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Modesto Heating & Cooling Calendar

A month-by-month heating and cooling checklist for Stanislaus County homes, written for long, very hot, dry summers, smoky skies and cool, foggy winters.

Print it, bookmark it or share it with new neighbors, all are welcome to link to this page.

Modesto Heating & Cooling Calendar — Modesto AC Experts · https://modestoacexperts.com/hvac-calendar

January

Foggy winter

0 of 3 done

Change the furnace filter.
Test carbon monoxide alarms.
Watch heat pump defrost on foggy mornings.
Why it matters
Steam is normal.

February

Late winter

0 of 3 done

Book a spring AC tune-up.
Why it matters
Before the rush.
Check the thermostat schedule.
Clear leaves from the outdoor unit.

March

Spring

0 of 3 done

Have the AC tuned up. See tune-ups.
Change filters.
Test cooling on a warm day.

April

Warming

0 of 3 done

Rinse cottonwood fluff off the outdoor coil.
Why it matters
Power off first.
Check upstairs rooms cool evenly.
Plan replacements before summer.

May

Heat building

0 of 3 done

Change filters monthly from now on.
Close blinds on hot afternoons.
Check the drain line outlet.

June

Hot

0 of 3 done

Pre-cool in the morning on hot days.
Keep plants clear of the outdoor unit.
Have a smoke plan ready.

July

Peak heat

0 of 3 done

Change the filter.
Know local cooling centres.
Listen for new noises from the outdoor unit.

August

Smoke season

0 of 3 done

Use a higher-efficiency filter on smoky days. See smoke guide.
Change filters more often during harvest dust.
Rinse the outdoor coil.

September

Still hot

0 of 3 done

Check filters after smoke events.
Plan fall replacements.
Note rooms that never cooled.

October

Cooling off

0 of 3 done

Book a furnace or heat pump check.
Change the filter.
Test carbon monoxide alarms.

November

Fog arrives

0 of 3 done

Test heat on the first cold morning.
Check vents aren't blocked by furniture.
Clear leaves from the outdoor unit.

December

Winter

0 of 3 done

Change the filter.
Keep the furnace area clear.
Watch for short cycling.

This calendar is general guidance. Turn the power off at the disconnect before cleaning around the outdoor unit; leave refrigerant, gas and electrical work to a licensed contractor.

Print it, bookmark it or share it with new neighbors, all are welcome to link to this page.

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