If your house runs on a well, your well pump and pressure tank are doing more work than any other piece of equipment in your home. Here’s what we tell our customers about keeping that system running, drawn from 70-plus years of well work across Frederick County.
The two most common failures
In our service area, we replace pressure tanks more often than pumps. Here’s why:
Pressure tank bladder failure. A waterlogged pressure tank causes the pump to short-cycle — kicking on and off every time you flush a toilet or run the kitchen tap. Short-cycling kills pumps. The tank itself is usually a $400–$700 part; the pump it protects is several thousand. Replacing a tired pressure tank is one of the highest-leverage maintenance moves you can make.
Pressure switch failure. The little gray box bolted to your tank tells the pump when to start and stop. The contacts pit and burn over time, and the switch eventually fails — usually in the “stuck on” or “stuck off” position. Inexpensive part. Quick replacement. Often misdiagnosed as a pump problem.
How to tell if your pressure tank is bad
The classic test:
- Turn off power to the well pump at the breaker.
- Open a faucet and drain the tank until water stops flowing.
- Find the air valve at the top of the tank (looks like a tire valve) and check the pressure with a tire gauge.
A healthy tank should read 2 PSI below the cut-in pressure of your pressure switch (usually 28 PSI for a 30/50 switch, or 38 PSI for a 40/60 switch). If you get zero — or water out of the air valve — the bladder is shot.
When to suspect the pump itself
- No pressure at all, breaker stays on. Pump may have lost prime or the motor may be done. If the pump is more than 10 years old in Frederick County water, plan for replacement.
- Pressure cuts in but won’t reach upper limit. Could be a worn pump, a broken pipe between pump and house, or a bad check valve. Diagnosis matters here — don’t just throw a new pump at it.
- Sand or grit in the water. A submersible pump pulling sediment is wearing itself out. Time for a service call.
What we stock
Submersible pumps from 1/2 hp through 2 hp, jet pumps for shallow wells, pressure tanks from 20 to 86 gallons, pressure switches at 30/50 and 40/60 ranges, and the storage / cistern tanks we use for low-yield wells. Most jobs we walk in carrying the part.
Real-estate inspections
If you’re buying a home in Frederick County with a well, a pre-purchase well inspection is worth every dollar. We test pump output, tank function, and water quality — and we’ll write up what we find without trying to sell you a system. Request a well inspection.
Local context
We service well pumps across Walkersville, Middletown, Mount Airy, the rural edges of Urbana, and Frederick wells outside the city water lines. Call 301-662-1759 if your pressure has dropped.