A hard freeze does not send a calendar invitation. It shows up on a work night, finds the one hose still connected or the one bare pipe over the garage, and turns a small miss into wet drywall and a call you cannot afford to make in January.
The Insurance Information Institute reports average claim severity of $15,400 for water damage and freezing claims from 2019 through 2023. Your house may never produce a claim that large, but the math behind this list is simple. A few basic supplies and two short work blocks cost far less than emergency plumbing, cleanup, and repairs.
Work it in this order. The first block covers water and drainage. The second covers heat, drafts, and safety. If your house does not have a basement, sump pump, fireplace, or frost proof faucet, adjust the list to the house you have. The goal is not a perfect house by Sunday night. The goal is to close the easy failure points before the first hard freeze.
If You Only Have One Hour
Do these three jobs first.
- Disconnect hoses and drain the outside faucets. A connected hose can hold water where it can freeze and split the faucet or the pipe inside the wall.
- Insulate the most exposed pipes. Start with pipes in the garage, crawl space, basement rim area, and any unheated space near an outside wall.
- Find the main water shutoff and make sure it turns. If a pipe does fail, every minute spent hunting for the valve adds more water to the floor.
Those three steps give you the best one hour return because they reduce the freeze risk and shorten the damage if something still goes wrong.
Job 1: Disconnect Hoses and Drain Every Outside Faucet
Time: About 15 to 30 minutes
Cost: About $0 if you already have faucet covers, or under $15 for basic insulated covers
Failure it prevents: A split hose bib, cracked faucet body, or burst pipe inside an exterior wall
Do it
Walk the outside of the house and find every hose bib, including the one hidden behind shrubs and the one in the garage. Disconnect every hose, drain it, coil it, and store it where it will not hold water in a low loop.
If the faucet has an indoor shutoff valve, close that valve. Then open the outside faucet so trapped water can drain. Some indoor valves have a small bleeder cap on the side. Hold a cup under it, open the cap slowly, let the last water out, and close the cap.
Leave the outside faucet open for winter if your setup uses a separate indoor shutoff. If there is no indoor shutoff, close the faucet after draining it and fit an insulated cover over it. A cover helps, but it does not fix a hose left connected or a faucet that is already damaged.
Even a frost free faucet needs the hose removed. The long stem inside the wall cannot drain correctly when a hose, splitter, or nozzle traps water in the line.
Job 2: Insulate Pipes in Unheated Spaces
Time: About 30 to 60 minutes for the most exposed runs
Cost: About $15 to $60 in foam sleeves and tape for a typical starting pass
Failure it prevents: Frozen and burst pipes in garages, crawl spaces, basements, and exterior walls
Do it
Start where cold air reaches the plumbing. Check the garage, crawl space, unheated basement corners, cabinets on outside walls, and the area near the rim joist. Look for bare copper or plastic pipe, especially where the pipe runs close to concrete, a vent, or an outside door.
Measure the pipe diameter before you buy insulation. Foam sleeves only work well when the size matches. Slip the sleeve over the pipe with the split facing the wall where practical. Close the seam, then tape the joints and corners. Cut smaller pieces for elbows and tees so there are no bare gaps at the fittings.
Insulate both hot and cold lines in a cold space. Hot water pipe can freeze too, and insulating it also reduces heat loss while the water travels to the faucet.
Close obvious cold air leaks around the pipe where you can do so without sealing plumbing vents or trapping a pipe against an unheated surface. If a section has frozen before, mark it with tape and pay extra attention to air leaks around it. Pipe insulation slows heat loss. It cannot protect a pipe forever if the space stays below freezing, so keep the area as warm and closed off as your house design allows.
Use heating cable only if the product is made for the pipe material and the job, and follow the manufacturer instructions exactly. Never improvise with a space heater or open flame.
Job 3: Change the Furnace Filter and Run a Full Heat Test
Time: About 20 to 30 minutes
Cost: About $5 to $30 for a common replacement filter
Failure it prevents: Weak airflow, avoidable furnace shutdowns, uneven heat, and a no heat surprise during the coldest week of the year
Do it
Turn the system off at the thermostat or switch before you open the filter slot. Slide the old filter out and note its size and the arrow that shows the direction of airflow. If the surface is gray, matted, or clogged, replace it. Install the new filter with the arrow pointing toward the furnace or air handler.
Put the size in your phone so you are not guessing at the store next time. Then turn the heat up a few degrees and let the system run through a full cycle. Walk the house while it runs. Check that supply vents are open and not blocked by furniture, listen for new grinding or repeated short starts, and confirm that warm air reaches the rooms farthest from the furnace.
Look at the thermostat batteries if it uses them. Replace weak batteries now instead of during a cold snap.
Call a heating pro before winter if the furnace will not start, shuts off quickly, produces a strong gas smell, or shows a yellow and lazy burner flame on a gas unit where you can safely view it. If you smell gas, leave and call the gas company or emergency services from outside. Do not troubleshoot that one from the basement.
Job 4: Clear Gutters and Downspouts
Time: About 45 to 90 minutes, depending on the house and roof line
Cost: About $0 with a ladder and bucket, or $10 to $40 for a scoop and downspout extensions
Failure it prevents: Ice backup, overflowing gutters, fascia rot, foundation seepage, and water pooling beside the house
Do it
Set the ladder on firm, level ground and have another adult nearby. Wear gloves, scoop leaves and grit into a bucket, and work in short sections instead of reaching too far. Move the ladder often. Stay off a wet or icy roof, and hire the job out if the roof line is high, steep, or awkward.
Once the gutter is clear, run a hose into it and watch the downspouts. Water should move freely and discharge away from the foundation. Clear a clog at the elbow first, since that is where leaves often pack in. Reconnect loose sections and replace missing splash blocks or extensions.
Check that each downspout sends water several feet from the house where the yard allows it. Look for soil that slopes toward the foundation and note it for a spring grading fix. Fall is not the time to start a major dirt project, but a simple extension now can keep meltwater from collecting against the basement wall.
Clear gutters do not guarantee that ice dams will never form. They do remove one common cause of overflow and give melting snow a clear path off the roof.
Job 5: Seal the Worst Drafts and Gaps
Time: About 1 to 2 hours for the worst spots
Cost: About $15 to $75 for weatherstripping, caulk, and backer rod
Failure it prevents: Cold rooms, higher heating waste, frozen pipes near drafty walls, and moisture getting into joints and framing
Do it
Do not try to seal the whole house in one pass. Find the worst offenders. On a windy day, run a hand slowly around exterior doors, old windows, the attic hatch, and plumbing or wiring penetrations. Daylight under a door or a strong stream of cold air tells you where to start.
For doors, replace crushed or torn weatherstripping and adjust or add a door sweep where the bottom gap is uneven. For an attic hatch, add foam weatherstripping around the frame so it closes snugly. For windows that will stay shut all winter, repair failed latches first. A locked window pulls the sash tighter and may stop more air than another layer of caulk.
Use exterior grade, paintable caulk for narrow outdoor gaps around trim and penetrations. Push backer rod into wide gaps before caulk so the bead has support. Indoors, seal accessible gaps where pipes pass through a drafty exterior wall area, but do not block furnace vents, dryer vents, weep holes, or required combustion air openings.
Check the product label for the lowest application temperature. Caulk applied to a wet or frozen surface may fail before spring. Pick the driest and mildest part of the weekend for this job.
Job 6: Test the Sump Pump
Time: About 10 to 15 minutes
Cost: About $0 to test, or $10 to $30 for a cover, screen, or water alarm
Failure it prevents: A silent pump failure, a flooded basement, and damaged flooring, drywall, and stored belongings
Do it
Remove the pit cover if there is one and clear out loose grit or debris without reaching into moving parts. Check that the pump sits upright and the float can rise and fall without hitting the side of the pit or a pipe.
Pour water slowly into the pit until the float lifts and the pump starts. Watch the discharge. The pump should move water out and shut off when the level drops. If it runs but little water leaves, if it makes a harsh grinding sound, or if the float sticks, unplug it if you can do so safely and call a plumber before the ground gets saturated.
Check the discharge line outside and make sure the outlet is not buried, crushed, or blocked. If you have a battery backup, test it by following its instructions and check the battery date and water level if the battery design allows service. If there is no backup, consider a simple water alarm near the pit so a failure gets noticed sooner.
Put a flashlight where you can find it. A pump problem usually announces itself at night, during rain, or while nobody wants to go into the basement.
Job 7: Find the Main Water Shutoff and Run the Household Drill
Time: About 15 to 20 minutes
Cost: About $0, or under $15 for a tag, flashlight, and any simple valve key your setup requires
Failure it prevents: Minutes of uncontrolled water flow while everyone searches for a valve during a burst pipe emergency
Do it
Find the main shutoff before you need it. In many houses it is in the basement on the street facing wall, in a utility room, near the water heater, or by the meter. Yours may be different. Follow the main line from the meter or from the water heater area until you find the valve that controls the whole house.
Clear a path to it and hang a bright tag on it. Take a photo and share it with the adults in the house. Show everyone how the valve turns and explain that a round gate valve may need several turns, while a lever ball valve usually turns a quarter turn until the handle sits across the pipe.
Pick a calm time and test it gently. Tell the house first, turn the water off, open a faucet to confirm the flow stops, then reopen the valve slowly and check for drips around the stem. Never force a stuck valve. An old valve that will not move is useful information, and it belongs on a plumber list before an emergency.
Finish with a simple drill. One person calls out, “Pipe burst in the basement.” The next person goes to the valve. Someone else grabs towels and a bucket. That small rehearsal sounds silly on a Saturday afternoon. It saves real time when the floor is wet.
Job 8: Test Smoke and Carbon Monoxide Alarms and Check the Chimney
Time: About 20 to 40 minutes for alarms and a ground level chimney check
Cost: About $0 to test, about $20 to $60 for a replacement alarm, and professional chimney service varies by area
Failure it prevents: An undetected carbon monoxide leak, a slow warning during a fire, and a chimney problem that goes unnoticed until the first heavy fire
Do it
Press the test button on every smoke alarm and carbon monoxide alarm. Replace batteries in units that use replaceable batteries if the age is unknown. Check the manufacture or replacement date on the back. An alarm that is past its replacement date does not earn another season just because it still beeps.
Make sure alarms are installed on every level and outside sleeping areas. Keep one near the bedrooms where it can wake people with doors closed. Vacuum dust from the covers with a soft brush, and write the test date on your phone or a note inside a kitchen cabinet.
If anyone in the house has headache, dizziness, nausea, or confusion and an alarm sounds, get outside and call emergency services. Do not open windows, search for the source, or go back in for belongings.
For the chimney, stay on the ground. Look for a missing cap, cracked crown, loose flashing, heavy staining, or pieces of flue tile in the yard. If the fireplace or wood stove gets regular use, or you do not know when it was last inspected, schedule a qualified chimney sweep before the heavy burning season. A visual check from the yard is not a substitute for an internal inspection.
Before You Call It Done
Take five minutes for the final lap. Put the filter size, shutoff photo, sump pump test date, and alarm dates in one note on your phone. Put faucet covers, spare batteries, and the flashlight where they belong. Tell the house where the water valve is one more time.
Your weekend list does not need to be perfect. It needs to be done before the weather turns. If you need pipe insulation, a filter, an alarm, weatherstripping, or a gutter tool before you start, check the current prices in our deals roundup first.