on October 19, 2026
Property Management Articles To winterize a vacant home, drain and protect every water line so nothing can freeze and burst while no one is there to catch it. Core steps: blow out lines, verify pressure, shut the main, drain the water heater, antifreeze traps and toilets, and hold 55°F. Pros in the Lula property maintenance network complete a 10-step flat-rate winterization with photos on every step.
You have a list of vacant doors heading into winter: units between residents and homes listed for sale. Nobody walks those units on a set schedule, so the first freeze arrives unwatched. A split line in an occupied home gets a resident call, while in an empty home it runs until the next showing or inspection.
Frozen pipes do their worst damage in empty homes. With outsourced maintenance, winterizing a vacant home comes down to scheduling: every unit needs the same scope before temperatures drop. This guide covers the 10-step checklist Lula Pros follow, plus heat settings, vacancy clauses, portfolio scheduling, and de-winterizing at the next turn.
Why Vacant Units Need Winterizing Before the First Freeze
Vacant units need winterizing because water left in the lines can freeze and split a pipe, then leak for days before anyone walks in. A scheduled winterization removes that water before the first hard freeze.
The Triple-I claims statistics report that about one in 60 insured homes has a water damage or freezing claim, based on 2018–2020 data. Triple-I puts the average water damage and freezing claim at $15,400 for 2019–2023. Both figures come from owner-occupied homeowners policies. Pipes in a vacant rental freeze the same way, and nobody’s home to catch it.
In an empty unit, the repair grows with every day the leak runs. Water soaks into flooring and drywall, and wall cavities left wet for weeks can turn into mold remediation plus added days vacant. Winterization belongs on the same seasonal list as the other preventive maintenance examples for rentals.
Freeze risk also starts earlier than many portfolios plan for. Per Consumer Reports on pipes, frozen pipes generally occur below 20°F, though uninsulated pipes in uninsulated spaces can freeze above that threshold.
Per State Farm freeze claims data, the carrier paid over $628 million on more than 20,000 freeze-related claims filed in 2024 through June 2025. State Farm’s average claim payment exceeded $30,000, and its definition includes freeze damage to foundations and slabs. That’s one carrier in 18 months.
Timing matters for cost as well as risk. Book early and every vacant unit gets a visit before seasonal demand peaks. Lula’s guide to reducing rental maintenance costs explains how scheduling seasonal work ahead of peak demand secures standard labor rates.
How to Winterize a Vacant Home, Step by Step
The sequence matters: start at the supply side and finish at the fixtures, so each step confirms the one before it. Below is the 10-step checklist Lula Pros follow on every vacant-unit winterization, with a photo taken at each step.
Shut Off the Water and Blow Out the Lines
Steps 1 through 4 empty the supply side and confirm the system is sealed. Each step gets its own photo.
- Open the main shutoff valve in the property and blow out all water lines. Compressed air pushes standing water out of every supply line.
- Check for held pressure. Held pressure means no leaks and a sealed system, and a drop means a leak to fix first.
- Turn water off at the main. With the lines empty, a closed main keeps new water from refilling them.
- Disconnect the water meter and leave it at the meter location. The meter stays at the property, ready for reconnection.
The pressure check proves the lines are sound before the unit sits for months. Leaving the disconnected meter in place keeps every part on site for de-winterizing.
Protect Traps, Toilets, and the Water Heater
Steps 5 through 8 handle the water that compressed air can’t clear. They also take the water heater out of service until de-winterizing.
- Pour RV antifreeze in all traps and toilets. Traps and toilet bowls hold water by design, so they get antifreeze instead of air.
- Tape toilets shut with painter’s tape. The tape tells a leasing agent or inspector that the toilet is out of service.
- Drain the water heater. An empty tank has no water to freeze and crack it.
- Shut off gas to the water heater, or turn off the breaker if electric. Heating an empty tank damages it, including the electric element.
Use the right antifreeze. The Purdue Extension antifreeze guidance (2022) supports propylene-glycol antifreeze, the type used in RV waste water systems, for drain traps and toilets. Purdue also advises against propylene glycol in water supply lines and warns that automotive ethylene glycol is unsafe anywhere in a home water system.
Set the Heat and Open the Cabinets
Steps 9 and 10 keep the house above freezing as a backup to the drained lines. Both depend on a working furnace.
- Set furnace to 55°. The heat protects any trap or low point that still holds water.
- Open cabinets under sinks to keep pipes warmer. Open doors let heated air reach pipes running along exterior walls.
The Red Cross frozen-pipe guidance advises leaving the heat on in cold weather, “set to a temperature no lower than 55° F.” That setting only works if the furnace runs all winter. Pair winterization with fall HVAC preventive maintenance on the same vacant units.
Heat On or Heat Off in a Winterized Unit
Keep the heat on at 55°F and drain the lines, because that pairing covers both failure modes. A failed furnace leaves no supply water to freeze, and the heat protects any trap still holding water.
| Approach | How It Works | Main Risk | Best Fit |
| Heat on at 55°F, lines drained | Full drain-down plus a furnace holding 55°F | Lowest of the three, since a furnace failure leaves no supply water to freeze | Any vacancy that runs through winter |
| Heat off, full drain | Lines blown out and drained, furnace off | Any water left in a trap or low point can freeze | Units where the heat can’t stay on |
| Heat on, water left on | Furnace holds temperature, lines stay full | Highest, since a furnace failure leaves full lines exposed | Short vacancies only |
Lula’s checklist does both: it drains the lines and holds the furnace at 55°F. Leaving the water on fails worst in a vacant unit. A furnace that quits during a cold snap has no one there to notice.
Vacancy Clauses and What Insurers Expect
Check the vacancy terms before a unit sits empty into winter. Per the Insurance Information Institute (vacancy clause explained), most homeowners policies limit or exclude coverage after “typically 30 to 60 consecutive days” of vacancy. That window varies by carrier and state.
Rentals often sit on landlord or dwelling policies with their own wording, so read the actual policy or endorsement. Triple-I also notes that insurers typically require proof that reasonable steps were taken to maintain a vacant home. Its list of vacant-home steps includes keeping the thermostat at least 55°F in winter.
Photos on every step give the owner a record of what was done in each unit. Coverage decisions stay with the carrier, so have the owner confirm terms with their agent before the unit goes vacant.
Winterizing a Vacant Portfolio With Lula Flat-Rate Maintenance
Winterizing a list of vacant doors through a rotating set of service companies breaks down fast. Scope changes from crew to crew and quotes ping-pong. Nobody sends proof the traps got antifreeze.
Lula flat-rate winterization sets one fixed scope: the same 10 steps on every unit, where the quote is the invoice. Pros photograph each step of the checklist, so you have proof the home is protected without sending someone to check. If a Pro finds a needed repair on site, such as a cracked supply line, you get a separate quote for it.
Winterization sits in the catalog behind flat-rate maintenance pricing, alongside 600+ other common jobs. Flat-rate pricing holds steady across markets even as regional labor and material costs vary.
The service is designed for vacant and unoccupied units. The work runs through 9,000+ vetted, licensed, and insured Pros across 50+ US markets, with 350,000+ properties served.
Flat-rate maintenance is available for all Lula customers, covered in the maintenance coordination guide. To start, send your account manager your unit list. We’ll schedule every home before temperatures drop.
Bringing a Winterized Unit Back Online
De-winterize as part of the make-ready, before the next resident moves in. Work in reverse order from the winterization checklist:
- Reconnect the water meter at its location.
- Restore water slowly at the main so the lines refill gradually.
- Walk every fixture and supply line for leaks.
- Refill the water heater, then restore gas or turn the breaker back on.
- Remove the painter’s tape from every toilet.
- Flush the antifreeze from traps and toilets.
Building these steps into the turn keeps de-winterizing on the same schedule as cleaning and repairs. For the full turn scope, see what a make-ready covers.
Get Every Vacant Unit Protected Before the First Freeze
A scheduled winterization takes one visit per unit and leaves a photo record for the owner. A burst line found weeks later means a water damage repair plus added days vacant.
Lula property maintenance handles winterization as one flat-rate job with the same 10 steps on every vacant door. Send the unit list while there’s time to schedule every home ahead of the cold.
New to Lula’s maintenance coordination? Get Started.
Vacant Home Winterization FAQ
How Long Can a Winterized House Sit Vacant?
A winterized house can sit through the full season, since the protection holds until the unit is de-winterized. It still needs periodic checks for roof damage, break-ins, and furnace failure.
How Often Should a Vacant Home Be Checked in Winter?
Walk the unit after every storm and hard cold snap, and confirm the thermostat still reads 55°F. Ask the insurer whether the vacancy terms require inspections on a set schedule.
Does a Winterized House Need the Electricity On?
Yes, when the heat stays at 55°F, because the furnace needs power to run, including gas furnaces with electric ignition and blowers. The water heater breaker stays off while everything the furnace needs stays on.
What Happens If a Vacant House Is Not Winterized?
Standing water expands as it freezes and splits the pipe, and the leak runs until someone walks in. Water left in a toilet tank or water heater can also crack the fixture itself, and a repair becomes a replacement.
Can Winterization Be Done on an Occupied Home?
No, Lula’s winterization is designed for vacant and unoccupied units, because a home with the water off and toilets taped shut can’t be lived in. If a resident moves in mid-winter, schedule the de-winterization before move-in day.
Anything found written in this article was written solely for informational purposes. We advise that you receive professional advice if you plan to move forward with any of the information found. You agree that neither Lula or the author are liable for any damages that arise from the use of the information found within this article
