Submersible Pumps: They are sealed and can be totally submerged.
Pedestal Pumps: Have their pumps at the bottom of a stand and their motors elevated.
Tip: When replacing a sump pump, it is generally advisable to use a pump of the same type, pumping capacity, and configuration to make the replacement simple
Note: Always contact your local building authorities or health department before beginning work on sewage or septic systems.
Shallow Well Pumps: Found in applications of 25 inches or less. These well pumps are not submersible and are placed outside the well in a well housing.
Tip: Look for overload protection, which prevents motor burnout. The best shallow well pumps are accompanied by a tank or a booster to increase PSI, which provides constant water pressure to your home. If size is a restriction due to your well housing, choose a pump with a booster as this will take up less space.
Submersible Well Pumps: With the entire unit submerged, it has a series of impellers that draw water from the well and push it up through the pipe leading to the home. Submersible pumps can obtain upwards of 500 feet of lift for really deep wells.
Jet Pumps: Shallow jet pumps create a vacuum that draws water up from the well and pushes it through to the home's holding or pressure tank. Submersible jet pumps also pushes water back down through a return line that's connected to the suction line. The added pressure from the pump pushing water through the return line enables the pump to draw water from greater depths at higher flow rates.
Tip: Don't make the mistake of purchasing a pump that's too powerful. An over sized pump will cycle on and off too often, stressing the pump motor and leading to early failure.
Note: Keep in mind that sprinkler pumps are restricted to a 25 ft. lift.
Water pumps come in two power sources: gas and electric. Gas water pumps are quite powerful and are usually found on job sites or other industrial sites. Electric water pumps are great for indoor use, and most are capable of being plugged into a standard household outlet.
Pressure tanks are typically used in conjunction with private wells. The tanks provide consistent pressure to the home's water system within a range of approximately 20 pounds per square inch (psi) and also act as reservoirs, holding extra water in the system. Most home water systems are set up so the pump turns on at 20, 30, or 40 psi and turns off at 40, 50, or 60 psi, respectively.
The tank allows water to be drawn from the system without the need for the pump to cycle on and off each time the water is turned on. Reducing on and off cycles cuts down on wear and tear and prolongs the pump's life.