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.
How long does it take before a permit is issued? Simple projects, such as A/C change outs, electrical and plumbing usually can be checked immediately when you bring your plans into City Hall, and you can get your permit before you leave. Simple projects can be checked within 5 working days. More complex projects will take 15 to 30 working days.