Author Question: CO2 is an inert gas. Indicate whether the statement is true or ... (Read 45 times)

kfurse · **on:** Jul 26, 2018

CO2 is an inert gas.

Indicate whether the statement is true or false

Question 2

Why are the 90 percent condensing furnaces unique?

A) The flue-gas affects the venting material at a greater than normal rate.
B) The venting of this type of furnace is made of PVC and is easy to seal airtight.
C) The flue-gas is excessively hot and can cause fires if improperly used.
D) The venting material is rare, as it is no longer manufactured due to defects.