I have been a pretty big fan of boilers for heating my home ever since I was a little kid; When I was growing up in the far north, my parents lived with me in this outdated house that had a big boiler in the basement to supply warm water and heat for the whole house. When I was a kid, I still remember being scared of the boiler when I was young, especially since it would make these very loud gurgling sounds from time to time. But now that I’m older, I know that the weird gurgling sound was actually the boiler starting to “kettle.” Well, unfortunately, kettling is never a great thing for a boiler to do, as it means there’s a buildup of minerals or sludge inside the boiler that’s causing the water inside to get too hot. The boiler won’t explode, but however it will become disfigured internally over time. And then it will need to be upgraded. Last year, I thought my own boiler at my house was starting to kettle on me. I nearly started to cry out of desperation and panic when I heard that usual gurgling sound. I knew it would be terribly high-priced to buy a new heating system. Thankfully for me, though, my heating and A/C service dealer found out that the real trouble was with the thermostat for the boiler and not the boiler itself. I was relieved to think that the repair was going to be so much more affordable. Plus, I had a much shorter window of time for getting it repaired! I would’ve hated to go over a month without some kind of heating system in my house.