If you have a natural gas water heater, then you may be considering using a power vent to get rid of toxic fumes. Like all types of gas water heaters, you will need to properly vent your heater in order to ensure that you don't get a build-up of toxic gases inside your home. Installing a power vent can be one way to achieve this.
Better Air Flow
An older water heater may have a connection to the outside of the house, which is enough to pull out gases. However, you may find that adding a power vent gives you a better range of air flow. It is also a good idea to power vent instead of allowing the gases to escape naturally. For example, an increase in wind, could get a backdraft and will blow gases back into your home. Power venting will stop this from happening.
A power vent runs on a small amount of electricity and uses a fan to drive gases up the exhaust pipe. You can consider using a solar power system, if you are worried about your carbon footprint.