Here are the winners of this month's question. OJMOLLERE@xxxxxxx gshelnut@xxxxxxxx tgaudet@xxxxxxxxxx The question was.. True or false: The term "make up air" refers to the level of oxygen in a hospital surger room. False; The term "make up air" refers to air that replaces the air that a gas appliance or exhaust fan removes from the building. Air is required for combustion and that combustion air goes up the chimney and out of the house. Similarly, exhaust fans remove air from the house. In older homes this lost air was replaced by infiltration, that is air leaking into the house through nooks and crannies. In newer buildings, construction is tighter and there is often a dedicated source for make up air. If you have tightened up an older home, make sure there is an adequate supply of air for combustion appliances. A gas appliance starved for air operates inefficiently -- and sometimes dangerously. Until next month, if anyone has any questions dealing with *ANY* repair around the house or home send your questions to the list! Ken (list owner) PS. I will try to have a more interesting and harder question next month. ******************************************************************** To unsubscribe send 'unsubscribe homeclinic'in subject line to listar@xxxxxxxxxxxxx View the Archives at //freelists.org/archives/homeclinic ********************************************************************