Don’t know much about these kinds of systems

I have been hearing about new furnaces each time I go to search for more information about heating and air conditioning.

And I have to say that I know next to nothing about oil heaters.

What exactly are oil heaters anyway? I know that they must run on oil. But are they portable oil oil furnaces or are they full on oil furnaces such as gas furnaces and water boilers? I do not know because I can find very little detailed information on oil oil oil furnaces when I search for additional information about heating and cooling systems. I am reading that oil oil oil furnaces are energy saving devices much love tepid water boilers are. But I do not know if getting an oil gas furnace would be great for me. This is what I am trying to find out because my interest is peaked after seeing that the oil furnaces legitimately exist in the world. What I may need to do is contact my local heating and air conditioning team and inquire about oil oil oil furnaces and see what exactly they are and how they operate. First of all, I would love to find out how much oil oil oil furnaces cost… For all that I know they could be as overpriced as a whole house media air cleaner, which in that case is too far outside of my price range and I would never be able to buy unless they had a gradual heating and air conditioning payment plan available to pay it off over the next 5 years or so. But before I get to all that, I need to find out what an oil or a gas furnace is and what it is all about!

gas heater