Learning about air conditioning

I’m going to go down to the Heating and A/C dealer today to ask them which filter is the best for our air conditioner.

I would like to have one that keeps all the dust from getting into the HVAC duct so it doesn’t need to be cleaned so often.

I am having a problem with dust and would enjoy solving the problem once and for all. I think a HEPA filter would be the best kind but I certainly think nothing about A/C because I have lived overseas for most of my life and we didn’t even have an air conditioner in our flat. We didn’t need it because the weather was actually mild where I lived and would only get cold in the winter time however not hot in the summer. So now all of this air conditioner stuff is new to me and I would like to learn more about it so I can take care of my Heating and A/C system. I would enjoy hiring a supplier to do the job for me but I would also like thinking about what needs to be done on a regular basis. I think I’m kind of lost in this space and I would like a class or a seminar for dummies like me. Maybe I can find some information online about heating and cooling but I really don’t know what I am trying to find out, it’s just so new to me. I think my nice neighbor may be able to help me if he has the time as he seems to always be at work.

furnace/heater repair