Otis Singleton
Replacing an RV electric water heating element is a simple and cost-effective way to improve its performance. Over time, old elements can accumulate mineral deposits from the water in the tank or simply wear out from use, causing the water to heat less efficiently or stop working altogether. Fortunately, the process of replacing an RV electric water heating element is straightforward and can be done by following a few simple steps. This guide will walk you through the process of replacing an RV electric water heating element, including turning off the power, draining the tank, removing the old element, and installing a new one.
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What You'll Learn
Turn off the gas, electricity, water pump, and water supply
Before you start replacing an RV electric element, it is important to turn off the gas, electricity, water pump, and water supply. This is a crucial step to ensure your safety and avoid any potential hazards. Here is a detailed guide on how to do this:
Turning off the gas and electricity:
Locate your RV's electrical switch panels, which are usually found near the hot water tank. Find the specific switches for the gas and electrical power supply to your hot water tank and turn them off. This will disconnect the power source to the water heater, ensuring that there is no risk of electric shock or gas leakage during the replacement process.
Turning off the water pump:
The water pump in your RV is responsible for distributing water throughout the system. To turn it off, locate the pump, which could be under a bed, in a kitchen cabinet, or under a sofa seat. Once located, follow the steps provided in your owner's manual to safely turn off the pump. This may involve disconnecting power or closing specific valves.
Turning off the water supply:
If your RV is connected to an external water supply, such as a city water supply, you need to turn off the main valve that controls the water flow into your RV. This valve is typically located near where the water hose connects to your RV. By turning off this valve, you ensure that no water enters the system while you work on the electric element.
Verifying the power and water status:
After turning off all the necessary switches and valves, take a moment to verify that the power and water systems are indeed inactive. Double-check that the electrical supply to the hot water tank is off by using a voltmeter to measure the voltage. Also, check that the water pump is not running and there is no water pressure in the system by opening a faucet and ensuring no water flows out.
By following these steps, you can safely and effectively turn off the gas, electricity, water pump, and water supply in your RV before proceeding with the replacement of the electric element. Remember to refer to your owner's manual for specific instructions pertaining to your RV's unique configuration.
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Use a hot water heater element wrench to unscrew the element
Using a hot water heater element wrench to unscrew an RV electric element is a simple process, but it requires careful attention to safety. Before you begin, ensure the power supply to the water heater is turned off. If you're dealing with a gas heater, make sure the gas supply is shut off, too. It's also important to shut off the cold-water supply valve to the heater. While the entire tank doesn't need to be emptied, it's crucial to drain enough water to bring the water level below the heating element's position. This will prevent flooding and the risk of electrical shock.
Once the water level is safe, locate the access panel on the side of the heater. Remove any screws or fasteners securing the panel and set them aside in a safe place. With the access panel removed, you should be able to see the heating element and the wires connected to it. Take note of how the wires are connected, as you'll need to reconnect them later. Carefully disconnect the wires from the element using a wrench or pliers.
Now, you can use the hot water heater element wrench to unscrew the element. Place the hex-shaped end of the wrench over the hex-shaped backside of the element. Insert a screwdriver through the two holes on the opposite end of the wrench and use it as a handle to twist the wrench counterclockwise. As the element loosens, you can continue turning the wrench counterclockwise to unscrew it completely. Once the element is unscrewed, pull it out and set it aside.
When installing a new element, the process is reversed. Insert the new element, ensuring the rubber gasket is in place, and use the wrench to turn it clockwise until the element is securely tightened.
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Buy a replacement screw-in element with the same voltage
When replacing an RV electric water heating element, it is important to buy a replacement screw-in element with the same voltage as your previous one. This is because the voltage needs to be compatible with your RV's electrical system.
RV water heater elements are typically a standard size, fitting various makes and models of water heaters. However, it is crucial to verify the voltage, wattage, and length requirements for your specific RV water heater before purchasing a replacement element. You can find this information in your owner's manual.
For example, if your RV water heater requires a 120-volt screw-in element, you should purchase a replacement with the same voltage, such as the SU520789 120-volt screw-in electric heating element available online. This ensures compatibility and avoids potential electrical issues.
By following this instruction, you can be confident that your replacement screw-in element will have the correct voltage, making the installation process smoother and safer. Remember to also consult your owner's manual for any specific recommendations or guidelines regarding the replacement process.
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Turn the water pump and water supply back on
Once you have replaced the electric heating element of your RV water heater, you can turn the water pump and water supply back on.
Go back inside your RV and head to the electrical switch panels. Turn on the gas and electrical supply switches for your hot water tank. You can then turn the water pump and water supply back on.
Return to the kitchen and open the hot water faucet. Let it run until hot water comes out. The faucet will sputter for a few minutes while the tank refills.
If you replaced the hot water tank's anode rod, you can now screw it back in. If it was not replaced, be sure to replace it at the same time as the next heating element to extend the life of the water tank.
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Replace your hot water tank's anode rod
The anode rod in your hot water tank is essential for protecting the tank from corrosion. If the anode rod is consumed or used up, the tank will start to corrode. Replacing the anode rod is a simple task that can greatly extend the life of your water tank. Here is a step-by-step guide to replacing your hot water tank's anode rod:
Step 1: Check the anode rod's condition
Before replacing the anode rod, it is important to check its condition. In most cases, the hexagonal head of the rod is visible on top of the water heater. If you don't see the hex head, check your owner's manual as it may be under the water heater's sheet metal top or connected to the hot water outlet nipple. Some newer plastic-lined tanks do not have anode rods. If the anode rod is frozen in place by corrosion, you may need to use a spray lubricant to loosen it.
Step 2: Drain the water tank
Before removing the anode rod, you must first drain the water tank. Open the drain valve near the bottom of the tank and drain out several gallons of water. Be cautious as the water will be hot. Check the drained water for rust. If you see rusty flakes, it may be time to replace the entire water heater.
Step 3: Remove the old anode rod
If the hex head of the anode rod is set below the top of the heater, you will need a specific socket size to reach it. If it protrudes above the top, you can use any type of wrench. The hex head may be under a plastic cap, so uncover it first. Once you have the correct tool, loosen the anode rod by turning it counterclockwise and pull it out.
Step 4: Install the new anode rod
Purchase a new anode rod of the appropriate material for your water heater. If you have less than 44 inches of clearance above your water heater, install a flexible rod and tighten it with a socket and ratchet by hand.
Step 5: Refill and test the water heater
Fill the tank back up and check for leaks. Turn on the gas, electricity, water pump, and water supply, and test the heater. Open the hot water faucet and let it run until hot water comes out. The faucet may sputter at first while the tank refills.
By following these steps, you can replace your hot water tank's anode rod and help extend the life of your water heater.
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Frequently asked questions
Over time, old elements can accumulate mineral deposits from the water in the tank or just wear out from use. This can cause your element to stop heating your water efficiently or to stop working altogether.
Firstly, turn off the gas and electrical power switches for your hot water tank. Then, turn off the water pump and water supply. Open your RV’s kitchen hot water faucet to relieve pressure in the tank. Remove the tank’s anode rod and drain plug cap with a socket wrench. Use a hot water heater element wrench to unscrew the element and pull it out. Place the hex-shaped end of the element wrench over the hex-shaped backside of the element. Insert a screwdriver through the two holes on the opposite end of the wrench and use it as a handle to twist the wrench counterclockwise. Pull the heating element out when you loosen it all the way.
You will need a hot water heater element wrench, a socket wrench, and a screwdriver.
Replacement RV water heating elements are available at every RV dealer, as they are "high-demand" parts. They can also be purchased online from retailers such as Amazon.
Heating elements generally last 18-24 months, depending on usage and water quality. It is recommended to replace them at least every 24 months.
