Don’t know a lot about these furnaces

I have been hearing a great deal about natural gas furnaces every time I go to search for more information about heating, ventilation, plus A/C.

And I have to admit that I know almost nothing about natural gas heaters.

What exactly are natural gas heaters? I know they must run on natural gas. But are they portable furnaces or are they full on gas furnaces adore furnaces plus boilers? I do not know because I can not find any detailed information on natural gas furnaces when I search for more information about various heating, ventilation, plus A/C systems. I am reading that natural gas furnaces are energy savers much adore hot water boilers are. But I do not know if getting an natural gas heating system would be right for me. This is what I am trying to find out because our interest has been peaked after seeing that these natural gas furnaces entirely exist in the world. What I may need to do is contact the local heating, ventilation, plus A/C provider plus inquire about natural gas furnaces plus see what exactly they are plus how they operate. Most of all, I would adore to find out how much natural gas furnaces cost, then for all I know they could be as extravagant as a beachside house whole-new home air purifier, which in that case is way out of our price range plus I could never be able to buy unless they had a heating, ventilation, plus A/C payment proposal available to slowly pay it off over the next few years or so. But before I get to all that, I need to find out what a natural gas heating system is plus what it is all about!