Your #1 concern when installing a new HVAC system
Hiring the best heating and air conditioning company should be your #1 concern when installing a new HVAC system. It will do you no good to spend thousands of dollars on a new heating and cooling system if it is not installed correctly. You will have nothing but constant problems if the job is not done properly the first time around. This is why it is very important to research the HVAC contractors that work for the company you are thinking of hiring.
Every heating and air conditioning company will have certified contractors. But there are different certifications that are available to all AC contractors. The best thing to do is when you contact the HVAC company is to ask them what certifications do they require there workers to have. Go and research the list that they provide you and make your decision based off of the results you find.