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.
Primary election, in the United States, an election to select candidates to run for public office. Primaries may be closed (partisan), allowing only declared party members to vote, or open (nonpartisan), enabling all voters to choose which partyâs primary they wish to vote in without declaring any party affiliation.