When was first boiler made?

The first known boiler, often referred to as a "steam boiler," was developed in the early 18th century. One of the earliest examples is attributed to Thomas Savery, who patented a steam pump in 1698 that utilized boiling water to create steam. However, it was James Watt's improvements in the late 18th century that significantly advanced boiler design and efficiency, leading to widespread use in the Industrial Revolution.