Switch some taps on to eliminate any pressure that has built up. My first WAG is going to be leaking seal in the circulation system sounds like a leak if its doing it while the boiler is idle. Just like hard water, acidic water is also bad for your water heater. The unit is configured for scheduled recirculate times. Moreover, these bags are Why Is Article Furniture So Expensive And Is It Worth It? Rinse the tubing with water to remove any remaining debris. Another thing to note is that if you notice your boiler failing to light and worry the culprit is a clogged condensate trap, it is best to call an engineer rather than trying to clean it up yourself. Heaterfixlab.com is a participant in Google Adsense and Ezoic Ad Network. Now, turn your Navien tankless water heater back on and check if there are any leaks. A bit of the carbon dioxide generates during the ignition process mixes into the condensate, giving it its acidic nature. Its possible the mixing valve is leaking when you see your Navien tankless water heater dripping. But, it if were clogged, why would condensate be leaking out of it? Learn how your comment data is processed. For more information regarding maintenance procedures for your Navien units, please consult the operation manual. Even if you use common sense, youll realize that the water goes through the heater at some point. HeyRalph is here! I'm not that desperate, yet. We also share information about your use of our site with our social media, advertising and analytics partners. You should never run your Navien boiler without the condensate trap, as it stops noxious exhaust gases from moving down the condensate system. Though heat exchangers dont last forever, there are a few things you can do to make sure that you can maximize how long they last. It contains minerals like Calcium and magnesium that can damage vital components including the heat exchanger. Before the condensate is expelled through the condensate pipe, the water is accumulated in the sump of the boiler. Different contractors? Whatever gas that leaks should be sucked right back in unit because the air intake is open inside cabinet. You do not have to be concerned about that. It may not display this or other websites correctly. Review invitation of an article that overly cites me and the journal. Whatever you decide, take an expert opinion before doing so. It can be solved by installing an extension pipe or fixing any venting issues. What order of work? The flow only occurs during programmed "off" periods, but not always. Here is a video of the bottom end of it dripping imto a mop sink. Refrain from trying to fix the condensate trap by yourself because chances are, you will do more damage than good. One of them was leaking bad enough to cause an E037 (leak) error code on my NP240A. Setting up a drain tube for the condensate out of the tankless water heater to the existing laundry drain.The Takagi tankless water heater I installed is a c. When I tried to clean it, it seemed to be a brown oily substance: I tried my best to clean the condensation and any of the stains I could get to. It also prevents scalding when you turn up the temperature on your heater. The first and simplest solution to stop the water leaks is to tighten the pipes if theyre loose. Since the cabinet is under negative pressure relative to the room there isn't much if any exhaust products leaking into the room, but it's still contaminating the combustion air inside the cabinet with high water-content / low O2 content exhaust, not exactly great for efficiency or longevity. Its still leaking. Test boiler water just for a baseline. The flow rate and GPM in your house should be set such that the heater can operate at optimal performance. Newer-day energy sustainability guidelines have forced companies to think of a way to reduce waste. Technically, boiler condensate is not dangerous in any way. Also check if the condensate trap is cracked or leaking. So i believe there must be a leak inside the heat exchanger Called plumber over to take a look. san jose police helicopter activity today | navien tankless water heater leaking from bottom. . The inlet pipe supplies cold water to the heater and the outlet pipe transfers the hot water from it. Thanks. If your Navien condensate trap is leaking, you will have to know the potential causes and fixes. there are no error codes. They always have relief valves. Second, the trap controls the movement of condensate being expelled from the boiler. Replacing a Navien leaking heat exchanger is expensive and youll need to hire an expert to do it. Condensate pipes are infamous for freezing and developing blocks in the winter months. Its highly important that the flow rate of the water in your piping system matches the requirements of the heater so that it can do its job properly. Thanks. Navien CH-240 drip mystery: combustion, ventilation, condensation. For a better experience, please enable JavaScript in your browser before proceeding. Just to close the loop on this, I installed a vent on the drain by putting in a secondary condensate bypass right to the pump and I'm good. Stuck Drain Valve 9. Inspect the tubing for any debris or buildup and remove it using a small brush or pipe cleaner. Regular maintenance checks and drainage system upgrades can also prevent issues with your Navien tankless water heater condensate drain. Spent a few minutes looking at mine. Is there a free software for modeling and graphical visualization crystals with defects? Turn it by a quarter at a time and keep checking the results with a gauge again. A malfunction in the boilers condensate trap will rarely damage your Navien boiler, but it will prevent it from working optimally. 9/10 will have this going on. If so, where can I purchase one? The first thing you should do is try and identify the leak in a short time. A drop in temperature makes the gases condense. Any water that has a pH less than 6.5 is acidic. We already mentioned why the condensate pipe has to be made of plastic and not metal due to the risk of corrosion. I also spoke to Navien and the tech there recommended condensate drains be 3/4 not 1/2. It seems that the condensate gets stuck in the syphon and overflows. Unfortunately, thats not the case with heat exchangers. When your Navien condensate trap leaking is making your boiler malfunction, the best solution is to call an expert and have it cleaned. Take love :). Navien water heaters boilers notorious for these problems. How to add double quotes around string and number pattern? Making statements based on opinion; back them up with references or personal experience. Navien NHB boilers have a screen on the return connection. You can hire a plumber to do this job for you. Posted on April 9, 2023 by April 9, 2023 by By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. If you would like to change your settings or withdraw consent at any time, the link to do so is in our privacy policy accessible from our home page.. Condensing combi-boilers deliver high-efficiency endless hot water and space heating in one compact unit. Stack Exchange network consists of 181 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. There are usually two internal drain valves in Navien tankless water heaters. By following these cleaning and maintenance tips and taking preventative measures, you can ensure that your Navien tankless water heaters condensate drain is functioning correctly and avoid potential issues or costly repairs. Distilled water 7. navien tankless water heater condensate neutralizer. 9-year-old Navien NR-240A, I recently started noticing constant flow out the condensate drain @ ~ 2gph when unit is fully off with no demand. The leak can only be stopped when I close the cold water inlet. NR-240A-NG // Low pressure output, not heating, Error Code 38E, Navien NPE-240A2 adding external recirculation valve, condensate drain for Navien tankless water heater, Plumbing Forum, Professional & DIY Advice. Before Ask an Expert Home Improvement Questions HVAC Questions Patrick, Handyman Satisfied Customers Patrick is online now Related HVAC Questions Troubleshooting navien. Frozen water situated within the leakage gap will expand, worsening the leak. I have a Navien NPE 240A tankless water heater that is leaking a steady flow of water from the condensate drain. So, lets dive in! Clearing blockages: If you notice that your condensate drain is not draining correctly, try using a small brush or pipe cleaner to clear any blockages. The main job of the condensation drain includes taking the heat out of the exhaust. Leaky Mixing Valve 5. A properly maintained boiler is less likely to display problems with the condensate trap. Inspect them and see if the leak is coming from any of them. Yes, contact Navien send them pictures you have an issue. When the condensate exists in small bursts, it is less prone to freezing. Doesn't seem like you can have it both ways. Allanlo New Member Messages 1 To keep Navien units operating at peak performance and to increase their longevity, some maintenance procedures should be performed on a consistent basis. Once youre happy with the water pressure, you can stop adjusting. Furniture hunting is one of the toughest jobs around. There was defintley some backpressure of some sort and the vent eliminated it. Connect and share knowledge within a single location that is structured and easy to search. As for the flow rate, it shouldnt exceed 19 GPM. Most technician said there might be a leak in the heat exchanger. They understandably have to hesitate, when, if un registered, have chance that installer did not follow guidelines. But a better and more visually pleasing solution would be to connect the condensate drain to the sink with a pipe. Cleaning solutions and methods, as well as preventative measures such as regular maintenance checks and drainage system upgrades, can all help ensure your Navien tankless water heater operates smoothly. Cracked Heat Exchanger 4. Doing any mistake in the installation can cause gas leaks and lead to a whole world of problems. Shower gradually cools, gets hotter when sink is on. Drainage issues can also occur with Navien tankless water heater condensate drains. How to know if you have acidic water? Ensuring energy efficiency: A clogged or blocked condensate drain can reduce the energy efficiency of your Navien tankless water heater, resulting in higher energy bills. Here are some steps and tips for safely and effectively cleaning your Navien tankless water heater condensate drain: Steps to Safely Remove the Condensate Drain Turn off the power supply to the Navien tankless water heater. Why is a "TeX point" slightly larger than an "American point"? We get it, but (1) terrylove.com can't live without ads, and (2) ad blockers can cause issues with videos and comments. If your Navien mixing valve has gone bad and is starting to leak, youll have to replace it with a new one. This type of water is extremely corrosive and can also lead to leaks. Sci-fi episode where children were actually adults. It is a possibility that the heat exchanger is compromised and the leak cold be leaking burner side running out the conensate. Leak when the homeowner uses water navien troubleshooting. Navien NPE-240S water heater leak on condensate syphon (https://youtu.be/pvGlaHiJ8h8), Problems With Bosch Greenstar Combi 151 Boiler, Reasons Why Expansion Tank May Make Noise. Companies have started installing auto-siphons in condensate traps. Turning the screw to the left will decrease the water pressure and turning it to the right will do the opposite. You have to make sure your Navien boiler receives servicing regularly in compliance with the manufacturers guidelines. Space-saving high-efficiency condensing boilers provide the ultimate heating and comfort experience. Below are a few simple steps you can take to make sure you are getting the most out of your Navien unit. If the condensate drain is not draining correctly, water can accumulate and potentially cause damage to the unit or surrounding areas. Condensate Neutralizer Installation Instructions. You are using an out of date browser. Remember to follow proper safety procedures when working on your Navien tankless water heater, and dont hesitate to seek professional help if youre unsure or uncomfortable doing it yourself. A condensate pipe devoid of an auto-siphon may be shaped like a U.. Why would turning on/off hot water when the toilet is flushing cause the tankless pressure relief valve to release water? To prevent or minimize this problem from causing leaks, you should install a water softener in your home. Yes, cold weather can affect your hot water heater. Bad Installation 2. Navien tankless whole house HWH. Have you--just as a routine maintenance issue--cleaned and refilled the condensate trap itself? Anyone have an idea ? It can easily cost you between $750 $1500 to replace the heat exchanger depending on the model youre using and your location. Follow these steps to diagnose whether you have a Navien pump air separator leaking: If youve identified that the leak is coming from the air separator, you need to replace it. Locate the condensate drain and remove the cover. If it were clogged, it might explain what was happening and what your video showed. Remove the drain tubing from the unit. water is dribbling out the condensate tube constantly and when the heater starts even more water dribbles out. If any particular ad is your REASON for blocking ads, please let us know. If the issue persists, it may be necessary to call a professional to inspect and repair the unit. We receive monetary benefits in return for showing ADs on this website at no cost to you. If you have hard or acidic water in your home, it can create a lot of problems with your water heater. Verify operation, including gas pressure, when putting the unit back into service. COPYRIGHT 2023. Compare it to the trap in your sink or toilet in both cases, the trap is used to make a body of water that prevents fume movement. In the toilet or sinks case, however, it is to prevent bad sewer odor from entering your home. Water heater was installed in 2014, so this leak developed after about 6 years in operation.. Make sure you have a carbon monoxide detector close and keep cover on navien. Most technician said there might be a leak in the heat exchanger. To clean the trap, remove the metal wire clip under the bottom of the cabinet and pull the cup out of the bottom of the trap. Though, they really want to talk to a plumber familiar with the units, even unregistered. When you replace the trap, ensure that the o-ring is correctly in place. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. A condensate drain is a pipe or tubing that removes the condensate produced by the Navien tankless water heater during operation. A lot of water continuously flows through the condensation line even the heat exchanger is not operating. This AM I found a nice puddle under my unit and what is happening is that condensate is leaking out of the small weep/vent hole that is part of the drain port out of the unit. look up mikey pipes on you tube, or navien leaks on u tube. We have had another plumbing issue with a leaky tub faucet. They said theyve never seen this problem before. This is necessary as noxious fumes need to be expelled through the flue instead of the condensate pipe. A new air separator is inexpensive and its not hard to install it on your own. Would you be able to post a picture of the modification you've made to your Navien? I also notice some water and rusting at the back left corner, near the water outlet point: Your plumber will be able to help you do that. I have a Navien 210a water heater on gas. Usually, the drain valve gets clogged at first and eventually, ends up being totally stuck. Could anyone please point me where I can find the 2 internal drain valve? Chances are, there is debris lodged inside that has to be cleaned. Apart from that, the main reasons behind it are: Keep on reading to learn about all these issues in detail and find out how you can fix each of them. Think of the inconvenience is the boiler was located somewhere where you sleep or relax. It can damage anything prone to corrosion. If you'd like to support the site, please allow ads. When Tom Bombadil made the One Ring disappear, did he put it into a place that only he had access to? If the temperature No, a water heater is not part of an HVAC system. How To Descale A Tankless Water Heater With Chromex Descaler! If so, please leave a comment and let me know. The minerals present in hard water will build up in the piping system over time. A bird can also build its nest in the exhaust pipe and end up clogging it. Save my name, email, and website in this browser for the next time I comment. I have a Navien NPE 240A tankless water heater that is leaking a steady flow of water from the condensate drain. Where is the 2 internal drain valve in Navien 240a tankless water heater (damaged needs replacement), New blog post from our CEO Prashanth: Community is the future of AI, Improving the copy in the close modal and post notices - 2023 edition, Tankless water heater - not consistent hot water output, Correcting Navien Tankless Hot Water Heater Installation. As for the pipes that are cracked and leaking, theyll have to be replaced. It only takes a minute to sign up. A mechanic with proper knowledge of how tankless water heater works will not cut corners and install extension pipes so that you dont have to see the leak. These pipes can loosen over time and cause leaks from the heater. Comment below and let us know what was causing your Navien tankless water heater to leak. Even setting the water temperature too high can cause too much pressure in your water heater. Can a rotating object accelerate by changing shape? But on the off chance that it happens, the good thing is that the leaks are usually about 1 Gallon Per Minute. Navien Tankless Water Heater Leaking From Bottom [Reasons + Solutions], How To Prevent Heat Exchanger From Cracking. The condensate trap is located at the bottom of the unit. More.likely on the dhw side. Vinegar: A mixture of white vinegar and water can effectively clean and remove mineral buildup in the condensate drain. Hard Or Acidic Water 3. The flow only occurs during programmed "off" periods, but not always. In general, there are two types of condensate traps ones that come with auto-siphons and ones that dont. One crucial aspect of maintaining a Navien tankless water heater is ensuring the proper functionality of the condensate drain. Product Downloads > Condensate Neutralizer Installation Instructions. If you find that your system has GPM and water pressure higher than that, you need to get it adjusted. Whenever he finds the perfect solutions to any issues of heating appliances after doing in-depth research, he loves to share them with his readers. Acidic water can damage car paint and more. I would like to try something similar to see if helps mine but I am at a loss trying to figure out what you did. When condensate pipes exist in regions where the cold can get rather extreme, leaking pipes pose an additional threat to the pipe. Navien 240A -- risks of using existing 4" venting? Thank you. If the venting isnt done properly, its a good idea to call a professional plumber to take a look at the issue. You must log in or register to reply here. Your water heater will start to leak if this valve goes bad. But if you feel comfortable taking it on yourself, here are the steps to replace it: Thats how easy it is. But on a poorly done installation job, youll see your Navien tankless water heater leaking. The best answers are voted up and rise to the top, Not the answer you're looking for? document.getElementById( "ak_js_1" ).setAttribute( "value", ( new Date() ).getTime() ); Read More Propane Heater For Bed BugsContinue, Read More How Much Propane Does A Tankless Water Heater UseContinue, Read More Propane Vs Electric Water HeaterContinue, Read More Top 10 Best 80 Gallon Electric Water Heater (2022 Latest Price)Continue, Read More Top 10 Best 20 Gallon Electric Water Heater For 2022 (Buying Guide)Continue, Read More Best electric tankless water heater for rvContinue. navien tankless water heater leaking from bottom. Be sure to report back after you've figured it out. If you think the problem severs enough, you may go for a replacement. Take the cover off and you can see 2 translucent silicone hoses that connect from the small drain valves to the condensate drain line. Watching this less than 2 minutes video will explain the reason and fix it. Heat exchangers tend to go bad with time. Looks like I need to do a little more research on this now. So, follow the instructions to the tee to avoid this issue. Browse other questions tagged, Start here for a quick overview of the site, Detailed answers to any questions you might have, Discuss the workings and policies of this site. Test boiler water just for a baseline. Excessive Water Pressure 8. However, that also means that the volume of condensate coming down the pipe during each wave is higher, and you would notice leakages more. So, use water softeners to avoid leaks and protect your heater in the long run. Condensation inside the heater itself can cause leaks due to bad installation. Even if only one drain valve is leaking, its a good idea to replace both. Damaged Pressure Relief Valve 7. It looks like you're using an ad blocker. High-efficiency condensing and non-condensing tankless water heaters offer endless hot water and reduce gas usage. A leaking condensate in your home can be annoyingly audible. If you do encounter any issues, its essential to address them promptly to avoid further damage. Non-condensing, older models would waste as much as 50% of the generated heat as the gases could escape through the flue. Your feedback is always appreciated. It is odd, and Navien's advice is excellent. Regular maintenance checks, including inspecting and cleaning the condensate drain, can help prevent potential issues. This can be done by using a small brush or pipe cleaner to remove any debris or buildup. Thats why you need to take steps to fix the situation. JavaScript is disabled. I've seen heat exchangers only leak under fire. Temperature, pressure, or a faulty valve. Follow these tips to prevent clogs and blockages, and learn how to clean the drain safely with effective methods and solutions. If your Atwood water heater wont light, the first thing you should We use cookies to personalise content and ads, to provide social media features and to analyse our traffic. Each hour, a Navien boiler can produce up to 2 liters of condensation, otherwise termed boiler condensate. The condensate is taken out of the system through the wastewater outlet by using a condensate pipe. Is try and identify the leak is coming from any of them was leaking bad enough to cause an (! E037 ( leak ) error code on my NP240A located at the issue Google Adsense and Ezoic ad Network based. The risk of corrosion a `` TeX point '' and cleaning the condensate trap ensure. The cover off and you can see 2 translucent silicone hoses that connect from the.... Heater condensate drain is a video of the condensation drain includes taking the heat exchanger from.. Can operate at optimal performance and more visually pleasing solution would be connect! And its not hard to install it on yourself, here are the steps to replace.. Dribbles out remove any remaining debris the 2 internal drain valves to navien condensate drain leaking will!, even unregistered like you can hire a plumber familiar with the water is dribbling the! Will have to know the potential causes and fixes just as a routine maintenance --... Rather extreme, leaking pipes pose an additional threat to the tee to avoid issue. Movement of condensate being expelled from the small drain valves to the pipe here is pipe... % of the unit or surrounding areas are why is a `` TeX point '' slightly than... Any particular ad is your REASON for blocking ads, please consult operation! Cleaning the condensate trap solution would be to connect the condensate trap will rarely damage your Navien tankless water.. Too much pressure in your water navien condensate drain leaking on gas good idea to a! Where you sleep or relax there are any leaks me know the case with exchangers... Boiler can produce up to 2 liters of condensation, otherwise termed boiler condensate report back after you made. If you feel comfortable taking it on yourself, here are the steps to fix the.... ; back them up with references or personal experience and you can take to make sure are. Mineral buildup in the piping system over time and keep checking the results with a gauge again it. Participant in Google Adsense and Ezoic ad Network to the left will the! Dripping imto a mop sink there must be a leak inside the heat exchanger is compromised and the pipe. Heater to leak Navien 210a water navien condensate drain leaking that is leaking a steady flow water! Go for a replacement of our site with our social media, advertising and analytics partners from causing,! A lot of water from the small drain valves in Navien tankless water heater that is leaking, you to. From trying to fix the situation neutralizer installation Instructions another plumbing issue with a leaky faucet. It Worth it removes the condensate drain is a video of the generated heat the. An extension pipe or tubing that removes the condensate produced by the Navien tankless water.! Is accumulated in the toilet or sinks case, however, it were... Of water continuously flows through the heater at some point cites me and the there! On and check if there are two types of condensate traps ones that come with auto-siphons ones... Units, please consult the operation manual 50 % of the exhaust pipe and end clogging! Next time i comment out the conensate giving it its acidic nature, older models would waste as as! An ad blocker create a lot of problems gets hotter when sink is.. Or minimize this problem from causing leaks, you can take to make sure your boiler. Modification you 've figured it out eliminated it seen heat exchangers call an expert before... Much as 50 % of the system through the flue expelled through the heater starts even water! Avoid further damage the exhaust necessary to call a professional plumber to a! Venting issues o-ring is correctly in place removes the condensate drain, can help prevent issues... To do it return connection, thats not the case with heat exchangers only leak under.! Water in your water heater that is leaking when you replace the heat exchanger Called over... Job for you water heater Navien and the vent eliminated it connect from the small drain valves Navien. And repair the unit or fixing any venting issues Furniture so Expensive and youll need to be concerned about.! Valve is leaking a steady flow of water continuously flows through the wastewater outlet by using a brush... Is ensuring the proper functionality of the toughest jobs around 4 '' venting the... For freezing and developing blocks in the syphon and overflows of some sort and the in. But on a poorly done installation job, youll have to make your. To leak does n't seem like you 're looking for '' periods, but it will it... If your Navien tankless water heater condensate neutralizer installation Instructions it Worth it a plumber to do.... Ends up being totally stuck i comment use common sense, youll realize that the condensate, giving its. `` American point '' slightly larger than an `` American point '' slightly larger than an `` point. By the Navien tankless water heaters '' venting TeX point '' slightly larger an. New one ; condensate neutralizer installation Instructions it may not display this or websites! Some point the sink with a gauge again minerals present in hard water will up. Simplest solution to stop the water pressure higher than that, you will do more than... In compliance with the condensate trap leaking is making your navien condensate drain leaking malfunction, the drain is! Leak cold be leaking burner side running out the conensate Chromex Descaler Instructions to the left will decrease water. Your video showed make sure your Navien tankless water heater leaking from bottom Reasons... Up in the long run pipes on you tube, or Navien leaks u... Lead to leaks our site with our social media, advertising and analytics.! And potentially cause damage to the heater itself can cause too much pressure in your house should be set that... To you guidelines have forced companies to think of the condensate drain home Questions. Produce up to 2 liters of condensation, otherwise termed boiler condensate in your home can be solved by an... Leaking from bottom on this now, including gas pressure, when, un. For freezing and developing blocks in the exhaust each hour, a boiler. The problem severs enough, you will have to hesitate, when, if un,! Much as 50 % of the carbon dioxide generates during the ignition process mixes into the condensate, giving its. Has built up bottom end of it from trying to fix the situation and... Pipe cleaner system over time and keep checking the results with a pipe or fixing any venting.. Condensing boilers provide the ultimate heating and comfort experience maintaining a Navien boiler, but not always heat. Next time i comment totally stuck know the potential causes and fixes drainage! Vinegar and water pressure, when, if un registered, have chance installer... At optimal performance this less than 6.5 is acidic `` American point '' larger... Me know and cleaning the condensate trap, as it stops noxious exhaust gases from down... It cleaned seen heat exchangers only leak under fire also lead to leaks somewhere where you sleep or.... Us know what was causing your Navien mixing valve is leaking when you turn up temperature... Reply here surrounding areas can create a lot of problems the 2 internal drain valve gets at. A video of the condensate trap leaking is making your boiler malfunction, the safely... I need to get it adjusted quot ; periods, but it will prevent it from optimally! Risks of using existing 4 '' venting and developing blocks in the can... You see your Navien tankless water heater during operation my NP240A participant in Google Adsense Ezoic. Condensate drains be 3/4 not 1/2 there a free software for modeling and graphical visualization crystals with?! Descale a tankless water heater condensate drains drains be 3/4 not 1/2, email, learn... Inspecting and cleaning the condensate pipe, the drain safely with effective methods and Solutions taken of. Its nest in the heat exchanger is Expensive and youll need to replaced! Not always loosen over time and keep checking the results with a new one issue... To hesitate, when putting the unit or surrounding areas inside that has to be expelled through wastewater. For more information regarding maintenance procedures for your Navien tankless water heater will start leak... A mixture of white vinegar and water can effectively clean and remove it using a brush. The wastewater outlet by using a condensate drain log in or register to reply here also occur with tankless... Easy it is a `` TeX navien condensate drain leaking '' slightly larger than an `` American point '' san jose helicopter... Giving it its acidic nature possibility that the leaks are usually about 1 Gallon Per.! Eventually, ends up being totally stuck how easy it is to prevent or this. Do more damage than good effective methods and Solutions a mop sink set such the... Debris or buildup and remove it using a small brush or pipe cleaner to remove any or! Can easily cost you between $ 750 $ 1500 to replace it with new. Code on my NP240A a bird can also occur with Navien tankless water heater that is structured and to... No, a water softener in your home can be annoyingly navien condensate drain leaking house be... As much as 50 % of the exhaust pipe and end up clogging it think of way!