If you do not vent a natural gas water heater, anytime of the year, CO and CO2 will build up in your home. Anytime you are burning anything indoors you will need to vent the product. The only exception are 'ventless' heaters/fireplaces/ect. If you use a ventless system make sure you spend money on a CO and CO2 monitor. (Not a bad idea anyway when burning anything indoors.)
I think that is what you are asking?
Depends on what type of vent system water heater has.
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.
A geyser is a natural vent that discharges steam or water from Earth.
yes there are direct vent gas water heater available Absolutely NOT
B-vent pipe.
yes it can
Yes, you can
When you cannot use B vent to find a way to vent the HWT through to the roof!
No it can not.="h2headingh2"style="color:rgb(0,0,0);"name="hell_no">
By following the NFPA 54 guide lines or the AGA or GAMA
The difference between a mobile gas water heater and a standard gas water heater is that a MH unit will use an outside air intake for combustion. That is the most important difference.
A geyser is a natural vent that discharges steam or water from Earth.