Heating water for things like washing dishes, taking showers, and cooking is a fundamental part of household comfort, and this is why water heaters are so important to your daily life. There are two primary types of water heaters available today: traditional tank water heaters and more contemporary tankless water heaters. Your household’s demands, budget, and long-term energy goals should be the primary considerations when deciding between the two. Understanding how these two versions work and their differences is key to choosing the best model for your home.
What Is a Tankless Water Heater?
Tankless water heaters heat water on the fly as it flows through the device. The water goes from cold to hot in an instant when you switch on the hot water tap thanks to the heater’s powerful gas burners or electric coils.
How Do Conventional Water Heaters Work?
Conventional tank water heaters store a fixed quantity of heated water in a large insulated tank, usually between 30 and 80 gallons, depending on the household’s demands and the size of the tank. When you need hot water, it’s instantly available from the tank thanks to the preheating and storage feature. Once the hot water runs out, though, there can be a waiting period until hot water is available again as it preheats in the tank.
Initial Cost Differences
The upfront cost is a major factor for consumers when deciding between tank and tankless water heaters. In most cases, the initial investment of a traditional tank water heater is lower. Tank heaters, including installation, can cost anywhere from $500 to $1,500. The exact amount depends on the size and manufacturer.
Tankless water heaters, on the other hand, tend to cost more. Installation can be more complicated, including improvements to gas lines, electrical systems, or venting. The units themselves can cost $1,000 to $3,000 or more. Because of this, a tankless water heater may end up costing several thousand dollars more than a traditional tank system. Nevertheless, a lot of homeowners see this as an investment that will pay for itself in energy savings.
Energy Efficiency Differences
Tankless water heaters are superior to conventional models in terms of energy efficiency. Unlike tank water heaters, they conserve energy by only heating water when necessary. This greatly improves their efficiency, making them a great choice for homes that don’t need a lot of hot water. Based on water usage, tankless water heaters can be up to 34% more energy efficient than traditional tank systems, according to the US Department of Energy.
A tankless water heater may not be as efficient in households that use a lot of hot water. For example, the system’s efficiency might take a hit if there are a lot of operating appliances, such as dishwashers, clothes washers, and showers. Although tank water heaters aren’t the most energy-efficient option, they might be more practical for houses with high hot water demand all day long because the stored hot water is always ready to go without having to reheat it.
Operating Costs Differences
Utility expenses tend to be cheaper with tankless water heaters because of the reduced energy use over time. Household water usage and local energy tariffs determine the savings, though.
In contrast, the ongoing energy required to maintain the water temperature in a traditional tank water heater typically results in higher operating costs. This means that a tank system’s reduced purchase price may not be enough to cover the long-term cost of these high energy bills.
Lifespan Differences
The typical lifetime of a conventional tank water heater is eight to 12 years, though this might vary greatly by model and degree of care. The tank and heating elements might corrode and wear out with time, necessitating replacement more quickly than tankless systems.
Tankless water heaters have a far longer lifespan, typically 20 years or more with regular maintenance. People who intend to stay in their homes for a long time and would rather not deal with the inconvenience of replacing a water heater every 10 years or so may find tankless systems more appealing due to their longer lifespan.
Choosing the Best Water Heater for Your Home
Homes that benefit the most from conventional tank water heaters include:
- Larger homes with multiple bathrooms
- Homes with high simultaneous hot water usage
- Homes in colder climates where water heaters work harder
- Homes without significant space restrictions for water heater installation
- Homes where initial cost savings are a priority
Homes that benefit the most from tankless water heaters include:
- Smaller homes or apartments with limited space
- Homes with low to moderate hot water demand
- Energy-conscious homes aiming for high efficiency
- Homes with available natural gas lines or sufficient electrical capacity
- Homes in warmer climates where water heating demands are lower
If you need help choosing between a tank or tankless water heater, contact Benjamin Franklin Plumbing now.