Maintenance Schedule
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How often should an HVAC system be serviced?

A pre-season check catches a dirty coil, a weak blower or a refrigerant problem before the weather makes it urgent. Contractors are busiest at the first cold or hot spell, so book earlier.

Have an HVAC system serviced once a year, before the heating or cooling season.

Range: 12 months · checked 6 November 2026

12months

Typical interval

What changes it

  • A system that runs all year may be checked twice: cooling in spring, heating in autumn.
  • An older system, or one that is noisy or short-cycling, may need attention sooner.
  • Change the filter between services; the service is not a substitute for that.
  • Keep the outdoor unit clear of leaves, snow and debris.

Do it

  1. Book the service before the season starts.
  2. Ask for the filter, coils, refrigerant level and blower to be checked.
  3. Keep the report with the appliance documents.
  4. Put the next service date in the schedule now.

Put it in your schedule

The maker opens with HVAC Service at every 12 months.

The maker counts the next date from this day.

No account. The maker keeps the job in your browser and in the link.

Why this interval

The sources below give the full picture. The factors above are the ones that move the interval for most situations.

The range is a starting point, not a rule for every situation. The factors above are the ones the sources name; if your situation is different, use the range and ask a professional where the job needs one.

If you want the job in a schedule with reminders, open the schedule maker with this job already loaded. The how often index has the other jobs.

HVAC Service questions

What changes the interval?

A system that runs all year may be checked twice: cooling in spring, heating in autumn. An older system, or one that is noisy or short-cycling, may need attention sooner. Change the filter between services; the service is not a substitute for that. Keep the outdoor unit clear of leaves, snow and debris.

Does the app use this interval?

The app’s ready-made schedule uses every 12 months. You can change it on the job.

Where does this come from?

The answer is checked against one primary source, linked under Sources with the date each was read.

Sources

The interval and the factors on this page are checked against this source.

  1. Maintenance checklist. ENERGY STAR (US EPA and DOE).An annual professional HVAC service. Checked 6 November 2026.