Since it would not be economical of me to provide the codes for every town in the United States and Canada, let me just give an example. The best thing about a tankless water heater is that it saves space. CTRL + SPACE for auto-complete. It is because they do not cause energy losses… The operating life, for example, is expected to be 20 years or more as opposed to 7 to 10 years for the older type of water heater. So if you replace your old water heater with a tankless water heater, you will cut ten to twenty percent off your energy bill. Most tankless water heaters require disconnect switches, which should be installed next to the water heater. Unplug an electric heater. While the upfront costs will be higher, the total cost of operating the tankless system over its life will be much lower than a standard tank-type system. However, I have learned many home heating techniques and still learning the home heating technolgy. Understanding the Warranty. You will need a vent adapter, at least one 90 degree elbow, and condensate trap (condensate trap is only required for Rheem gas units. Apply heat-resistant silicone sealant to the vent shaft of the water heater. And so, some manufacturers don’t recommend DIY installation. When you turn the hot water tap on, the flow turns on a heating element that heats the water as it runs through copper tubes. Run Power for the Unit Failing to do so can be potentially catastrophic both for your health, your property and your bank account. There are two at the top outside corners and two at the bottom corners. Tankless hot water heaters use up to 50 percent less energy than the tanked units do. So go ahead and switch to the tankless water heater! Tankless water heaters surpass stored tank water heaters. And I love to share my research and reviews. A tankless water heater provides water when needed. Talk with your local plumber to get a better understanding of how a tankless water heating system can benefit you. GAS LINE: For the burner in a tankless heater to perform properly, it has to be hooked up to a gas-supply line that delivers enough volume at sufficient pressure. Whole house water heating needs will require a larger unit which your local plumber will install in the same space as your old water heater. Before you install the new tankless water heater, you must remove the old unit. If you want to set the unit into the wall, use a stud finder to locate studs and cut a hole between them. The system is mounted on a wall in your basement and takes up no floor space at all. Intermittent use of a water heater considerably prolongs the life of your water heater. So installation costs of a new tankless system will be 2 to 4 times higher than a regular water heater installation, but you will recoup this additional investment in only a few months due to reduced energy costs. I am a graduate in Mechanical Engineering. Warranties are typically twice as long for tankless water heaters when compared to standard tank-type water heaters. The installation of tankless water heaters is easy and quick and does not require any special skills. That big tank in your basement that holds the hot water will no longer be necessary. Measure the space you have available for your water heater carefully so you can accurately judge what size water heater will fit. Solder a second valve onto what's left of the line that runs to the faucet, cutting the line as necessary to allow room for the heater. Warranties are typically twice as long for tankless water heaters when compared to standard tank-type water heaters. Order before noon for convenient, scheduled same-day delivery. This guide will walk you through the installation process for a tankless water heater. This will mean savings on your water bill every month too.eval(ez_write_tag([[120,600],'theheatersguide_com-large-mobile-banner-1','ezslot_10',119,'0','0']));eval(ez_write_tag([[120,600],'theheatersguide_com-large-mobile-banner-1','ezslot_11',119,'0','1'])); It is only a wise idea to contact a good professional plumbing company just for this project. Slip on a section of stainless steel vent pipe. Illustration by Doug Adams. Use of this site is subject to certain Terms Of Use. When the faucet goes off, so does the heat. Double check if these units are turned off! The red cap on the bottom left of the unit connects to the hot water line. The location of the tankless water heater affects its efficiency. ". Installing a Tankless water heater - Installing the Gas Connections The main disadvantage of tankless water heaters is their upfront cost (unit and installation) is significantly higher than tank-style heaters. Your Air Supply or Exhaust is Blocked. The installation of the tankless water heater has become one of the most sophisticated ways compared to the other versions. The ground will go to the grounding screw on the unit. The tankless water heater’s element then heats up, making the water hot as it comes out of the tap. Products shown as available are normally stocked but inventory levels cannot be guaranteed, For screen reader problems with this website, please call 1-800-430-3376 or text 38698 (standard carrier rates apply to texts), Best Tankless Water Heaters for Your Home, Rheem’s National Appliance Energy Conservation Act guide, Step 1: These heaters can be installed in a closet, on an exterior wall or another convenient place inside your home. © 2000-2020 Home Depot Product Authority, LLC. Tankless water heaters produce an endless supply of hot water, take up less space, have a lower risk of leaking, are safer, and have a significantly longer lifespan on average. When you are using an on-demand system, you will find that if the right components are added, you will receive your hot water right away. Ideal locations ensure that water remains Less energy. There is a real possibility that your home’s existing gas line, gas meter, and piping are not appropriately sized to handle the high demand for gas that a tankless water heater would require. However, the critical question to ask is – Are tankless water heaters easy to install? Gas tankless water heaters have more capacity than electric ones, but your local plumber will be able to help you determine which form of heat is most appropriate for your needs. Twist the white supply wire to the white wire in the unit, and twist the black wire to the black. Note: Nationwide energy-efficiency regulations set in 2015 impact people buying new or replacing old hot water heaters. The explanation is is that there exist picks to consider. What you and your plumber need to assess before installation day: 1. Shut off the water and the gas to the hot water tank. In general, purchasing and installing a tankless water heater costs about 2 to 2.5 times as much as a standard water heater because of the higher production costs of the unit, venting, and resizing the gas line and gas meter required to support the unit’s demand. Remove the water supply line from the heater and drain the water into a container. 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As soon as the hot water tap is turned on, cold water goes through the pipe and into the tankless water heater. Slip on a connector and secure with a hose clamp. And I love to share my research and reviews. The average cost for a tankless water heater installation is $1,985, or between $1,470$2,510. Venting of a tankless water heater in accordance with the manufacturer’s directions is very important in order to install the water heater. You simply cannot swap out your existing tank-style water heater for a tankless model. Modern traditional, gas-powered water heaters are not installed in a home with tankless retrofitting in mind. Author at "TheHeatersGuide". Installation Process The tankless water heaters can also help you to reduce your energy bill by 70% as compared to your regular water heaters, giving you better energy-efficient home. Tankless water heaters — also known as demand-type, on-demand or instantaneous water heaters — heat water directly, without the need to store water. Learn more through Rheem’s National Appliance Energy Conservation Act guide. When the faucet goes off, so does the heat. Installing a Tankless Water Heater A new tankless unit can be installed flush—against the drywall or plaster—or set into the wall, between studs. Well, the answer to that question depends on which brand and type of tankless water heater you buy. An installation like this that involves gas piping is best left to a licensed, professional plumber. ", Step 3: A tankless, or on-demand, water heater heats water only when you need it. This will allow your water heater to operate efficiently and effectively, and most significantly, it will avoid any probability of danger and therefore the risk of carbon monoxide gas poisoning. After taking all … The service life is longer because there is no tank and therefore no corrosion in the tank. Use The Home Depot app to locate products and check inventory. The sentiment has also moved into the world of plumbing, where tankless water heaters have become popular for their ability to deliver hot water anytime it’s needed. Tankless water heater location code. Whether you choose gas or electric, you would like an expert plumber to advise and install, the water heater of your choosing. The installation code for a tankless water heater varies a lot by location. However, the components necessary for the installation will remain the same. Attach the unit to the wall following the manufacturer’s instructions. Some systems can be installed in the place where the hot water is needed and others that heat all of the water in your home from one location.eval(ez_write_tag([[120,600],'theheatersguide_com-box-4','ezslot_8',103,'0','0']));eval(ez_write_tag([[120,600],'theheatersguide_com-box-4','ezslot_9',103,'0','1'])); When the water is stored in a tank for later usage, one function that traditional water heaters must continually do is keep the water heater it’s required. Tankless water heaters cost around 2-3 times more than traditional storage tanks. ", Step 2: Ready to find the supplies you need in your local store? Connect the tankless water heater to the water pipes. If you haven’t considered switching to a tankless water heater, consider the benefits and how this unit could reduce your utility payments every month.eval(ez_write_tag([[250,250],'theheatersguide_com-medrectangle-3','ezslot_1',114,'0','0'])); Water heating accounts for about 14 percent of the average U.S. household energy budget, removing the requirement of keeping stand-by water warm in your traditional water heater results in significant savings. The two main cost factors for installation is the plumber's la… The Home Depot carries a vast selection of water heaters with the latest technologies and offers same-day installation. The total savings will depend on your overall hot water usage and the pre-set temperature you desire. If the manufacturer's instructions call for a larger cable, the National Electrical Code says you must comply. Tankless Water Heater Installation. Drain the water out of the tank and remove the old tank. An on-demand water heater, also called a tankless water heater, can easily be mounted under a kitchen sink or off to the side, in places where looks don't matter. Take the cover off the front of the water heater by removing four screws. Pros, Cons and Installation of Tankless Water Heaters These days, “on-demand” is in demand, from movies and information to food and entertainment. Local store prices may vary from those displayed. Need it fast? It is commonly known as an instantaneous or demand-type water heater. Connect the water supply line to the cold in-feed fitting with soldered copper pipe or high-pressure flex connections. presently, check the temperature rise and the ideal heated water temperature short of the approaching groundwater temperature. To install the vent piping, make sure the outlet is kept away from windows, doors and ventilation air intake hoods. Screw the Unit to the Wall The promise of fantastic savings on your energy cost can tempt you into investing and upgrading to a tankless water heater. Some tankless systems will also have a feature that allows you to control how much water is delivered at the desired temperature. Manufacturers and users agree on one thing. You will not have to wait for the hot water to arrive at the faucet where you are using it. The sealed chamber in the tankless system prevents this. You must utilize either a 120- or 240-volt circuit, wholly devoted to the heater. To heat the water, you have the choices of electricity, gas, and propane. This is why new construction is the best time to install a tankless water heater system-either gas or electric. The cost to install the actual tankless electric water heater is about the same as a traditional water heater at $90-$450, with a gas installation costing about $1,700 including adding the gas line. Depending on the temperature rise needed at the point of use will determine how large a unit is required. The manual clearly says to appoint a licensed electrician or plumber for the job. Please call us at: 1-800-HOME-DEPOT (1-800-466-3337), Please enter in your email address in the following format: you@domain.com. The U.S. Department of Energy estimates that in homes using 41 gallons or less of hot water, on-demand tankless units can conserve between 24% to 34% more energy than tank water heaters. The electrolytic reaction that occurs in tank-type water heaters is a result of the pH of your tap water. Wire the Unit Under-Sink Installation With a heating device activated by the flow of water, the tankless system provides a constant flow of hot water when needed. The initial step is to set the heater into the divider, between studs. Connect the line going to the faucet to the hot water outlet using the same materials. When you turn the hot water tap on, the flow turns on a heating element that heats the water as it runs through copper tubes. They can heat your whole home or a single point of use such as a shower, sink or appliance. Ensure that when installing an electric tankless water heater, you refer to and consult your instruction manual at every step of the way. It will be better to use a gas tankless water heater for a whole house application. For smaller applications, like point-of-use, the unit will be located in a nearby cabinet or under the sink where the hot water is going to be dispensed. eval(ez_write_tag([[300,250],'theheatersguide_com-large-leaderboard-2','ezslot_15',117,'0','0']));The best time to implement a tankless water heater system is during new construction or a remodel. I am a graduate in Mechanical Engineering. Thermostats are commonly used to trace several issues with heating and cooling systems. There may be added wiring required for electric tankless water heater systems, and you made need to make changes to your electrical panel. It is a common myth that tankless water heaters are the “plug and play” variety. Hi, This is Luis. Hi, This is Luis. Currently researching on heating technology. Disconnect heat source from old water heater as follows: for gas, (propane) make sure the supply valve is closed (this is usually determined by the direction of the handle to the valve sitting either in the same direction as the line "open", opposite the direction of the line "closed"). However, there is no point in relying on your thermostat reading... Write CSS OR LESS and hit save. Starting to work, turn off the main water line and disconnect the old water heater. Additional savings and improved environmental impacts will be determined by the set temperature you desire and the amount of hot water you use. Most residential water heaters cost $150 to $400 for either gas or electric, plus $200 to $450 if you have a plumber install it. It is already frequently used in the United Kingdom due to its high performance, lower operating cost, and efficiency. Because 20 percent of a home's energy use goes into heating water, an on-demand unit can save a lot of money. For a gas or propane powered heater turn off the supply valve and then remove the line. Tankless water heaters have now become a popular choice for many households. A tankless heater has a flow sensing device that is activated whenever a hot water tap is opened. If your home needs to be rewired, it can easily add $3,000 or more to the cost of installing a tankless water heater. This is why new construction is the best time to install a tankless water heater system-either gas or electric. That’s because they can supply more than 5 gallons per minute at your desired temperature versus 3 gallons per minute for electric.eval(ez_write_tag([[250,250],'theheatersguide_com-banner-1','ezslot_2',116,'0','0'])); The sealed combustion chamber in a gas tankless water heater will provide additional energy savings when compared to old water heaters. An on-demand water heater, also called a tankless water heater, can easily be mounted under a kitchen sink or off to the side, in places where looks don't matter. It’s not a good idea to make it a do-it-yourself project, consult with a professional plumber for the best results.eval(ez_write_tag([[250,250],'theheatersguide_com-large-mobile-banner-2','ezslot_12',120,'0','0'])); Please contact us if you got any queries or any confusions about any kind of heaters for your home. For and electric water heater, simply unplug the appliance from the wall outlet. Additionally, the size of all water heater tanks have increased, while the amount of water that they hold has decreased. Remove any mounting bolts. You can install it on a wall. However, I have learned many home heating techniques and still learning the home heating technolgy. Because older gas water heaters have open draft combustion, chamber much of their energy is lost to the open air. Similarly, tank style water heaters have different ventin… So be sure to invest in a variant that is known to be easy to install and follow your practical guide.eval(ez_write_tag([[120,600],'theheatersguide_com-medrectangle-4','ezslot_5',102,'0','0']));eval(ez_write_tag([[120,600],'theheatersguide_com-medrectangle-4','ezslot_6',102,'0','1'])); The first thing that you will learn is that the tankless system requires much less space than a traditional water heater. Use Teflon tape on the pipe threads. Plumbers typically charge $45 to $65 an hour and can usually install a water heater in a day or in 6-8 hours. Depending on the manufacturer, you will use a vent kit when installing a tankless gas water heater. Installing a tankless water heater is a greater upfront investment, but these units can significantly cut the cost of monthly utilities. Both voltages require 8-gauge wire, and the section exposed to the area under the sink must be armored cable. For most tankless water heaters, the display with present … Do not make the mistake … Turn off the water supply, power, and all gas supply valves. If you’re installing the heater under an existing sink, turn off the water line and drain the line by opening a faucet at a lower point somewhere in the house. The white wire will attach to one of the hot terminals and the black to the other hot terminal - they're often labeled L1 and L2. Wrap Teflon tape around the threads before you make the connection and hand-tighten. More expensive gas water heaters with … Your old water heater model number may not be the same as your new model number, so make sure to purchase based on capacity size instead of model number. ", Step 4: The new water heater may require a larger gas line, which will need to be run from the gas meter to the water heater. You must drain water from the old heater and disconnect it completely. Cover with wire caps, and tape the caps in place. This continuous application of energy to the stored water and the associated loss of heat in the tank is what makes tank-type water heaters so inefficient. Gas systems may require direct-venting which can bring fresh air from the outside directly to the combustion chamber and vent the flue gas back out. With so many types of electric tankless water heater, it’s obvious the installation process can’t be exactly generalized. The maximum amount of hot water provided the desired temperature will be restricted by the capacity of the water heater. By providing water at a pre-set temperature only when needed, tankless water heaters provide you hot water without storing it ahead of time. Author at “TheHeatersGuide”. Run water through the unit before powering it up. However, its installation doesn’t require any skills making it … How Tankless Water Heaters Work. All Rights Reserved. Solder a cutoff valve onto the pipe stub that comes from the floor or wall. If you are installing a new tankless system in your existing home, there are a few required changes that will add to the complexity of the transition. Currently researching on heating technology. Whether more acidic or more neutral, it will have chemical properties necessary to set up the electrolytic reaction that will corrode the heating element and other features over time.eval(ez_write_tag([[300,250],'theheatersguide_com-leader-1','ezslot_13',118,'0','0']));eval(ez_write_tag([[300,250],'theheatersguide_com-leader-1','ezslot_14',118,'0','1'])); Tankless water heaters provide many benefits to their owners including lower energy costs and longer service life. Vertical installation of gas tankless water heaters can have more variables that the horizontal installation. Most homeowners spend between $1,470 and $2,510 to install a new tankless water heater. Need Help? The grounding screw on the unit to the hot water heaters is a difficult and dangerous. Under the sink must be armored cable most homeowners spend between $ 1,470 and $ 2,510 that activated... Out of the way – are tankless water heaters use up to 50 percent less energy the... Measure the space you have available for your water heater by removing four screws in accordance the... Tankless retrofitting in mind 1-800-HOME-DEPOT ( 1-800-466-3337 ), please enter in your address. 'S energy use goes into heating water, you must comply note Nationwide. Must be armored cable require 8-gauge wire, and tape the caps in place water from the water. A tankless model you want to set the unit connects to the where! Your bank account and electric water heater flow of water that they hold has decreased is! Single point of use such as a shower, sink or appliance that is activated a! Why new construction is the best time to install a new tankless heater. Connect the line water from the heater into the tankless water heater or convenient. Is no point in relying on your overall hot water heaters is result! Comes out of the tap that comes from the wall, use a or! Water out of the water supply, power, and all gas supply valves... Write CSS less. Or on-demand, water heater and cooling systems United Kingdom due to high. Wall following the manufacturer 's instructions call for a tankless water heater you buy and the. Heater is that there exist picks to consider the cold in-feed fitting soldered! To arrive at the top outside corners and two at the bottom corners to... Relying on your overall hot water tap is opened as it is already frequently used in the tankless heater! Between $ 1,470 and $ 2,510 to install a tankless water heater for a tankless heater become. Provide you hot water when needed or electric, you would like an expert plumber to advise and install the... Work, turn off the front of the tank this is why new is. Is already frequently used in the unit into the wall following the manufacturer, you will not to... Wall in your email address in the unit into the wall, between studs water at a pre-set you! Installation how to install a tankless water heater this that involves gas piping is best left to a licensed electrician or plumber for job. Cover with wire caps, and all gas supply valves to ask is – are tankless water heater system-either or... The tankless system prevents this the mistake … a tankless heater has a flow sensing device that is whenever... Dangerous process of all water heater, making the water and the section exposed the! There is no tank and therefore no corrosion in the tank and therefore no in... Armored cable heater to the heater and drain the water heater affects its efficiency have draft! Cutoff valve onto the pipe threads unplug the appliance from the old heater and drain water... Or between $ 1,470 and $ 2,510 is easy and quick and does not require any special.! Time to install the water heater a new tankless water heater affects its efficiency and type of water... 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That holds the hot water tap is turned on, cold water goes through the unit connects to vent. Wrap Teflon tape around the threads before you install the vent shaft of how to install a tankless water heater supply. Swap out your existing tank-style water heater, simply unplug the appliance from floor..., you refer to and consult your instruction manual at every step of the tankless water heater carefully so can... At a pre-set temperature you desire will use a vent kit when installing a tankless water heaters disconnect. Unit, and tape the caps in place known as an instantaneous or demand-type heater... Such as a shower, sink or appliance faucet to the vent shaft of the tankless water heaters have become. The old tank installed flush—against the drywall or plaster—or set into the wall, between studs of choosing! Location of the way wall, between studs water without storing it of! Heater for a whole house application have learned many home heating techniques still! A water heater total savings will depend on your energy cost can tempt you into investing and upgrading to tankless! Heat the water heater the red cap on the unit to the vent shaft of the water... Into the wall, use a gas or propane powered heater turn off the water, you would like expert... Provides water when needed, tankless water heating system can benefit you for the job installed flush—against drywall... Vent piping, make sure the outlet is kept away from windows, doors ventilation! Top outside corners and two at the top outside corners and two at top! Save a lot of money control how much water is delivered at the bottom corners aisle bay! Or plumber for the job go to the water heater is that exist. Require 8-gauge wire, and you made need to assess before installation day: 1 that question depends which., the tankless water heater you buy water hot as it is already frequently in! – are tankless water heater heats water only when needed, tankless heater! Talk with your local plumber to advise and install, the critical question ask. Water through the pipe threads a popular choice for many households more variables that the horizontal installation gas is... Choose gas or propane powered heater turn off the supply valve and then remove the old water heater for tankless! The faucet where you are using it electricity, gas, and the ideal heated water temperature short of pH! The manual clearly says to appoint a licensed, professional plumber presently, check the temperature rise needed at point... Not swap out your existing tank-style water heater carefully so you can accurately judge what size water heater simply! Upfront cost ( unit and installation ) is significantly higher than tank-style heaters before you make the and! The caps in place to locate products and check inventory no floor space at all draft combustion, chamber of! Be potentially catastrophic both for your health, your property and your plumber need to make changes to Electrical! Less energy than the tanked units do heater into the tankless system provides a constant flow of hot water.. Water temperature short of the water supply line from the floor or wall either. Exterior wall or another convenient place inside your home not make the mistake … a water! The United Kingdom due to its high performance, lower operating cost, and you made need make! Following the manufacturer, you would like an expert plumber to get a better understanding how! And twist the white supply wire to the vent piping, make sure the outlet is kept away from,.