be well with you and your family and your entire workers for this great help to the teeming public looking for help of this kind. On the 7th of Jan 2022 I woke up from sleep to my heater not working anymore. And I don’t have even $50 I could give to anyone coming to repair. I did everything I could do with one of my good neighbors but to no avail all the night. I went to sleep and woke up on 8th of Jan 2022 at 11 am and followed all your instructions here and my heater came back to life. Many thanks bro for your immense help. I live in Edmonton Canada 🇨🇦.

[@ray3172]

You saved me $250.00 and now I have invested on a water pump to do my regular maintenance. Thanks again!!!

[@marylyons2422]

I watch this video once a year when I clean my water heater. The company that installed mine was great and did a wonderful job of installing my Navien and explaining how it works. But they do not explain how to descale it because they charge a lot of money to come once a year to clean it. I've never had to pay them to do that, thanks to this video and the purchase of channel locks. Thank you!

[@cordevfox]

You are awesome to do this for your customers and you saved the day for me when my Navien just stopped sending hot water - your steps got it back and running again!! Thank you!!

[@michaelfahim5878]

Just cleaned mine on a new construction house after 3 years. And I was expecting for the vinegar to change color like I watched in another video, but it stayed the same color. For context I live in the country on city water just north of Spokane. The dirt trap was dirty and the cold air filter had like three dead bees. The cold water intake filter was clean as well. Thanks so much this video was amazing step by step guide.

[@MrCastr8]

Amazing video! Great angles, the instructions were explained so that a kids could do it! I look forward to watching this yearly! Bravo!

[@peteschardien3115]

Great video. I never knew I needed to do this until today. I have (2) Navien tankless heaters in the house & they’ve been in operation now for about (6) years (since Hurricane Sandy). I imagine they need some attention after all that time!

[@Rayman-expertsoundpro]

Totally awesome. Got my Navien installed yesterday and the company offered a $250 maintenance plan and gave me 30 days to add it. Crazy stuff!

[@The_Drei]

Thank you Ray for the detailed instructions. It was easy to follow. The first time it was intimidating but this second time this year it was much easier.

[@jackmarks4491]

OMG - saved me hundreds of $$$. Sure I bought I pump for $79 but moving forward no cost involved. My showers were becoming like the old hot water days of half the shower warm the other half Luke warm even with tankless. Followed his step-by-step and system is operating like day one install...endless hot water! Great job and THANK YOU!

[@ItchyKneeSon]

Thanks so much for this FREE tutorial! I've now performed this twice in the past year after experiencing warm water with 'hot' turned all the way up. We were able to survive a few days by 'tricking' the system--we'd run 2 faucets when we wanted hot water from 1. The whole process can take about 1.5-4 hours, depending on your skill, availability of tools, and access. We used a non-submersible pump from Harbor Freight both times. It's just a matter of matching up the correct fittings...

[@red8723]

Ray explained this better than all the others on you tube. I did see some galvanized plumbing on that unit. I hope it has isolation spacers placed or corrosion cell could form on the unit. I like the way the plumbing on this unit is spread out wide, makes it so much easier to get to all the valves. Thank, Ray awesome presentation.

[@originaljoshuabryant]

Worked great! My dirt-trap came off with an o-ring, it was stuck up inside. I took a little flat head screw driver and pulled it out (used a reverse video on my phone to watch what I was doing). ALL 3 filters were filthy, hadn't been serviced since installation 3 yrs ago. Back to normal high flow hot water.

[@michaelriter7128]

Thanks Ray for posting this instructional video. My contractor never said a word about annual maintenance on my water heater. 6 years in, I could tell that the unit was not running efficiently. With the descaling, we have noticed a marked improvement on how fast hot water is available! Easy to clean and maintain. I’ll be doing my neighbors water tank next, since she has the same unit that I have. Best Regards to you and your team!

[@charlesking678]

Am a plumber and this video is a excellent step by step video on tankless maintenance.

[@156chanty]

I never leave comments but THIS video and this guy deserves it! Thank you so much! This is the most clear video I could find on the subject and I watched quite a few before I found yours! (I found the one from last year first and then this one). Thank you for being so helpful and so thorough!

[@marylyons4612]

This video makes me believe I can do this. Very clear, to the point. Thank you for having someone else film it so that I can easily see what you're doing.

[@rollya4635]

This is my 4th time using this video to clean and service my NAVIEN Water heater. I appreciate so much the clear and concise information in this how-to video. I totally agree with one of the other comments, that you should be teaching others how to make instructional videos... THANKS

[@javier2surf]

Clearest and best service video I've seen on a tankless water heater. Just saved 300 bucks!!!

[@LittleTut]

True! Had my tankless unit going on two years (house remodel) and this morning got error E016, which I Googled and found filter needs cleaning and heat exchanger. I did unplugged for 30 min and plugged back in and unit working good. But I see I will need to service, MY SELF! :) Save me some mula! :)

[@hughcavallaro5822]

Great video, thank you. A few things I did after I was finished with the flush. #1, I took the used bucket of vinegar outside, and before I dumped it out on the ground , I neutralized it with a cup of baking soda , and poured it out where there were no plants close by. I didn’t feel comfortable pouring it down a drain into my septic system. # 2, I rinsed everything thoroughly with water that had come in contact with vinegar , including hoses, pump, and tools. # 3, have an old towel rag near by when you are doing the flush, because you will get some water or vinegar on the floor.

[@phairlyoddparent3972]

I just got two Navien water heaters installed and this is exactly what I needed! I’ve seen some other videos on the subject, but none as detailed as yours with showing the various filters and traps. Thanks a bunch! 👏🏼 👏🏼 👏🏼

[@dbogmaw2138]

Thank you for this video. I paid the plumber to do this service twice, what they charge is more than what i want to pay. My son and brother did this simple maintenance with me referring to this video when we weren't sure. It is so simple but my tank is outside mounted on the wall. If i had to do it again i would never install it outside. The cold water pipes will freeze and all it takes is one time for this to happen and mine did the first two years of installation. I blame myself for dreaming on that no freeze thing. But at least it's not in the crawl space like my electric heater was. So far no more freezing but outside unless it NEVER gets below freezing don't . The only mishap was they forgot to brace the hose during the descaling and got a vinegar shower.

[@tlutrick956]

I wish you & your company were local to me, as I would hire you hands down. Too many plumbers in my town want to take advantage of me. The ones that installed my Navien told me that I never needed to service it, and they did not install service valves as you so rightly did. Your customers should be thankful. I'm grateful for your video. Keep up the good work.

[@user-hj3oy4vc6m]

excellent presentation of how simple this process is and why it is so important to do each year.........GREAT VIDEO!!!!

[@SmithsEuro]

Exactly what I needed, hard to find good info online. I do everything i can myself. I was having issues where hot water would stop for a bit, then come back without codes/system shutdown. Pulled everything apart and cleaned everything. Tons of crud/scaling. Took me a good few hours seemingly the unit was never maintained. Now heat is great, no more hot/cold/hot showers thanks so much.

[@anujpassi2751]

By watching this video it helped us to turn the water heater back. We were not getting hot water but by cleaning as per instructions it worked . Thank you for sharing and help us save some money .

[@yunro7659]

Thank you so much! I have no idea what I supposed to do this, but after I watched your video I just finished my water heater. I called water heater company they estimated around $5-6 hundred dollars. I bought from Menards pump , hoses, and vinegar spent $87 . Thanks!🎉

[@davejalenderki]

Thank you for taking the time to make this video. It shows that you really care about your customers. That is a rare quality these days.

[@JoelArseneaultYouTube]

I see that this post is 3 years old, so I don't expect this to be answered... but thought I would give it a try. I have a Navien NR-210/249A that is installed in my garage and providing hot water for the floor. It is a closed loop system and I have done NOTHING to service it for at least 5 years, except to make sure that the water in the system is topped up. FIrst off, it has been amazingly reliable and an amazing heating system... I don't have many luxury items in my life, but I consider this to be one, haha. I broke my knee recently, so I haven't been spending much time in my garage. I waddled out today and noticed that it seemed cold... I noticed the batteries in my thermostat were low, so I took them in the house and replaced them. I reinstalled the thermostat and when it tried to start up, it sounded odd. After a few minutes of trying, it gave me a code of E022 (cold water inlet thermistor 1- short) I also noticed that the water pressure in the system seemed to be really high (20-30 psi.) I thought it may have frozen, so I turned on my Mr heater that I have as backup heat. I left that on for a few hours. I returned and plugged the heater back in and it tried for a while and I could hear what sounded like water in the exhaust vent... After trying to start it 3-4 times, I shut the inlet and outlet valves off, drained the pressure off and then pulled the dirt trap off... lots of nasty black water came out. I put everything back together, plugged it in and now it seems to be working fine. No sound of water in the exhaust, it fires up and sounds normal... altho it did make a odd squealing / grinding noise a few seconds after running. I assumed that was air purging from the pumps or exchanger. If anyone has thoughts on this I would love to hear them. I will keep an eye on it and see if it keeps working or not. My biggest fear is that the heat exchanger has a crack and that leaked into the exhaust, but I would assume that that would just drain out the condensation drain thing ...

[@yurihuta8487]

Using this video for a few years now... Thank you for keeping it up. It continues to help.

[@florinsgondea6124]

Very good instructional video. Thank you . I wrote down every single step for future reference. At the beginning of the video Ray unplugged the water heater from the wall, but at the end of the video he forgot to mention to plug the Water heater back in the wall. It's a little detail that might confuse some people. Thanks again for a good instructional video.

[@FedsBoy]

I wish all DIY videos were as good and professional as this! Thanks for this!

[@danklabunde9781]

I have used this video every year for the past 5 years. What an amazing resource and so, so easy to follow. Thank you so much for doing this!!

[@manes9252]

Very nice video the best part is the o ring on the dirt trap if you hadn't told that part is so sneaky it gets stuck while pulling out and wouldn't know it was suppose to be there. 10/10 for this tutorial. Thanks

[@joespeciale5875]

Thank you Ray for a methodical, step-by-step process in this procedure..

[@tomreid3802]

Just completed performing maintenance on my Naview 240A for the first time. With the assistance of your video this task went very smoothly without any trouble at all. Thank you so much for your very excellent video.

[@Thisismetman]

Thank you so much! We bought a home with this hot water heater, had no idea how to clean it but now I do! Truly appreciate your knowledge and experience!

[@j.badinter988]

Good video. If I may suggest to flush the system with water before descaling, therefore you do not mix vinegar with debris.

[@myk2284]

Third year in a row I am using this video for my yearly flush. Thank you so much!

[@DrivinDiscoDrivin]

Your video on descaling my navien water heater was excellent. Hot water lost last night. Hot water today by noon. Thank you!!!

[@jimrap]

Just flushed my Navien tankless for the first time. Your step by step instruction is well illustrated and worked perfectly. Thanks again for a great video.

[@markwaugh2613]

I’m a master plumber and this was a great video I’m going to start descaling the tankless units I put in.

[@JeffPollastro]

Thank you so much for this thorough detail. Cleaning all the traps and filters were super important and not many other videos explain that part - those filters were nasty in just one year! There is no way I would’ve been able to do this without this video. Thank you so much 🙏🏼

[@patriciawingenfeld3508]

Thank you so much for such clear and detailed instructions. I had my water heater installed by a different company two years ago and just cleaned it out with your tutorage. Thank you very much.

[@xlntmike]

Amazing video. I own one of these heaters and thought I was flushing it right, but now know there are more filters. Thank you so much

[@martyfaust1099]

Best review yet. Clearly spoken and understandable. I got caught last year on the dirt trap because the O ring slipped off and left me in a lurch...no info on it. But now, yes Sir! Great job.. and tanks or thanks!

[@uski]

I just serviced a unit that hasn't been cleaned in probably 9 years. The worst was the dirt trap. The water that was in it was all black. Literally black. Thanks for the video, it helped and gave me the confidence to do it.

[@debbieruiz9061]

This was the best video. Thank you for sharing your expertise and explaining every step of the way. Your honesty and thoughtfulness are so appreciated. Well done!!

[@tonynguyen5362]

Thank you for detailed video, I installed Jomar tankless water heater valve, so making cleaning much more simplify, no garden hose needed, less valve to close/open.

[@user-xp8qz1cc8z]

Thanks for this. I've come back 4 year in a row to perform this easy maintenance on my Navien.

[@janicebachmeier5299]

Fabulous video! Great detail, step-by-steps and really good photos or the parts. Thank you so much! I am a 66 year old female and was able to accomplish this task easily!

[@bradrfield]

I was getting a 10 E 027 error code on my navien tankless. I followed this video step by step and it fixed my problem! I had a plumber come out before I saw this video and he was going to replace a part that didn't even need replaced for 280$. So this video saved me a ton of money! Thank you!

[@rodneyarmanie8069]

Excellent video! Clear, concise and to the point. Watched it a couple of times before doing the job and didn't encounter any issues. Thanks.

[@blongtx19]

Fantastic How-To Video! If I lived in your area, you'd have my business hands down. Great work and I appreciate your desire to help customers and homeowners have success in maintaining their investment!

[@snapcrack55]

Thank you for a great tutorial! I'm curious about a couple changes from the other video. Like not draining the house hot water lines, not opening the hot pressure release valve. Also no mention about the recirculation line & clean out?

[@matthewmccauley2907]

Use this video as a reference every year when I clean our Navien. I'm so glad I found this video. It makes it easy to navigate through the steps even though it's not the exact model.

[@TMoua79]

No amount of Thank you can do this video justice. But, thank you, thank you, thank you. Your explanation is superb!

[@ronstoddart1948]

I watched this and followed the instructions, saved myself $160. Easy if you have the small sump pump, which I do. Many thanks.

[@willreadingmovie]

I took notes so I could refer back to what Ray said. Here's what I got: - turn off gas - turn off power on water heater unit - remove 4 cover screws - unplug water heater - remove and clean cold air intake filter - reinstall cold air intake filter - close hot and cold isolation valves - remove service valve caps and attach houses, place hoses in 5 gal bucket, open valves, let drain for a few minutes - remove and clean cold water inlet filter (have bucket ready) - reinstall - pull pin, remove and clean dirt trap - reinstall - descale heat exchanger with 5 gallons of vinegar in bucket - attach hoses to pump - cold side attached to pump, hot side in bucket - let run for 45 minutes - flush out vinegar: - close both service valves - run garden hose out of hot water service valve to appropriate drain - keep hot isolation valve closed - open hot water service valve - KEEP HOT ISOLATION VALVE CLOSED - open cold water isolation valve - flush for 10 minutes - close hot water service valve, then remove hose - recap service ports - turn cold water on - turn hot water supply on - put cover - turn on gas - hit power button

[@Dan-sr6oe]

2 gallons of vinegar into a 5 gallon bucket. Also, after the 10 mins of flushing out the system with cold water, I noticed the cold water intake is in the closed position, which he doesnt mention doing in the video.

[@dw3133]

Excellent video. I have a Navien tankless. I've been doing the annual vinegar cleaning for a few yrs now on my own. I didnt know about the cold air inlet filter or the dirt trap Easy fix! Mine was full of small bugs on the air inlet and had some dirt in the trap. Thanks for those 2 segments. I will add to my annual maintenance.

[@andreilesiuk9538]

Are you happy with your navien tankless? I’m about to get one…🤔 thanks

[@seancampbell11]

Fantastic video! Just cleaned my Navien heater following along step by step with the video. Mine is an older model than the one in the video but the process is the exact same. Thank you very much, Ray!

[@lowellswartzentruber5847]

Very good video and informative. Your descaling video is also excellent. A few points for that video which comments are turned off. You cleaned the water inlet filter twice. Also opening all the hot water faucets does not drain the pipes with the heater hot water cutoff turned off. Everything else is spot on! 👌

[@Flatlandflyer]

I would hire you in a heart beat! The world needs more trades people like you!!

[@glennbrown9178]

Very well done! I've been doing our Navian for 8 years now since we moved in. Home stewardship.

[@brianteal1064]

Awesome tutorial, I just have to snicker at the dryer hoses you had originally hooked up with cold to hot and hot to cold, then the next frame they were correct. Nice catch! Thanks for a great video.

[@ericschwartz9982]

I"m flushing my Navien tankless today. Thank you for creating a helpful and consise instructional video with such clear instructions! Great job!!!

[@laurabeegle9181]

This is one of the best video's I have ever watch. Thank you so, so much. I live in SW michigan and have had a really hard time finding plumbers to come out to service my On demand. I followed this video today and did it myself. Worked great!!!! Thank you so much. Laura

[@paulhenry1338]

This was a perfect how-to video. I performed the maintenance on my Navien water heater today with confidence after having watching the video.

[@kastoriadocumentary4427]

"Set customers up to succeed? Remind us to do this every year?" I appreciate where he's coming from, he explains it very well & the video is very informative but this is quite a bit to do every year for the average homeowner. My high efficiency heater has failed numerous times over the years because of error codes most likely because maintenance wasn't done. For me I'd rather stick with a regular water heater that lasts 10-15 years without my having to deal with error codes & take care of cleaning it every year.

[@johndinnery881]

Great video. My heater was installed 8 years ago. The installer did NOT explain any of this. Of course, I have been having issues with Code 16 for some time. Calls to Navien fell on deaf ears. Today, after watching this video, I have purchased a pump, the hoses and the vinegar. Tomorrow, we'll be Code free and hot showers without the temperature going to cold, back to hot, then to cold, back to hot and then solid cold because of Code 16. Thanks for your great instructional video. Oh, my wife thankx you too !!

[@stripnwild]

what type of pump is god for this (model etc)? I too was never told to descale the water heater at all. The company/installers came in....and that was it....never said anything about maintenance