How Does an Endless Water Heater Work?

How Does an Endless Water Heater Work?

If you’ve ever heard of tankless propane water heaters, you probably think that the technology is magical since it almost seems too good to be true! But in reality, the science behind them is much less complex than you would think at first glance.

 An endless hot water heater is a water heating system that provides a continuous hot water supply. Unlike traditional water heaters, which store hot water in a tank and can run out of hot water if the demand exceeds the tank’s capacity, endless hot water heaters heat water on demand, so there is no risk of running out of hot water. 

These systems work by passing cold water through a series of heating elements or a heat exchanger, which raises the temperature of the water to the desired level. This exchanger can continuously heat the water for as long as necessary, the output capacities varying from around 2 to 5 gallons per minute, or even more, depending on the model. The hot water is then delivered to the fixtures and appliances that need it, such as showers, sinks, and washing machines.

Types of Endless Hot Water Heaters

There are several different types of endless hot water heaters. Each of these models has various advantages and disadvantages depending on what specific criteria your home needs.

Electric endless hot water heaters use electricity to heat the water as it passes through the system. These systems are generally smaller and more compact than gas-fired models, which can be a good option for homes with limited space. However, electric models may not be as powerful as gas-fired models, so they may not be able to provide hot water for multiple fixtures at once.

Electric Water Heater
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Solar-powered endless hot water heaters use solar panels to collect energy from the sun, then heat the water as it passes through the system. They may not be suitable for all climates and may require additional heating elements to provide hot water during cloudy or cold weather. 

Gas-fired endless hot water heaters use natural gas or propane to heat the water. These systems are typically more extensive and powerful than electric models and can simultaneously provide hot water for multiple fixtures. 

Propane water heaters are typically the most popular models of endless water heaters due to their many benefits and overarching accessibility, undoubtedly being one of the top-tier propane use ideas. 

In addition to the different model types, another criterion of tankless water heaters that needs consideration is whether you should use a non-condensing, condensing, or non-condensing hybrid heater. The main difference between these tankless water heaters is how they handle the combustion process’s byproduct.

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Non-condensing tankless water heaters release the byproduct directly into the atmosphere through a vent. Condensing tankless water heaters capture the byproduct, typically water vapor, and use it to preheat the incoming cold water. This process makes the water heater more efficient, as it can use the heat from the byproduct to warm the water before it passes through the heating elements or heat exchanger.

Non-condensing hybrid tankless water heaters use a combination of both of these approaches. They release some of the byproducts into the atmosphere but also capture and use some of it to preheat the incoming cold water, providing a balance between efficiency and cost, as these systems are more efficient than non-condensing models but less expensive than condensing models.

Overall, condensing tankless water heaters are the most efficient type of tankless water heater, as they use the heat from the byproduct to preheat the water and reduce the energy needed to heat the water to the desired temperature. Non-condensing and non-condensing hybrid tankless water heaters are less efficient, but they may be a more cost-effective option for some applications.

Water Heater
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Benefits of an Endless Hot Water Heaters

One of the main advantages of endless water heaters is their energy efficiency. Because they only heat water when needed, rather than constantly maintaining a tank of hot water, they use less energy than traditional water heaters.

Typically, people’s biggest grievance with traditional water tanks is their limited capacity. You can only go up to the amount of hot water stored in the tank, meaning that if there are many people in the household actively using water, you can run out fairly quickly. Though you could always buy a larger tank, the price beyond standard models increases exponentially- making it far less cost-effective than transferring to an endless heating system.

Another advantage of endless water heaters is their compact size. Because they do not require a large tank, they can be installed in tight spaces like crawl spaces, mounted on walls, or even under sinks, making tankless water heaters a good option for homes with limited space.

Besides the other advantages, endless water heaters have a longer lifespan than traditional water heaters. Because they do not have a tank that can rust or corrode over time, they can last for many years with minimal maintenance.

Endless Hot Water Heater Installation

Endless hot water heater installation typically involves the following steps:

  1. Choose a location for the water heater close to the fixtures and appliances that will use hot water, such as the shower, sink, and washing machine. The site should also be near a gas line (if using a gas-fired model) and have sufficient ventilation.
  2. Turn off the power or gas supply to the water heater and any fixtures or appliances connected to the system.
  3. Install the appropriate piping and fittings to connect the water heater to the water supply and the fixtures or appliances that will use hot water. This may involve cutting and fitting pipes, installing shut-off valves, and connecting the water heater to the gas line.
  4. Install the water heater according to the manufacturer’s instructions. This may involve mounting the unit on the wall, attaching the gas line and venting system for proper propane delivery, and connecting the water and electrical lines.
  5. Test the water heater to ensure it is functioning correctly and deliver hot water to the fixtures and appliances as expected. This may involve running the hot water in the shower or sink or running a load of laundry in the washing machine.
  6. Make any necessary adjustments to the water heater or the plumbing system to ensure that the hot water is delivered efficiently and effectively.

In general, it is highly recommended to have a professional plumber install an endless hot water heater to ensure that it is installed correctly and safely. Attempting to install the water heater yourself without the proper knowledge and tools can be dangerous and damage the water heater or the plumbing system.

Tankless Water Heater being adjusted
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Contact Diversified Energy

Diversified Energy is partnered with the world’s top tankless water heater manufacturers, including Navien, Rinnai, and Bradford White. 

Our experienced technicians can answer any questions regarding residential or commercial products. They will only stop once you’re satisfied you found the right solution! Call us today, or visit your local Diversified Energy service center for more information.