If you continue to heat and cool your property with a faulty or deteriorating air conditioning units you will be wasting energy and this in the long term will be costing a lot of euros, especially as electricity in Spain is already high.
Another perhaps more important reason is that the older units use coolants. These have now been “outlawed” and as the years go by the units require to be refilled with coolant more and more so it will cost you a lot just to get them refilled each time. If you have an air conditioning unit that is more than 10 years old it really would be more profitable to get a new one.
You really need to consider the expense of running the old units as well as the cost of repair as the operating expenses are quite considerable when you compare them to the new efficient machines. Incredibly an old machine can cost you 50% more just to run.
When replacing your central air conditioning unit you need to look for one with a good energy rating, we would suggest at least A. As on the Costa del Sol it is very humid you need to chose one that has good performance at high humidity and it must be energy star rated.
Not only is it important to choose the right energy efficient unit but it is critical that it is installed correctly. When installing the units it is essential to make sure that the ducts don’t have any hard bends, kinks or excessive lengths and also that there are no leakage in them. If they do they need to be sealed if they leak more than 8 percent of the air conditioner’s airflow.
Recent advances in air conditioning technology have greatly improved energy efficiency and upgrading to a better system is highly recommended if you unit is more than 10 years old.