Test smoke & CO alarms
Smoke & CO alarms
Working alarms are the single biggest factor in surviving a house fire.
- How often
- Every 6 mo
- Who
- DIY
- Cost
- Up to $30
- Time
- 15 min
A dead alarm offers zero warning when it matters most.
How & when to do itFour real seasons means a bit of everything, all year. Every home needs the basics, but your climate changes the priorities. This checklist flags the tasks that matter most in a mixed / temperate climate and puts them first.
Smoke & CO alarms
Working alarms are the single biggest factor in surviving a house fire.
A dead alarm offers zero warning when it matters most.
How & when to do itHeating & cooling (HVAC)
A clogged filter makes your system work harder, raising bills and shortening its life.
Frozen coils or a burned-out blower motor — a $1,500+ repair.
How & when to do itRoof & gutters
Clogged gutters send water into your foundation, fascia, and basement.
Foundation cracks and basement flooding — repairs run into the thousands.
How & when to do itHeating & cooling (HVAC)
Your AC pulls humidity from the air and drains it away; algae and sludge clog that line over time.
A backed-up drain overflows the pan and leaks water into ceilings and walls.
How & when to do itHeating & cooling (HVAC)
An annual tune-up catches small failures before peak summer/winter load.
A mid-heatwave breakdown when every tech is booked.
How & when to do itRoof & gutters
Spotting a few lifted shingles early prevents slow, hidden leaks.
A small leak can rot the deck and ruin insulation before you ever see a stain.
How & when to do itHeating & cooling (HVAC)
Dirty outdoor coils can't shed heat, so the system runs longer and works harder to cool.
Reduced efficiency, higher bills, and early compressor wear in peak heat.
How & when to do itRoof & gutters
Flashing around chimneys, vents, and valleys is where most roof leaks actually start.
Failed flashing leaks water into the attic long before shingles look worn.
How & when to do itExterior & siding
Fresh weatherstripping around doors and windows stops drafts and lowers heating and cooling bills.
Worn seals leak conditioned air all year, quietly raising every energy bill.
How & when to do itSmoke & CO alarms
Sensors degrade; manufacturers rate alarms for about 10 years.
An expired sensor may not trigger even when it appears to work.
How & when to do itExterior & siding
Ground should slope away from the house so rain doesn't pool at the foundation.
Water pooling at the foundation is a top cause of basement leaks.
How & when to do itExterior & siding
Removing dirt, mildew, and algae protects finishes and keeps siding from degrading early.
Built-up grime and mildew shorten the life of paint and siding.
How & when to do itExterior & siding
Fresh caulk keeps water and pests out and cuts drafts.
Water intrusion behind siding leads to rot and mold.
How & when to do itRoof & gutters
Downspouts should dump water at least several feet from the house, not at the foundation.
Water pooling at the base of the home is a top cause of basement leaks and settling.
How & when to do itExterior & siding
Sealing protects deck wood from moisture, UV, and rot, and inspection catches loose boards and fasteners.
An unsealed deck rots and can become a structural and safety hazard.
How & when to do itSmoke & CO alarms
Working alarms are the single biggest factor in surviving a house fire.
A dead alarm offers zero warning when it matters most.
How & when to do itSump pump
Pour a bucket of water in the pit and confirm it kicks on. Simple and vital.
A dead pump during a storm means a flooded basement overnight.
How & when to do itDryer vent
Lint is highly flammable and builds up where you can't see it.
Clogged dryer vents cause thousands of house fires every year.
How & when to do itWater heater
The temperature & pressure-relief valve is a safety device that prevents the tank from over-pressurizing.
A stuck TPR valve turns a water heater into a dangerous pressure vessel.
How & when to do itWhen a pipe bursts, every minute counts. Know where the valve is before you need it.
Thousands in water damage while you search for the shutoff during a flood.
How & when to do itHeating & cooling (HVAC)
A clogged filter makes your system work harder, raising bills and shortening its life.
Frozen coils or a burned-out blower motor — a $1,500+ repair.
How & when to do itElectrical
GFCI outlets near water protect you from shock — but they wear out silently.
A failed GFCI removes shock protection in kitchens and bathrooms.
How & when to do itRoof & gutters
Clogged gutters send water into your foundation, fascia, and basement.
Foundation cracks and basement flooding — repairs run into the thousands.
How & when to do itHeating & cooling (HVAC)
Your AC pulls humidity from the air and drains it away; algae and sludge clog that line over time.
A backed-up drain overflows the pan and leaks water into ceilings and walls.
How & when to do itPlumbing
A few drops of food coloring in the tank reveal a leaking flapper that quietly wastes water.
A silent toilet leak can waste hundreds of gallons a day and inflate your water bill.
How & when to do itHeating & cooling (HVAC)
An annual tune-up catches small failures before peak summer/winter load.
A mid-heatwave breakdown when every tech is booked.
How & when to do itWater heater
Sediment buildup wastes energy and corrodes the tank from the inside.
A ruptured tank that floods the floor — and a surprise $1,200 replacement.
How & when to do itRubber supply hoses are a top cause of catastrophic indoor flooding.
A burst hose can dump 600+ gallons an hour into your home.
How & when to do itRoof & gutters
Spotting a few lifted shingles early prevents slow, hidden leaks.
A small leak can rot the deck and ruin insulation before you ever see a stain.
How & when to do itWell water
Annual tests catch bacteria, nitrates, and changes you can't taste.
Contaminated water can go unnoticed until someone gets sick.
How & when to do itMajor appliances
Dusty coils make the fridge run hot and die years early.
Premature compressor failure — and spoiled groceries.
How & when to do itLawn & irrigation
Water left in lines freezes, expands, and cracks pipes and valves.
Burst irrigation lines and a spring full of repairs.
How & when to do itHome inventory
A simple photo walkthrough makes insurance claims far easier after a loss.
Without proof, claims get denied or shortchanged.
How & when to do itHeating & cooling (HVAC)
Dirty outdoor coils can't shed heat, so the system runs longer and works harder to cool.
Reduced efficiency, higher bills, and early compressor wear in peak heat.
How & when to do itPlumbing
A cheap gauge on a hose bib tells you if pressure is in the safe 40–60 psi range.
Excessive pressure stresses every pipe, fitting, and appliance until something bursts.
How & when to do itElectrical
Warm outlets, scorch marks, and frayed cords are early warnings of a fire hazard.
Damaged outlets and cords are a leading ignition source for electrical fires.
How & when to do itRoof & gutters
Flashing around chimneys, vents, and valleys is where most roof leaks actually start.
Failed flashing leaks water into the attic long before shingles look worn.
How & when to do itDryer vent
Lint slips past the screen and builds up in the housing your screen sits in, restricting airflow.
Hidden lint buildup is both a fire risk and the reason loads take two cycles to dry.
How & when to do itSump pump
Storms that flood basements often knock out power too; a backup battery keeps the pump running.
A power outage during a storm leaves the main pump dead exactly when you need it.
How & when to do itSeptic system
The effluent filter catches solids before they reach the drain field; it clogs and needs cleaning.
A clogged filter causes backups into the house and stresses the drain field.
How & when to do itWell water
A waterlogged pressure tank makes the pump cycle constantly, wearing it out fast.
Short-cycling burns out an expensive well pump years before its time.
How & when to do itGarage door
A balanced door stays put halfway open; if it slams down, the springs are failing.
An unbalanced door overloads the opener and can drop unexpectedly.
How & when to do itLawn & irrigation
The backflow preventer keeps irrigation water from siphoning back into your drinking supply.
A failed preventer can contaminate household water; many areas require testing.
How & when to do itExterior & siding
Fresh weatherstripping around doors and windows stops drafts and lowers heating and cooling bills.
Worn seals leak conditioned air all year, quietly raising every energy bill.
How & when to do itSeptic system
Routine pumping prevents backups and protects the drain field.
A failed drain field is a $10,000+ replacement.
How & when to do itWater heater
The sacrificial anode rod corrodes so the tank doesn't; replacing a spent rod can double tank life.
Once the rod is gone, the tank rusts from the inside and fails years early.
How & when to do itSmoke & CO alarms
Sensors degrade; manufacturers rate alarms for about 10 years.
An expired sensor may not trigger even when it appears to work.
How & when to do itMajor appliances
A clean filter means cleaner dishes and no funky smell.
Poor drainage and a shortened appliance life.
How & when to do itMajor appliances
A degreased filter lets the hood actually vent smoke, steam, and cooking grease.
A grease-clogged filter is a kitchen fire risk and leaves the hood useless.
How & when to do itClearing slow drains with hot water and a safe cleaner keeps small clogs from becoming blockages.
A neglected slow drain becomes a full backup that needs an emergency plumber.
How & when to do itGarage door
A few minutes with the right lubricant keeps the door quiet and the hardware from wearing out.
Dry, neglected hardware fails early and strains the opener motor.
How & when to do itMajor appliances
A fresh filter keeps drinking water and ice clean and protects the dispenser system.
An old filter stops filtering and can harbor bacteria and bad taste.
How & when to do itExterior & siding
Ground should slope away from the house so rain doesn't pool at the foundation.
Water pooling at the foundation is a top cause of basement leaks.
How & when to do itGarage door
The auto-reverse safety feature protects kids and pets.
A failed sensor turns a heavy door into a hazard.
How & when to do itExterior & siding
Removing dirt, mildew, and algae protects finishes and keeps siding from degrading early.
Built-up grime and mildew shorten the life of paint and siding.
How & when to do itLawn & irrigation
Slowly recharging the system and checking each head catches winter damage and misaligned spray.
Broken heads waste water and leave dry or flooded spots all season.
How & when to do itExterior & siding
Fresh caulk keeps water and pests out and cuts drafts.
Water intrusion behind siding leads to rot and mold.
How & when to do itWater heater
120°F is hot enough for comfort and safety while saving energy and preventing scalding.
Higher settings waste energy and risk scald burns, especially for kids.
How & when to do itRoof & gutters
Downspouts should dump water at least several feet from the house, not at the foundation.
Water pooling at the base of the home is a top cause of basement leaks and settling.
How & when to do itExterior & siding
Sealing protects deck wood from moisture, UV, and rot, and inspection catches loose boards and fasteners.
An unsealed deck rots and can become a structural and safety hazard.
How & when to do itElectrical
Older panels and aluminum wiring are known fire risks worth a pro's eyes.
Undetected wiring faults are a leading cause of house fires.
How & when to do itElectrical
A panel-mounted surge protector shields every device in the home from voltage spikes.
One storm surge can fry electronics, appliances, and HVAC boards at once.
How & when to do it