What heating & air does the home have? CONFUSED please help

[Jose Castillo]

Ok so this is where I get a bit lost when talking with sellers: It's like I suddenly get lost when they start telling me about what kind of heating and air they have. I guess I have some of these components confused as to whats what, how do they work, and what questions I should ask. Any advice for my situation would be great! What should I be on the look out for when it comes to HVAC questions?