RV has no water pressure: what to check and what it costs

Low or no water pressure is usually one of three things: a leak the pump cannot keep up with, a failing pump, or air in the system. Most repairs run $150 to $500 once the diagnosis finds the actual cause.

Check this first (ten minutes)

Listen to the pump. Running continuously without building pressure points to a leak somewhere downstream, or a check valve that is not holding. A pump that runs in short bursts and stops is closer to normal cycling.
Look for wet spots under sinks, under the rig near tank connections, and around the water heater. A leak that has been slowly dripping for a while is easy to miss until pressure drops noticeably.
Check if it’s every fixture or just one. A single low-pressure fixture points to a clogged aerator or a fixture-specific fault, not the pump or the main lines.
Try city water hookup instead of the pump, if available. If pressure is fine on city water but weak on the pump, the pump itself is the more likely suspect.
Check for air in the lines if the rig recently sat unused or was recently winterized/de-winterized. Running fixtures for a minute to purge air is a normal first step.

What is usually wrong

What you find	Likely cause	Fix and cost
Pump runs constantly, never builds pressure	Leak somewhere in the system	Find and repair leak, $150 to $400
Weak pressure at every fixture, pump cycles normally	Failing pump or clogged strainer	Pump replacement $250 to $500, or strainer clean, lower cost
Weak pressure at one fixture only	Clogged aerator or fixture fault	Usually under $150
Air sputtering, intermittent pressure	Air in the lines after sitting or servicing	Purge lines; often no cost if that’s all it is
Fine on pump, weak on city water hookup	Low pressure at the source or a bad regulator	Check the campground/city connection and your regulator
Wet spot found under the rig	Line, fitting, or tank connection leak	$150 to $400 depending on location

Those ranges are from the pricing page, on top of the $75 to $150 trip fee and $125 to $190 hourly labor.

Why this shows up after storage here

A rig that sits through a hot Bakersfield summer with water standing in the lines is prone to two things: heat-aged rubber seals in valves and fittings that start weeping small amounts, and, less often, a check valve inside the pump that has degraded. Neither is dramatic on its own, but together they are the most common reason a rig that had fine pressure before a long stint in storage comes back with a pump that runs constantly and never quite catches up.

What to expect on the call

Tell us whether the pump runs constantly or cycles normally, whether the problem is at every fixture or just one, and whether you have checked for a wet spot anywhere. We work on site across Bakersfield, Oildale, Rosedale, Shafter, Taft, Tehachapi, and the Kern River Valley. The repair cost calculator will price a range now.

Frequently Asked Questions

My pump runs constantly and never builds pressure. What's wrong?

Almost always a leak somewhere in the system that the pump cannot overcome, a failing check valve that lets pressure bleed back, or air in the lines after the rig sat unused. We pressurize and check systematically rather than assuming the pump itself is bad.

What does this repair cost?

A pump replacement is typically $250 to $500. A leak or fitting repair is usually $150 to $400. Which one you need depends entirely on where the diagnosis finds the actual fault, so we check before quoting.

Could stored water quality be the cause after a summer sitting?

Not pressure directly, but standing water through a hot Bakersfield summer can affect valve seals over time, and heat-aged rubber components are a common secondary cause of small leaks that show up as declining pressure.

Is low city water pressure at a campsite the problem instead?

Possibly, if this only happens when hooked to city water and not on the pump. Some campground and RV park connections run lower pressure than a home hookup; a pressure regulator at the inlet is worth using and checking.