How often should you service your air conditioner?

A well-maintained air conditioner cools better, uses less electricity, and lasts years longer. The short answer to how often you should service it: professionally once a year — and twice if the unit also heats your home in winter.

The annual rhythm that works in our climate

In North Macedonia most homes run their AC hard from June to September, and many use the same unit for heating in the shoulder seasons. The practical schedule is a professional service in spring, before the cooling season starts, so the unit enters summer with clean filters, a clean heat exchanger, and correct refrigerant pressure.

If you heat with the AC through winter, add an autumn check — heating mode stresses the outdoor unit in cold weather, and a pre-winter inspection catches problems while they are still cheap.

What you can do yourself vs. what a technician does

The dust filters behind the front panel are yours: rinse them every two to four weeks during heavy use. That alone protects airflow and efficiency.

A professional service goes deeper: cleaning the evaporator coil and fan, flushing the condensate drain, checking refrigerant pressure and electrical connections, and test-running the unit. Those are the parts where mold, buildup, and slow failures actually develop.

Signs your AC needs servicing now

Do not wait for the annual visit if you notice weaker cooling than last summer, an unpleasant smell when the unit starts, water dripping from the indoor unit, ice on the pipes, or a jump in your electricity bill. Each of these is an early symptom that servicing usually resolves — and ignoring them turns maintenance into repair.