Frozen pipes, failed furnaces, and ice dams are all preventable. Here is exactly what to do and when.
Winterizing is not a vague seasonal ritual. It is a specific set of tasks that prevent specific expensive problems. Frozen pipes that burst cost $500 to $1,500 to repair, plus whatever water damage happened while you were not watching. A furnace that fails on the coldest night of the year is a $500 to $2,000 emergency repair. Ice dams that form because gutters were not cleaned can lift shingles and let water into your walls.
None of this is inevitable. Work through the tasks below before the first hard freeze and you will spend the winter ahead of the problems instead of paying for them.
A garden hose left connected to an outdoor spigot traps water against the faucet body. When that water freezes, it can crack the pipe inside your wall — even if you have shut off the interior valve. Disconnect all garden hoses, drain them, and store them before temperatures drop below freezing. This takes five minutes and prevents the most common type of winter pipe damage.
Find the shut-off valve for each outdoor faucet inside your home — usually in the basement or crawl space near where the pipe exits through the wall. Turn it off. Then open the outdoor faucet to drain any water remaining in the line between the valve and the spigot. Leave the outdoor faucet slightly open until it stops dripping. If your faucets are frost-free models (the handle extends further from the wall than a standard faucet), this step may not be necessary — but draining the hose still is.
Pipes in unheated spaces — garages, crawl spaces, and along exterior walls — are the most vulnerable to freezing. Foam pipe insulation sleeves cost about $1 per linear foot at any hardware store. They slide on easily and can be cut with scissors. Installing them on your most exposed pipes takes an afternoon and costs less than $30 for most homes.
If you have an in-ground irrigation system, it needs to be professionally blown out with compressed air before the first freeze. Water left in the lines will expand when it freezes and crack the PVC pipes underground. A professional winterization service costs $75 to $150 and takes about an hour. If you skip it and lines crack, spring repairs run $200 to $500 per zone plus excavation costs if the damage is underground.
HVAC companies are busy in October and November when the first cold snaps hit and everyone starts calling. If you wait until then, you are looking at a 2 to 3 week wait for a non-emergency appointment. Book in September. A furnace tune-up includes a safety inspection, cleaning of the heat exchanger, and an efficiency check. It costs $80 to $150 and catches problems before they become failures.
If you heat with oil, propane, or wood, early fall is the time to fill your tank or stack your wood. Fuel prices spike in winter and delivery wait times get longer. Ordering in September or October gets you better pricing and certainty that you will have fuel when you need it.
Know where your main gas shut-off is and how to use it. Know where your main water shut-off is. If a pipe bursts at 2am, you do not want to be learning this for the first time. Walk through your utility areas once a year and confirm you know where the shut-offs are and that they actually turn.
Leaves fall throughout October and November. Clean gutters after most of the leaves have fallen but before the first hard freeze. Debris-filled gutters hold water, which freezes and can pull gutters away from the fascia. They also contribute to ice dam formation — when water backs up behind a dam of ice at the gutter line and starts working its way under your shingles.
Look for missing or curled shingles, lifted flashing, and any dark patches that suggest moisture damage. Whatever state your roof is in going into winter is the state it will emerge from in spring, plus whatever additional damage snow and ice cause. A small repair in October is a fraction of the cost of a spring emergency.
Mice and other rodents start looking for warm places to live in fall. Walk around your foundation and look for gaps where pipes or wires enter the house. Stuff steel wool into any gap larger than a quarter inch, then seal over it with expanding foam or exterior caulk. Mice can compress themselves through gaps that seem impossibly small.
Carbon monoxide risk increases significantly in winter when heating systems are running and homes are sealed up. Press the test button on every detector in your home. Replace batteries in anything that sounds weak. Replace any detector that is more than 10 years old. Carbon monoxide is odorless and colorless — a functioning detector is your only warning system.
Run your hand along the bottom and sides of each exterior door while someone holds a flashlight on the other side. If you see light, you have a gap. Weatherstripping kits cost $10 to $20 per door and take 30 minutes to install. The energy savings in the first winter pay back the cost.
Warm air rises and collects at the ceiling. Running ceiling fans clockwise on low speed pushes that warm air back down along the walls and reduces how hard your furnace works. There is a small switch on the fan motor housing that reverses the direction. Flip all of them before you turn the heat on for the season.
Every Celene and Co member receives fall winterization reminders timed to arrive before the first hard freeze in their region. Outdoor hose disconnection in mid-October. Furnace tune-up booking in September. Gutter cleaning in late October. Pipe insulation check before November. You work through each task as the reminder arrives instead of trying to hold the whole list in your head.