when did gas furnaces become popular
Gas furnaces first became popular in the early 20th century, around the 1920s and 1930s, when natural gas began to be widely distributed through pipelines in many urban areas of the United States. Before this, homes were often heated with coal or wood-burning stoves, which could be messy, labor-intensive, and pose a fire hazard. The availability of natural gas made it easier and more convenient for homeowners to heat their homes with gas furnaces, which were more efficient and reliable than earlier heating systems. Since then, gas furnaces have continued to evolve and improve, and they remain a popular choice for home heating in many parts of the world.