A ductless mini split head on the wall of a living room
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Boost Services Heating and CoolingMini Splits

Mini split maintenance

Annual cleaning keeps a ductless head efficient and quiet.

A mini split head moves a lot of room air across a small, tightly packed coil. The filters catch what they can, and the rest builds up on the coil and in the drain pan. That build-up is behind most of the smells, drips and weak airflow people call about.

Some of the upkeep is yours: rinsing the filters takes a few minutes a month. The coil, the blower wheel, the drain pan and the refrigerant charge are a technician's job, roughly every one to two years for most homes.

Sound familiar?

Why people call us for mini split maintenance

  • Musty smell from the head
  • Reduced airflow
  • Bills creeping up
  • Warranty requires service
A wall-mounted mini split in a bedroom with wood panelling
What the visit includes

A full check, priced before we book

  1. Head and blower wheel cleaning
  2. Filter cleaning
  3. Drain line flush
  4. Refrigerant charge check
Schedule service
What to expect

How a mini split maintenance visit goes

Filters are washed and the indoor coil and blower wheel are cleaned, which is where smells and weak airflow start. The drain pan and the drain line are cleared and the slope to the outside is checked.

Outside, the coil is cleaned and the electrical connections, the capacitor and the refrigerant charge are checked against the manufacturer's numbers.

You hear what was found. If a part is drifting, you get a written price and you decide. A cleaning visit is not the $69 diagnostic; call and you will hear the price before you book.

Brands we service

We repair, maintain and install these brands. Logos identify the equipment we work on and do not imply endorsement by the manufacturer.

Good to know

Before you call

  • Monthly: rinse the filters

    They slide out from under the front cover. Rinse, let them dry fully and put them back. Monthly during the cooling season is the rhythm; a head that runs all day needs it more often. Read more

  • Every one to two years: the deep clean

    The indoor coil and blower wheel collect what the filters miss, and that build-up is where smells and weak airflow start. Sooner if you are near a freeway, have pets or just came through a smoke season. Read more

  • Keep the drain flowing

    The pan under the coil and the small hose to the outside are cleared on every visit, and the slope is checked. A blocked drain is the usual reason a head starts dripping. Read more

  • Outside: clear and clean

    Keep leaves and debris away from the outdoor unit and let the coil get cleaned on the visit. It sheds every bit of heat the heads pull out of the rooms, and a coated coil makes the whole system work harder.

  • A musty smell is the coil, not the filter

    Gray fuzz on the fins or the blower wheel is what smells on start-up, and a filter rinse does not reach it. That is the deep clean, and it is the reason the visit exists. Read more

FAQ

Common questions

Monthly during the cooling season. They slide out from under the front cover. Rinse, let them dry fully, and put them back.

★★★★★
“Amazing Professional And quick service the AC technician Jonathan arrived same day one hour after he called … He replaced the filters clean the Coils … Our AC never was Cold like this and the airflow is amazing”
Jonathan M. · Google · Read our reviews
Get in touch

Schedule service

Fill in the form or call. We are on the phones 6am–10pm.

818-277-5056

Licensed #1119892 · Veteran-owned · Pasadena & Reseda

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