How to Winterize a Well Pump for Beginners
Table of Contents
How to Winterize a Well Pump for Beginners: Step-by-Step
What You'll Need Before You Start
Step 1: Shut Off Power and Release System Pressure
Step 2: Drain Water from the Pump, Tank, and Plumbing
How to Winterize a Shallow Well Pump
How to Winterize a Submersible Well Pump
Well Pump Freeze Protection for Year-Round Use
How to De-Winterize a Well System in Spring
When to Call a Professional for Well Pump Winterization
Frequently Asked Questions
Last Updated: October 13, 2026
How to Winterize a Well Pump for Beginners: Step-by-Step
Learning how to winterize a well pump for beginners comes down to one goal: get every drop of water out before the first hard freeze. Water expands as it freezes, cracking pipes, splitting pump housings, and ruining pressure tanks.
This guide walks through the exact steps for rural well systems: shutting off power safely, draining the system, protecting what stays outside, and restarting when the ground thaws.
Watch Out The biggest mistake beginners make is draining the tank but forgetting the line between the wellhead and the house. That buried or exposed section holds water too. If it freezes, you'll be digging up a broken water line in January.
What You'll Need Before You Start
Work gloves and eye protection
Adjustable wrench and screwdrivers
A bucket or two for catching water
Total time: about 60 to 90 minutes for most homes.
Before you touch anything, find your pump type. A shallow well pump sits above ground and pulls water from less than 25 feet. A submersible pump hangs inside the well casing itself. The steps overlap, but the details differ.
Step 1: Shut Off Power and Release System Pressure
Cut the power at the breaker first, then drain the pressure. This order matters. The Occupational Safety and Health Administration guidance on lockout procedures treats de-energizing equipment before service as a basic safety rule, and the same logic applies at home.
Here's the sequence:
Turn off the breaker that feeds the pump. Label it so nobody flips it back on.
Open a faucet in the house to release water pressure.
Watch the pressure gauge on your tank drop to zero.
Leave the faucet open for now.
Do not skip the pressure release. A pressurized tank can spray water hard enough to hurt you or soak your electrical panel.
Step 2: Drain Water from the Pump, Tank, and Plumbing
Draining is the heart of winterizing. Open every low point and let gravity work, starting with the pressure tank and working outward.
Connect a hose to the tank's drain valve and run it to a floor drain or outside.
Open the drain valve and let the tank empty completely.
Open every faucet in the house, both hot and cold, to break the vacuum.
For an above-ground pump, remove the drain plug on the pump housing and let it drain. Tilt it slightly to get the last of the water out.
Pro Tip Open the lowest faucet in the house first, then work your way up. Water traps in low spots if you drain top-down, and that trapped water is exactly what cracks pipes.
How to Winterize a Shallow Well Pump
Shallow well pumps are easier to winterize because everything sits above ground. The key is getting water out of the pump housing, suction line, and pressure tank.
Disconnect power and release pressure as in Step 1.
Remove the drain plug from the pump housing.
Disconnect the suction line at the pump and let it drain.
If the suction line runs to a shallow well, check the check valve and foot valve.
Blow air through the suction line to push out trapped water.
Drain the pressure tank and all connected plumbing.
If you can't remove a line, blow air through it. A small compressor works fine. You'll hear the water sputter out the other end.
How to Winterize a Submersible Well Pump
A submersible pump is the one part of the system you cannot drain.
Your job is to protect the above-ground half of the system and prove the buried line is empty:
Kill the power at the breaker and tag it. A submersible pump has no visible switch, so the breaker is your only lockout point. Tape a note over it.
Open a house faucet and let the pressure gauge fall to zero. This confirms the pressure switch has opened and the pump cannot cycle on while you work.
Drain the pressure tank through its drain valve, then open every fixture in the house, hot and cold, both floors, to break the vacuum and let the tank empty fully.
Find the pitless adapter. This brass or stainless fitting passes through the well casing below the frost line and connects the drop pipe to the line running to your house. On most modern wells it sits 3 to 6 feet down inside the casing, under a removable cap. Older wells may use a well seal instead, with the line exiting through the top of the casing.
Disconnect the line at the pitless adapter if it is accessible. Some adapters have a threaded union you can break loose with two wrenches; others require a pitless puller tool. If you cannot reach it safely, do not force it, see the professional section below.
Blow the house line clear with air. With the adapter open, feed a compressor hose into the line from the house side and push air toward the wellhead. Keep blowing until the air runs dry and no mist comes out.
Cap or plug the wellhead. A well cap that is cracked, loose, or missing lets cold air pour straight down the casing. Replace a damaged cap and seal the wire entry grommet.
Insulate the exposed run. Any pipe between the wellhead and where it enters the foundation gets foam pipe insulation plus heat tape if the run is longer than a few feet.
Watch Out Do not pull the drop pipe or the pump itself unless you have a pump hoist or a trained crew. A submersible pump and its drop pipe can weigh 100 pounds or more, and dropping one back down the casing can crack the pump, shear the torque arrestor, or leave the safety rope tangled. That is a five-figure repair for a job that winterization does not require.
How to verify the buried line is actually empty. This is the step most beginners skip and the reason lines crack in January. After blowing the line clear, do three checks:
Listen at the adapter. Hold a hand near the opening while the compressor runs. Any gurgle or spray means water is still trapped at a low point.
Check the pressure gauge after 10 minutes. With the tank drain open and the breaker off, the gauge should stay at zero. If it creeps up, water is draining back from somewhere you have not opened.
Feel the line at the lowest exposed point. If the pipe is cold and heavy when you lift it, it still holds water. A dry line feels light and hollow.
If any check fails, you have a low spot between the wellhead and the house, usually a dip where the line was trenched around a rock or foundation.
Submersible-specific parts to inspect while you are in there:
Check valve, usually built into the pump or the top of the drop pipe. If it fails, water drains back down the well every time the pump shuts off, and the line stays wet longer.
Torque arrestor, the rubber guide that keeps the pump centered in the casing. Cracked or missing, it lets the pump slap the casing and shortens its life.
Splice and heat-shrink, the waterproof connection between the pump cable and the drop cable. A failed splice is the most common reason a submersible pump stops working after a cold snap.
If your well uses a constant-pressure system with a variable-frequency drive instead of a standard pressure switch, the controller is a separate electrical box that also needs to stay above freezing.
Well Pump Freeze Protection for Year-Round Use
Freeze protection isn't only a fall job. If you use your well year-round, you need a plan that holds through the coldest weeks.
Wrap exposed pipes with heat tape and insulation.
Keep the pump house heated with a small space heater or heat lamp.
Seal gaps around the wellhead and any pipe entries.
The frost line in this part of the Midwest runs deep enough that buried lines usually stay safe. Exposed lines, pump houses, and above-ground equipment do not. That's where freeze damage happens.
Key Takeaway Water moving through a pipe resists freezing far better than water sitting still. A slow drip on the coldest nights is one of the cheapest freeze-protection tools you have.
How to De-Winterize a Well System in Spring
Spring restart is where most winterization mistakes show up. A line that cracked in January won't leak until you pressurize it, and a pump that lost its prime will run dry and burn out its motor in minutes. Do the restart in this order:
1. Walk the system before you touch a valve. Look for split pipe, pushed-apart fittings, cracked pump housings, and water stains. A freeze crack often looks like a hairline split along a fitting seam, not an obvious break.
**2.
**3.
**4.
5. Restore power at the breaker. Listen for the pump.
6. Open one faucet and let it run. Start with the lowest faucet.
**7.
**8.
9. Flush the water heater and any treatment equipment. Sediment settles over a winter shutdown.
10. Test the pressure switch manually. With the system pressurized, open a faucet and watch the gauge.
Key Takeaway A pump that hums but does not move water is the most common spring failure. Shut it off at the breaker immediately, running a pump dry for even a few minutes can burn out the motor and turn a $200 repair into a full pump replacement.
Troubleshooting the restart:
No water, pump runs. Airlock in the suction line, a failed check valve, or a water level that dropped below the intake over winter. Shut off, wait 15 minutes, try again. If it repeats, the check valve or water level is the problem.
Pump will not start. Breaker tripped, pressure switch stuck open, or a burned-out motor. Reset the breaker once. If it trips again, stop and call a professional.
Pressure climbs slowly. Clogged sediment filter, partially closed valve, or a failing pump. Check the filter first, it is the cheapest fix.
When to Call a Professional for Well Pump Winterization
Call a licensed plumber when you can't reach a valve, the pump won't hold pressure, or you're not sure the system is fully drained.
RooterMan of Indiana handles well system repair and winterization for rural homes across the region, including systems most city plumbers won't touch.
We also handle the related systems that fail in cold weather, from sump pump replacement to frozen pipe repair.
Frequently Asked Questions
How do you winterize a well pump?
Start by turning off power to the pump at the breaker. Open the nearest faucet to release pressure. Drain the pressure tank through its drain valve, then drain all water lines and the pump housing. For shallow well pumps, disconnect and drain the suction line. For submersible pumps, blow air through the lines or use a shop vac. Add freeze protection to above-ground components. If you're unsure, call a licensed plumber.
Do you need to winterize a submersible well pump?
Submersible pumps sit below the frost line, so the pump itself rarely freezes. However, the pipes from the wellhead to your home, the pressure tank, and above-ground plumbing can freeze and burst. Winterizing a submersible well pump means draining those exposed components and adding insulation or heat tape. If your pump feeds a vacation cabin, a full shutdown is safest.
How do you keep a well pump from freezing?
Insulate the pump house and any above-ground pipes. Use heat tape on vulnerable water lines, especially near the pressure tank and where pipes enter the ground. Keep a small space heater running in the pump house during cold snaps. Seal cracks and openings to block drafts. For year-round homes, maintaining heat and insulation is usually enough to prevent freeze damage.
Should you drain a well pump before winter?
Yes, if the pump or its plumbing is in an unheated space or you plan to leave the property vacant. Draining prevents water from freezing and cracking the pump housing, pressure tank, or pipes. For year-round homes with a heated pump house, you may only need insulation and heat tape. Always follow the manufacturer's instructions for your specific pump model.
A hard freeze can turn a working well system into a cracked, flooded mess overnight. Getting the water out early is the whole game. RooterMan of Indiana brings licensed plumbing expertise, transparent pricing, and photo-documented work to every well system job, so your system is drained right the first time. Schedule online and let our team handle the winterization before the first cold snap hits.
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