Short answer
A home maintenance checklist that prevents water, fire, and mold damage in Middle Tennessee comes down to a few jobs on a schedule. Test smoke and carbon monoxide alarms monthly, clean the dryer vent at least once a year, keep gutters clear and downspouts pointed away from the foundation, drain outdoor faucets and close crawl space vents before the first freeze, replace washing machine hoses every five years, keep indoor humidity below 60 percent, and learn where your main water shut-off valve is before you need it.
Why does routine maintenance prevent so much damage?
Water damage is far more common than fire damage. In an average year from 2019 to 2023, about 1.5 of every 100 insured homes filed a water damage or freezing claim, against about 0.23 of every 100 for fire and lightning, according to the Insurance Information Institute. Fire claims cost more each, an average of $88,170 against $15,400 for water, but water claims come in more than six times as often.
Neglected maintenance shows up in the fire data too. Failure to clean was the leading factor in home clothes dryer fires from 2018 to 2020, involved in 31 percent of them, according to the U.S. Fire Administration.
Mold depends on how fast things dry. The EPA's guide to mold and moisture says that if wet materials are dried within 24 to 48 hours of a leak, in most cases mold will not grow. Across all three, an expensive failure often starts with a small part nobody looked at: a lint-packed duct, a ten-year-old hose, a clogged gutter.
What should you check every month?
- Test every smoke alarm by pressing its test button. The U.S. Fire Administration says to test smoke alarms every month.
- Test carbon monoxide alarms the same day. NFPA says to test them at least once a month, and the Consumer Product Safety Commission says they belong on every level of the home and outside sleeping areas.
- Clean the dryer's lint filter before and after every load, as the U.S. Fire Administration's dryer safety flyer recommends, and never run the dryer without the filter in place.
- Look under sinks, behind the washer and dishwasher, and around the base of the water heater for drips, stains, or rust. Slow leaks are the ones that run for months before anyone notices.
What should you do in the fall, before the first freeze?
Clean the dryer vent, not just the filter
NFPA's dryer safety sheet says to clean lint out of the vent pipe once a year, or more often if clothes are taking longer than normal to dry. While you are back there, check that the vent is not crushed or kinked and that the outdoor flap opens when the dryer runs. If the dryer runs on gas, NFPA also says to have a qualified professional inspect it to make sure the gas line and connection are intact and free of leaks. Fall is a sensible time: in USFA data from 2008 to 2010, residential dryer fires were more common in fall and winter and peaked in January.
Clear gutters and check the downspouts
Clean out leaves and debris, and make sure each downspout sends water at least 3 to 4 feet away from the foundation, as IBHS recommends. The EPA adds that the ground around the house should slope away from the foundation so water does not collect there.
Shut down the outdoor faucets
Disconnect, drain, and store garden hoses. The American Red Cross recommends closing the indoor valve that feeds each outdoor faucet, then opening the faucet outside so the line can drain, and leaving it open so any water left inside has room to expand without breaking the pipe. IBHS adds that homes built before 2010 typically do not have frost-proof outdoor faucets, and that faucets without that protection should be insulated as well. Nashville's Metro Water Services also recommends covering outdoor spigots in cold weather.
Close the crawl space vents
Metro Water Services advises closing crawl space vents in cold weather to protect the pipes underneath. If your home sits on a crawl space, the supply lines running through it are exposed to whatever the outside air is doing.
Find and test your main water shut-off valve
Metro Water Services says the valve may be in the basement, under the kitchen sink, in a utility closet, near the water heater, or under the house in the crawl space. Once you find it, test it. If you cannot find it, or the house does not have one, Metro Water recommends calling a plumber, and notes that it cannot respond to private plumbing problems itself.
Check the age of your smoke alarms
Check the manufacture date on each alarm. The U.S. Fire Administration says smoke alarms need to be replaced 10 years from that date, not from when you bought them.
What should you watch for in winter?
Frozen pipes are the winter risk to plan for. IBHS notes that older homes, especially in Southern states, can be more vulnerable to below-freezing temperatures and are more likely to have inadequate insulation. Our guide to keeping pipes from freezing covers what to do before, during, and after a hard freeze, including how often Nashville gets cold enough.
Keep the fall work in place through the season: hoses off, outdoor faucets shut down, crawl space vents closed. If a pipe does burst, the shut-off valve you tested in the fall is the first thing you will need.
What should you do in the spring?
Test the sump pump before the spring rains
NDSU Extension describes a simple test. First make sure the discharge pipe outside is not plugged and carries water away from the house. Then pour water into the pit until the float turns the pump on, or, if the pit is dry, lift the float for about 10 seconds. Make sure the pump turns on and off at least twice. FEMA's flood guidance for homeowners points out that a sump pump will not run when the power is out unless battery storage or a generator is behind it, which matters most in exactly the storms that fill the pit.
Inspect the washing machine hoses
Look for bulges, cracks, and drips at the fittings. GE Appliances and Whirlpool both recommend replacing washer fill hoses every five years, and GE's guidance covers its braided stainless steel hoses too. Write the install date on the new hose with a marker so the next replacement is not a guess.
Drain or flush the water heater
The U.S. Department of Energy's Energy Savers guide recommends draining a quart of water from the tank every three months to remove sediment, following the manufacturer's directions. Manufacturers such as Rheem recommend a full flush at least once a year, and more often with hard water. Rheem's first step is to turn off the electricity or gas and the cold water inlet, and it says to run the drain hose to a container or area the hot water will not damage. The water drains out hot, so keep clear of the end of the hose. Rheem's last steps refill the tank with the hot water taps open, and the electricity or gas goes back on only once water is flowing from them. If you are unsure about handling the gas or electrical parts, Rheem suggests calling a professional.
Clear the gutters again
Spring storms bring down a second round of debris. A gutter that overflows dumps roof water right at the foundation.
What should you do in summer, when humidity is the problem?
- Keep indoor humidity below 60 percent, and ideally between 30 and 50 percent, as the EPA recommends; the CDC sets a stricter ceiling of 50 percent. The EPA notes that a humidity meter costs about $10 to $50 at many hardware stores.
- Keep the air conditioner draining. The EPA says to keep drip pans clean and drain lines flowing, and the Department of Energy's home cooling guide suggests occasionally passing a stiff wire through the unit's drain channels to prevent clogs, and checking the evaporator coil every year.
- Look at the crawl space. The Department of Energy's building science guidance says moisture in crawl spaces can promote mold and rot along the floor joists, and recommends covering the crawl space floor with polyethylene sheeting of at least 6 mil, sealed to the walls and piers, whether the crawl space is vented or not.
- Dry anything that gets wet, fast. A leak dried within 24 to 48 hours usually does not turn into mold, per the EPA. If it already has, our guide to whether bleach kills mold explains what works.
How often should you replace alarms, hoses, and water heaters?
| Item | What to do | Source |
|---|---|---|
| Smoke alarms | Test monthly; replace 10 years from the manufacture date | U.S. Fire Administration |
| Carbon monoxide alarms | Test monthly; replace according to the manufacturer | NFPA |
| Dryer vent | Clean once a year, or sooner if drying slows | NFPA |
| Washing machine hoses | Replace every 5 years, including braided steel | GE Appliances |
| Water heater sediment | Drain a quart every 3 months | U.S. Department of Energy |
| Water heater flush | At least once a year; more often with hard water | Rheem |
| Tank water heater life | About 8 to 12 years per manufacturers; 10 to 15 per DOE | A. O. Smith; DOE, 2013 |
Where sources disagree, the table names both. Water heater life is the clearest example: manufacturers including A. O. Smith and Rheem put the typical tank at about 8 to 12 years, while the Department of Energy's 2013 Energy Savers guide says most last 10 to 15 years and suggests starting to research a replacement once yours passes 7.
Is a water leak detector worth it?
A leak detector is often worth it for a house that sits empty during the workday or over a trip. The EPA's WaterSense guide to leak detection devices says models with an automatic shut-off valve can stop the water supply during a catastrophic leak, such as a failed water heater, a burst pipe, or a washing machine hose failure, before it becomes large-scale damage. The same guide notes that some insurers offer discounts for homes with a leak detection or flow monitoring device, so ask yours.
A detector is not a substitute for knowing your shut-off valve. A detector catches the leak; the valve is how you or anyone else in the house stops it.
What maintenance mistakes lead to water and fire damage?
- Cleaning the lint filter but never the vent duct. The duct is where lint collects out of sight, and failure to clean is the leading factor in dryer fires.
- Leaving a garden hose connected over the winter. IBHS says to remove, drain, and store hoses before freezing weather.
- Assuming braided steel washer hoses last forever. GE recommends replacing its stainless steel hoses every five years as well.
- Changing smoke alarm batteries but keeping alarms past 10 years old.
- Learning where the main shut-off valve is while water is already on the floor.
- Treating a damp crawl space as normal. Moisture there can feed mold and rot in the floor framing above it.
FAQ
Frequently asked questions
How often should a dryer vent be cleaned?
How often should washing machine hoses be replaced?
How long does a water heater last?
How often should smoke alarms be replaced?
What indoor humidity prevents mold?
Where is my main water shut-off valve?
Should I close my crawl space vents in winter?
The takeaway
A home maintenance checklist that prevents damage is short: test alarms monthly, clean the dryer vent yearly, keep gutters clear and downspouts long, shut down outdoor faucets and close crawl space vents before the first freeze, replace washer hoses every five years, keep humidity below 60 percent, and know where the water shut-off valve is.
Sources
- U.S. EPA WaterSense: Guide to Leak Detection and Flow Monitoring Devices (2026)
- U.S. Fire Administration: Appliance and Electrical Fire Safety
- U.S. Fire Administration: Clothes Dryer Fire Safety flyer
- U.S. Fire Administration: Clothes Dryer Fires in Residential Buildings (2008 to 2010)
- NFPA: Clothes Dryer Safety tip sheet
- U.S. Fire Administration: Smoke Alarms
- NFPA: Carbon Monoxide
- U.S. Consumer Product Safety Commission: CO Alarms
- GE Appliances: Washer stainless steel inlet fill hoses
- Whirlpool: Checking the fill hoses
- U.S. Department of Energy: Energy Savers guide
- Rheem: How often to flush your water heater
- A. O. Smith: When to repair or replace your water heater
- Rheem: Water heater lifespan, when to repair or replace
- U.S. CDC: About Mold
- U.S. EPA: A Brief Guide to Mold, Moisture, and Your Home
- IBHS: Winter Ready Home
- NDSU Extension: Now is the time to check your sump pump
- FEMA: Urban Flooding, Guidance for Homeowners and Renters (2024, revised 2025)
- U.S. Department of Energy: Capillary break at crawlspace floors
- U.S. Department of Energy: Home Cooling 101
- Nashville Metro Water Services: Winter Weather Notice
- American Red Cross: Preventing and Thawing Frozen Pipes
- Insurance Information Institute: Facts and statistics, homeowners and renters insurance