Features To Look For When Purchasing A Gas Water Heater

A gas water heater is an important investment that can provide hot water for your household needs. When selecting a gas water heater, it's important to consider several key features that will ensure its efficiency, safety, and durability. Here are some of the key features to look for when purchasing a gas water heater.

Size and Capacity

The first feature to consider when purchasing a gas water heater is the size and capacity of the unit. The size of the unit should be appropriate for your household needs, with a larger family requiring a larger water heater. Capacity is also an important factor to consider, as it will determine the amount of hot water that the unit can store at any given time.

Energy Efficiency

Another key feature to consider when purchasing a gas water heater is its energy efficiency. Gas water heaters come with an energy factor (EF) rating that indicates how efficient the unit is at converting gas into hot water. Look for a unit with a high EF rating, which can help you save on energy costs over time.

Type of Venting

Gas water heaters require proper venting to remove the combustion gases that are produced during operation. There are two types of venting: natural draft and power vent. Natural draft venting uses the natural buoyancy of hot air to expel gases from the unit. Power-vent venting uses a fan to push the gases out. 

Consider which type of venting will work best for your home, and ensure that the unit you select is compatible. If you're replacing an old water heater, you'll have to get a new one with the same type of venting.

Safety Features

Safety features are an essential consideration when purchasing a gas water heater. Look for units with safety features such as a temperature and pressure relief valve, which will prevent the unit from overheating or becoming overpressurized. Some models also come with a flammable vapor ignition resistance feature, which can prevent fires from flammable vapors near the unit.


The warranty offered by the manufacturer is also an important feature to consider when purchasing a gas water heater. Search for units with a warranty that covers both parts and labor and ensure that the warranty is for a sufficient length of time to provide you with peace of mind.

Installation and Maintenance

Consider the installation and maintenance requirements of the unit you select. Gas water heaters should be installed by a licensed professional, and some models may require additional venting or gas lines. For more information on gas water heaters, contact a professional near you.