How much should I budget for home maintenance each year?

The common rule is 1–2% of your home's value per year, or about $1 per square foot. For a $400,000 home that is $4,000–$8,000, which covers routine upkeep plus a reserve for bigger items like a roof or water heater. Newer homes run toward the low end; homes over 30 years old toward the high end.

What is the single most important maintenance task?

Keeping water away from the house: clean gutters, working downspout extensions, and grading that slopes away from the foundation. Water is behind the majority of expensive home repairs — foundation cracks, rotted framing, mold, and basement flooding.

Should I hire an HVAC tune-up every year?

Yes for the heating system in fall and the AC in spring. A $100–$200 tune-up catches failing capacitors, dirty coils, and refrigerant issues before they take the system down on the hottest day of the year. It also keeps most manufacturer warranties valid.

How often should I test smoke and carbon monoxide detectors?

Test monthly and replace batteries twice a year (the daylight-saving changes are the easy reminder). Replace smoke detectors every 10 years and CO detectors every 5–7 years; the manufacture date is printed on the back.

The Seasonal Home Maintenance Checklist Every Homeowner Needs

Almost every expensive home repair started as a cheap one. The $8,000 foundation job began as a clogged gutter. The $6,000 furnace replacement began as a $12 filter nobody changed. The $15,000 mold remediation began as a slow drip under the sink.

This checklist is organized by season so the tasks land when they matter. Most take 15–30 minutes. Do them and you will avoid the majority of surprise repairs; skip them and you are essentially self-insuring against a four-figure bill.

Every month (10 minutes)

Check the HVAC filter; replace if gray (every 30–90 days depending on filter and pets)
Test smoke and CO detectors
Run water in unused sinks and tubs to keep drain traps from drying out
Clean the range hood filter (dishwasher-safe on most models)
Check under sinks and around the water heater for moisture
Pour a kettle of boiling water down slow drains (not on PVC if it's boiling — hot tap water for those)

Spring (March–April)

Spring is about damage assessment after winter and getting the cooling system ready before you need it.

Exterior

Walk the roof line from the ground with binoculars: lifted or missing shingles, damaged flashing, moss
Clean gutters and downspouts; confirm extensions carry water at least 4–6 feet from the foundation
Inspect the foundation for new cracks; hairline is normal, anything you can fit a coin into gets a pro
Check grading: soil should slope away from the house about 6 inches over the first 10 feet
Inspect siding, trim, and caulk around windows and doors; recaulk gaps
Turn on exterior hose bibs and check for leaks from freeze damage
Inspect the deck: loose boards, popped nails, and soft spots; reseal if water no longer beads
Service the lawn mower: oil, blade sharpening, spark plug

Systems

Schedule an AC tune-up before the first hot week (rates are lower in April than June)
Clear leaves and debris from around the outdoor AC unit; keep 2 feet of clearance
Rinse the outdoor condenser coil with a garden hose (power off first, spray from inside out)
Test the sump pump by pouring a bucket of water into the pit
Check the water heater's temperature-pressure relief valve and look for corrosion at fittings
Reverse ceiling fans to counterclockwise
Clean dryer vent duct from the dryer to the exterior hood

Summer (June–July)

Summer tasks are mostly outdoor and preventive.

Inspect and clean window screens; repair tears
Check the irrigation system for broken heads and overspray onto the house (see our [lawn watering guide](/tips/smarter-lawn-watering-cut-water-bill/))
Trim trees and shrubs at least 3 feet from the house and roof
Inspect the attic on a hot day for daylight through the roof, wet insulation, or pest activity
Check attic ventilation: soffit vents unblocked, ridge or gable vents clear
Power-wash or scrub siding and check for mildew on the shady side
Inspect garage door: lubricate rollers and hinges, test the auto-reverse safety
Flush the water heater (see the [full guide](/tips/flush-your-water-heater/))
Check the refrigerator coils and vacuum the dust
Look for wasp, hornet, and carpenter bee activity in eaves and deck framing

Fall (September–October)

Fall is the most important season on this list. You are getting ahead of freezing temperatures and the heating system’s heaviest use.

Exterior

Clean gutters after the leaves drop (and again in late November if you have a lot of trees)
Drain and store hoses; shut off and drain exterior hose bibs, or install frost-free covers
Blow out or drain the irrigation system before the first freeze
Seal driveway and walkway cracks before water gets in and freezes
Inspect the roof and flashing again; replace any damaged shingles before snow
Check weatherstripping on doors and windows; replace what's cracked or flattened
Store patio furniture and cover the grill
Cut the lawn short for the final mow and apply fall fertilizer

Systems

Schedule a furnace or boiler tune-up
Replace the HVAC filter and buy a season's supply
Test the heat before you need it: run it for 15 minutes on a mild day
Have the chimney inspected and cleaned if you use the fireplace more than a few times a year
Reverse ceiling fans to clockwise on low
Replace smoke and CO detector batteries (daylight-saving weekend)
Inspect the water heater for rust or leaks; a tank over 10 years old should be on your replacement radar
Insulate exposed water pipes in unheated spaces

Winter (December–January)

Winter maintenance is about monitoring, not projects.

Check for ice dams after heavy snow; icicles along the eaves mean heat is escaping through the roof
Keep snow cleared from the furnace and dryer exhaust vents and away from the foundation
Run bathroom fans during and 20 minutes after showers to control condensation
Watch for frost or condensation on the inside of windows — a sign of humidity or air-leak problems
Check the basement or crawlspace after thaws for water intrusion
Inspect the attic once mid-winter for frost on the underside of the roof deck (means air leaks or poor ventilation)
Keep interior doors open to balance heat, and keep the thermostat at 55°F minimum if traveling
Review your homeowners insurance policy before renewal (see [9 ways to lower it](/tips/lower-homeowners-insurance-premium/))

The once-a-year list

Some tasks do not fit a season. Pick a date and do them annually:

Deep-clean the dryer vent all the way to the exterior (lint fires cause thousands of house fires a year)
Drain a few gallons from the water heater to clear sediment
Test the GFCI outlets in bathrooms, kitchen, garage, and outdoors
Inspect the electrical panel for scorch marks, buzzing, or a warm cover
Check caulk around tubs and showers and recaulk before water gets behind the tile
Vacuum bathroom exhaust fan grilles and confirm they actually move air (a tissue should stick to the grille)
Photograph every room and your major possessions for insurance records
Replace the water filter in the fridge and any whole-house filters
Review the maintenance reserve. If you have not set aside 1% of your home’s value this year, start now

Print this, do the fall list before anything else, and you will have covered the tasks that prevent the most expensive failures in a house.