VENTILATING THE HOME 



2 7 



If properly installed, the hot-water system is probably 

 the best. To provide for change of air, coils of pipe are 

 placed in the basement. Fresh air is led from outdoors over 

 these pipes, where it is heated. It can then be distributed 

 to the rooms above by means of hot-air pipes, in a manner 

 similar to that used with the hot-air furnace. This is su- 

 perior to the hot-air furnace for two reasons : first, because 

 the air does not become so intensely heated and dried, and 

 second, because the temperature can 

 more easily be controlled and kept 

 down in the mild weather of late fall 

 and early spring. It also has this sec- 

 ond advantage over the steam system. 

 Ventilation may also be secured by 

 bringing the air directly from outdoors 

 and allowing it to pass over a radiator. 

 (See figure 6.) As ordinarily installed 

 the hot-air furnace is the best from 

 the standpoint of health, provided that 

 air is taken from outdoors. 



The open fireplace provides good 

 ventilation, as air passes up the chim- 

 ney and fresh air is drawn in from around the windows and 

 doors. The stove provides ventilation in the same way. 



Oil stoves and gas stoves are both unhealthful, as they 

 draw the supply of oxygen from the air and give off all their 

 waste products into the same room. As there is no provision 

 for removing it, the air soon becomes filled with these 

 products, some of which have a disagreeable odor. 



HOME PEOJECT 2 



Purpose. To learn if your home is properly ventilated. 



Directions, i. Is the air kept in motion? Light a piece 

 of punk, or cloth, or a joss stick and hold it in various parts of 

 the room and at different heights from the floor' and notice the 



FIG. 6. Ventilation at 

 the radiator. 



