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How To Protect Your Jet Pump From Freezing Temperatures?

April 5, 2026

Quick Answer

Insulate the jet pump, use a frost-proof discharge kit, and install a freeze-resistant jet pump to protect it from freezing temperatures.

Insulation and Freeze Protection

Insulate your jet pump with a minimum of 3-4 inches of foam board insulation around the pump and pipes. This will help maintain the pump’s operating temperature and prevent water inside the pump from freezing. You can also use heat tape or thermostatically controlled heat cables wrapped around the pipes to maintain a temperature above freezing.

Frost-Proof Discharge Kit

A frost-proof discharge kit can be installed to prevent water from freezing in the discharge pipe. This kit typically includes a check valve and a freeze-resistant discharge tube that allows water to drain into a frost-proof area, such as a frost-proof well cap or a buried drain pipe.

Choosing a Freeze-Resistant Pump

When selecting a jet pump for use in freezing temperatures, look for a pump specifically designed for freeze protection. These pumps typically have a built-in freeze-resistant design, such as a high-temperature-resistant motor or a specialized impeller that prevents ice from forming inside the pump. Some popular freeze-resistant jet pump models include the Goulds J5S and the Wayne SPSU250. Always check the manufacturer’s specifications and recommendations for freeze protection in your area.

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