The best way to find a reliable ac service contractor is to ask anyone and everyone you know for recommendations. People that have used someone’s services before are more likely to recommend them because they would want the same treatment if the opportunity arose. These referrals will also give you an idea of how well their job was done if they were willing to follow up and the company’s overall professionalism.

Locate an AC Technician Who Offers Solid Warranties.
When you hire a reliable ac service contractor for your cooling and heating needs, be sure to ask about their warranty policy. Anyone who offers at least a one-year warranty on parts and labour is usually considered reliable and responsible. Anyone that provides longer warranties (up to two years) are even more likely to be reliable.
Contact the AC company’s previous customers.
Anyone that tells you that they’ve used an ac service contractor before is more than willing to share their experiences and opinions, but it might be helpful to contact a few of them personally and ask for their input as well. This will give you a better idea of how well they did if they were willing to follow up and the company’s overall professionalism.
AC companies with past satisfied customers are more likely to have happy current customers as well. This can give you a good idea of whether or not it is worth your time, effort, and money.