If maintenance does not resolve the issue, the source of the noises may be anything as simple as the expansion and contraction of the main steel tank or expansion tank during normal operation. Almost certainly, there is a valve someplace that is only half closed. The tankless system may have an internal check valve, so when the small water heater turns on to heat water, or hot water gets to it, you may end up with warmer water once you stop using it while the tank recovers. Other factors that contribute to noise in tankless water heaters include a dirty fan, leaks, and a malfunctioning burner. Partially Closed Valves Solution: 6. Although this is a good first step, it does not ensure that the noises will cease. Turn on the cold water valve entering your heater. jbird_1984 2 yr. ago. When a sufficient amount of sediment builds in your water heater tank, it may react with the heating element, resulting in the little mini-explosions that you are now experiencing. The water supply to your home should be shut off immediately if the leak is urgent. Gibsons Heating & Plumbing, Inc. will assist you with any and all of your hot water requirements. It sounds like a loud drip or knocking/tap, one tap every 3 sec. Popping or crackling noises. If your water heater is making noises that sound like water is running, you should look for leaks. Another typical problem that can cause noise in tankless water heaters is a clogged flow sensor, which regulates the amount of gas that is delivered to the heater unit. 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. Contractor's Assistant: Is your Navien water heater gas or electric? Water Hammering Solution: 5. Navien Tankless Water Heater Humming Noise [10+ Easy Fixes] 1. This can happen if the water heater is set to a higher temperature than the incoming water pressure can handle. It is usual for these types of noises to occur once in a while with electric heaters, so if your system sometimes emits a crackling sound, it is probably not a major problem. Siphoning Water Solution: 3. Dirty Flow Sensor Solution: 8. Loose Heat Exchanger Solution: 7. WebCheck the temperature of the hot water outlet pipe on the water heater. Make certain that the dirt in the tank is removed to avoid this problem. When gas tankless hot water heaters are turned on and heating water, they produce a lot of noise, however the decibel levels are normally less than 90 dB. Because there are several potential sources of the noise, it is preferable to have a plumber analyze the problem and, if necessary, repair the unit. If you hear any of these noises coming from your Navien tankless water heater, theres no need to panic. This is especially true if you do not have an expansion tank installed. Once your tankless water heater has finished heating water, its generally not very loud. If this is not the case, spin the taps counterclockwise until they are completely engaged. There are a few different things that can cause it, and thankfully, there are a few different ways to fix it. Return to the cold water valve and turn it on once more to get a better look at what the tank water looks like this time. I am in Houston and we are experiencing cold weather, power outage and our water supplier has low water pressure for the neighborhood Gas Tankless water heaters have their own individual noises that are difficult to distinguish. Follow the sound until it reaches its loudest peak. First, it could be that the water heater is over-pressurized. 2. It is possible that a water softening system will be required. Save my name, email, and website in this browser for the next time I comment. Tankless water heaters provide an infinite supply of hot water while taking up less space, posing a reduced danger of leaking, being safer, and having an overall lifespan that is substantially longer than conventional water heaters. Mineral Build-Up Solution: 2. Most essential, you should immediately contact an expert to inspect your water heater, as well as the quality of the air in your home and your plumbing. Every year, you should inspect your appliance at least twice. We can help. In the same way, look for any kinks in the electric cable that might signal an internal failure. With a little troubleshooting, you should be able to figure out whats causing the noise and get it fixed quickly and easily. Other types of heaters, in addition to this particular model, are affected by the same problem. An obstruction in the water heaters drain line might cause a bubbling sound. My navien tankless water heaters are making a loud rumbling noise. If you have a gas-powered device and you notice a rotten egg or sulfur smell around the outside of your unit, you most likely have a gas leak in your home or business. Do you obtain hot water from the faucet after a lengthy period of time? There should never be more than 80 psi of pressure within your appliance. Close the cold water valve and close the hot water valve. . There is no need to be concerned about these noises. Noises caused by oscillations in water pressure: Try to locate the source of the noise and tighten any slack straps that are keeping your pipes in place. Once youve determined the source of the noise, you may go on to determining the best course of action to take to decrease or eliminate the problem. If you put off the repair, you will wind up with higher energy and water expenses in the future. When a water heater overheats owing to poor ventilation and is surrounded by combustible materials, it is in danger of exploding. How old is it? How To Install A Power Vent Gas Water Heater? Obstruction In Pipes Solution: 10. Noises induced by changes in water pressure include: Check for any loose straps on the pipes that are linked to your tankless water heating system on a regular basis. Typically, this is caused by a valve that is not completely opened, either at the water heater or at a specific outlet such as a sink. Screeching A small aperture is being forced through under tremendous pressure, resulting in the high-pitched noises heard. It is possible that you may need to contact your plumber.If you have any questions or comments, please feel free to post them in the comment box provided below. Then quiet. Aside from water heaters, the pipes in your building may make obnoxious noises as they circulate water. In most cases, if you hear a clicking noise, it is the flow switch going on and off to start and stop the flow of water. The presence of something impeding your systems heating element, on the other hand, may indicate a more serious problem. To lessen the amount of noise produced by a tankless water heater, it is common practice to cleanse the system with vinegar, tighten any loose parts, or ensure that the intake and exit valves are completely opened. and continues for about 1 minute. These are all perfectly normal sounds that your heater can make. Vibrations: The most typical type of noise created by fluctuating water pressure is a ticking sound. The exact procedures to drain your water heater to get rid of the bubble, bubble, toil, and trouble will be demonstrated in detail. X-HazMatX7-X 1 yr. ago. Once the tank is full of water, open the T&P valve for a bit to free the tank of extra air. A water hammer arrestor may be installed by a plumber to fix the problem. How old is it? Gas tankless water heaters can be as loud as 90 decibels when starting up and heating water. Sediment Build-up. Furthermore, the water heater should never be used at temperatures higher than 212F (100C). Its important to make sure youre familiar with the process or get a professional plumber to handle it because the risk of steam burns is considerable. For example, the sound produced by an electric tankless water heater is distinct. It has an uncanny resemblance to the sound of someone hammering on the wall. Sounds like a broken impeller. If your system fails to ignite, check to see that your gas and water valves are both fully open before proceeding. The valve should be able to open on its own when the situation calls for it. Banging/rumbling: Banging and rumbling are two of the most prevalent sounds made by a running water heater. If your Navien tankless water heater is making a loud banging noise, it could be due to a few different reasons. This mechanism allows water to be released from the storage tank, which is particularly useful when there is excessive pressure. If your water heater is making noises that sound like water is running, you will need to check for leaks. Too much pressure if the insides of your water heater are under high pressure, you might also experience loud banging noises. An additional and rather pricey alternative is to install a water softening system between your water source and your water heater. Even a tankless gas water heater is susceptible to the same problem. Sometimes the whining starts right away. If the control panel of our unit displays an error code suggesting an obstruction, this indicates that your unit is experiencing a difficulty with its venting. Sometimes the whining starts right away. Sometimes the whining starts right away. Also see: Is Your Boiler Making a Loud Noise? Pump rattles at first, then makes loud whining noise. It is possible that a high pitched noise emanating from your water heater is caused by high incoming water pressure. Flush out your device or replace the components or tank to put an end to the noises. Tickling is produced as the pipes grow in size and collide with the wooden frames and delicate straps of the sconces. Once youve determined the source of the noise, you may go on to determining the best course of action to take to decrease or eliminate the problem. When comparing a tankless water heater to a traditional tank water heater, there is a lesser likelihood of hearing unusual noises. Every two months, inspect and replace the TRP valve, which should be replaced every three years. Hissing Hissing noises are frequently suggestive of a leak. 2023 ERNIEGRAVES | Process Measurement & Control Exhaust obstruction, ignition failure, overheating, and system overload are all issues that you may have with your tankless water heating system at some point. As a result, you will need to determine the source of the problem in order to prevent more problems with the device. If your tankless water heater is making noise, it is usually due to one of five factors, or a combination of them. WebNavien combi 7 : Loud Noise michael partensky 132 subscribers Subscribe 0 9.4K views 10 years ago Around 3 am, Nov. 04. Find out more about the various ways a Partner Agent may assist you in selling your house. If youre still not sure whats causing the noise, you can contact a Navien service technician for help. If your device runs on propane, check to see that your tank is not completely depleted. If your water heater is powered by gas or oil rather than electricity, it is more probable that the cracking sounds you are hearing are caused by moisture buildup in the tank. In this circumstance, water flowing around the element might generate vibrations, resulting in a humming sound to be heard. Loose components, limited water flow, silt accumulation, changes in water pressure, and vibrations are just a few of the reasons for this. If your Navien tankless water heater is making a loud banging noise, it could be caused by a few different things. If you are unable to adjust the valves on your own, you should get professional assistance. You may identify the source of the problem to a few of valves in the unit. When it comes to water heaters, this is especially true during this time of year because they must work harder to give you with the warm water your home need throughout the winter. As a result, less heat is transferred to the water, and you do not receive hot water throughout your bath. The dip tube is what brings cold water into the tank, and over time, it can become clogged with sediment or scale. The most common cause of knocking or banging noise is sediment buildup. A water heater is typically equipped with nipples that link it to the pipes. However, if you ever hear a noise that doesnt fit into any of these categories, or if a noise is unusually loud, its always best to err on the side of caution and contact a qualified technician for assistance. When the pipes are installed, they make contact with the wall, resulting in the noise. If no hot water taps are open you shouldn't hear water moving through the pipe. When the noise occurs when there is no hot water being used, it's likely there is a vacuum that's siphoning water away from the unit and causing loud noise and vibration. It is also possible to employ spacers to secure it in place. Corrosion and rust can build up in the valve, causing it to stop operating completely. It sounds almost like cavitation or a magnet rubbing against the casing as the recirculating pump winds down. It sounds almost like cavitation or a magnet rubbing against the casing as the recirculating pump winds down. Keep in mind that we are available at all hours of the day. Partially Closed Valves Solution: 6. Lets take a look at some of the issues that might arise with a Navien tankless water heater, as well as the remedies that can be used to fix them. When the noise occurs when there is no hot water being used, it's likely there is a vacuum that's siphoning water away from the unit and causing loud noise and vibration. Other possible causes of a noisy tankless water heater type include a problem with the burner, a filthy fan, or a leak in the sealed combustion system, which results in erratic gas combustion. This necessitates the installation of an additional check valve in the water line by a plumber in such situation.Wishing you success with your endeavor. My navien tankless water heaters are making a loud rumbling noise. Another possibility is that the water pressure is too high. Alternatively, if the silt obstructs the drain valve, it may be hard to empty the water from the storage tank completely. A tank that contains sediment and mineral deposits. Check the heating element if you are trying to figure out where the water heater is generating noise and humming problem came from. One of the most common causes of a loud banging noise from a Navien tankless water heater is sediment build-up. Sounds like a broken impeller. WebNavien combi 7 : Loud Noise michael partensky 132 subscribers Subscribe 0 9.4K views 10 years ago Around 3 am, Nov. 04. Many water heaters are equipped with heat traps or check valves, which are inserted in the pipes that run above the heater. The problem is that some designs are capable of producing mild tapping sounds. To do this, remove the object from the heater and soak it in a dish filled with vinegar before cleaning it. The heat exchanger is what heats the water, and if its dirty, it can cause the water to make loud banging noises as its heated. The majority of typical water heaters contain a storage tank that holds between 30 and 50 gallons of water (113 liters to 189 liters). Fortunately, the screamin water heater is the quickest and most straightforward fix on our list. If this occurs, you should either minimize the number of programs running at the same time or upgrade to a more powerful machine. Clean parts and ineffective systems are examples of such things. The banging or popping noise you hear could be the result of air bubbles escaping from beneath the sediment and rising up to the top of the tank. If your tankless water heater is making noise, it is usually due to one of five factors, or a combination of them. (article). If, on the other hand, your local water supply is very hard, you may find that you need to cleanse your system more regularly. Remove the element and clean it or replace it. Flush the water heater: at least once or twice a year, flush out your water heater. Things break so much they pretty much have the best in the industry. Regular cleaning and maintenance of your water heater will eliminate the majority of the noises that are associated with it. Noises of humming If you are hearing humming noises, it is most likely because your water heater element is loose, causing the water running around it to generate vibrations. It is also possible that minerals are responsible for the formation of limescale on the internal walls of the heater. First, it could be that the water heater is over-pressurized. After that, go ahead and turn off the faucet (the one you had turned on to prevent pressure in the water line). If the buzzing is bothering you, a plumber can tighten the element for you. Both property damage and personal harm will result as a result of this. Yes, if you hear a bubbling sound, it is not the sound of a witchs brew being cooked in a cauldron! This valve is intended to allow water to escape the tank if the pressure inside becomes too great. The hum can be irritating to everyone, but it will not cause damage to the heater or its components. WebHi Nora, Gas tankless hot water heaters all make noise when firing up and heating water, but the levels are usually less than 90 decibels. A water softener in your primary water line will lessen accumulation and the related sounds in your water heater, which is due to the minerals in your water causing sediments in your water heater.