Home Maintenance Checklist: Monthly and Seasonal Tasks

These take 15-20 minutes total and prevent the most common problems:

Check HVAC air filter. Replace if dirty (every 1-3 months depending on conditions). This is the single most impactful maintenance task in your entire home... a $5 filter protects a $5,000 HVAC system.

Test smoke detectors and carbon monoxide detectors by pressing the test button.

Check under sinks for leaks. Look for moisture, drips, or water stains in the cabinet under every sink. A small leak caught early is free to tighten. A small leak ignored for 6 months is a $2,000 mold problem.

Run water in unused fixtures. If you have a guest bathroom or basement sink that rarely gets used, run water for 30 seconds to prevent drain traps from drying out (dry traps let sewer gas into the house).

Check the sump pump (if you have one). Pour a bucket of water into the pit and verify the pump activates and pumps it out.

Inspect the water heater for leaks. Look at the base, T&P valve discharge pipe, and supply connections.

Spring is the big maintenance season. Winter beat up your house and summer is coming.

Clean gutters and downspouts. Remove leaves and debris, flush with a hose, and verify water flows freely to the downspout discharge. Clogged gutters cause fascia rot, foundation damage, and ice dams next winter.

Inspect the roof from the ground. Look for missing shingles, damaged flashing, or anything that looks different from last year. After winter storms, this is when damage shows up.

Service the AC. Schedule a professional tune-up ($80-$150) before the cooling season. The tech checks refrigerant, cleans coils, and tests electrical components. Do this in April or May... by June, every HVAC company is booked.

Check exterior caulking around windows, doors, and trim. Recaulk any gaps or cracks. This prevents water intrusion and improves energy efficiency.

Test the irrigation system. Run each zone and walk the yard. Look for broken heads, misaligned spray, and dry spots. Fix issues before the heat arrives.

Power wash the driveway, walkways, and siding. Winter grime, mold, and algae come off easily with a pressure washer.

Inspect the deck. Look for loose boards, popped nails, and wood rot. Clean and stain/seal if the wood doesn't bead water when you drip some on it.

Clean dryer vent. Remove lint buildup from the duct and exterior vent cap. This prevents fires and improves dryer efficiency.

Summer maintenance is about keeping cooling efficient and addressing outdoor projects.

Clean AC condenser coils. The outdoor unit accumulates dirt, pollen, and cottonwood that blocks airflow. Rinse with a garden hose (gently, from inside out) every 4-6 weeks during peak cooling.

Maintain the lawn and landscape. Keep vegetation trimmed at least 12 inches from the house and 2 feet from the AC condenser. Overgrown plants trap moisture against siding and restrict condenser airflow.

Inspect and clean window wells. Remove debris that could trap water and direct it toward the foundation.

Check the attic. On a hot day, check for adequate ventilation (you should feel airflow), look for signs of roof leaks (water stains on rafters or sheathing), and verify insulation depth.

Touch up exterior paint where needed. Peeling or bare spots let moisture into the wood. A 30-minute touch-up prevents wood rot that costs hundreds to repair.

Inspect and maintain the garage door. Lubricate tracks, hinges, and springs with silicone or lithium grease. Tighten loose hardware. Test the auto-reverse safety feature.

Fall is about preparing for winter. Everything you do now prevents cold-weather emergencies.

Schedule a furnace tune-up ($80-$150). Have it cleaned and inspected before heating season. The tech checks the heat exchanger for cracks (carbon monoxide risk), cleans burners, and tests safety controls.

Clean gutters again. Fall leaves are the biggest gutter-clogging event of the year. Clean them after the majority of leaves have dropped... late October or November in most areas.

Winterize the irrigation system. Blow out the lines with compressed air to prevent freeze damage. Shut off the outdoor water supply and disconnect garden hoses.

Seal air leaks. Check weatherstripping on exterior doors, caulk around windows, and foam-seal any gaps in the attic floor. This is the cheapest way to reduce heating costs.

Insulate exposed pipes. Pipes in unheated areas (garage, crawlspace, attic) should be wrapped with foam pipe insulation ($3-$8 for a 6-foot section) to prevent freezing.

Check the fireplace and chimney. If you use a wood-burning fireplace, have the chimney inspected and cleaned annually ($200-$300). Creosote buildup is a fire hazard.

Reverse ceiling fans. Set them to clockwise rotation on low speed to push warm air down from the ceiling. This saves 10-15% on heating.

Test the sump pump battery backup. Power outages are more common in fall and winter storms... exactly when you need the pump most.

Winter maintenance is minimal but critical for preventing freeze damage.

Keep the thermostat at 55°F minimum, even when away. This prevents pipes from freezing inside walls and under floors.

After heavy snow, check that exhaust vents (furnace, water heater, dryer) aren't blocked by snow or ice. Blocked vents cause carbon monoxide buildup inside the house.

Remove ice dams if they form on the roof eaves. Use a roof rake to pull snow off the first 3 feet of the roof edge. Don't hack at ice with tools... you'll damage the shingles.

Check the water heater's T&P valve. Lift the lever briefly... water should flow from the discharge pipe. If nothing comes out, the valve is stuck and needs replacement.

Monitor humidity inside the house. Winter air is dry, and excessive dryness causes wood floors to gap, trim to crack, and respiratory discomfort. Keep humidity between 30-40% with a humidifier if needed.

These bigger tasks need to happen once per year at any time:

Flush the water heater. Connect a garden hose to the drain valve and run a few gallons until the water runs clear. Removes sediment that reduces efficiency and accelerates tank corrosion.

Check the anode rod in the water heater (every 2-3 years). If it's less than half an inch thick, replace it ($20-$50 part). This single step extends the water heater's life by 2-5 years.

Inspect the attic for signs of pests, moisture, and insulation problems.

Have a termite inspection done ($75-$150, many pest companies offer free inspections). Especially important in the southeast, Gulf Coast, and California.

Test your garage door auto-reverse and photo-eye safety features.

Replace smoke detector batteries (or replace the detectors if they're past their expiration date).

Replace carbon monoxide detector batteries (and check the expiration date on the back).

Inspect the foundation for new cracks. Compare to previous years to see if existing cracks are growing.

Service the garbage disposal: grind ice cubes to clean the blades, then run citrus peels for freshness.