Tips on Where to Place the Indoor Component of a Split System Air Conditioner

A multi-split system air conditioner has an indoor unit in each room you want to cool. This connects to the outdoor unit in the garden. You may wonder what the best placement is for the inside component of the system. While your installer can give advice, here are some tips to offer insight.

Central Position

The indoor unit blows cool, refreshing air into the room. So you should place it centrally to reach the entire area. If you put the unit at one end of a large room, then spots near the unit may be cold while other places remain warm. You also need to allow for space around the sides and top of the air conditioner so it can function correctly without obstructions.

Distance to Outdoor Unit

Another relevant factor in deciding an air conditioner's placement is the distance between the indoor and outdoor components. A multi-split system has pipes filled with refrigerant that connect both units. The refrigerant runs in a closed loop between the two, and in the process, it cools your home. If the inside and outside units are close, they don't need overly long pipes to connect them, which adds to installation costs. Additionally, shorter pipes can help the system run more efficiently as the cold refrigerant doesn't have as much chance to lose its coolness.


The indoor placement of an air conditioner is also related to your lifestyle and how you live in a particular room. For example, your house may have a large open living space, but you spend a lot of time relaxing on a sofa or sitting at a dining table at one end. In that case, it might be better to place the air conditioner closer to where you hang out the most rather than situate it centrally.

In a bedroom, it's best not to place the air conditioner so that cold air blows directly at anyone sleeping. This can be draughty and cause a sore throat. Put the air conditioning unit to the side and behind the bed to focus it on cooling the room rather than the occupants.

Wall Height

A final aspect of home air conditioning to consider is the wall height of the installation. Cool air naturally drops while hot air rises. Thus, if you want a room to be evenly cooled, it's best to put the air conditioner higher on the wall. As the expressed cool air sinks, it will be displaced by warm air that gets suctioned into the unit. This air will be cooled and blown out again. Thus, the entire room gets refreshed. However, if you install the air conditioner low on the wall, the cool air it creates will pool around the floor area and not displace the hot air near the ceiling. 

For more info about home air conditioning, contact a local company. 

About Me

Helpful and Hopeful HVAC Tips

Hello and welcome to my blog. My name is Leo. As a small-business owner and a dad who likes to help reduce the family's expenses as much as possible, I've done a fair bit of tinkering with my HVAC system, both at home and work. I've learnt a lot, including when to call in the pros. Want to get helpful, hopeful, actionable tips for dealing with your HVAC system? Then, this blog is the place. My two daughters both recently graduated uni and are living on their own, and I've transitioned to part-time at work, leaving me a lot of extra time to do things like write. I hope you like the posts.

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