Sump pumps are a household necessity that most homeowners forget about until they stop working. Most sump pumps have a usable life of about 7 to 10 years. As they age, they begin to show signs that they may not work properly. Look for these signs and call for an inspection before your sump pump fails and water floods your home.
1. Odd or Excessive Noises During Operation
You shouldn’t expect your sump pump to operate silently. After all, it’s a mechanical device that should produce a low, predictable hum when running. However, if you hear strange noises, take notice. If your sump pump rattles or makes a grinding sound, it may have a damaged or bent impeller blade, the spinning device that forces water out. The impeller can bend if it sucks in a small pebble or other debris, throwing the motor off balance. A loud thump when the pump shuts off indicates that your check valve is failing. This component prevents pumped water from re-entering the pit. When worn, gravity easily slams the water back into your home.
2. Turning On and Off Too Quickly
Short-cycling occurs when your pump kicks on for several seconds, shuts off, and turns on again after several more seconds. This cycle can burn out your motor. A faulty float switch is almost always the cause. If the float in the pit gets pinned against the side of the basin or is poorly adjusted, it won’t accurately read the water level, leading to short-cycling.
3. The Pump Runs Constantly
A pump that runs constantly, even when the pit is empty, will quickly burn out the motor. The float switch is the most common cause. The switch can easily get stuck in the up position due to shifting mechanical parts or debris. If your pump doesn’t have sufficient horsepower to overcome gravity and push water through the discharge pipe, it may run continuously without making any progress.
4. Visible Rust, Corrosion or Crusting
If you don’t see any of the previously mentioned signs, take the pit lid off and look inside. A white crust indicates mineral buildup from hard water, which can affect moving parts over time. Dark brown rust indicates protective coatings have failed, compromising structural integrity and internal seals.
5. The Pit Empties Too Slowly
If the water level in the basin remains stubbornly high, especially during heavy rain, it indicates your pump has begun to lose efficiency. While it may work temporarily, it will eventually fail. Worn internal components or an intake screen clogged with dirt, leaves, or gravel can cause this problem.
A thorough inspection by a plumbing professional can determine the cause of these problems. Depending on the sump pump’s age, replacement may be more appropriate than repair. If you live in Tennessee and need sump pump services, make your first call to Pioneer Heating, Cooling, Plumbing, & Electrical.