How to Drain a Water Heater (Updated Step by Step for Tank & Tankless )

In many homes, the water heater is the most frequently replaced major appliance so learn how to drain a water heater and extend its lifespan. Without proper maintenance, it lasts as little as six years. In this blog from Cincinnati's Apollo Home, we will review why you should drain a water heater, how to drain water heaters, how to drain a tankless water heater and even why maybe you should not drain a water heater. Why Should I Drain My Water Heater? Draining a water heater annually also improves performance and reduces operating costs. Why? Because all municipal water supplies contain a level of naturally-occurring dissolved minerals known as "hardness." As hard water heats, minerals gradually accumulate in the bottom of the . If the tank is not regularly drained, this layer of sediment solidifies. This mass forms a permanent barrier and the heat from the burner flame takes longer to reach the water in the tank. Burner cycles increase and consume more gas until the tank finally becomes unusable and must be replaced. Draining the sediment from a tank water heater once a year is an easy DIY task: Power off. If the heater is natural gas-fueled, turn water heater gas valve to the "off" position. If it's an electric water heater, turn off the power to the heater at the switch or circuit breaker. Shut the cold water inlet valve on top of the heater. Open up a hot water tap in the house somewhere close to the water heater. Connect a garden hose to the drain outlet located near the bottom of the heater. Route the other end of the hose outdoors to an appropriate discharge location. Open the drain valve and allow the tank to drain. None After the tank is empty, open the cold water inlet valve and flush the tank for several minutes until water emerging from the hose appears clean. Close the drain valve and the hot water tap you opened earlier. Disconnect the garden hose. None Allow a few minutes for the tank to refill completely relight the pilot, then turn the gas valve to "on." For an electric water heater, restore electricity at the power switch or circuit breaker. Many homeowners do not consider draining a tankless water heater necessary because it does not store water. It's true heat water on demand but water passes through them. The same minerals build up and erode the surface of the tank's heating chamber. Because tankless models can last as long as years, it's good to know how to drain a water heater to get the most from your investment. Turn off the tankless water heater power source. None For gas, shut off the main gas valve. For electric, turn off the dedicated circuit breaker. Close and turn off the water valves connected to your tankless water heater. There should be three. None There should be a) a blue cold water valve, b) a red hot water valve and c) the main valve which runs water into your house. None This prevents hot water from coming out during the task and prevents cold water from moving into the water heater. On each of the cold and hot water valves you will see purge valves. Remove the purge port valve caps. None This step relieves any pressure inside the valves and prevents burns from hot water spraying out. None CAUTION: make sure the hot water valve is completely shut off for safety. There is often pressure released when removing purge port valve caps. None Be sure caps and rubber washer sealing discs remain in place. Without these washers, the valves wo not work right. Attach the hosing lines to each water valve. None Your tankless water heater may have included hosing lines from the manufacturer. If not, these are available from hardware or home repair stores. Just be sure they are long enough to connect the water heater and your bucket. None Some manufacturers have extra or specific instructions for this step. Consult your owner's manual if necessary. None Sometimes this step requires the water from the heater to drain using the sump pump. Again, consult your manual if you are committed to DIY. Twist purge port valves perpendicularly to the position of the hot and cold valves. This opens the purge port valves. Use undiluted white vinegar to clean your tankless water heater. None Avoid the temptation to use chemical cleaners because your water heater provides drinking and bathing water. Chemical cleaners, therefore, may be harmful to your health. None We recommend using 2.5 gallons of undiluted white vinegar. Cider vinegar is not a good substitute, it will stain the tank. Also, use fresh vinegar. Do not reuse from a previous flush. Flush and drain according to your water heater's manufacturer. This may take up to 45 minutes. After flushing completes, close the purge port valves by twisting the "T-shaped" handles. Disconnect the hosing lines from each water valve and remove. Replace the purge port valve caps on the valves. Be sure to avoid breaking the rubber sealing discs inside the caps when you completely tighten the caps. Restart the water heater. Again, refer to the manual for precise directions to do this safely. None This procedure often requires you to rotate and open the hot and cold water valves to a parallel setting to the main water valve to the house. Slowly turn on the hot water tap in a nearby sink. This allows the water to pass through the pipe. None This may take two to three minutes for the water to run without air in the mix. What if the Water Heater Wo not Drain? If the water wo not drain from the tank or comes out in a trickle, you probably have a clog. We recommend calling a licensed plumber from Apollo Home to deal with it. This may sound contrary, but sometimes it's best to drain your water heater. Why? Because if it has not been drained in several years, the sediment slightly displaces the water. This creates hot spots on the tank's bottom. The flame overheats the tank in these areas and over time, break down the materials. The breakdowns create a tiny hole. The sediment, ironically, plugs the hole. If, however, you flush your water heater after years of sediment buildup, Have Better Things to Do Than Drain A Water Heater? Call Apollo Home We are eager to share our plumbing expertise. We've learned a lot in our more than 100 years and gladly use it to help you. Click Here to Schedule a Plumbing Service, Repair or Installation are licensed, insured, and background-checked for your peace of mind. They receive ongoing certified training to repair or service any brand of water heater. also handle issues with clogged toilets and sinks, garbage disposals, slow drains, leaky pipes and sewer lines. We travel throughout Cincinnati, Ohio and northern Kentucky to serve homeowners. Need If you have a water heater leak or any plumbing emergency, call us 24/7. Tired of your old water heater? If you are curious about a new tank or tankless water heater, let us know! We are happy to provide

1. The Ol' " Rotten Egg" Smell in a Water Heater?

Boy, the experts on this thread are scary. Your problem is high concentrations of sulfer dioxide in the water. That is what causes the "rotten egg" smell and will not cause you any physical harm. With my well, it tends to be a seasonal problem and does not merit a high priced solution. A water softener will not solve the problem and there is nothing wrong with your water heater. Flushing for ten or 15 minutes will reduce the concentration, and the smell. Sulfer will not cause anything to rust. In extremely high concentrations, it is possible that it could clog pipes. Do you see black specks if you palm the water? Leave the water heater full with the electricity off for the sake of the water heater (unless it will go below freezing). Otherwise, an aerator is the only solution for your problem.

2. should i replace my water heater?

The drip is probably caused by sediment in the valve.Do you periodically open the drain to flush it? You might try doing that. If you have not flushed it regularly and this does not work you are probably due for a new heater. Better to replace it before it springs a leak and causes real problems

3. New water heater and expansion tank - low pressure

The new tank may have been piped wrong, and restriction may have been introduced. Did the plumber reduce the pipe sizes in and out of the tank. The new tank will supply the same amount of hot water as the tank you re[laced. The expansion tank is not the problem. Something has changed, you have to find out what

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How can I turn down the temperature of my wwater heater?never heard of a water heater exploding.— — — — — —Water Heater RegulationsThe other pending regulation is on new minimum energy efficiency standards for commercial water heating equipment. As mentioned earlier, that rulemaking was not completed by the end of the Obama Administration, and as a result, is now pending. The issue with that rulemaking is it has a legal deadline by which the DOE has to issue the new final rule on new minimum efficiency standards for commercial water heating equipment by May 2018. Because this rulemaking was not completed, it is not subject to the 60-day freeze in the sense that you are not really freezing anything because they never finished it. "But with the new Administration coming in," says Greene, "there is the prospect that it may say, 'Well we do not really think this is necessary and we are going to attempt to roll it back.'"— — — — — —If the pilot light goes out on your hot water heater is it dangerous or harmfulNo, it is not dangerous. (Unless you are working with a water heater that is 20 years old.) In any modern hot water heater, if the pilot light goes out a fail-safe will go off - preventing gas from leaking out. Also, there is a sensor so if there is not enough air-flow or oxygen with the water heater, it will shut off the gas.— — — — — —How to Install a Gas Water HeaterSome areas require seismic straps to prevent earthquake damage. These straps brace the water tank against the wall to keep the unit from toppling over. If you are not in an earthquake zone, skip ahead to the next step. Seismic straps should be installed approximately 6 inches from the top of the water heater and 18 inches from the bottom. Locate the wall studs closest to the strap measurement and drill pilot holes. Secure one end of the strap to the stud with a socket and ratchet. If block covers the studs, use a masonry bit to create a pilot hole. Wrap the strap around the water heater and adjust the size, securing the adjustable bracket on the opposite side. Pull the strap tight and repeat the process on the lower strap.— — — — — —Tank vs. Tankless Water Heaters?Hello, I think it's no problem to run a 3 zone if the power is large enough. Concerning Tank vs. Tankless Water Heaters, you could find many differences via search through google or yahoo. Do not show here. We are one Chinese Electric Tankless Water Heater Manufacturer. We could supply high quality heater at a reasonable price. More info, please visit the following source.— — — — — —How to Prevent Scale Buildup in a Hot Water Heater Heating ElementWhile there are many things that you can do to prevent scale buildup, one of the most reliable of these is to invest in a water-softening system. This removes the ions dissolved in the water that cause the water to be "hard," calcium and magnesium. A water-softening system must be maintained, as water-softening systems exchange the calcium and magnesium ions for another ion, usually sodium, the sodium ions will run out after a while and need replacement. Because hard water is damaging to pipes and appliances and it inhibits soaps and detergents, however, you may find using such a system worthwhile.— — — — — —The Best Tankless Water Heaters for the HomeHike Crew's portable, propane-powered water heater combines the luxuries of home with the ruggedness of camping. The built-in pump is placed into a water source and attached to a propane tank to provide ongoing hot water for camp showers, washing dishes, and rinsing equipment. Powered by AC/DC electricity, the Hike Crew portable comes with a hand faucet and shower head attachment, as well as some welcome safety features. For example, when the water runs out or reaches 125 degrees Fahrenheit, the unit automatically shuts off the burner. Capable of outputting 1 GPM with 42,000 BTUs, the Hike Crew is not great for all applications, but it's ideal as a mobile unit.— — — — — —What is a good effective heater for large spaces?Convection heaters can heat a whole room more quickly than a radiant heater. That works well if there are a number of people in the room or they are moving about within the room. Some convection heaters also have fans to circulate the air in the room. Convection heaters are inexpensive. You will get one rated up to 5,000 Btu's for less than $50. Like radiant heaters, convection heaters use a variety of heating elements. Ceramic disc heaters cost up to $150 and produce up to 5,000 Btu's per hour. Oil and water filled units are the most efficient convection heaters. They utilize a heating element in a bath of oil or water. Like a water heater, the element cycles on and off. The water or oil stays warm in it's container and heats the surrounding air.
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