What genre of fuel is best?

Dad told myself and others that nearly every genre of fuel can cause carbon monoxide, so I was back to worrying again.

Knowing I had to get a new gas furnace for my home, I kept trying to figure out what genre I wanted. I knew that I wanted something that was going to be energy efficient in fuel consumption and in heating. My question was; what genre of fuel would be to obtain this goal? The topic of fossil fuel was coming up all the time right now. Oil was the most obvious fossil fuel, but what about gas or coal. Coal was supposed to be a pollutant. Living in a coal region, every one of us were always being told that coal is the cleanest burning genre of fuel you could use. I was brought up with a coal oil furnace for heating. The heat was always comfortable in our home. Dad had a self-feeding oil furnace and she only had to fill the coal hopper once a afternoon. People complained because they needed a room to store the coal, but you also need a storage bag for oil and gas. Gas is the next big thing when it comes to heating. My complication with gas is that 1 of its big by-products is carbon monoxide. Carbon monoxide is a deadly gas that is tasteless, odorless, and white, and you don’t even feel you are being killed by it. Dad told myself and others that nearly every genre of fuel can cause carbon monoxide, so I was back to worrying again. Oil is supposedly the worst of the pollutants, but it is also 1 of the safest to use. I started thinking about electricity. I feel that multiple people don’t want to use electricity for heating, because there are multiple variants that can knock out electricity. I just can’t make a decision on a source of heating.

air conditioner