San Diego, CA Ductless AC Maintenance

You should rinse or vacuum the filters every month or so—more often if you have pets or allergies. But cleaning filters doesn’t protect the internal components. Without proper maintenance once a year, dirt builds up on the coils and in the drain lines, which can lead to water damage, mold growth, or a full system shutdown.

Ideally, never. Refrigerant doesn’t get “used up” unless there’s a leak. But even a small drop in pressure means your mini split has to work harder, which strains the compressor and drives up your electric bill. If you skip annual checks, a hidden leak could burn out your system before you ever realize what’s wrong.

If your system runs nonstop, struggles to cool, or you notice ice buildup on the indoor unit, low refrigerant could be the cause. Letting it run that way wears down your compressor fast, and that’s a costly part to replace. Regular tune-ups help catch this early.

You can—but only if it’s clean, properly charged, and in good working order. These systems are built for steady operation, but if something’s off—like a clogged coil or low refrigerant—you’ll end up with higher bills and more wear and tear. Maintenance keeps your system ready to run safely and efficiently around the clock.