No formal training, although there are some courses you can take. If you are interested in this area I would suggest work with a contractor as an apprentice. In this way you can learn the business and what works and what doesn't.
In order to become a contractor, education and training are needed. A degree or certification in HVAC is necessary, along with experience in working with these types of units.
training
some
fudgeicals!
chemistry
It depends where you are
biology and chemistry
Institutional training and Education
you need some hair cutting skills
You need a bachelor's degree
yes because this will help you later on in your job and life
Becoming a contractor requires at least a four year degree, and vast understanding of blueprints. You would also need to have some good experience as an architect as well.