The 1850s saw many improvements and expansions to the mansion's existing conveniences. By this time many Americans who had gaslight wondered how they had ever lived without it. President Zachary Taylor ordered an enlargement of the gas system into the White House's offices, family quarters, and basement. Millard Fillmore determined that the house should be comfortable in any season and had the heating system improved. The White House of Franklin Pierce came to represent the best domestic technology of its time (1853). The heating plant was modified again with the addition of a hot-water furnace that was more efficient and healthful because the air was warmed directly by coils rather than "cooked" from outside the air chamber. Pierce also made significant improvements to the plumbing and toilet facilities, including the installation of a bathroom on the second floor with the first permanent bathing facilities. The new bathroom was luxurious in having both hot and cold water piped in. Before 1853 bathing on the second floor required portable bathtubs, and kettles of hot water had to be hauled up from the existing east wing bathing room.