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Mini Split Air Conditioner Buying Guide

The secret of ductless mini-split systems success is efficient cooling in one or multiple areas. Since each indoor unit works independently, they provide greater temperature control and can be set to different temperatures—allowing you to cool certain parts of your home without cooling the entire space. This zone cooling helps decrease energy usage.

Components of Mini-Split ACs

There are 4 components which make ductless systems:

  • Condensing Unit
  • Refrigerant Lines
  • Indoor Unit or Units
  • Remote Control or Wall Monitor

The Advantages

Mini-splits have distinct benefits over other room air conditioners:

  • They are quiet (the only indoor noise is from the unit's fan, making them quieter than window or thru-wall ACs).
  • Zone Cooling (and Heating if included): Zone cooling lets you cool one room or area of your home at a time
  • No ducts for real: there is no need to worry about dirty ducts spreading allergens or other particles around your home. The reason is that they don’t use ductwork. Approximately all ducted systems lose some percentage of performance and efficiency according to leaks, cracks, or disconnections—no ductwork means no loss of performance.
  • Windows Not Required: A lot of room air conditioners require a window for venting and installation. To compare with a portable ACs and window models, for installing mini-splits no window is required.

Size and Power

Each indoor ductless unit offers a set number of BTUs of cooling power. For single-zone units, you just need to know the number of BTUs associated with the indoor unit and make sure it fits the square footage you're cooling.

Installation

Since you run the refrigerant lines indoors from outside your home through a small hole in your wall, installing mini split ACs require professional installation. You'll need to contact an HVAC professional to be sure your AC is installed to run as effectively and efficiently as possible.

Indoor Unit Location Options

While other models are hung from the ceiling, a majority of the indoor air conditioning units are hung on a wall using included brackets. Be undoubted that your refrigerant lines will reach each indoor hanging unit before you install them. Check where your indoor units can be installed and then - purchase a mini split AC.

Additional Modes

Typically, mini splits can include multiple modes to keep your home full of crisp, cool air in the summer and warm air in the winter. If you don’t have central air conditioners and use their mini-split AC as their primary cooling option, additional modes can be useful for you.

Watch carefully for these modes for year-round comfort:

  • Heat
  • Dehumidify
  • Fan-Only: Use Fan mode to distribute and circulate air around your space without using Cool mode.
  • Automatic
  • Sleep: while you rest, the Sleep function maintains a pleasant room temperature with quiet operation.

Features

Mini split ACs come with different convenient features, such as:

  • Programmable Timer: Program your mini-split to turn on or off up to 24 hours in advance. For example, set it to turn on right before you get home from work—you'll walk into a cool home without running your AC all day.
  • Adjustable Airflow: there are some models, in which you can adjust airflow on the remote. With others you manually move louvers to direct cool or warm air throughout your space. Also you can look for louvers that swing mechanically to direct airflow up and down.
  • Washable Air Filter: An air filter catches unpleasant allergens and particles before they enter your home. Pay attention to one that can be washed and replaced to save on replacement filters.
  • Automatic Restart: in case you faced with a power failure, mini-splits automatically resume operation in the last programmed setting once power is restored. Such function not only protects the compressor, but it also prevents circuit breaker damage.