I can’t decide if I should get our gas furnace repaired or just do an substitute

I can’t decide if I should get our gas furnace repaired or not! At this point, I don’t think if it makes more sense for me to do a gas furnace repair or pay for a complete substitute.

The old oil gas furnace that’s currently installed in our house has been here for over twenty years now. Over the past various years since I’ve been residing here, I’ve had to shell out lots of currency on gas furnace repairs, and most of the gas furnace repairs weren’t proper problems that you get with normal wear plus tear on a heating unit; No, most of our gas furnace repairs were caused by random things that just cost me a lot of currency. Once, I had a family of racoons that built a nest inside our gas furnace. It was the craziest thing I had ever seen. The racoons had moved in while in the summer time plus so I didn’t even think that they were there until I tried to turn the gas furnace on when the weather started cooling off in the fall. Of course, they had filled the casing on the gas furnace with fur, trash, dirt plus debris for their nest plus the gas furnace wouldn’t even turn on. I had to pay for the Heating plus A/C supplier to come out plus repair the injure to the gas furnace then. Then a few months later, our son hit a baseball into the basement window. The window broke plus glass fell down into the gas furnace machine plus cut some of the wires. Of course, I had to call plus make another appointment for heating repair. I have such random things that happen to that old oil gas furnace. I wonder if I should just get rid of it plus substitute the entire gas furnace.
Air conditioning repair