Of course If the flue is sized properly
If your furnace is less then 50000btus then yes.
120
The purpose of the vent on the furnace is to ventilate flue gases out side of the house.
The purpose of the vent on the furnace is to ventilate flue gases out side of the house.
The purpose of the vent on the furnace is to ventilate flue gases out side of the house.
There is no difference. They both refer to the product that leaves a furnace post combustion
The typical flue gas temp at the inlet to the air heater is about 650-750 DegF range.
a direct vent water heater is more fuel efficient (cost's less to operate). aside from that there isn't much difference, aside from not needing a double wall flue through the roof on a standard gas water heater.
If both fireplace and furnace are BOTH gas, if the flue has the correct size, AND if your building code permits, yes. If furnace and fireplace are different fuels, no. Check with your local building inspection department.
There should be no more than six inches between CPVC pipe and the exhaust flue on a water heater. If the CPVC pipe is installed too close it can be a safety issue.
I am considering buying a gas water heater. How does a gas water heater work?
No, you only need gas for a gas water heater.