Certification type

Definition

Which class of appliance a technician's federal refrigerant card lets them touch.

Why It Matters

The guide already says the refrigerant credential belongs to the person and not the company. What it does not say is that the card comes in grades, and the grade decides which work the crew may take. Type I covers small appliances, Type II the medium, high and very high pressure equipment, Type III the low pressure machines, and Universal all of them. A shop full of Type I cards cannot lawfully take the rooftop and chiller work its own profit and loss is built on. Two more things sit in the same rule and neither is on the shelf. An apprentice may work under a certified technician who is closely and continually supervising and who shares the responsibility, which is the staffing lever a growing shop actually pulls. And a distributor may only sell refrigerant to a company that can show it employs a certified technician, keeping that proof and the invoices for three years, so a supply relationship is a document a buyer can ask to see.