4 Types Of Float Switches For Sump Pumps

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4 Types Of Float Switches For Sump Pumps

3 March 2016
 Categories: , Blog

The process of changing a float switch in a sump pump may become necessary if the unit doesn't switch off and on correctly. Improper care and debris may cause the switch to need replacement. Several options are available, including adding a different type of switch or simply replacing the switch with the same type. If you are confused, it might be easier to hire a professional.


A diaphragm switch is the choice of many professionals, but it is also the most expensive type. However, it doesn't get stuck as many of the other styles. It is immersed beneath and is dependent on the water pressure. The pressure turns the switch to the on position and when the pressure is lowered the switch returns to the off cycle.

Vertical Action

A vertical action float switch is a good quality, inexpensive choice and will remain afloat above the water. For example, when the ball rises, the water is also rising, triggering the switch. The ball can only move up and down, and doesn't get jammed as frequently as other types. This switch is a minimum of 10" in diameter. However, it does have less 'rest' time between the cool-off cycles.


An electronic switch takes up very little space and doesn't have any moving parts. If the pump receives water from laundry sinks or washers, this switch wouldn't be efficient. The soap can damage and corrode the electrodes that and make the unit malfunction. It is more useful with a small sump pump unit such as one with a built-in water depth alarm. This switch maintains a minimum of 10" in diameter.


A tethered float switch is a good choice for deeper/larger sump pits, and it doesn't get stuck on the pit's walls. The pump's motor has longer to cool off between the cycles of the unit. A large degree of heat begins as the pump starts, but this type will allow the pump to last longer and save on costs and power usage. This is favored by the do-it-yourself individual and is used for pedestal sump pumps. The height is the factor involved that creates the floatation factor. It remains above the waterline and doesn't need to be observed in case electrical problems are evident. The float has a minimum 14" in diameter.

Each unit has specific advantages and disadvantages. It may also depend on your budget and the location of the pump. Research is the best determining factor before you decide which unit will best suit your needs. To learn more, speak with a business like B & B Drain Tech Inc.

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Enjoying Your Plumbing

When you think about the fixtures in your home that keep you happy, you probably take that bathtub, sink, and toilet for granted. However, if you have ever been asked to live without one of these crucial fixtures, you probably quickly discovered how important they really were. That bathtub can give you relief after a long day at the gym, and that toilet can become the most important plumbing device in your home if you come down with the stomach flu. My blog focuses on teaching homeowners more about their plumbing, so that you can enjoy what you have and troubleshoot new problems.