If you’re wondering whether a tankless water heater is right for your home, you’ve come to the right place. Tankless water heaters, also known as on-demand or instantaneous water heaters, have become increasingly popular in recent years as an alternative to traditional storage tank water heaters.
In this comprehensive guide, we’ll walk you through the key pros and cons of tankless water heaters to help you decide if one is the best choice for your needs.
Here’s a quick answer if you’re short on time: Tankless water heaters provide hot water on demand without a storage tank, so they can save space and energy. However, they have a higher upfront cost and may require upgrading gas lines or electrical service.
They also work best for homes with spread out water usage.
How Tankless Water Heaters Work
Tankless water heaters, also known as on-demand water heaters, are becoming increasingly popular due to their energy efficiency and convenience. Unlike traditional water heaters that store and heat a large amount of water in a tank, tankless water heaters heat water only when it is needed.
This innovative technology offers several advantages over traditional water heaters.
On-Demand Heating
One of the key features of tankless water heaters is their ability to provide hot water on demand. When a hot water faucet is turned on, cold water enters the unit and passes through a heat exchanger. The heat exchanger quickly heats the water to the desired temperature, eliminating the need for a storage tank and reducing standby heat loss.
This on-demand heating system ensures that you have hot water whenever you need it, without the wait or worry of running out.
Endless Hot Water Supply
With a tankless water heater, you can enjoy an endless supply of hot water. Traditional water heaters have a limited capacity and can run out of hot water, especially when multiple appliances or faucets are being used simultaneously.
Tankless water heaters, on the other hand, can provide a continuous flow of hot water, making them ideal for households with high hot water demands. Whether you need to take a long shower, run the dishwasher, or do laundry, you can count on a tankless water heater to deliver consistent hot water.
More Compact Size
Another advantage of tankless water heaters is their compact size. Traditional water heaters require a large storage tank, which can take up a significant amount of space, especially in smaller homes or apartments.
Tankless water heaters, on the other hand, are much smaller and can be installed in tight spaces, such as closets or utility rooms. Their compact size not only saves space but also offers greater flexibility in terms of installation options.
Benefits and Advantages of Tankless Water Heaters
Energy and Cost Savings
Tankless water heaters are known for their energy efficiency, which translates into cost savings for homeowners. Unlike traditional water heaters that constantly heat and store water in a tank, tankless water heaters only heat water as it is needed.
This on-demand heating process eliminates the standby heat loss experienced with traditional water heaters, where energy is wasted to keep a large volume of water hot at all times. By only heating water when it is needed, homeowners can save up to 30% on their water heating bills, making tankless water heaters a great investment in the long run.
Unlimited Hot Water
One of the biggest advantages of tankless water heaters is the ability to provide unlimited hot water. With traditional water heaters, there is a limited supply of hot water stored in the tank. Once the hot water is used up, it takes time for the tank to refill and heat more water.
This can be inconvenient, especially for larger households or during peak usage times. Tankless water heaters, on the other hand, heat water as it flows through the unit, providing a continuous supply of hot water.
Whether you need a long, hot shower or multiple hot water sources running simultaneously, a tankless water heater can meet your demands without running out of hot water.
Longer Lifespan
Tankless water heaters have a longer lifespan compared to traditional water heaters. On average, tankless water heaters can last up to 20 years, while traditional water heaters typically last around 10-15 years.
This is because tankless water heaters do not have a storage tank that is prone to rust and corrosion over time. Additionally, tankless water heaters are built with durable components that are designed to withstand continuous use.
Although the initial cost of a tankless water heater may be higher, the longer lifespan can offset the investment and save homeowners money in the long term.
Safety
Tankless water heaters offer several safety advantages over traditional water heaters. One of the main safety benefits is the absence of a storage tank, which eliminates the risk of tank leaks and water damage.
Traditional water heaters can develop leaks over time, resulting in costly repairs and potential property damage. Tankless water heaters also have built-in safety features such as temperature controls, pressure relief valves, and flame failure protection.
These features help prevent accidents and ensure the safe operation of the unit.
Environmentally Friendly
Tankless water heaters are considered more environmentally friendly compared to traditional water heaters. The energy-efficient operation of tankless water heaters reduces carbon emissions and helps conserve natural resources.
According to the U.S. Department of Energy, tankless water heaters can be 24-34% more energy-efficient than traditional storage tank water heaters. This reduction in energy consumption not only benefits the environment but also contributes to lower utility bills for homeowners.
Drawbacks and Disadvantages of Tankless Water Heaters
Higher Upfront Costs
One of the main drawbacks of tankless water heaters is their higher upfront costs compared to traditional tank water heaters. Tankless models tend to be more expensive to purchase and install. However, it is important to consider the long-term savings that can be achieved through lower energy bills and increased energy efficiency.
May Require Electrical or Gas Service Upgrades
Another disadvantage of tankless water heaters is that they may require electrical or gas service upgrades in order to accommodate their higher energy demands. This can add to the overall installation costs and may require professional assistance.
However, it is important to consult with a qualified technician to determine the specific requirements for your home.
Flow Rate Limitations
Tankless water heaters have a limited flow rate, which means that they may struggle to supply hot water simultaneously to multiple appliances or fixtures in a home. If you have a large household with high hot water demand, you may experience a decrease in water pressure or temperature when multiple faucets or showers are being used at the same time.
Not Ideal for Homes With Spikes in Hot Water Usage
Tankless water heaters are designed to provide a continuous supply of hot water on demand. However, they may not be suitable for homes with spikes in hot water usage. For example, if you frequently use a large amount of hot water for activities such as filling a hot tub or running multiple loads of laundry simultaneously, a tankless water heater may struggle to keep up with the demand.
It is important to carefully consider the drawbacks and disadvantages of tankless water heaters before making a decision. While they offer many benefits, such as energy efficiency and space savings, it is crucial to assess your specific needs and hot water usage patterns to determine if a tankless water heater is the right choice for your home.
Who Should Consider Installing a Tankless Water Heater?
If you are considering upgrading your water heating system, a tankless water heater could be a great option for you. However, not everyone may benefit from this type of system. Let’s take a closer look at who should consider installing a tankless water heater:
Homes with Limited Space
Tankless water heaters are compact and take up significantly less space compared to traditional water heaters with storage tanks. This makes them an ideal choice for homes with limited space, such as apartments or small houses.
With a tankless water heater, you can free up valuable floor space and still enjoy a constant supply of hot water.
Low Hot Water Demand Households
For households with low hot water demand, a tankless water heater can be a cost-effective solution. Traditional water heaters with storage tanks continuously heat and store water, even when it is not being used. This leads to energy wastage and higher utility bills.
On the other hand, tankless water heaters only heat water on demand, resulting in energy savings. If your household has a small number of occupants or you do not use hot water frequently, a tankless water heater could be a wise investment.
Eco-Friendly Homeowners
If you are environmentally conscious and looking for ways to reduce your carbon footprint, a tankless water heater can be a great option. These units are more energy-efficient compared to traditional water heaters, as they only heat water when needed.
According to the U.S. Department of Energy, tankless water heaters can be up to 34% more energy-efficient than storage tank water heaters. This not only helps to reduce greenhouse gas emissions but also saves you money on your energy bills in the long run.
Installation Considerations for Tankless Water Heaters
When considering the installation of a tankless water heater, there are several important factors to take into account. Ensuring a proper installation will not only maximize the efficiency and performance of the unit, but also extend its lifespan. Here are some key considerations to keep in mind:
Professional Installation Recommended
While some homeowners may have the necessary skills to install a tankless water heater themselves, it is generally recommended to hire a professional for this task. Tankless water heaters require specific electrical or gas connections, as well as proper venting.
A professional installer will have the expertise to ensure that the unit is installed correctly and in compliance with local building codes.
Additionally, professional installation often comes with warranties or guarantees that can provide peace of mind in case any issues arise with the unit in the future.
Venting Requirements
Unlike traditional water heaters, tankless water heaters require specialized venting systems to safely remove exhaust gases. The venting requirements will depend on the type of fuel used (gas or electric) and the specific model of the tankless water heater.
Gas-powered tankless water heaters typically require Category III stainless steel venting, which can be more complex and expensive to install compared to the PVC venting used for electric units. It is crucial to follow the manufacturer’s guidelines and consult with a professional to ensure that the venting system is properly sized and installed.
Water Filter Recommended
Another important consideration for tankless water heater installation is the use of a water filter. Tankless water heaters are more sensitive to mineral deposits and impurities in the water supply compared to traditional water heaters.
These deposits can build up over time and impact the performance and efficiency of the unit.
Installing a water filter before the tankless water heater can help prevent sediment build-up and prolong the lifespan of the unit. It is recommended to consult with a water treatment professional to determine the appropriate type of filter for your specific water conditions.
By taking these installation considerations into account, homeowners can ensure a smooth and efficient operation of their tankless water heater while avoiding potential issues down the line.
Conclusion
In summary, tankless water heaters can be a great option for many homeowners due to their energy efficiency, endless hot water supply, compact size and long lifespan. However, the upfront cost is higher than traditional water heaters and they may require gas line or electrical upgrades.
Homes with low hot water demand and those with space constraints tend to benefit most from tankless water heaters. By weighing the pros and cons and installation requirements, you can decide if a tankless heater is right for your needs.
