How to Replace a Kitchen Faucet in Your RV

Replacing an RV kitchen faucet involves shutting off the water supply, disconnecting the old faucet, and securing a compatible replacement. Check the mounting openings, under-sink clearance, and supply connections before buying parts. After installation, flush the faucet as directed and inspect for leaks with the water running and the system pressurized.

How Do You Choose a Replacement Faucet?

Confirm that the new faucet fits your existing sink or countertop without modification. Check:

• Mounting Openings: Match the number, size, and spacing of the holes, or use an approved cover plate where appropriate.
• Countertop Thickness: Make sure the mounting hardware accommodates the surface.
• Clearance: Allow room for the spout, handle movement, and any pull-down hose or weight beneath the sink.
• Water Connections: Confirm that the supply fittings are compatible with your RV’s plumbing.

If adapters or plumbing changes are needed, identify the correct parts before removing the old faucet. Avoid forcing incompatible fittings together.

What Tools and Materials Do You Need?

• Compatible replacement faucet and supplied mounting hardware
• Tongue-and-groove pliers
• Basin wrench
• Shop towels and a shallow container
• Surface-compatible cleaner
• Replacement seals, supply lines, or adapters if required by the installation

Use the faucet manufacturer’s instructions for any additional tools, gasket, or sealing material.

How Do You Replace an RV Kitchen Faucet?

Step 1: Shut Off Water and Release Pressure

Turn off the RV water pump and shut off or disconnect city water. Turning off only one source may leave the plumbing pressurized.

Turn off the water heater’s heat sources and allow hot water to cool before opening the plumbing. Open the faucet in both hot and cold positions to release pressure.

If water continues flowing, identify and isolate the source before disconnecting any fittings.

Step 2: Disconnect the Lines and Remove the Old Faucet

Clear the cabinet beneath the sink. Place towels and a shallow container under the connections to catch residual water.

Label or photograph the hot- and cold-water connections, then disconnect them. Use pliers or a wrench only where appropriate, supporting the mating fitting so the plumbing does not twist.

Remove the faucet’s retaining nuts or mounting bracket with the appropriate tool. Support the faucet from above as the final hardware comes free, then lift it out.

Clean the mounting surface and inspect for damage before installing the replacement.

Step 3: Position and Secure the New Faucet

Install the supplied gasket, cover plate, or specified sealing material according to the faucet instructions. Do not add putty or sealant unless it is approved for both the faucet and mounting surface.

Feed the supply lines and mounting shank through the opening. Position the faucet over the sink, then install its mounting hardware.

Tighten as directed without overtightening. Confirm that the faucet remains aligned and the handle moves freely.

For a pull-down model, route the hose and install its weight as specified, keeping it clear of stored items and plumbing.

Step 4: Reconnect the Water Lines

Connect hot and cold supplies to the correct faucet inlets. Start threaded connections by hand to avoid cross-threading.

Use the specified tightening method for each fitting. Plastic swivel fittings, compression connections, and quick-connect fittings have different requirements.

Do not add thread tape or sealant to connections that seal with a washer or O-ring unless the manufacturer specifically requires it. Replace damaged seals rather than tightening harder to stop a leak.

Step 5: Restore Water, Flush, and Check for Leaks

Restore the water supply gradually while inspecting the connections beneath the sink.

Follow the faucet’s flushing procedure, including aerator or spray-head removal if specified. Run both hot and cold sides to clear installation debris.

Check for leaks:

• At each supply connection while water runs
• Around the faucet base during use
• Beneath the sink after closing the faucet and allowing pressure to build

If a leak appears, shut off the water and release pressure before correcting the connection. Retest until everything remains dry.

Confirm that the water heater is correctly filled and ready for service before restoring its heat sources.

Inspect the new faucet and under-sink connections again after the first use.