Tankless Hot Water Heater Repair Mankato MN

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Tankless Water Heater Repair and Maintenance Mankato MN

Problems with your tankless water heater? This expert tip will guide you through typical gas and electric tankless water heater repairs.

To keep a tankless water heater running smoothly, flush it once or twice a year.

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With proper maintenance, tankless water heaters rarely develop problems, but if you experience a drop in water temperature or no hot water, here are the possible culprits:

Gas Tankless Water Heater

With a gas tankless water heater, the burner can become clogged, creating hot spots that can burn out the heat exchanger. If you find that some parts of the burner do not produce flames, turn off the water and gas, remove the burner and clean the openings with a small wire. Replace burner and test unit.

Tankless Water Heater Maintenance Mankato MN

Tankless water heaters circulate water through small openings, so it is important that the quality of the water is at least fairly high. If your water is hard, install a water softener if you don’t already have one. If your local water hardness exceeds 8 grains per gallon, you may need to install a water filter before installing your water heater.

Due to the small openings inside a tankless unit, it may need to be flushed every six months to two years. If the water supply slows down, it may be time to rinse. You can hire a plumber to do it, or you can do it yourself. You will need a small sump pump or submersible pump, a 5-gallon bucket, two hoses, and 2 gallons of white vinegar.

1. Remove the drive cover. Close the water inlet and outlet valves. On a gas unit, also turn off the gas and disconnect the electrical supply or turn off the circuit breaker. On an electric unit, turn off the 240-volt circuit breaker or flip the disconnect switch on the subpanel. Pull out the silver tab in the center of the pressure relief valve to relieve water pressure.

2. Place the sump pump or submersible pump suction pickup in a bucket of vinegar Run one hose from the water heater inlet to the sump pump and another hose from the pressure relief valve to the bucket . Plug in or turn on the pump and allow the vinegar to run through the water heater for 15 to 20 minutes. This will clean out mineral deposits known as “scale.”

3. Turn off the pump. Unscrew the inline filter housing, which is usually located near the water inlet. Take out the mesh filter, clean it and then replace it.

4. Take the pump out of the bucket and run it briefly to expel any residual vinegar. Empty the bucket and fill it with clean water. Attach the pump and turn it on to run clean water through the system for a few minutes. Disconnect the hoses and then turn on the water and electricity.

If you are having difficulty, contact a qualified local water heater repairer.

Tankless Electric Water Heater Repair Mankato MN

On an electric unit, the heating element may need to be replaced. Here is how to do it:

1. Check the manufacturer’s documentation. to locate the heating element. Disconnect power to the unit. Shut off the water supply to the unit.

2. Turn on the hot water handle of a nearby faucet so water can siphon out. Remove the screws on the bottom of the unit that hold the heating chamber plate, remove the plate, allow the water to drain and replace the plate.

3. Disconnect the wires leading to the heating unit, which can be fastened with screws. Wrap a rag around the heating element to prevent water from dripping. Use an adjustable wrench to loosen the nut that holds the heating element in place and remove the element. Purchase an exact replacement and install it, making sure the o-ring is properly seated. Turn water back on, restore power and test drive.