April maintenance for a mixed-humid climate

April9 tasks

1. This month
   Press the test button on every smoke and CO alarm.

   An alarm you have not heard in months may have a dead battery or sensor. NFPA recommends testing smoke alarms at least once a month.

   How

   Hold the test button until it sounds. Anything silent or chirping: replace the battery, or the whole alarm if it is past its date.

   MonthlyEvery homeNFPA: Smoke alarms
2. This month
   Check the HVAC filter and replace it if it is gray or clogged.

   ENERGY STAR advises inspecting filters monthly: a dirty filter raises energy costs and can damage the equipment, leading to early failure.

   How

   Turn the system off, slide the filter out, and match the size printed on its edge. Arrow on the frame points toward the blower.

   Every 3 monthsBecause of a system you told us aboutENERGY STAR: HVAC maintenance checklist
3. This month
   Press TEST and RESET on every GFCI outlet.

   GFCIs in kitchens, baths, garages and outdoors cut power when current leaks to ground. A failed one looks normal until it fails to trip.

   How

   Plug in a lamp, press TEST (the lamp should go off), then RESET. If it does not trip, have an electrician replace it.

   Twice a yearEvery home
4. This month
   Look over the roof, flashing and gutters from the ground with binoculars.

   Missing or lifted shingles, cracked boots around vent pipes and loose flashing are cheap fixes before they leak.

   How

   Walk the whole perimeter. Note anything lifted, missing or rusted and photograph it. Stay off the roof.

   Twice a yearEvery home
5. This month
   Book the AC or heat-pump tune-up before summer.

   Spring service slots are easier to get than the first hot week, when everyone calls at once.

   How

   Replace the filter first and clear leaves from the outdoor unit.

   YearlyBecause of a system you told us aboutENERGY STAR: HVAC maintenance checklist
6. This month
   After the thaw, check the basement and foundation for new leaks or cracks.

   Freeze-thaw and snowmelt push water against foundations.

   How

   Look for damp spots, efflorescence (white powder) and new cracks; mark the ends of cracks with a pencil and date to see if they grow.

   YearlyMixed-humid climate region
7. This month
   After the last freeze (~Apr 6): reopen outdoor faucets and check for leaks inside the wall.

   A pipe that split over winter often leaks only once the faucet is turned on, inside the wall or basement.

   How

   Open the indoor valve, run the outside faucet for a minute, then check the wall behind it and the basement ceiling for drips.

   After the last freezeTypical last freeze ~Apr 6 (NOAA 1991–2020, 50% date)
8. Watch
   Clean the dishwasher filter.

   Most current dishwashers have a manual filter; when it clogs, dishes come out dirty and the drain pump strains.

   How

   Twist out the filter at the bottom of the tub, rinse it under the tap and scrub gently with a soft brush.

   Every 3 monthsEvery home
9. Watch
   Repair window screens and check window seals before bug season.

   Torn screens let pests in when you open windows, and failed seals fog double-pane glass.

   How

   Patch small holes; re-spline larger tears. Note fogged panes for replacement quotes.

   YearlyMixed-humid climate region