July home maintenance checklist
Updated August 2026
July is an AC-watch month: nine tasks, and most exist to keep the cooling system alive through the two weeks you cannot live without it. The rule people ignore is the one that matters most here: if the coil ices over, shut the cooling off instead of pushing through the afternoon.
| Task | Interval | Effort |
|---|---|---|
| Change the AC filter and check the coil for ice | Monthly in peak | 10 min · DIY |
| Flush the condensate drain line | Every 1–3 months in season | 15 min · DIY |
| Check attic temperature and vent airflow on a hot day | Yearly | 15 min · DIY |
| Task | Interval | Effort |
|---|---|---|
| Test refrigerator door seals with a dollar bill | Yearly | 5 min · DIY |
| Degrease the range hood filter | Every 1–3 months | 20 min · DIY |
| Run the basement dehumidifier at 30–50% RH | Daily in summer | $200–350 unit |
| Task | Interval | Effort |
|---|---|---|
| Keep grass clippings and mulch off the condenser | After each mow | 5 min · DIY |
| Soak the soil at the foundation during drought | Weekly in drought | 30 min · DIY |
| Check deck boards and railings for sun damage | Yearly | 15 min · DIY |
Why these tasks in July
Runtime wears equipment out, not the calendar, and July delivers more runtime than any other month. A filter that lasts 90 days in April can be loaded in 30 now, and a starved coil freezes into a block of ice that stops cooling entirely and can send liquid refrigerant back to the compressor. Drain lines clog for the same reason: constant condensation grows algae in the pan, and the overflow finds a ceiling. Outside, drought does quiet work on the soil around the foundation, and a gap of an inch or two between soil and footing is the start of a settlement crack that costs $5,000–15,000 to correct later. Nine tasks, roughly two hours total, and the ones that count run on the equipment rather than the yard.
This whole checklist ships as reminders in OnOtto: every task above, on the right schedule for your home, snooze-proof.
Load this checklist as remindersFrequently asked questions
My AC coil is frozen. What should I do?
Switch the thermostat from cool to off and set the fan to on. Room air moving across the coil thaws it in one to three hours; a hair dryer or a screwdriver will damage fins and tubing. While it thaws, change the filter and open every closed register, since starved airflow causes most freeze-ups. If it ices again within a day, stop running it and call someone: that pattern points to low refrigerant, and a leak repair with a recharge runs $200–1,500 depending on where the leak sits.
Why is my AC running constantly in July?
Near-continuous operation on a 95°F afternoon is normal. Systems are sized for a design temperature around 90–95°F, and above that they simply cannot cycle off. Worry when the house keeps getting warmer while the unit runs, or when supply air is less than 15°F cooler than the return. Before calling anyone, replace the filter, rinse the condenser fins, and close the blinds on west-facing windows, which cuts the late-afternoon load noticeably.
Should I water my foundation during a drought?
In clay soils, yes. Expansive clay shrinks as it dries and pulls away from the footing, which lets one corner of the house settle and opens cracks in drywall and brick. Lay a soaker hose 12–18 inches out from the foundation and run it 20–30 minutes two or three times a week, aiming for steadily damp rather than soaked. It is unglamorous insurance against foundation repairs that start near $5,000 and climb past $15,000 once piers are involved.
What humidity should a basement hold in summer?
Between 30% and 50%. Above 60%, mold grows on joists, cardboard, and the back of drywall, and dust mites thrive. A 50-pint dehumidifier costs $200–350 and should drain to a floor drain or a condensate pump so nobody has to empty a bucket. Keep basement windows shut while it runs, since humid outdoor air is the source you are fighting, and rinse the intake filter monthly through the season.