You can replace your RV hot water heater element quickly and efficiently with basic tools and safety precautions. Many users finish this task in about one hour, thanks to straightforward steps and clear instructions. Jinzhong Electric Heating and other heating element manufacturers design household appliance heating elements for easy installation and reliability. When you follow the right process, you restore hot water to your RV without hassle.
Step 1: Turn Off Power and Drain the Hot Water Heater
Before you begin any work on your RV’s hot water heater, you must ensure complete safety by disconnecting all power sources and draining the tank. This step prevents electrical shock, gas leaks, and water damage.
Disconnecting Electric and Gas Power
Turning Off the Electric Supply
You should always start by switching off the electric supply to your hot water heater. Locate the circuit breaker panel in your RV and flip the breaker that controls the water heater to the “off” position. If your unit has a dedicated switch, turn it off as well. This step eliminates the risk of electric shock while you work.
Shutting Off the Gas Line
If your hot water heater uses propane, close the main propane valve to stop the gas flow. You can usually find this valve near your propane tank. Turning off the gas supply ensures no gas leaks occur during maintenance. Always double-check that the gas is completely off before proceeding.
Stopping the Water Supply
Finding the Water Shut-Off Valve
Next, you need to stop water from entering the hot water heater. Locate the water shut-off valve, which is often near the water pump or along the main water line entering the RV. Turn the valve to the “off” position. If you are connected to city water, disconnect the hose from the RV.
Preventing Water Spills
To prevent water from spilling inside your RV, open a hot water faucet at a sink or shower. This action relieves pressure in the system and allows air to enter the lines, making draining easier. You should also briefly open a cold water faucet to ensure all pressure is released.
Tipp: Always allow the water in the tank to cool before draining. Hot water can cause severe burns.
Draining the Hot Water Heater Tank
Using the Drain Valve Safely
Draining the tank is a critical step. Follow this procedure to avoid water damage:
1. Confirm that both electric and gas supplies are off. 2. Open a hot water faucet inside the RV to relieve pressure and let the water cool. 3. Disconnect the city water supply and turn off the RV water pump. 4. Open the pressure relief valve on the tank to release any remaining pressure. 5. Use the correct tool to remove the drain plug, usually located at the bottom of the tank. 6. Allow the tank to drain completely. If water flow slows, gently clear the drain hole with a non-marring tool. 7. Once empty, close the pressure relief valve and reinstall the drain plug with plumber’s tape.
Handling Hot Water and Pressure
Never attempt to drain the tank when the water is hot or under pressure. Wait until the water cools to a safe temperature. Opening the pressure relief valve before removing the drain plug helps prevent sudden bursts of hot water. Always wear gloves and eye protection during this process.
Anmerkung: While the tank is empty, inspect for leaks, corrosion, or damaged wiring. This is a good time to check the anode rod and replace it if necessary.
By following these steps, you prepare your RV hot water heater for safe and effective element replacement.
Step 2: Remove the Old Hot Water Heater Element
Tools and Safety Gear Needed
List of Essential Tools
You need the right tools to remove the old element efficiently. Manufacturers recommend several options for this job:
- Camco wrench (Code: CAM09883) for 1-1/2 inch nuts, which allows you to use a screwdriver for extra leverage.
- Crescent wrench for the hex head of the element.
- Penetrating oil to loosen stuck elements.
- Breaker bar or extended breaker bar for additional leverage.
- Heavy-duty six-point socket (1/2 inch drive or larger) for stubborn elements.
- Volt meter to confirm the unit is disconnected from power.
Tipp: Always depressurize and drain the hot water heater tank before you begin. This step prevents electric shock and water damage.
Protective Equipment for Safety
You should protect yourself from common hazards during element removal. Use the following safety gear:
- Gloves to shield your hands from hot surfaces and sharp edges.
- Safety goggles to protect your eyes from debris.
- Fire extinguisher nearby for emergencies.
These precautions help prevent burns, cuts, and other injuries. Electric shock is the primary hazard, especially if the unit is not properly disconnected. Even low voltages can be dangerous, particularly if your skin is wet. Ground Fault Circuit Interrupters (GFCI) provide extra protection by cutting power if leakage currents are detected.
Accessing the Hot Water Heater Element
Removing the Access Panel
You must first locate and remove the access panel to reach the element. Most RV models require you to:
- Allow the hot water heater system to cool completely before starting.
- Remove or pull out the water heater unit if direct access is limited.
- Disconnect water lines to create space for working.
- Remove nearby components, such as drawers, to improve access.
Anmerkung: Never operate the water heater without a full tank of water. This practice prevents damage to the Heizelement.
Locating the Element Inside the Heater
Once you remove the access panel, you will see the element mounted inside the tank. The element usually sits behind wiring and may be partially obstructed by other parts, such as the burner tube on Suburban models. If necessary, remove these parts to gain clear access.
| Schritt | Aktion |
|---|---|
| 1 | Confirm the tank is drained and depressurized |
| 2 | Remove the access panel and any obstructing components |
| 3 | Locate the element, typically secured with a large nut or hex head |
Taking Out the Old Element
Disconnecting Wires Safely
You must disconnect the wires attached to the element before removal. Follow these steps:
- Use a volt meter to confirm no power is present.
- Carefully label or photograph wire connections for easy reassembly.
- Loosen and remove the wire terminals using a screwdriver.
Alert: Improper handling or faulty wiring can cause breakers to trip or create fire hazards. Stop work and call a professional if you notice signs of structural failure, gas leaks, or persistent electrical issues.
Unscrewing and Removing the Element
After disconnecting the wires, you can unscrew and remove the element:
- Apply penetrating oil if the element feels stuck.
- Use the Camco wrench, crescent wrench, or heavy-duty socket to loosen the element.
- Turn the element counterclockwise until it comes free.
- Prepare for residual water to spill out when the element is removed. Have cleaning materials ready.
Electric heating elements in RV water heaters last for years, but they often fail due to dry firing or mineral buildup. If you see physical damage or rust, or if electric heating does not work while gas heating does, you should replace the element. Testing resistance with a multimeter can confirm if the element is faulty.
Tipp: Regularly drain and flush the tank to remove sediment and extend the lifespan of your hot water heater element.
Step 3: Install the New Hot Water Heater Element
Preparing the New Element for Installation
Checking Voltage and Wattage Compatibility
Before you install the new element, you need to confirm that it matches your RV’s requirements. Using the wrong part can cause electrical faults or poor heating performance. Always compare the specifications of your new element with your old one. The following table outlines the key compatibility factors you should check:
| Compatibility Factor | Einzelheiten |
|---|---|
| Model and Brand | Match the element to your RV water heater’s exact model and brand. |
| Voltage and Wattage | Ensure the new element’s electrical ratings are identical to the original. |
| Element Length and Thread | Measure the old element’s length and thread type for a proper fit. |
| Mounting Style | Confirm if your heater uses a screw-in or bolt-on element. |
| Smart/Digital Compatibility | For advanced models, check if the element supports smart or digital features. |
Tipp: Consult your installation manual or the manufacturer’s compatibility chart if you are unsure. Using an incompatible element may void your warranty or damage your hot water heater.
Inspecting for Damage or Defects
Examine the new element closely before installation. Look for any visible cracks, dents, or bent threads. Check the gasket for flexibility and integrity. If you notice any defects, do not proceed with installation. Contact the supplier for a replacement. Installing a damaged element can lead to leaks or electrical hazards.
Installing and Securing the Element
Positioning the New Element Correctly
Insert the new element into the tank opening. Make sure the gasket sits flat against the tank surface. Align the threads carefully to avoid cross-threading. Hand-tighten the element until it feels snug. This step ensures a proper seal and prevents leaks.
Tightening and Sealing the Element
After hand-tightening, use a socket wrench to secure the element. Turn it an additional half turn, or about 180 degrees. Avoid overtightening, as this can damage the tank or the threads. Manufacturers recommend tightening to approximately 22 foot-pounds of torque for a secure fit. If you marked the orientation of the old element, align the new one to the same position. This practice helps maintain a proper seal and fit.
- Tighten by hand until snug.
- Use a socket wrench for an extra half turn.
- Do not overtighten to prevent damage.
Anmerkung: A properly sealed element prevents leaks and ensures efficient operation.
Reconnecting and Closing Up
Attaching Wires Properly
You must reconnect the wires to the new element before closing the access panel. Follow these steps for a safe and reliable connection:
- Confirm that all power sources remain off.
- Attach the AC power wires to the new element’s terminals. The wire color does not matter for which screw you use.
- Tighten each screw one quarter turn past hand tight. Avoid overtightening.
- Double-check that all connections are secure and that no wires are loose or exposed.
Always keep the power off during wiring to prevent electric shock.
Replacing the Access Panel
Once you finish wiring, replace the access panel over the element. Secure it with the original screws or fasteners. Make sure the panel fits tightly to protect the wiring and element from moisture and debris. A properly closed panel helps maintain safety and extends the life of your hot water heater.
Refilling the Tank and Restoring Power
Refilling with Water
After you install the new element and secure all connections, you must refill the tank before restoring power. This step prevents dry firing, which can damage the new element. Begin by checking the water line gaskets. Inspect each gasket for signs of wear or cracks. Replace any that look damaged to prevent leaks.
Next, confirm that you have reconnected all wiring correctly. If you feel unsure, consult your RV’s manual or wiring diagram. Proper wiring ensures safe operation and prevents electrical faults.
Now, locate the bypass valves near your water heater. Flip these valves to allow water to flow into the tank. Open a hot water faucet inside your RV. This action lets air escape and helps the tank fill evenly. Watch the faucet. When water flows steadily, you know the tank is full.
Tipp: Place paper towels around the heater area. This simple trick helps you spot leaks quickly as the tank fills.
Turning Power and Gas Back On
Once you confirm the tank is full and free of leaks, you can restore power and gas. Follow these steps for a safe restart:
- Double-check that all fittings and connections are tight.
- Turn the electric breaker for the water heater back to the “on” position.
- If your unit uses propane, open the main gas valve.
- Switch the water heater control panel to the desired heating mode.
- Monitor the system for several hours. Check for leaks or unusual noises.
- If you notice any leaks, tighten the fittings or adjust the water lines to relieve tension.
You should never turn on the heating element before the tank is full. Doing so can cause immediate damage. Always monitor the area for leaks during the first few hours of operation. If you find moisture or drips, address the issue right away to avoid water damage.
Anmerkung: Regularly check the area around your water heater after any maintenance. Early detection of leaks protects your RV from costly repairs.
Testing Your RV Hot Water Heater After Replacement
After you install a new element, you need to verify that your RV’s water system works safely and efficiently. Careful testing ensures you avoid future problems and confirms that your repair succeeded.
Checking for Proper Heating
Testing Water Temperature
Start by turning on a hot water faucet inside your RV. Let the water run for several minutes. Place your hand under the stream and check if the water heats up to the expected temperature. If you notice only cold water, you may need to investigate further. Use a thermometer for a more precise reading. The water should reach a consistent temperature suitable for showers or washing dishes.
You can also use these steps to confirm proper function:
- Switch your water heater to propane mode. If you get hot water, you know the tank and plumbing are working. This isolates any issues to the electric side.
- Switch back to electric mode. Wait 20–30 minutes, then test the water temperature again.
- If the water remains cold, check the breaker dedicated to the water heater. A tripped breaker often signals a faulty element or wiring issue.
- Use a multimeter to measure voltage at the heating element. You should see 120V for most RV models.
- Inspect the thermostat and reset buttons. Press the reset if needed.
Tipp: If you need to mix in a lot of cold water to avoid scalding, your heater may be working too well. Adjust the thermostat for safety.
Listening for Unusual Sounds
Listen closely as the water heater operates. You should hear only a gentle hum or the sound of water heating. Unusual noises, such as popping, hissing, or crackling, may indicate mineral buildup or trapped air. Persistent loud sounds can signal a problem with the new element or internal tank issues. If you hear anything out of the ordinary, turn off the unit and inspect the installation.
Inspecting for Leaks or Issues
Checking Around the Element
Carefully examine the area around the new heating element. Look for any signs of water pooling or dampness. Leaks often occur at the threads where the element screws into the tank. Poor connections, damaged gaskets, or improper tightening can cause water to escape. Use a flashlight to inspect hard-to-see spots. If you find moisture, tighten the element slightly or replace the gasket.
Common causes of leaks include:
- Faulty valves or loose fittings.
- Corrosion at the element threads or socket.
- Cracks in the tank, especially in older or aluminum-clad models.
- Worn or missing anode rods in Suburban heaters.
If you notice water leaking from the tank itself, you may have a crack or severe corrosion. These issues often require professional repair or complete tank replacement.
Watching for Drips or Moisture
After you restore power and fill the tank, place paper towels or a dry cloth under the heater. Check these materials after several hours. Even a small drip can signal a problem that needs attention. Inspect the drain valve, pressure relief valve, and inlet/outlet connections. Leaks at these points often result from loose fittings or improper winterization.
If you see rust, fractures, or persistent moisture, address the issue immediately. Proper maintenance and prompt repairs help prevent costly water damage and extend the life of your RV’s hot water system.
Troubleshooting Hot Water Heater Problems
No Hot Water After Replacement
Double-Checking Power and Connections
If you notice that your water heater does not produce hot water after replacing the element, you should start by verifying all power and connection points. Use the following steps to systematically check for issues:
- Confirm the water heater power switch is turned on.
- Inspect the breaker feeding the water heater to ensure it has not tripped.
- Purge air from the tank after refilling to prevent airlocks.
- Check for 120V AC power at the ON/OFF switch.
- Press the reset button located in the control panel.
- Turn off power and inspect all wiring connections for damage or overheating.
- Test the 120V thermostat switch and heating element for continuity using a multimeter.
- Replace any faulty thermostat switch or heating element as needed.
- Reconnect all wires and covers securely.
- Turn on the 120V power switch and wait to confirm hot water returns.
If you find insufficient voltage at the ECO switch or control board, you may need to replace the control board. Always disconnect power and wiring harnesses before removing any electronic components.
Testing the Element with a Multimeter
You can use a multimeter to test the heating element for continuity. Set the multimeter to the resistance (ohms) setting. Touch the probes to the terminals of the heating element. If you see a reading close to zero, the element has continuity and should function. If the reading is infinite or very high, the element is defective and requires replacement. You should also test the thermostat and ON/OFF switch for continuity. Replace any component that shows high resistance or fails to register continuity.
Dealing with Leaks or Drips
Tightening the Element
Leaks often occur when the heating element is not tight enough. If you notice water pooling or dripping near the element, shut off the cold water intake to stop leaks temporarily. Test the water heater cold and under pressure to identify when leaks occur. Remove the water heater if necessary and tighten the heating element. This action usually resolves leaks caused by loose fittings.
- Inspect the water heater area for signs of water pooling or dripping.
- Address leaks immediately by tightening loose connections.
- Confirm the heating element seat is not leaking after replacement.
- Check all fittings and high-pressure valves for drips and tightness.
Replacing Gaskets or Seals
If tightening the element does not stop the leak, inspect the gasket for cracks or wear. Replace any damaged gasket or seal. Drain the tank before removing and replacing the heating element. Regularly flush the tank to prevent mineral buildup and corrosion. Inspect and replace anode rods to extend the water heater’s lifespan and prevent leaks.
- Ensure the heating element seat is not leaking.
- Check and tighten fittings such as cone washers in plastic fittings attached to brass check valves.
- Pressurize the tank with city water to detect pinhole leaks.
- Verify the operation of the over-temperature/over-pressure valve by relieving pressure and resealing.
Aluminum tanks can corrode internally and externally, leading to pinhole leaks. Tighten fittings to eliminate leaks, especially around the heating element and check valves.
Wann Sie einen Fachmann hinzuziehen sollten
Signs of Electrical Problems
If you still do not have hot water after replacing the heating element, check for power at the element using a multimeter. Inspect the thermostat for faults, such as lack of continuity or a tripped reset button. Verify that breakers and fuses are intact. Ensure bypass valves are correctly set. If these checks do not resolve the issue, or if the new element is still faulty, you should contact a professional. Complex electrical problems require specialized tools and expertise.
Persistent Leaks or Malfunctions
Persistent leaks or tank damage often require professional repair. If the water heater tank is leaking, or if you suspect the thermostat is bad, professional assistance is recommended. Separating the tank from the unit can be difficult and time-consuming. In cases where the tank is very old or the repair process seems overwhelming, calling a professional ensures the job is done correctly and safely.
When you encounter complex repairs or persistent issues, professional service protects your RV and ensures reliable operation.
Safety Tips for Hot Water Heater Replacement
Electrical Safety Precautions
Avoiding Electric Shock
You must prioritize electrical safety when working on your RV’s water heater. Always disconnect the power supply before you begin any repairs. Confirm the breaker is off and use a volt meter to verify that no electricity flows to the unit. Never touch exposed wires with wet hands. If you feel unsure about the wiring, consult your RV’s manual or seek professional assistance.
Tipp: Place a warning sign near the breaker panel to remind others not to restore power while you work.
Using Insulated Tools
Insulated tools help protect you from accidental electric shock. Choose screwdrivers and wrenches with rubber-coated handles. These tools reduce the risk of current passing through your body. Store your insulated tools in a dry location and inspect them for damage before each use.
| Tool Type | Sicherheitsmerkmal |
|---|---|
| Screwdriver | Rubber handle |
| Wrench | Insulated grip |
| Volt meter | Protective casing |
Water and Heat Safety
Preventing Burns
Hot water and steam can cause serious injuries. Allow the water heater tank to cool before you drain or open it. Wear gloves and safety goggles to shield your skin and eyes from splashes. Open the pressure relief valve slowly to release any remaining steam. Never rush this process.
Alert: Burns often occur when you underestimate the temperature inside the tank. Always test the water temperature before handling any components.
Handling Hot Water Carefully
You should handle hot water with caution. Open a hot water faucet to relieve pressure before draining the tank. Use a bucket or hose to direct water away from your workspace. Keep children and pets away from the area during maintenance. If you spill hot water, clean it up immediately to prevent slips and injuries.
General Maintenance Reminders
Keeping the Area Clean
A clean workspace helps you avoid accidents and makes maintenance easier. Remove clutter and wipe up any spills before you start. Organize your tools and supplies so you can reach them quickly. Dispose of old parts and packaging properly.
- Store tools in a designated container.
- Use paper towels to spot leaks.
- Sweep the area after finishing repairs.
Regular Inspections
Routine inspections extend the lifespan of your RV’s water heater. You should flush and rinse the tank seasonally, especially during winterization and de-winterization. Inspect and replace the anode rod regularly if your model includes one. Even if your heater does not have an anode rod, drain and rinse the tank each season to maintain good condition.
- Drain the tank after every trip unless you plan another trip soon.
- Never drain the heater when water is hot or under pressure.
- Inspect the anode rod every time you drain the tank and replace it when it is 75% consumed.
- Periodically flush the tank to remove debris.
- Sanitize the RV water system every spring or when you notice odors.
- Check the operation of the 12-volt water pump with potable water in the fresh water holding tank.
Annual inspection and replacement of the anode rod protect your tank from corrosion. These steps prevent buildup and damage, helping your water heater last longer.
Tools, Supplies, and Maintenance for Your RV Hot Water Heater
Must-Have Tools and Supplies
Wrenches, Screwdrivers, and Multimeter
You need the right tools to maintain and replace components in your RV’s water system. Wrenches and screwdrivers allow you to remove access panels and tighten fittings. A multimeter helps you test electrical connections and confirm safe operation. Pliers and a flashlight make it easier to reach tight spaces and inspect for damage. You should also keep a pressure relief valve tool on hand to safely release pressure before servicing.
Always allow the tank to cool before you begin any maintenance. Open the pressure relief valve slowly to avoid sudden bursts of steam or water.
Essential tools for your toolkit:
- Wrenches (including shallow well sockets for drain plugs)
- Screwdrivers (various sizes)
- Multimeter
- Pliers
- Flashlight
- Pressure relief valve tool
- Water heater heating element tool
Replacement Elements and Gaskets
You should stock replacement heating elements and gaskets that match your RV’s specifications. Use manufacturer-recommended plastic drain plugs for Dometic aluminum tanks to prevent galvanic corrosion. Avoid generic metal or plastic plugs not rated for RV use. Keep RV sealant and appliance-specific parts, such as anode rods, available for routine repairs.
Recommended supplies:
- Replacement heating elements
- Gaskets and drain plugs (plastic for aluminum tanks)
- RV sealant
- Anode rods (magnesium for standard use, aluminum for hard water)
- Water heater flush wand (for sediment removal)
Where to Find Replacement Parts
Local RV and Hardware Stores
You can find many replacement parts at local RV dealerships and hardware stores. These locations often carry wrenches, screwdrivers, multimeters, and basic supplies. Staff can help you select the correct parts for your specific model. You may also find anode rods, drain plugs, and sealants designed for RV use.
Online Retailers and Brands
Online retailers offer a wide selection of RV water heater elements and accessories. For example, dernord.com provides water heater elements rated at 120V and 1440W, which match common RV requirements. You can order these products in the United States, Canada, Australia, and other countries. Online shopping gives you access to international shipping and a broader range of brands.
When ordering online, always verify compatibility with your RV’s make and model. Review product specifications before purchasing.
Preventive Maintenance Tips
Regular Element Checks
You should inspect the heating element and anode rod regularly. Clean the anode rod to prevent corrosion and replace it when worn down by half or more. Test the pressure relief valve to ensure it works properly. Check for leaks around fittings and repair them promptly.
Flushing the Tank and Using Water Filters
Flush the tank at least once a year to remove sediment and mineral buildup. Use a water heater flush wand attached to a garden hose for thorough cleaning. If you travel in areas with hard water, consider installing a water filter to reduce mineral deposits. Proper winterization protects your system from freezing damage during storage.
Preventive maintenance checklist:
- Inspect and clean the anode rod annually.
- Flush the tank to remove sediment.
- Clean the burner assembly for optimal performance.
- Test the pressure relief valve.
- Check for leaks and seal them immediately.
Regular maintenance extends the life of your RV’s water system and helps you avoid unexpected repairs.
You can replace your RV hot water heater element in just three steps. With the right tools and a focus on safety, you make the job straightforward and efficient. Regular maintenance keeps your hot water heater in top condition for every journey. Take pride in your work and enjoy reliable hot water on all your RV adventures.
Consistent care gives you peace of mind and helps prevent unexpected issues.
FAQ
How often should you replace your RV hot water heater element?
You should inspect the element every year. Replace it if you notice corrosion, mineral buildup, or poor heating performance. Regular checks help you avoid unexpected failures during trips.
Can you use any heating element in your RV water heater?
No. Always use an element that matches your RV water heater’s voltage, wattage, and thread type. Check your owner’s manual or the old element’s specifications before purchasing a replacement.
What tools do you need for replacing the element?
You need a socket wrench, screwdriver, multimeter, and safety gloves. A Camco wrench or breaker bar can help with stubborn elements. Keep a flashlight handy for better visibility.
Is it safe to replace the element yourself?
Yes, if you follow safety steps. Always disconnect power and let the tank cool before starting. Wear gloves and goggles. If you feel unsure about electrical work, contact a professional.
Why does your new element still not heat water?
Check the power supply, thermostat, and wiring connections. Use a multimeter to test the element for continuity. If all parts work and you still have no hot water, seek professional help.
How do you prevent leaks after installing a new element?
Tighten the element securely, but do not overtighten. Always use a new gasket. After installation, fill the tank and check for drips. Replace any worn or damaged seals immediately.
