If you have a split system in your home, it's important to ensure that it remains in good condition, so that you can maintain a comfortable temperature in your house at all times. Here are two ways to do this.

Don't allow the external unit to become blocked

Split systems are made up of two units. One of these units is located indoors and the other is usually fitted onto an exterior wall.

The external unit contains the system's condenser coils and the compressor. It is this unit that allows the warm air to be removed from the inside of the house.

It is absolutely crucial to make sure that the area around the external unit remains free from obstructions. There are a couple of reasons why you must do this.

Firstly, if you allow weeds to grow in this area, or if you leave garden furniture directly in front of the unit, the flow of warm air that is supposed to be released via the unit's vents will remain inside the unit. This could lead to it overheating, which could warp the components housed inside it and cause the entire system to malfunction.

Secondly, if you feel that the unit is a bit of an eyesore and so deliberately choose to hide it by planting a hedge or collection of shrubs in front of it, your HVAC specialist will not be able to service the unit or repair any damaged components, as the plants will be in their way.

Listen out for new noises

It's important to pay attention to the sounds your split system makes and to have a HVAC contractor inspect the system if you notice any changes, as new noises are often an indication that a fault has developed.

For example, if you can hear a rattling sound every time your system is switched on, there could be a piece of debris stuck inside the external unit. This issue can arise after you mow the lawn next to the unit, as when you do this, small stones, twigs and leaves that were lying on the grass can become airborne and fly in through the gaps in the unit's vents.

In this situation, you might be able to resolve the issue by unscrewing the unit's cover and physically pulling out the debris.

Similarly, if your system has suddenly started to produce a hissing noise when you switch it on, there could be a leak in the coils that transport the refrigerant fluid around the system. This is quite a serious problem which will affect the system's ability to deliver cool air into your home and as such, needs to be repaired promptly by a HVAC specialist.