Should you repair or replace your pressure washer?
Updated August 2026
← Every repair-or-replace call
On a gas pressure washer, fix the pump seals, unloader, hose, or carburetor for $30–120 while the engine still runs; on an electric unit, a failed pump usually means buying a new machine, because the repair tops half of a $120–400 washer. The two formats age differently. Electric washers average 3–5 years of homeowner use and carry sealed pumps that nobody rebuilds economically. Gas washers reach 5–10 years, run serviceable axial or triplex pumps, and cost $300–800 to replace, which keeps their repair window open much longer.
The short version
Ask what actually broke before you shop for anything. An engine that starts and holds rpm is most of a gas machine's value, and a varnished carburetor from stale fuel is a $30–60 kit or a $60–100 shop clean, never a reason to replace. Pump faults follow a hierarchy from free to costly: a worn nozzle or a clogged inlet screen costs nothing, a $20–50 unloader valve cures most pressure surging, and a $30–80 seal kit stops the drips. A pump head cracked by a hard freeze is the break point. Fitting a $100–250 replacement pump still passes the 50% rule on a gas unit, but that same failure on an electric washer costs half the machine, so buy the machine.
Your situation, decided
| Situation | Verdict | Why |
|---|---|---|
| Gas unit will not start after storage | Repair | Stale fuel and a varnished carburetor; a $30–60 kit or a clean |
| Pressure surges or pulses at the wand | Repair | Usually a $20–50 unloader or a worn nozzle, not the pump |
| Water dripping from under the pump | Repair | A $30–80 seal kit; keep running it and the bearings go next |
| Pump cracked by freezing, gas unit under 5 years | Repair | A $100–250 pump on a $300–800 machine still clears the 50% rule |
| Electric unit with a dead or cracked pump | Replace | The pump repair passes half of a $120–400 washer |
| Engine burns oil or has lost compression | Replace | A short block costs more than a new machine on the shelf |
What each path costs
Repairs typically run $30–120; a replacement is $120–400 electric, $300–800 gas installed. Electric pressure washers last 3–5 years and gas units 5–10. Repair gas machines while the engine is sound; on an electric washer, a pump failure ends it. Price your own number on the home maintenance cost calculator before you commit either way.
The repair-or-replace call is easy when you know the unit's age and service history. OnOtto keeps both, plus the maintenance that delays this decision for years.
Start your home's service log, freeFrequently asked questions
Why does my pressure washer pulse instead of holding steady pressure?
Work the cheap causes first. A partly blocked nozzle, a clogged inlet screen, or a garden hose that cannot deliver enough water all make the pump surge, and none of those cost a dollar to correct. Next is the unloader valve, a $20–50 part that stops regulating bypass flow and is the classic pulsing culprit. Worn pump valves or seals come last, at $30–80. Because the fixes run from free to modest in that order, follow the sequence rather than assuming the pump has failed.
Is a bolt-on replacement pump worth buying?
On a gas machine, frequently. A replacement axial or triplex pump costs $100–250 and mounts to the existing engine, keeping a $300–800 unit working for several more seasons. Match the shaft diameter, the mounting pattern, and the gpm and psi rating to the engine, and note that the two pump types differ in service life. On an electric washer the answer flips: the pump is often molded into the assembly and the part alone approaches half the price of a new unit.
How do I stop the pump from cracking over winter?
Get the water out and put pump saver in. Water trapped in the pump head expands as it freezes and splits aluminum or plastic, and that is the single most common way homeowners kill an otherwise healthy machine. Disconnect the hoses, run the unit briefly to clear it, inject $8–15 of pump antifreeze, and store it above freezing when you can. Add fuel stabilizer to a gas unit at the same time. The maintenance interval guide walks the seasonal routine.
How long should a homeowner pressure washer last?
Longer than most of them do, because they usually die from storage rather than from work. Electric units are built for light seasonal duty and average 3–5 years, while a gas machine with changed oil and a drained pump reaches 5–10. Hours barely matter: a washer used twice a year for the driveway ages by neglect. Our lifespan guide and the maintenance checklist show which habits actually buy years.