What to Look for in an HVAC Contractor IdealAir Expert | April 20, 2014 | HVAC Contractors | No Comments Here are a few tips on what to look for when considering an HVAC contractor, whether you’re a business or a homeowner. Is the company licensed in your area and able to provide license number upon request? Do they carry insurance for general liability and worker’s comp? How many years have they been in business? How many service techs and installers do they have? Do they have 24-hour service department? (you may want to try their after-hours number to see if you receive a response.) Could they provide a list of customer references that had equipment installed recently? Does the company have technicians that are NATE certified or have technical diploma? What is the average number of years of service for the employees? Does the company perform background checks and drug testing on all employees?