This monthly home maintenance checklist gives you a simple way to notice small changes before they become larger, more disruptive problems. You do not need to be a DIY expert or inspect every part of the house. Set aside 15 to 20 minutes, walk through these seven areas and record anything that may need attention.
Always follow manufacturer instructions and use qualified professionals for repairs involving electricity, gas, combustion equipment, structural concerns or work beyond your experience.
1. Check under sinks
Open the cabinets beneath kitchen, bathroom and utility sinks. Look for dripping connections, dampness, water stains, swelling, musty odors or visible mold-like growth.
Move stored products briefly so you can see the cabinet floor and back wall. If you find active water, shut off the appropriate supply only if you know how to do so safely and arrange the correct repair.
2. Look at the HVAC filter
Check the filter on the schedule recommended for your system and filter type. A filter may need attention sooner in a home with pets, renovation dust, wildfire smoke or heavy system use.
Replace it only with a compatible size and rating recommended for your equipment. Installing the wrong filter or placing it backward can reduce performance.
3. Test smoke and carbon-monoxide detectors
Use each detector’s test button and follow its manufacturer’s testing and replacement guidance. Confirm that units are unobstructed and have not been painted over or damaged.
Detector placement and requirements vary, so follow applicable local guidance. Treat an alarm or suspected gas or carbon-monoxide condition as an emergency and leave the home when instructed by local safety authorities.
4. Inspect the water-heater area
Look around the base and nearby connections for moisture, corrosion, unusual sounds or changes in performance. Keep the surrounding area clear according to the appliance instructions.
Do not remove panels or adjust fuel, electrical or pressure-related components unless you are qualified. Contact an appropriate professional if you notice leakage, scorching, gas odor or another safety concern.
5. Check the dryer area and vent
Clean the lint screen after each load and inspect the accessible area behind and around the dryer monthly. Look for crushed ducting, excess lint, unusual heat or longer drying times.
Dryer vent configurations differ. Follow the appliance instructions and arrange professional cleaning or repair when the exhaust path is inaccessible or performance changes.
6. Walk around the outside of your home
From the ground, look for drainage problems, standing water, damaged downspouts, vegetation touching the structure and visible changes to siding, trim, roof edges or exterior penetrations.
Avoid climbing onto the roof for a routine check. Use a qualified professional when closer inspection is needed.
7. Check doors, windows and exterior openings
Open and close frequently used doors and windows. Notice sticking, damaged screens, failed locks, deteriorated sealant or signs that water is entering around an opening.
Small seasonal changes can be normal, but a new or worsening problem deserves attention—especially when it appears with moisture or visible movement.
How to Use This Monthly Home Maintenance Checklist
Use the same order each month and keep a short dated note on your phone. Record what you checked, what changed and what needs follow-up. A consistent record makes it easier to distinguish a new issue from something stable.
Try this quick sequence:
- Begin under the sinks.
- Check the HVAC filter and detectors.
- Look around the water heater and dryer.
- Walk the exterior from the ground.
- Record any change that needs follow-up.
Explore more home maintenance guidance and use the visual-clutter reset when you want to make frequently checked areas easier to see and maintain.
This monthly home maintenance checklist cannot prevent every repair, but it can help you notice leaks, airflow changes, safety-device issues and exterior wear sooner.
Save the original Instagram checklist and follow @modernhomecompanion for practical ways to maintain, organize and enjoy your home.
