can a well pump freeze

Can a Well Pump Freeze? All the Facts You Need To Know

Key Takeaways:

  • Yes, Well Pumps Can Freeze: If temperatures drop below 32°F (0°C), your well pump can freeze, especially if it’s above ground or not well-insulated.
  • Types of Well Pumps: There are two main types—submersible pumps, which are great for deep wells, and jet pumps, which work better for shallow wells but are more likely to freeze.
  • Signs Your Well Pump Might Be Frozen: Watch out for a sudden stop in water flow, fluctuating water pressure, weird noises, and frost on the pipes.
  • Preventive Measures: To prevent freezing, insulate your pump and pipes, use heat sources like heat lamps, seal any openings around your well, and keep water flowing during cold spells.
  • Steps to Thaw a Frozen Well Pump: First, turn off the power. Then, check for damage, use a space heater to thaw pipes, make sure the pressure switch isn’t frozen, and watch for leaks once everything is thawed.
  • When to Call a Pro: If you can’t get your pump thawed or see any damage, it’s time to call a licensed water well contractor for help.

Understanding How Well Pumps Work

Understanding how well pumps work involves looking at the intricacies of their design and operation. Typically, well pumps are installed to retrieve water from underground sources. These pumps are usually located at the bottom of the well, submerged in water, which helps to cool and lubricate them during operation. The two primary types of well pumps are submersible pumps and jet pumps. 

Submersible pumps operate by pushing water to the surface. They are housed entirely underwater and are highly efficient, leveraging water pressure to move large volumes of water quickly. This makes them ideal for deep wells, where significant water depth can impact the efficiency of other pump types. 

Approximately 60% of US households rely on well water

On the other hand, jet pumps function using a combination of suction and pressure. These pumps are typically placed above ground and work well for shallow wells. They are generally easier to access for maintenance but can be less effective in deeper wells where the distance between the pump and the water source is too great. 

The pressure switch and pressure tank are crucial components in the well pump system. The pressure switch monitors the water pressure in the tank and activates the pump when it dips below a certain threshold, ensuring a steady supply of water. The pressure tank acts as a reservoir, maintaining water pressure within the home’s plumbing system and reducing the frequency of pump cycles, which prolongs the pump’s lifespan. 

Can a Well Pump Freeze? Key Factors Explained

Yes, a well pump can freeze, particularly in regions where temperatures drop significantly during the winter months. To understand why and how this happens, it is important to consider several key factors: 

Freezing typically occurs when temperatures drop below 32°F (0°C)

1. Exposure to Extreme Cold: Well pumps and their connecting pipes, especially those located above ground or in uninsulated areas, are highly susceptible to freezing when exposed to prolonged cold weather. In Southern states, where extreme cold spells are less common, sudden drops in temperature can catch homeowners unprepared, leading to frozen pumps and burst pipes. 

2. Inadequate Insulation: One of the primary reasons well pumps freeze is due to insufficient insulation. Smaller diameter pipes, exposed PVC plumbing, and external components need proper insulation to prevent freezing. Products like the Well Hot-Cap can provide effective insulation and protect these vulnerable parts from cold temperatures. 

3. Moisture and Water Flow: Pumps that retain water in the discharge line are at a higher risk of freezing. It’s crucial to ensure there’s constant water flow or to drain the system if it’s not in use. Submersible pumps, in particular, should not be shut off completely as the standing water in the discharge line can freeze and cause damage. 

4. Power Loss: During winter storms, power outages can disrupt the function of well pumps, leaving water to stagnate and freeze in the pipes. Having a backup power source can help maintain the operation of the pump and prevent freezing. 

Signs Your Well Pump Might Be Frozen 

One of the most telling signs that your well pump might be frozen is a sudden stop in water flow. If you turn on a faucet and nothing comes out, or if the water pressure is significantly reduced, it could indicate that the water in the pipes has frozen and is blocking the passage. Additionally, you may notice these specific symptoms: 

  • No Water at All: If you experience a complete lack of water, this is a major red flag that your well pump or the pipes connected to it might be frozen.
  • Fluctuating Water Pressure: Inconsistent water pressure can signal that ice is forming inside the pipes, partially restricting the flow before completely freezing.
  • Unusual Noises: Hearing strange sounds like gurgling, clicking, or whirring when you try to use the well pump can also indicate internal ice blockages or issues caused by freezing temperatures.
  • Frost on the Pipes: Visible frost or ice on exposed sections of pipes near the well pump is a clear indicator that freezing conditions are affecting your system.
  • Cold Temperatures: If there’s been a recent drop in temperature, especially below freezing, and your well pump suddenly stops working, it is highly likely that freezing is the culprit.

Steps to Take If Your Well Pump Freezes

If you suspect your well pump has frozen, it’s crucial to act quickly to prevent further damage and restore water flow. Here’s a step-by-step guide on what to do: 

  1. Turn Off the Power: The first and most important step is to turn off the power to the pump. Locate the breaker that controls the well pump and switch it off. This will prevent any electrical hazards while you work on thawing the system.
  2. Inspect for Obvious Damage: Check the well pump and any exposed pipes for visible signs of damage such as cracks or leaks. If you notice any broken parts, it’s advisable to call a professional plumber immediately.
  3. Thaw the Pipes: Carefully use a space heater or heat lamp to thaw frozen pipes. Do not use an open flame or torch as this can be extremely dangerous and may cause pipe damage. Focus on areas where the pipes are most susceptible to freezing, such as where they enter the house.
  4. Check the Pressure Switch: Sometimes ice can affect the pressure switch, causing the pump to malfunction. Ensure the pressure switch is operational by inspecting it for any ice buildup. If needed, gently thaw the switch using safe heating methods.
  5. Evaluate the Pump Head: Listen for any pump activity. If the pump is silent, it might be frozen. Use a thermometer to ensure the temperature around the pump head is above freezing; you may need to apply gentle heat to the area.
  6. Monitor for Leaks: Once you have thawed the pipes and the pump, turn the power back on and check for leaks. Monitor the system closely for the first few hours to ensure there are no issues.
  7. Seek Professional Help: If you are unable to thaw the well pump or if it does not resume functioning correctly, it’s best to contact a licensed water well contractor. They can diagnose and fix the problem without causing further damage.

Preventative Measures to Keep Your Well Pump Ice-Free

Here are several key preventative measures to ensure your well pump remains ice-free:

  • Insulate Above-Ground Components: Use insulating materials such as foam pipe covers or thermal blankets to shield the pump and its exposed pipes. In particular, smaller diameter pipes and above-ground piping are highly susceptible to freezing, so ensure these are well protected.
  • Install a Well Hot-Cap: A Well Hot-Cap is a specialized insulating cover designed to maintain warmth around your well pump system. It acts as a barrier against cold air, keeping the pump and surrounding pipes at a stable temperature.
  • Utilize Electrical Heat Strips: Wrap electrical heat-generating strips around vulnerable plumbing. These strips are designed to maintain a consistent temperature, preventing the pipes from dropping to freezing levels.
  • Seal Openings and Cracks: Inspect the area around your well casing and seal any gaps or openings where cold air might penetrate. A simple caulk or expanding foam sealant can be used to create an airtight barrier.
  • Maintain a Steady Water Flow: During extremely cold spells, allow a small trickle of water to run through the system. Moving water is less likely to freeze compared to stagnant water.

Furthermore, regular maintenance and inspections are essential. Periodically check the insulation and make any necessary repairs or adjustments. By staying proactive, you can significantly reduce the risk of your well pump freezing, ensuring a consistent water supply throughout the winter.


In conclusion, understanding the risks and preventative measures for well pump freezing is essential for maintaining a reliable water supply during cold weather. By being aware of the signs of a frozen pump and taking steps to insulate and protect your system, you can avoid the hassle and expense of dealing with frozen pipes. 

Regular maintenance and proactive measures, like installing heat sources and sealing openings, will help keep your well pump functioning smoothly all winter long. And remember, if you ever find yourself facing a frozen well pump that you can’t fix, don’t hesitate to call a professional for assistance. 

Staying informed and prepared ensures that your well pump remains ice-free and your home stays comfortably supplied with water, no matter how low the temperature drops.

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