There are several tell-tale signs show that your air conditioner service is overdue. Common signs are when you notice that the unit no longer performs as well as it used to, e.g. not cooling or heating as effectively, or air flow is restricted.
Another common sign would be unpleasant smells coming from the system. If any of these signs are apparent, then it is important to get your units serviced ASAP. During this time you are at the highest risk of the unit failing. It is our experience that the vast majority of expensive air conditioning repairs occur in systems which have not been subject to regular maintenance or servicing.
The installation of your air conditioning system is a major investment.
Naturally, you will want to protect your investment by both prolonging the life of your system and ensuring that the air conditioning units continue to run efficiently and economically.