90% Furnace venting. Posted on August 22, 2012 by Andy. With these higher efficiency furnaces, came some other considerations. The 90% implies that 90% of the heat that is put into the furnace is transferred into the duct system and subsequently into the homes living space leaving only 10% going out the exhaust.
The definition of a direct primary election is when people vote for candidates of their political party by direct vote instead of by delegates at a convention.
Primaries may be direct or indirect. A direct primary, which is now used in some form in all U.S. states, functions as a preliminary election whereby voters decide their partyâs candidates. In an indirect primary, voters elect delegates who choose the partyâs candidates at a nominating convention.