Why can oil furnaces operate at higher efficiencies than gas ...

[Marty]

Why can oil furnaces operate at higher efficiencies than gas furnaces without condensing water in the heat exchanger or vent?
 
  A) Oil furnace heat exchangers are inherently more efficient.
  B) Oil furnaces burn hotter.
  C) The flue gas contains only half as much water as flue gas from a gas furnace.
  D) Unlike gas, no water is mixed with the oil during the combustion process.

Question 2

When a geothermal heat pump system uses antifreeze in the loop, how is antifreeze added to the loop?
 
  A) By pumping the antifreeze in under pressure
  B) By pouring the antifreeze in the loop after it is connected
  C) By temporarily connecting a purge unit
  D) By pouring the antifreeze in the loop before it is connected

[welcom1000]

Answer to Question 1

C

Answer to Question 2

C

[Marty]

Thanks

[welcom1000]

Welcome