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.
Source(s): 40 years licensed master hvac tech, licensed master electrician, certified oil and gas burneer tech.... I would say it would take about 4-5 hours max to do and @$30 an hour. You shouldn't pay no more than $200 if there is no major re-wiring or anything. I'm a handy man and have been one for 29 years.