There is no reason why you should have to pay too much for air conditioning service unless it is a very special case. The average price for a one-time service that provides the level of service you need will be close to what you would spend if you took your own time and researched different companies. There are plenty of people who have to deal with seasonal changes in their homes, and are forced to go without air conditioning.
You can find out just how long the company has been in business. This will give you an idea of their ability to provide reliable service. It also gives you an idea of the type of service you will have when you need them. They will be able to tell you about the equipment they use, how the service works and of course the price.
You can find this type of service at a number of local community colleges as well. They will usually offer a short break and some free advice on ways to reduce energy costs. They will be able to talk you through the options and let you know how the costs are determined. You might even be able to get a reduction in the bill if you are willing to do the work yourself. It might even be possible to get the price lowered if you have a home that is older than 20 years old, as most of these companies will look for these criteria. If you take the time and research properly you should be able to find an air conditioning service in Mathews NC that meets your needs and budget.