CHAPTER III
THE HOT-AIR FURNACE 51
Construction--Furnace-gas Leaks--Location of the Furnace--Flues--Combination Hot-air and Hot-water Heater.
THE HOT-AIR FURNACE 51
Construction--Furnace-gas Leaks--Location of the Furnace--Flues--Combination Hot-air and Hot-water Heater.