A vacant home can develop expensive problems quickly when Michigan temperatures plunge. Frozen pipes, a failed furnace, a blocked sump pump discharge line, and water damage can all happen while no one is there to notice.
Whether you are leaving your home for a few weeks, managing a rental property, or preparing an investment home for sale, winter protection requires more than turning the thermostat down and locking the door.
The right plan depends on your plumbing layout, heating system, length of vacancy, insurance requirements, and whether someone can check the property regularly. Use this guide as a starting point, then consult a qualified HVAC or plumbing professional for recommendations specific to your home.
Keep the Heat On: But Do Not Guess
For a home with active plumbing, shutting the heat off blindly is one of the riskiest winter decisions you can make. Michigan’s MI Ready frozen pipe guidance recommends keeping an unattended home at no lower than 55°F.
That temperature is a general starting point, not a guarantee. A home with plumbing in an exterior wall, crawl space, attic, garage, or poorly insulated room may require a different strategy. Some properties also have multiple heating zones or hydronic piping that need special attention.
Before you leave:
- Confirm the thermostat is working accurately.
- Set a reliable temperature appropriate for the home and plumbing.
- Keep the furnace, boiler, or heat pump connected to power.
- Make sure fuel tanks have enough supply for the entire absence.
- Avoid placing furniture, boxes, or other items over supply registers.
- Leave interior doors open where safe so warm air can circulate.
If the plumbing is fully drained and professionally winterized, the heating plan may be different. Even then, maintaining some heat can help protect the structure, finishes, and contents.
Add Temperature Monitoring
A thermostat setting does not help if the furnace loses power or stops operating. Install a smart thermostat, low-temperature alarm, security system sensor, or another monitoring device that can alert you when indoor temperatures fall.
Your monitoring plan should identify:
- The temperature at which you receive an alert
- Who receives the alert
- Who can access the property
- Who can respond after hours
- What happens if the internet or cellular connection fails
A neighbor, property manager, or trusted contact should physically check the home after severe weather and at regular intervals. Remote monitoring is helpful, but it cannot always identify a leaking pipe, blocked vent, tripped breaker, or failed sump pump.
Schedule Furnace Maintenance Before Departure
A furnace that runs continuously during a Michigan cold snap is working hard. Small problems that might go unnoticed during normal occupancy can become a complete heating failure when the home is vacant.
Schedule Furnace Maintenance before leaving. A professional inspection can help identify problems with the blower, ignition system, safety controls, burners, heat exchanger, thermostat, and electrical connections.
We also recommend:
- Installing a clean filter before departure
- Confirming the filter is the correct size and properly seated
- Clearing items from around the furnace
- Checking that return and supply airflow is unobstructed
- Confirming the furnace starts and cycles properly
- Recording the location of the furnace shutoff switch and electrical breaker
A clean filter supports proper airflow and reduces strain on the equipment. If the furnace has already shown warning signs: short cycling, unusual sounds, inconsistent heat, or repeated shutdowns: schedule furnace repair services before the property becomes vacant.
Our 3rd-generation, no-BS approach is simple: we provide honest recommendations, repair equipment when practical, and do not push unnecessary replacement.
Check Furnace Vents and Outdoor HVAC Equipment
Snow and ice can block furnace intake and exhaust pipes, especially on high-efficiency equipment with sidewall terminations. A blocked vent can cause the furnace to shut down or operate improperly.
Before leaving, inspect the exterior terminations and make sure they are clear of:
- Snow
- Ice
- Leaves
- Tall grass and other debris
- Stored items
- Shrubs or objects that restrict airflow
After heavy snow or drifting, your property contact should check these vents again. Never seal, cover, or modify a furnace vent to keep snow out. If you are unsure which pipes belong to the heating system, ask a professional.
Outdoor air-conditioning equipment generally does not need to run in winter, but it should remain clear of heavy debris and falling branches. Do not operate cooling equipment in freezing conditions unless the manufacturer specifically permits it.
Protect Exposed Plumbing and Pipes
Pipes are most vulnerable where warm indoor air does not reach them. Inspect plumbing in:
- Crawl spaces
- Unfinished basements
- Garages
- Attics
- Exterior walls
- Rooms above unheated spaces
- Areas near foundation or rim-joist penetrations
If you are keeping the water on, use appropriate pipe insulation and approved heat cable where needed. Seal drafts around pipe penetrations, wiring, vents, doors, and windows. Keep cabinet doors open under sinks on exterior walls when doing so will allow warmer air to reach the plumbing.
Disconnect garden hoses and shut off interior valves serving outdoor faucets. Open the exterior faucets to drain trapped water. Irrigation systems should also be drained or professionally blown out.
Do not rely on one generic thermostat setting to protect every pipe in every home. A plumbing inspection can reveal vulnerable sections that are hidden behind walls or below floors.
Decide Whether Full Winterization Is Best
For a home that will be vacant for an extended period, particularly one without dependable physical inspections, shutting off the main water and professionally winterizing the plumbing may provide the strongest protection against freeze damage.
Full winterization may include:
- Closing the main water shutoff
- Turning off the water heater according to manufacturer procedures
- Shutting off a well pump or pressure system when applicable
- Draining supply lines through faucets and low-point drains
- Draining the water heater and pressure tank when appropriate
- Protecting toilets, traps, floor drains, and appliance connections
- Disconnecting and draining outdoor plumbing
- Using only approved RV or propylene glycol antifreeze where needed
Automotive antifreeze should never be used in household plumbing.
Water heaters require care. Electric units can be damaged if power is restored while the tank is empty. Gas equipment must be shut down according to the manufacturer’s instructions. If you are not certain how to drain and restart the system safely, use a qualified plumber.
Also remember that shutting off the main water can affect residential fire sprinkler systems. Discuss the implications with your insurance agent and a qualified professional before winterizing.
For complex plumbing layouts, boilers, hydronic heating systems, fire sprinklers, or homes with a well, professional winterization is especially important.
Keep the Sump Pump Ready
A vacant home still faces groundwater, snowmelt, and ice-related drainage problems. Before departure:
- Clean the sump pit.
- Test the primary sump pump by adding water to the pit.
- Confirm the float switch moves freely.
- Check that the discharge pipe is connected and unobstructed.
- Protect the discharge line from freezing and freeze-back.
- Confirm the backup pump operates.
- Check the backup battery’s age and charge.
- Keep the sump pump circuit powered.
- Clear gutters and downspouts.
- Make sure downspouts direct water away from the foundation.
If the home has a battery backup, generator backup, or secondary pump, test the entire system rather than assuming it will work during an outage.
Protect Ductwork and Maintain Airflow
Ductwork affects how evenly heat moves through the home. Leaky, disconnected, or blocked ducts can leave certain rooms dangerously cold even when the furnace is operating.
Before leaving:
- Make sure supply registers and return grilles are open.
- Remove storage items from around ductwork.
- Check accessible ducts for separation or damage.
- Inspect insulation around ducts in attics and crawl spaces.
- Keep mechanical-room doors and airflow paths unobstructed.
- Do not close multiple registers to “save heat.”
Maintaining airflow helps the heating system operate as designed and reduces cold spots that can put plumbing at risk.
Inspect Doors, Windows, Insulation, and Vulnerable Rooms
Cold air can enter through small gaps and create freezing conditions around nearby pipes. Check weatherstripping around exterior doors, basement windows, garage doors, and attic access panels.
Pay special attention to:
- Unheated garages attached to the home
- Basement bathrooms
- Kitchens along exterior walls
- Crawl spaces
- Rooms over porches or additions
- Unfinished areas with plumbing
- Attic spaces above bathroom or kitchen piping
Repair obvious drafts and confirm insulation is in place. Never block required ventilation openings or furnace combustion air.
Manage Gas, Electrical, and Generator Concerns Safely
Keep fuel-burning equipment and generators operated safely and strictly according to manufacturer instructions. A portable generator must never be operated inside a home, garage, basement, or enclosed area.
Before departure:
- Do not disconnect power from the furnace, sump pump, or monitoring equipment.
- Label essential breakers and shutoffs.
- Secure unused rooms and utility areas.
- Confirm fuel supplies are adequate for the anticipated absence.
- Ask your utility provider or insurance company whether vacancy notification is required.
- Have a plan for restoring heat after an outage.
If power or heat fails, contact a qualified professional promptly. Do not enter a flooded electrical area, attempt unsafe furnace repairs, or restart equipment that has been exposed to water.
For urgent problems, emergency plumbing services and after-hours HVAC assistance may help limit damage. If a pipe has frozen, shut off the main water if it is safe to do so and arrange an inspection before turning the water back on.
Landlord and Property Manager Checklist
Landlords and property managers should create a written winter plan for every vacant property. Keep a copy at the property and with the emergency contact.
Document:
- Thermostat settings
- Water shutoff location
- Furnace, boiler, and water heater locations
- Sump pump and backup system status
- Utility shutoffs
- Recent maintenance and winterization receipts
- Dated photos of the property before departure
- Names and phone numbers for authorized contacts
- Access instructions, keys, and alarm information
Notify the insurance company and utilities when appropriate, and confirm how the policy defines “vacant” or “unoccupied.” Some policies require regular inspections, minimum temperatures, water shutoff, professional winterization, or other precautions.
Maintain clear access to the furnace, water heater, electrical panel, and main water shutoff. After major snow or ice events, arrange a property inspection rather than waiting for an alarm.
Printable Pre-Departure Checklist
Heating and monitoring
- Schedule Furnace Maintenance.
- Replace the furnace filter.
- Confirm the thermostat operates accurately.
- Set a property-appropriate temperature.
- Install low-temperature and power-failure alerts.
- Clear furnace intake and exhaust vents.
- Keep supply registers and return grilles open.
- Confirm fuel and electrical service.
Plumbing and water
- Decide whether to keep water on or fully winterize.
- Insulate vulnerable pipes.
- Seal drafts near plumbing.
- Disconnect garden hoses.
- Drain exterior faucets and irrigation systems.
- Drain and protect the water heater if winterizing.
- Protect toilets, traps, floor drains, and appliance connections.
- Confirm insurance requirements.
Sump pump and property
- Test the primary sump pump.
- Test the backup pump and battery.
- Check the discharge line for freezing risks.
- Clear gutters and downspouts.
- Inspect doors, windows, insulation, and vulnerable rooms.
- Take dated photos.
- Give access information to a trusted contact.
- Arrange checks after severe weather.
Prepare Before the Cold Arrives
Extreme cold is stressful enough without discovering a burst pipe or failed furnace from another state. A little planning, professional maintenance, and reliable monitoring can greatly reduce the chance of a costly surprise.
Michigan Heating, Cooling & Plumbing provides furnace maintenance, furnace repair services, plumbing inspections, winterization guidance, sump-pump support, and after-hours service for homeowners and property managers in Lapeer and surrounding communities.
We are a 3rd-generation family-owned company with a big appetite for serving more local markets, but our recommendations remain grounded in our no-BS philosophy: honest answers, fair pricing, and repairs when practical. Ask about current coupons and savings, flexible GoodLeap financing options, or request an online estimate before you leave.
When your vacant Michigan home needs a winter plan, make an appointment with our team.
Michigan Heating, Cooling & Plumbing
Website: www.michiganheating.com
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