They do make two models of power vent units one is called a direct vent power vent as bob harper pointed out it draws its combustion air from outside unlike a standard power vent unit which burns its combustion air from the dwelling.
Can you vent a hot water heater through the wall.
Be sure you understand what the restrictions are as far as vent placement.
Direct vent water boiler the direct vent water boiler is another type of water heater venting that you should know about.
Can you vent a gas hot water heater with pvc.
Hot water heaters and other fuel venting appliances must have vents sized according to code.
Yes you can vent a gas fired water heater out of the wall if it is either a power vent unit.
Water heaters and vents come in multiple forms including induced draft direct venting and conventional draft.
With a direct vent system air for combustion is drawn from a vent pipe that runs through an exterior wall or the roof.
This is potentially a good application for tankless esp if you are in a warm weather climate.
This vent also allows for off gasses to be unleashed outside too.
Direct vent water heaters.
Exhaust gases are vented outdoors through a separate vent duct or through a separate chamber of the same pipe this requires a double wall vent duct.
Photos go a long way.
Two specialized types of water heaters direct vent and mechanical vent also called power vent are exempted from this code requirement.
Decide if you are going tank or tankless.
Exceptions may be made for non combustible walls such as solid masonry.
Instead both systems typically expel exhaust through a pipe that runs outside through an exterior wall.
If tank your soaking tub will require a larger heater.
Single wall vent pipe cannot be used for water heaters located in attics and may not pass through attic spaces crawl spaces or any confined or inaccessible location.
Yes all water heaters required to be vented outdoors.
The vents go directly outside through the wall which pulls in the outside air for combustion.
The air that is used for combustion will come from the water vent this vent will either through the roof or from the outside of the wall.
Without knowing the water heater type vent type location and type of termination no one can give you a more definitive response.
This one vents out the side wall and it is perfectly fine.
Wednesday november 28 2018 most tank type gas water heaters are atmospheric vent type and they are required to vent vertically and above the roof of a home.
You can vent through the sidewall with the appropriate heater.