plumbers

Winterizing a Vermont Second Home: Shut It Down or Keep It Warm?

Winterizing a Vermont second home means choosing a full shutdown or a monitored warm house. Draining steps, boiler options, freeze alarms, ice dams, and insurance.

Winterizing a Vermont Second Home: Shut It Down or Keep It Warm?

Vermont second homes split into two groups every fall. The summer places on Lake Champlain, Lake Bomoseen, and the Connecticut River get drained and locked by Columbus Day. The ski houses in Stowe, Killington, Warren, Ludlow, and Jay stay live all winter because the owners want to use them in January, which means the job is keeping a house from freezing while nobody is in it for three weeks at a stretch.

Both groups face the same enemy. A Vermont cold snap can hold below zero for a week, and a house that loses heat during that week will have burst pipes, a cracked toilet, and ceiling damage before anyone notices.

The decision between a full shutdown and a monitored warm house depends on how the home is built, how often you will use it, and how far away you live. This guide covers both paths, the roof and driveway problems that come with either, and what your insurer expects.

Choosing Between a Full Shutdown and a Warm House

A full shutdown means draining every water line, putting antifreeze in the traps, turning off the heat, and leaving the house cold until spring. It costs almost nothing to maintain, and once done properly it cannot freeze. The downside is that the house is unusable until you reverse the process, which takes a plumber visit or a long afternoon.

A warm house means leaving the furnace or boiler at 50 to 55 degrees, keeping fuel delivered, installing a freeze alarm, and having someone nearby to respond. It keeps the house ready for a weekend visit with an hour's notice. It also means a fuel bill all winter and a real risk if the power fails or the boiler quits during a cold stretch.

Homes built as seasonal camps, with plumbing in uninsulated crawl spaces and no real insulation, should be shut down. There is no amount of thermostat setting that protects a pipe running through a 10-degree crawl space. Year-round construction with insulated walls, a full basement, and a modern heating system can go either way, and most ski-country owners choose warm.

The Full Shutdown

Draining a Vermont house starts with shutting off the water at the main or the well pump breaker, then opening every faucet, inside and out, hot and cold, to let the system depressurize. Open the low-point drains, which usually sit near the pressure tank or the water meter. Gravity empties most of the plumbing if the house was built to drain, and many Vermont camps were.

A small compressor at 40 to 50 psi, connected at a hose bib or a boiler drain, pushes out what gravity leaves. Work from the farthest fixture back toward the compressor until each faucet blows dry. Include the dishwasher, the washing machine hookups, the outdoor shower, the ice maker line, and any hose bib on the barn or garage.

Every P-trap gets a cup of RV antifreeze, the pink plumbing-safe kind. Toilets get sponged dry and then a quart in the bowl and a cup in the tank. Water heaters get shut off at the breaker or gas valve and drained through the bottom valve with a hot faucet open somewhere to break the vacuum.

Boilers and Hydronic Heat

Many Vermont second homes heat with an oil or propane boiler feeding baseboard radiators, and that system holds water in every loop. For a full shutdown, the boiler and all zones need to be drained, or the system needs to be filled with a glycol antifreeze mix. Draining a hydronic system is a job for a heating technician, and it costs $200 to $500 depending on the number of zones.

Glycol is the alternative many owners choose. A technician replaces the water in the loops with a propylene glycol mix rated for the expected low temperature, which protects the system whether the heat is on or off. It costs $400 to $1,000 up front and lasts several seasons, and it removes the single biggest freeze risk in a hydronic house.

Wells and Pressure Tanks

Drilled wells with submersible pumps sit below frost depth and need only the power shut off. The pressure tank drains through its bottom valve, and the line from the well should drain back through the pitless adapter at the casing. Shallow wells with jet pumps need the pump housing drained through its plug, since a jet pump cracks if it freezes full.

Water softeners and filtration systems, common in Vermont because of iron and hardness, need to be bypassed and drained, with RV antifreeze in the brine tank per the manufacturer.

The Warm House

The thermostat setting is the first decision. Most Vermont plumbers recommend 50 to 55 degrees for an unoccupied house with plumbing in exterior walls, and 45 is the floor for a well-insulated house with interior plumbing runs. Every degree costs fuel over a five-month winter, so the setting is a tradeoff between the oil bill and the margin for a cold snap.

A smart thermostat with remote access lets you check the temperature from anywhere and turn the heat up before a visit. Pair it with a freeze alarm that runs on battery or cellular rather than Wi-Fi alone, so it still reports when the power fails. A water leak sensor near the water heater and under the kitchen sink is cheap insurance.

Shut off the main water valve when you leave and drain the lines below it if you can. A house with the heat on and the water off cannot flood even if a pipe does freeze and split, since there is no supply pressure behind it. Many ski-country owners do this every time they leave.

Fuel and the Boiler

An oil or propane boiler running at 52 degrees through a Vermont winter burns a meaningful amount of fuel, and running out is the most common cause of a frozen ski house. Set up automatic delivery with your fuel dealer, and confirm the tank is full in November. A 275-gallon oil tank at a low setting may last six to eight weeks in January, less in a cold year.

Have the boiler serviced in the fall. A technician cleaning and tuning an oil boiler costs $150 to $300 in most of Vermont, and a nozzle failure in a house nobody is watching is exactly the scenario the freeze alarm exists for.

Someone Nearby

A caretaker or property manager who checks the house after storms, watches the driveway, and responds to a freeze alarm is standard in Stowe, Killington, and the Mad River Valley. Monthly fees for basic checks run $75 to $200, and plowing, shoveling, and emergency response are usually billed separately. For an owner in Boston or New York, that person is the difference between a $200 service call and a $20,000 insurance claim.

Roofs, Ice Dams, and the Driveway

Vermont roofs carry two to five feet of snow in a normal winter, more in the mountains. A house that is kept warm melts snow from the inside, and that meltwater refreezes at the cold eaves into ice dams that push water back under the shingles. Attic insulation and ventilation are the long-term fix, and roof rakes and heat cables are the short-term one.

A shut-down house does not form ice dams, since the roof stays cold, but it still carries the snow load. Older camps with shallow roofs and long spans should be shoveled after big storms. Roof shoveling in Vermont runs $200 to $500 per visit and is worth it on any roof that has ever sagged.

The driveway matters more than people expect. A house on a steep private road in Warren or Jay is unreachable without plowing, and plow contractors in ski towns fill their routes by October. Book early, and if the house will be shut down, tell the plow driver so they can skip it after small storms and clear it once before spring.

If any of the plumbing side is beyond what you want to do yourself, a plumber who winterizes seasonal homes can handle the full drain-down for roughly $200 to $450 depending on the system, and most will bundle the spring restart. The rest of our Vermont blog covers other seasonal questions for homeowners around the state.

What Your Insurer Expects

Most homeowner policies in Vermont contain a clause that limits or excludes freeze damage if the house is unoccupied and the owner did not either maintain heat or shut off the water and drain the system. Read yours. Some require a specific minimum temperature, and some require that a freeze alarm or a regular check be in place.

Vacancy clauses are separate. A house unoccupied for more than 30 or 60 days can lose certain coverages entirely under a standard policy, and second-home owners often need a seasonal or secondary residence endorsement. An agent in Vermont will know the terms, and the premium difference is small compared with a denied claim.

Comparing the Cost

A full shutdown with a plumber costs $200 to $450 in the fall and a similar amount for the spring restart, plus $200 to $500 to drain a boiler if you have one. Fuel cost is close to zero. Total for the winter is usually under $1,200.

A warm house costs $1,500 to $4,000 in fuel over the winter depending on the house and the year, plus $75 to $200 a month for a caretaker and a few hundred for the fall boiler service. The total is often $3,000 to $6,000. What you get for the difference is a house you can use on any weekend, which for a ski home is the whole point.

Frequently Asked Questions

What temperature should I leave a Vermont second home at?

Most plumbers recommend 50 to 55 degrees for an unoccupied house with plumbing in exterior walls. A well-insulated house with interior plumbing runs can go to 45, but the fuel savings are modest and the margin for a cold snap shrinks.

Should I shut off the water even if the heat stays on?

Yes. Shutting the main valve and draining below it means a frozen pipe cannot flood the house, because there is no supply pressure. It takes two minutes each time you leave.

How much does it cost to have a plumber winterize a house in Vermont?

Roughly $200 to $450 for a full drain-down with antifreeze in the traps. Draining or adding glycol to a hydronic boiler system is extra, usually $200 to $1,000 depending on the approach.

Do I need a caretaker for a ski house?

If you live more than an hour away and keep the heat on, someone local should be able to respond to a freeze alarm and check after storms. Basic monthly checks in Stowe, Killington, and the Mad River Valley run $75 to $200.

Will my insurance cover a frozen pipe in a second home?

Only if you met the policy's conditions, which usually means maintaining heat or shutting off and draining the water. Check for a vacancy clause too, since a house empty for more than 30 or 60 days can lose coverage without a seasonal endorsement.