As always, your best reference is your owners manual which will have instructions for your specific tankless system. However, the hardness  of your water plays a part in this, and you may find it better to flush two to three times per year if your home’s water is especially poor quality. It comes with a 32-ounce bottle of FLOW-AIDE. When you think of a tankless water heater, you probably aren’t thinking tankless water heater maintenance. These kits generally include everything you need, such as a pump, bucket, descaler, and hoses. Remove the access panel and use a non-contact voltage tester to make sure there’s no longer power leading to the terminal. Allow … Close the cold water shut-off valve. With the proper care, a tankless water heating system can have a service life of up to 25 years and save you money every month in utility expenses. If the manufacturer of your electric tankless system offers the option to install Isolation Valves with Service Ports, and you have them in place, follow the flushing steps above for gas tankless water heaters. Flushing tankless water heaters – a simple step-by-step guide. Since the burner cycles are increasing, the tankless system is required to work harder than it should in order to get the same results. Flushing out an electric tankless water heater is a bit different from gas units, and some disassembly may be required. Flush the cold water inlet filter with tap water. Learn how to protect your tankless from hard water. And since lime scale build-up can wreak havoc causing damage, loss of efficiency, and reduced service life, it's critical to be proactive when it comes to flushing your tankless water heater. If this happens, professional repair will most likely be necessary. We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites. Shut off the electrical power at the breaker. Be sure to check the manual for your water heater, as it may have specific instructions to flush and descale. Do NOT dilute the vinegar. Although tankless systems won't spring a leak when preventative care isn't occurring, they will have very serious issues that can be quite expensive and annoying. Although, this article will deal specifically with flushing your tankless water heater, we highly recommend that you read our other articles that cover caring for your system. Replace the filter(s) securely and open the hot and cold water shut-off valves. Often, this issue is … Remove the screws which secure the wires to the heating elements. One of your best friends for flushing a tankless water heater is a submersible pump. How Often Should You Flush a Tankless Water Heater? EcoSmart’s patented, self-modulating, tankless water heating technology delivers hot water instantly—and for as long as you need it. Ignition Failure. The Rheem RTG20124 Flush Kit is considered to be one of the best residential tankless water heater flush kit. Fill the copper chambers (with the heating elements inside) with virgin, food grade white vinegar. One important note, these are only for gas tankless water heaters. Just like the gas fueled models, hard water is a concern because of the lime scale build-up that accumulates with use. Tankless water heater require flushing every 6 months to a year. Another great tool is a good flush kit. From your stove to toilet, a wide range of items in your house have some form of isolation valve installed for maintenance or emergency purposes. Flushing a tankless water heater is a critical part to keeping the system performing at it's optimal level. Tankless water heaters are not immune to problems. The water within the system can be VERY hot, especially if the heater was just operating. This is because gas tankless models operate by burning gas, which is harder to control than electricity. As lime builds up in the unit, the exchanger needs to work harder and more often to provide hot water. See Also: How to Descale a Tankless Water Heater. Remove the screws securing the wires attached to the top of the heating elements. Please read why it's important to check your owner's manual here, Rinnai Tankless Error Codes: How to Troubleshoot, Tankless Water Heater Buyer’s Guide: What You Need to Know. Electric systems are easy to flush and, in most situations (besides the vinegar) you may only require a screw driver and wrench, which you most likely already have available. 4. Rheem RTG20124 Flush Kit – Tankless Water Heater Flush Kit. Some manufacturers, like EcoSmart, offer the option to install Isolation Valves with Service Ports that allow the user to flush the system the same way you would a gas tankless. Remove the cold water inlet filter and flush it under a cold tap to remove any debris. Manufacturer recommendations vary, but most suggest that your tankless system should be flushed every 12 months. Locate the hot and cold shut-off valves and close them to prevent any water getting into the unit while you work. A good tankless water heater filter can help control how much lime gets into the system. After soaking a brush can be used to help flick the lime scale from the elements. Pour four gallons of undiluted virgin food-grade white vinegar into the bucket. Other manufacturers leave the decision up to the plumber who is doing the installation. To make matters worse, lime buildup isn’t covered in most warranties. Anyone who’s owned a regular water will be familiar with the need to flush the tank occasionally as a means of eliminating sediment. You should always use caution when working with your tankless water heater. If you have an electric tankless system, please follow the instructions outlined for electric tankless water heaters. It requires less space and fewer maintenance. Without a tank to "store" any incoming sediment, the tankless relies on this filter for protection. Let’s take a look at how the naturally occurring sediment in your water affects the heater and ways to make flushing easier and safer. Unlike a tank heater, you don’t have large volumes of water to sweep up and pull the sediment out, so having a quality pump such as the 91250 from Superior Pump will save hours, if not days, of manual flushing. While the tank is filling, check for leaks. Learn how to protect your tankless from hard water. The key focus of EcoSmart is the area of the water heater. These units deliver water to the faucets on demand without the use of a tank. As mentioned in the above section, we highly recommend using Isolation Valves with Service Ports. This prevents cold water from flowing into the water heater and hot water from coming out during the cleaning process. Key Specifications and Features to Look for in a Tankless Water Heater Dimensions. The recommended flushing frequency you follow is typically best determined by the hardness of your water supply. They also require far less maintenance or space to operate. Hard water contains minerals which can lead to lime scale build-up. Manufacturers are always looking to improve their products and there are many models designed to help reduce lime scale build-up from forming in the first place. How to Flush a Tankless Water Heater (Step-by-Step Procedure), Best Solar Water Heater Systems On The Market, Best Immersion (Bucket) Water Heater For 2021, Best Water Heater Earthquake Straps For 2021, How To Wire A Hot Water Heater: An Ultimate guide, The Importance of Flushing Tankless Models. Flush the Vinegar from the Tankless OPEN the Cold Water Shut-off Valve and allow the water to fill the tankless system. Do Tankless Water Heaters Need Maintenance? All EZ Tankless water heaters have a screen inside the water inlet side of the heater. Please read why it's important to check your owner's manual here. Close the cold water service port and remove the attached hose Open the cold water shut-off valve to flush out any remaining vinegar through the second hose into your bucket for about ten minutes. Disconnect the electrical power going to the heater. Close the cold water service port and remove the attached hose. A tankless water heater's only line of defense from sediment is the inlet filter, which is a small mesh screen that filters the water before it enters the unit. Clean the hot water in-line filter at this time if your unit is equipped with one). In addition, you'll want to keep safety top-of-mind. Bosch offers an O-ring kit that can be purchased. Replace the heating elements and re-secure the wires. Regular use helps maintain a healthy tankless water heater. The first step is you need to turn off the gas line valve. An excellent one that I recommend is J.C. Whitlam FLOW-KIT Flow-Aide System Descaler Kit that you can order on Amazon. I have two tankless water heaters and I flush every 6 months and I use white vinegar. Lot cheaper than calling a plumber to flush. Flush the filters at a sink to remove any trapped sediment. Learn More. About EcoSmart. They are still prone to malfunctions. Always check your owner's manual for specific instructions regarding your tankless water heater model. A sediment trap or softener can help with hard water to a point. (All tankless water heaters use a cold water inlet filter. The following procedures should only be used as a guide and not an absolute. Tankless heaters are no exception. OPEN several hot water faucets inside your home and allow the water to run for about 5 minutes. Allow the water to finish draining and remove the second hose. This will break up any scale on the elements. Electric tankless water heater's need less maintenance than gas heating systems, however, they still require periodic maintenance and inspections. Although, we highly recommend having a professional check your unit annually, the flushing task is not too difficult and can save you money if you do it yourself. Hot water—whenever and wherever you want it—is one of life’s many comforts. The harder the water, the more frequently you should flush. My favorite kit is by My PlumbingStuff, which not only works great and is easy to use, but is also environmentally friendly down to the last component, which easily makes it the best tankless water heater flush kit in my book. Navien Tankless Water Heater Reviews (Updated 2020) 20 Best Tankless Water Heater Reviews – Ultimate Buying Guide 2020 10 Best Electric Tankless Water Heater 2020 Failure to flush your tankless system can result in a reduced service life and unnecessary fuel expenses. If you want to maintain the top performance, efficient heating and long life of your tankless unit, simple cleaning and flushing out the limescale and sediment buildup is the way to go. How Often Should a Tankless Water Heater Be Flushed? Simply locate the appropriate water heater sizes on eComfort using your information. Place the heating elements inside the copper chambers of the tankless unit. Using a screwdriver, secure the wires to the top of the heating elements. Once connected you can run a solution of water and vinegar to clean the heat exchanger of any scale deposits. Shut off the power supply. Save my name, email, and website in this browser for the next time I comment. Remove the cold water inlet filter and (if present) hot water in-line filter. (similar to those used on intake water lines of washing machines) This screen is the last line of defense to keep particles from entering the water flow sensor housing and inhibiting the use of the heater. Some manufacturers also use a hot water in-line filter. EcoSmart Tankless Water Heaters. If any are cracked, they should be replaced. Now it’s time to flush the tankless water heater system to remove any SpeedyBright descaler cleaner that may remain. Flush out any sediment and debris from the filter housing. Also commonly referred to as an on-demand water heater, the tankless water heater may need maintenance every six months if your water heater is set to a high temperature or if you have hard water. I am about to install a new Ecosmart Eco 18 tankless water heater and am wondering if it is really necessary to purchase those expensive ($90) brass shut off valves they sell for this application. The amount of lime scale build-up inside your tanklesss system will increase over time, and as more and more build-up develops, the heat exchanger's burner cycles will also increase in order to compensate for the lost efficiency. Don't guess, find out when and how to flush your tankless heater. Inspect the heating elements. Just set the valve perpendicular to the gas … Unfortunately, that's just the way it is, and if you live in an area with high levels of hard water, you'll definitely want to be pro-active. Allow the vinegar to soak inside the chambers for 90 to 120 minutes. This tankless water-heater flushing kit should be purchased with every new or existing tankless water-heater system. It's safe, environmentally friendly, inexpensive, and very effective. However, if you do not have them installed, we recommend contacting a qualified professional to either install them for you or flush your tankless system. Open the purge port valves by twisting them perpendicularly to the position of the cold and hot valves. Flushing will require a big bucket to put the pump in, as there’s no simple drainage option as there is with the average tank model, hence the need for a submersible model pump. If your water is hard, install a water softener if you do not already have one. Unscrew the hose from the isolator valve on the water inlet side of the tankless water heater. Allow the vinegar to sit in the chamber for 90 minutes to two hours. Place the free end of the hot water hose into the bucket. These articles will help you get the most from your tankless heater: If you are a first time tankless water heater owner, you may want to consider hiring a professional to flush your system the first time. Before we get into any steps, it’s vital that we also discuss isolation valves. As an Amazon Associate we earn from qualifying purchases. Turn off the electrical circuit for the water heater at the breaker panel. Inspect the heating elements for any signs of damage. That’s why it’s important to know first why and when it’s needed, then how to flush a tankless water heater, be it gas or electric. Whether you plan to do the work yourself or hire a professional, knowing what needs to be done can be a contributing factor to getting the most from your tankless water heater. How to Install a Tankless Water Heater Pressure Relief Valve. Remove the access panel and test the wires leading into the terminal with a. Disconnect the electrical power to the tankless water heater. Their flushing recommendation is to remove the electrical heating elements and soak them in vinegar for 60-to-90 minutes. Here's a few safety precautions: Both gas and electric tankless water heaters need to be flushed regularly, however it's important to note that the procedures are entirely different. Locate and close the gas isolation valve. Gas systems are more complex. Heat exhangers are very sensitive to lime scale and even small amounts of build-up can negatively impact a tankless heater's performance and efficiency. A cracked element should be immediately replaced. If these tankless heaters are flushed using the gas procedures, the narrow passages and small dip tubes will become clogged, as the lime scale is flushed from the system. It can provide between 3.6 and 8.7 gallons-per-minute depending on the inlet water … It'll be money well spent and you'll have the peace of mind that you'll know exactly how to perform the tasks in the future. Turn OFF the electrical power to the tankless unit at the breaker. Turn on several hot water faucets and let the water run for about five minutes to flush out the vinegar and clear any air pockets from the line. Below, we've highlighted what size water heater you would need in our example of 6.5 GPM at a 63° F temperature rise. Flushing a tankless water heater on a regular basis is the single most important task to keep your heater running at peak performance. The term is essentially synonymous with a shut-off valve. This breaks down the scale and flushes out the sediment. The flushing procedures below are for gas fueled tankless water heaters. Replace the access panel cover and turn the electrical power back ON to the unit. Tankless water heaters run water through small apertures, so it is important that your water quality be at least fairly high. Loosen the hexagonal brass top of the heating element in a counter-clockwise direction to remove the heating element. Sediment. Tankless water heater maintenance is a must and should be done at least once a year. While the tank is filling, check for leaks. This Kelaro pump is of high quality with good quality hoses with clear instructions. Here's a list of what most gas tankless water heaters require to flush limescale: Some manufacturers provide Isolation Valves with Service Ports for their for their gas tankless water heaters. Tankless water heaters use a heat exchanger to transfer heat to the water. We strongly recommend NOT using chemicals to flush your tankless water heater. The Ecosmart is one of the most popular brands of water heaters due to its tankless technology which supplies you with endless running hot water. You can flush out a tankless hot water heater in about one hour. Depending upon the manufacturer and whether you had a technician do the installation, your tankless heater may or may not have an isolation valve installed. Preparing to Flush Your Tankless Water Heater, Flushing Procedures for Gas Tankless Water Heaters, How to Flush an Electric Tankless Water Heater, Flushing Procedures for Electric Tankless Water Heaters, Importance of Checking your Owner's Manual, How to Keep Your Tankless Water Heater Running at Peak Performance, How to Protect your Tankless Water Heater from Hard Water, Sediment Filters: Why Your Tankless Water Heater Needs One. Electric heating systems use entirely different flushing procedures. Turn the Submersible Pump OFF and dispose of the vinegar. The heat exchanger is especially sensitive to scale. Examine the tank for any signs of leaks (the paper towel test work wonders here). Close the access panel and restore power at the breaker. Allow the water to run for 10 minutes, then CLOSE the. Knowing how to clean a tankless water heater can help you get the maximum amount of efficiency and longevity out of your investment. Yet even tankless models are still exposed to sediment and harsh minerals. Let’s go over the process, as well as some useful tools and important considerations. Tankless water heaters are very different from their tank-style cousins, however, both are negatively impacted by limescale build-up. However, even with these features, it's a good idea to flush your tankless water heater prior to the code triggering. This is especially true if they are not professionally installed—in many cases, gas lines need to be extended in order to accommodate for an on-demand (tankless) water heater. Installing the ports will require a larger investment upfront, but overall, the task will be simpler since you'll no longer need to remove the electric heat elements. That’s why more people now appreciate its use over conventional water heaters. Tankless water heaters have become a real convenience in many households nowadays. Shut off the main gas or turn off the circuit breaker for electrical devices. It builds up a complete producing line in designing and producing high technology tankless water heater both for residential and commercial appliances. Fill the cooper chambers with undiluted virgin food-grade white vinegar. Unlike a traditional tank model, a tankless heater isn’t at risk of explosion from the buildup, but it can still lead to some costly problems. Navien models tend to be more straightforward, but some Takagi models require additional steps to position the water control valve properly. How to Flush an Electric Tankless Water Heater, Rinnai tankless water heater flush procedure, Rheem tankless water heater flush procedure, Notritz tankless water heater flush procedure, Navien tankless water heater flush procedure, Takagi tankless water heater flush procedure, 6 Ways to Unclog a Water Heater That Won’t Drain. Still exposed to sediment and harsh minerals heater was just operating instructions to flush tankless. 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