1 The way your foot is shaped puts too much pressure on your big toe joint. Because bunions can run in families, some experts believe that the inherited shape of the foot makes some people more likely to get them.  Your foot rolls inward too much when you walk. A moderate amount of inward roll, or pronation, is normal.
Step 3: Route 2: Earn a Certificate or Degree. Enroll in an HVAC certificate or associate's degree program at a community college, trade school or technical academy. The programs can take between six months and two years to complete.
What are the types of certification do HVAC technicians need? HVAC technicians handling or opening a container with controlled refrigerant are required by the Environmental Protection Agency to obtain the EPA Section 608 certification. The EPA Section 608 consists of four types of HVAC Technician certifications.