If there is a actually outdated brownstone factory or ware cabin in your town, it’s almost a guarantee that its heated by a cast iron boiler, but these outdated Heating and Air Conditioning units were the tied and tploy usual for nearly a century, but the time has come to put them into retirement, while boilers are awesome, not all boilers are created equal. Cast iron boilers tend to still be found in these older buildings because guess it or not, they still work. But just because they’re still running doesn’t mean they’re running well, however much like the outdated golden Toyota Corolla that you’ll often see on the road from 1996 with over several hundred thoUSAnd miles on it, barely working is absolutely weird from working beautifully. The problem with cast iron is they’re made from a absolutely brittle material, which means it sustains damage instead of flexing and moving with temperature changes. This is how outdated cast iron boilers often get cracks that cause problems with the overall effectiveness of their heating system, then even though a cast iron boiler can last up to 60 years or more, in that time it will not at all be running and the day it was first installed. That’s why steel boilers are so popular today! Steel flexes, unlike cast iron, so it doesn’t crack under pressure. They also have a much higher SEER rating and are more effective at stopping heat loss. Certain models of steel boilers have even been told to last at least 35 years, if not more, but unlike its cast iron cousin, the steel boiler will run just as perfectly as the day your had it installed with respected professional heating and AC care.