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. :)

This was an exact replacement for the old one that lasted about 10 years. kzfaq.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).

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!❤️❤️❤️❤️❤️

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.

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!

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

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

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!

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

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!!

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

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.

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.

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!!!

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.

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!

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

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!

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!

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.

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.

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.

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

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!

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.

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

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.

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

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!!

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!!!

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

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 !

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

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 🙏🏼

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! 👏🏼 👏🏼 👏🏼

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

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 🇨🇦.

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!

Very informative and easy to follow direction. Thanks for posting! Hands down the best "how to" water heater maintenance video I found.

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!!

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

Greatly appreciated, thank you for the hands-on detailed instructional video on how to maintain our Navien Tankless Water heaters!!!!

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!

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!

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

This is the first video that clearly explains how to do all this. Thank you!

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

This is one of the BEST instructional videos I've ever seen. Bravo!

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

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.

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

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...

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.

Great reminder and instructional, I perform this service every year on my unit.

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.

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

Awesome video. Thanks so much for the VERY clear instructions 👍. My cold water filter was almost clogged from hard water and debris after just one year. Flush kit instructions don’t mention it, so great tip!

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!

Really great video. Love the step by step to take out any confusion of what to do when! Thank you!!

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!

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

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!

This is the best video on tankless water heaters I've ever seen!-- and I've seen alot--I can't think of a thing you left out.

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.

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

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.

Super helpful video!! I followed you step-by-step and the cleaning process worked flawlessly. Thanks so much for this great video!

Thanks for the great video! My Navien is 2 years old so this is my 2nd cleaning. The video I watched last year did not mention the Cold Water Filter nor the Dirt Trap so thanks very much for pointing those out. My 45-minute timer is running so I'm almost good for another year. Thanks again!

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

This tutorial is very thorough and easy to follow. Thank you!

Easy to follow.. thanks for having this video.. i had my first clean.up after 4 years. I never thought that Tankless Water Heater needs maintenance. Good thing this video came so handy that i did not encounter any issues.

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

Excellent video. It showed exactly how to clean the Navient water heater, where the filters, screws, valves are. Thanks

Thank you so much. This has been the best explanation of any KZfaq video I have ever seen. Super clear and simple. thanks again

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

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!

Just finished descaling my Navian heater with this video. Awesome job! Dead on. Every detail!

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.

Thanks. I bet you saved me $200 and a call to my plumber.

This is an amazing, helpful video . You made me feel confident to even start this job, and made me feel good that I could do it. Great job !!!!

Thank you for the video. I just did my Navien according to your instruction. Mine is a little different, but similar enough.

Perfect instructions…. Now that’s a good tech and awesome company policy.

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.

Very Patient and to the point video. Not second is wasted and thoroughly explains even for the beginners. Thank you.

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

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

Great video, thank you!!!! My installer never mentioned maintenance, and I never thought of doing any! Only when this happened to come up in my KZfaq suggested videos did it dawn on me - three years in and the air filter was nearly clogged with leaves. I will do it yearly here on out thanks!!!!

Great video, thank you for the thorough explanations and accurate step-by-step. Three notes for those trying at home: make sure hoses on services ports are tight, mine wasn't and it leaked vinegar everywhere. Also, my cold water filter drained for quite a while, so bucket was very necessary. Lastly, my cold water filter needed more than 1/8th turn of tightening after cleaning and reinserting. Until I tightened it 1/2 way, it was leaking during vinegar flush with the sump-pump.

Fantastic video. Very helpful and a great expense saver. Ray, you should have your own home improvement show! :)

You can't get any better than this video. Thank you!!

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!!

Many thanks, my plumber didn’t do most of this nor showed me it even had to be done, much appreciation, respect, and thanks!!!

Great informative video. The presenter and his communication skills are top notch! Thank You.

My salute to Ray and his camera person! I do wildlife photography and watch a lot of videos on editing in lightroom and photoshop and I have never seen a instruction or help video that has been presented in a better or easier way to understand. You did a great job and I commend you. All these wannbe video people need to take a look and see how to teach and reach the people who need to know how to do things they have never done and want to learn. Thanks again Ray and crew. William Allard Wildilfe

You did a great job of explaining how to flush your tankless water heater. I’ve seen 4 different videos , this is specific to 3 of my tankless heaters at my businesses. The one I have at home is a Rennai tankless. I bought everything separate and made a kit. I cleaned all four and they all still work. Why would anyone mark you with a thumbs down. Thanks again for the information. (maybe jelious plumbers)

Ray, thanks for the extremely helpful video. Your clear instructions made the process a snap for me.

Thank god for videos like this. I wish I lived near this guy so I could buy a system off of him.

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.

Very helpful. Getting a Navien installed in about a week and I saved this video to refer back to when I need to do routine maintenance.

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