If your HVAC system just isn't cutting it anymore and something is wrong that you can't figure out on your own, it is time to bring in a professional to assist you with the issue. When it comes to hiring an HVAC service to repair your unit, you want to make sure you hire the right contractor. Below are five traits you should look for in an HVAC contractor.

Trait #1: Certified HVAC Contractor

Most states have certification programs that contractors have to go through in order to get an HVAC repair license. You want to work with a contractor who has a certified license to perform HVAC repairs in your state.

Your state may have an HVAC license, or they may require HVAC contractors to hold plumbing, electrical, or gas licenses.

Trait #2: NATE Certification

NATE, or National American Technician Excellence, is a national non-profit organization that provides certifications for HVAC technicians who meet their learning requirements and pass their tests.

A NATE certification is the closest thing to a national certification that you can find. It is a way to stand out and to show that one has the education and training to meet not just local standards but state standards as well.

Trait #3: Licensed and Insured

Third, you want to work with an HVAC company that holds a state license in order to legally operate. This is different than the license that an individual will hold. This is a license that allows one to run a construction or contractor business in your state.

In addition, you only want to work with an HVAC company that is carrying the right insurance. They need to have workers' compensation insurance and general liability insurance. This type of insurance protects you, so you shouldn't work with a company that doesn't carry full insurance.

Trait #4: Brand Experience

There is a lot of variety on what needs to be done to fix an HVAC unit, depending upon the brand. Look for an HVAC company that is either certified or authorized to work on the brand of system that you have.

Most manufacturers run certification and authorization programs that educate HVAC professionals on the intricacies of working with their system. See if your HVAC manufacturer offers this type of program, and find local technicians who have completed this program. 

Trait #5: Good Reviews

Reviews can be a mixed bag, as many people are more eager to complain about poor work than to praise good work. However, it is always smart to look at the reviews. Is there a balance between positive and negative reviews?

If you can't figure out what is wrong with your HVAC unit, it is time to bring in a professional. You are going to want to hire a state- and NATE-certified contractor who is licensed and insured, comes with great customer reviews and has experience working on your brand of an HVAC system. An HVAC contractor with all of those traits should do a great job taking care of your HVAC system.

To learn more, visit a website like http://www.coeheatcool.com.​