Same-day mobile RV repair from A1 RV Repair's nationwide network. Call (866) 623-1340 for a quote.

RV Plumbing & Water System Repair

Water heater swaps, faucet and toilet replacements, water pump diagnosis, fresh / gray / black tank repair, PEX leak chase, and pressurized leak detection. Mobile, on-site, flat-rate quoted by phone before we dispatch.

About 70% of the plumbing calls we run trace back to one of three things: a failed water pump, a leaking PEX fitting that finally let go, or a water heater that hasn't worked in two seasons but you didn't realize because you've been on shore water and warm Gulf supply. RV plumbing is house plumbing crammed into a vehicle that bounces and bakes - things that would last 20 years in a kitchen wear out in 5-8 years on the road. We carry the most-replaced parts on every truck so most calls finish in one visit.

What exactly gets fixed in RV plumbing service?

Water heater swaps, faucet replacements, pump replacements, and leak diagnostics are our bread and butter. We pull out failed Atwood or Suburban water heaters and install matching units. We replace corroded kitchen and bathroom faucets with durable OEM equivalents.

Fresh water pumps that won't prime get swapped with tested Shurflo or Aquajet replacements. When you've got a mystery leak, we use a regulated 50 PSI hold test to find where water is escaping - under cabinets, through wall penetrations, or at tank connections.

Gray tank valve repairs and black tank seal replacements happen regularly. We also chase pinhole leaks in PEX or copper runs, often caused by vibration, corrosion, or age. Average turnaround on straightforward jobs is same-day.

Additional RV plumbing services we provide

Nine specialized plumbing repairs - all done at your location, all one-visit fixes when possible. Click any service for full details, pricing tables, and FAQs.

RV water heater swap on a Class A motorhome

Water Heater Repair & Replacement

Atwood, Suburban, Dometic gas/electric swaps. RecPro and Furrion tankless conversions. Annual flush + anode rod for hard water.

Includes
  • 6-gal & 10-gal swaps
  • Tankless conversion
  • Anode rod / flush
  • Gas valve repair
  • DSI module
  • Element & thermostat
View water heater service
Kitchen faucet replacement in a fifth wheel galley

Faucet Repair & Replacement

Kitchen, bath, and exterior shower faucets - cartridge rebuilds plus full swaps for high-flow brands.

Includes
  • Kitchen faucet swap
  • Bath faucet swap
  • Cartridge rebuild
  • Sprayer hose
  • Exterior shower
  • Outdoor kitchen
View faucet service
PEX line repair underneath an RV

Pipe Repair & Replacement

Push-fit and crimp PEX repair on 1/2 and 3/8, plus copper and PVC drain runs. We carry the tooling on every truck.

Includes
  • PEX push-fit repair
  • PEX crimp repair
  • Copper line repair
  • PVC drain runs
  • Slide-out flex line
  • Whole-system reroute
View pipe repair
Shurflo water pump replacement in an RV bay

Water Pump Replacement

Shurflo Revolution, Aquajet, and Flojet swaps. Accumulator-tank installs to smooth pump pulsing on 30-amp rigs.

Includes
  • Shurflo swap
  • Aquajet swap
  • Flojet swap
  • Accumulator install
  • Pump strainer clean
  • Pressure switch
View water pump service
Black tank repair underneath a fifth wheel

Tank Repair (Fresh / Gray / Black)

Cracked-tank patching, baffle repair, sensor cleaning, and full tank replacement when patching makes no sense.

Includes
  • Fresh tank patch
  • Gray tank repair
  • Black tank repair
  • Sensor cleaning
  • Baffle repair
  • Full tank swap
View tank repair
Black tank flush valve replacement on an RV

Tank Valve & Macerator Replacement

Black-tank flush valves, gray-tank gate valves, and Sani-Con / Drain Master macerator pumps. Same-visit on most calls.

Includes
  • Black flush valve
  • Gray gate valve
  • Macerator pump
  • T-handle rod
  • Termination cap
  • Sewer hose support
View tank valve service
Emergency RV plumbing leak at a Florida campground

Emergency Plumbing Leak Repair

Active leaks anywhere we cover. Cut city water, kill the pump, call (866) 623-1340. We dispatch the closest tech with PEX and a vacuum.

Includes
  • Active leak triage
  • Pressure isolation
  • Emergency PEX repair
  • Wet-vac extraction
  • Drying setup
  • Same-day return
View emergency service
Toilet replacement on a fifth wheel - Dometic 310 swap

Toilet & Bathroom Service

Dometic 310, Thetford Aqua-Magic, and Dometic 510 swaps plus shower-valve repair, foot-pedal kits, and ball-valve seal replacement.

Includes
  • Dometic 310 swap
  • Thetford swap
  • Ball-valve seal kit
  • Foot pedal repair
  • Shower valve
  • Sprayer install
View toilet service
RV winterization antifreeze pump-through

Winterization & De-Winterization

Antifreeze pump-through, blow-out, and seasonal recommissioning. Most rigs ready in 90 minutes flat.

Includes
  • Antifreeze pump
  • Air blow-out
  • Drain low points
  • De-winterize sanitize
  • Pressure check
  • Storage prep
View winterization

Common RV plumbing pricing

Flat-rate, written quote at your site before any work starts. Prices include parts, labor, and on-site dispatch.

RepairParts / BrandOn-Site TimeFlat-Rate Range
Water heater replacement (6-gal)Suburban / Atwood3-4 hours$785 - $1,250
Water heater replacement (10-gal)Atwood / Suburban3-4 hours$895 - $1,395
Tankless conversionRecPro / Furrion4-6 hours$1,150 - $1,950
Annual water heater flush + anodeVinegar / aluminum or magnesium rod45 min$145 flat
Water pump replacementShurflo / Aquajet / Flojet1-2 hours$325 - $525
PEX fitting repair (per location)Push-fit / crimp30-60 min$145 - $285
Toilet replacementDometic 310 / Thetford1-2 hours$385 - $685
Faucet replacement (kitchen / bath)Most brands45-90 min$185 - $385
Black tank flush valveOEM gate valve1-2 hours$245 - $425
Pressure leak test + diagnosis50 PSI hold test45 min$185 flat

Flat rate before we roll

A1 RV Repair quotes a phone range before scheduling, then writes you an exact quote at your site before turning a wrench. No hourly creep, no after-the-fact "oh by the way," no diagnostic surcharge buried at the bottom of the invoice.

How fast can you get to my RV if something breaks?

In our covered metros core areas, we target 2-4 hour emergency response. Because we're mobile-only - no shop, no waiting room - we roll directly to you. We carry common parts: Atwood and Suburban water heater units, Shurflo pump assemblies, faucet cartridges, sensor probes, tank valves, and pressure-test gear.

Most emergency calls finish same-day. Simple fixes (dead pump, clogged line, bad sensor) often resolve in under 2 hours.

Longer jobs (full heater swap, tank valve disassembly) might run 4-6 hours. For RV owners outside our service footprint, our nationwide partner network connects you with a certified mobile tech.

What happens after we fix your plumbing?

We pressure-test the entire system to 60 PSI before we leave, provide a 90-day workmanship warranty, and give you documentation of what was done. Every water line gets pressurized. Every connection gets checked for drips.

We document photos of work, parts installed, and test results. The 90-day window covers any failure traceable to our install or repair - if a new faucet cartridge leaks, we replace it free. Parts manufacturer warranty runs separately (typically 1-2 years), and we register Suburban / Dometic components in your name so you own the coverage.

Frequently asked questions about rv plumbing

How much does a water heater swap cost for a typical RV?

An Atwood to Dometic swap runs $1,100-$1,600 including removal, disposal, the new unit, install hardware, and a pressure flush of the lines once the unit is set. The variance comes from heater size (6-gallon vs 10-gallon), whether we're upgrading you to a different brand, and whether the bypass valves and anode rod need replacing while we have the lines open.

We quote flat-rate by phone after a few questions about your rig and current setup, so the number on the invoice matches the number you heard. If we find rot in the wood frame around the heater bay during teardown, that adds to the total for a frame patch - we call you before continuing so there are no surprises.

Can you get to my RV in an emergency if I'm stranded?

In our core our covered metros service areas, we target a 2-4 hour response for emergency calls - a burst pipe, a water heater leak flooding a cabinet, or a pump failure that leaves you without water are all situations we treat as urgent. When you call, we ask a few quick questions to understand what's actively leaking or failing so we know exactly what parts and fittings to pull from the truck before we roll.

Outside those two regions, we dispatch through our nationwide certified-tech partner network, which covers most of the country. Coverage and response time vary by location, so confirm your area when you call. In the meantime, if water is actively coming in, shut your main water valve and cut power to the water heater to prevent dry-fire damage while you wait.

What does pressure testing actually find that I can't see?

Pressure testing at 60 PSI reveals micro-cracks, pinhole corrosion, and loose push-fit fittings that won't drip at the trickle pressure of a campground hookup but will fail the moment you run two fixtures at once or your pump cycles hard. The damage we find most often is in PEX runs behind interior walls, under holding tanks, and in the belly pan - spots where road vibration works connections loose and UV degradation softens the line over time without any visible sign on the surface.

On-site, we charge the system, isolate sections with shutoffs, and watch a calibrated gauge for pressure drop over several minutes to pinpoint exactly which zone is losing integrity before we ever open a wall. Catching a pinhole now costs far less than pulling soaked cabinets or subfloor after a fitting lets go at 2 a.m.

Will you install a different brand water heater than what I have?

Yes, we install replacement water heaters across brands regardless of what came from the factory. If your Atwood has failed, a Dometic is often a practical same-price upgrade, and we walk you through the tradeoffs before ordering anything.

Our recommendation depends on how you use the rig - full-timing in cold climates calls for different specs than seasonal camping - not on brand preference. All standard RV water heaters share the same LP and 120V connections and fit the same cutout dimensions, so a brand swap rarely requires modifications. The one exception is venting: some units run direct-vent rather than combustion-air-from-the-bay, and if your current setup isn't compatible, we account for that in the quote before we start.

What warranty do I get after you repair my plumbing?

All labor we perform carries a 90-day workmanship warranty - if something we touched fails because of how it was installed or fitted, we come back and make it right at no charge. Parts carry their own manufacturer warranties, which typically run one to two years depending on the component and brand.

For Dometic components, we register the part in your name at time of install and leave you the documentation, so the coverage follows you and your rig, not us. We also photograph and log every repair with part numbers and dates, which matters if you ever need to file a warranty claim or sell the rig. If a part fails within the manufacturer window but outside our 90-day labor window, we coordinate the warranty replacement and charge only for the return labor, not the part.

Can you work on my RV while I'm parked in a campground or on the road?

We work wherever your rig is parked - campgrounds, RV parks, driveways, storage lots, or roadside pull-offs with safe vehicle access. When we arrive, we assess the problem on-site, pull what we need from the truck, do the repair, and pressure-test or function-test before we leave so you know the fix held.

You don't have to relocate the rig or find a shop with an open bay. For plumbing jobs specifically, we'll use the campground water hookup or an onboard tank fill to run a live pressure test once the repair is done. The main limitation is access - if a repair requires dropping a slide room or opening a belly pan in a space too tight to maneuver, we'll tell you upfront and find a workable spot nearby.

My black tank sensor is stuck full even after pump-out. Is it worth fixing?

Yes, it is worth fixing, and the sensor itself is usually not the problem. Most stuck "full" readings come from waste buildup coating the probe tips inside the tank wall, not a failed sensor.

Before replacing anything, we flush the tank with a wand and a few cycles of clean water to clear the probe faces - that alone resolves the issue about half the time. If the probes are genuinely corroded or cracked, sensor replacement runs $200-$350 and takes about 30 minutes once the tank is clear. The reason to handle it early is that a stuck full reading makes it easy to miss a real overflow condition or a slow drain caused by a partially closed knife valve, both of which turn into much bigger repairs if you let them go.

Are you RVIA certified and will my manufacturer honor warranty work you do?

Many of our techs hold RVIA and RVDA certifications, and the rest bring years of hands-on RV repair experience. On every job we use OEM-equivalent or OEM parts, document work with part numbers and serial numbers, and register components in your name - all of which matters when you need a paper trail for a warranty claim.

For component warranties (water pump, water heater, pressure regulator), the claim runs through the manufacturer, not the RV builder, so our repair work doesn't affect your ability to file. Where it gets more nuanced is the coach warranty from your RV manufacturer - if your rig is still under a full factory warranty, ask us before we open anything, because some manufacturers require dealer-authorized labor for covered systems. We'll tell you honestly whether it makes more sense for us to do the job or route you through a dealer for that specific line item.

Top cities we serve for this service

Same flat-rate pricing in every city. Same RVIA-certified mobile crew. Same parts-on-truck approach so most calls finish in one visit.

Ready to get your RV fixed?

Call live Monday through Saturday 7 AM to 7 PM. Emergency dispatch nights and weekends. Flat-rate quote before the truck rolls.

Call (866) 623-1340 Now
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