How to Get Hot Water Fast at the Kitchen and Bathroom Sink

Dealing with the frustrating issue of waiting too long for hot water to reach your shower? Look no further, as we provide answers on how to get hot water fast from your water heater to where you need it.

When considering a new tankless water heater, opting for a model with a built-in recirculation feature is highly recommended. These innovative models, which we will review below, offer the convenience of near-instant hot water delivery throughout your home.

For those with tank-type water heaters, another effective solution is to install a hot water booster or a circulation pump with a dedicated recirculation line. These additions can significantly improve the speed and efficiency of hot water delivery.

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It’s worth noting that proper installation planning plays a vital role in avoiding slow hot water delivery issues altogether. By taking the time to plan and execute a well-designed installation, you can save yourself from headaches, complaints, unnecessary water and energy waste, and ultimately, higher utility bills.

Don’t let the frustration of slow hot water delivery continue. Explore the recommended solutions below and take the necessary steps to ensure a swift and efficient hot water supply to your kitchen and bathroom sinks. Say goodbye to waiting and hello to the convenience of readily available hot water.

How to Get Hot Water Fast by Installing a Dedicated Electric Water Heater

Proper installation of a water heater is crucial for its long-term and uninterrupted operation, as well as efficient hot water delivery. It’s important to install the water heater with a piping system that is as short as possible and strategically located near the fixtures where hot water is needed, such as bathrooms, kitchens, laundry areas, and garages.

If you have a sink that is far away from the water heater, resulting in slow hot water delivery, consider installing a point-of-use water heater (POU), such as an Eemax, Tempra or Tronic tankless or Ariston as the small tank-type appliance.

When there is a considerable distance between the water heater and a fixture, it takes time for hot water to reach the desired location because the cold water stored in the pipes needs to be pushed out first. By minimizing the distance between the heater and the fixture, you can expedite the removal of cold water from the pipes, resulting in faster hot water delivery, regardless of whether you have a tankless or tank-type water heater. Additionally, it is recommended to insulate all water lines, especially those running through areas with lower temperatures, to further optimize heat retention.

When purchasing a water heater, it is essential not to solely rely on marketing terms like “instantaneous.” While true instantaneous hot water may not be achievable in all cases, there are effective solutions available, such as recirculation systems and boosters, that can provide you with near-instant hot water when needed. These options ensure that you have quick access to hot water without any frustrating delays.

By considering factors like installation location, distance, insulation, and the right supplementary systems, you can enhance the efficiency and performance of your water heater, guaranteeing a steady supply of hot water whenever you need it.

How to Get Hot Water Faster by Installing a Tankless Water Heater With Recirculation

If you’re in the market for a tankless water heater that offers the convenience of a built-in recirculation system, look no further than the exceptional Navien NPE-A and Rinnai RUR series. These innovative models go beyond standard tankless water heaters by incorporating advanced recirculation technology, ensuring hot water is delivered swiftly and efficiently throughout your home.

Now, let’s delve into a brief overview of both models.

Navien NPE-A series

Navien NPE-A-NV
Navien NPE-A-NV

The Navien NPE-A series offers three models designed for different home sizes: NPE-180A, NPE-210A, and NPE-240A. These models have a gas input of up to 199,900 BTU and a water flow of up to 11.2 GPM (with a temperature rise of 35°F). The largest model, NPE-240A, is suitable for large homes with up to 4 bathrooms. However, if you require less power or water flow, you can opt for one of the two smaller models.

All models come equipped with an internal circulation pump, and it is also possible to add an external pump to the water heating system for recirculation applications. It’s important to ensure that the external pump is appropriately sized to provide the desired water flow. The circulation pump is responsible for speeding up the delivery of hot water.

This ultra-high efficient series of tankless water heaters achieves a remarkable energy factor of 0.95, resulting in significant savings for users. The low gas emission burner and environment-friendly operation contribute to its efficiency.

One standout feature of the Navien NPE-A models is the ComfortFlow technology, which sets them apart from other models or brands. This technology minimizes water temperature fluctuations within the system, ensuring more enjoyable showers and hot water delivered when needed. The system recognizes usage patterns, saving water and time when utilizing the recirculation mode.

Only the NPE-A models offer two pre-heating modes: internal and external recirculation mode. The mode is selected by adjusting the position of the DIP switch (which is initially set to OFF) and positioning the 2-way valve. The process of switching between the two modes is simple and straightforward.

Internal recirculation mode

Set the 2-way valve to “INT.” position

Set the DIP switch to 1-ON, 2-OFF

External recirculation mode

Set the 2-way valve to “EXT.” position

Set the DIP switch to 1-OFF, 2-ON

Regardless of the chosen mode, you can expect fast hot water delivery with minimal occurrence of the “cold-water-sandwich” effect, and there is no minimum water flow rate requirement.

In situations requiring additional hot water, the cascading capability of the NPE-A models allows up to 16 units to be linked into a single system.

For convenient operation, all these features can be controlled from the main command center located on the unit’s front panel. The advanced electronics enable users to easily control, monitor, and troubleshoot the system using the provided error codes from the diagnostics system.

Maintenance is also crucial. For instance, the inlet water filter located inside the cold-water inlet should be periodically cleaned to ensure proper water flow. Any obstructions within the filter can result in reduced flow and slow water delivery.

Rinnai RUR

Rinnai RUR
Rinnai RUR

Rinnai tankless RUR water heaters like the aforementioned Navien units, are on-demand systems that provide an endless supply of hot water. Thanks to advanced electronics, these units offer consistent temperatures and greatly reduce the occurrence of the “cold-water-sandwich” effect.

With a powerful and eco-friendly gas burner capable of producing a maximum power of 199,000 BTU and delivering up to 9.8 GPM of hot water to multiple fixtures and high-demand applications, Rinnai RUR water heaters offer superb efficiency and ultra-low NOx gas emissions.

Moreover, the RUR models can be conveniently monitored and controlled remotely using smartphones, offering energy and cost savings, as well as enhanced comfort and convenience.

What sets the Rinnai RUR series apart for faster hot water delivery is its compliance with ThermaCirc360 – a water heating recirculation technology. Even without a dedicated return line, the RUR units ensure fast delivery of hot water.

The implementation of instantaneous or near-instantaneous hot water delivery significantly reduces time and energy waste. The ThermaCirc360 recirculation technology incorporates bypass technology, an internal pump, Circ-Logic recirculation technology, a 24-hour digital controller, and a thermal bypass valve.

By utilizing recirculation technology, Rinnai RUR water heaters guarantee faster hot water delivery throughout your home, minimizing wait times, and enhancing convenience and comfort. Additionally, this technology reduces energy consumption and greenhouse emissions, making it an eco-friendly choice.

Have Hot Water Delivered Fast by Installing a Booster

If you are the owner of an electric or gas tank-type water heater and experience slow or insufficient hot water reaching your shower or tap, or if you find yourself running out of hot water quickly, installing a water heater booster can provide a solution. One option is to use a small point-of-use water heater as a booster, such as the Rheem RTEX series.

According to manufacturers, boosters can increase hot water delivery by up to close to 50%, significantly improving performance and comfort when installed according to instructions. For example, Rheem states that with the booster, a 30-gallon short unit can deliver hot water equivalent to a 40-gallon medium unit, and a 50-gallon tall model can provide the capacity of an 80-gallon unit, offering increased capacity to meet your needs.

This compact electric unit weighs only a few pounds, making it easy to install directly onto a tank or a nearby wall.

Install a Mixing Valve to Get Hot Water Faster

You can also buy a water heater mixing valve, which serves as a tank booster, allowing you to set higher temperatures inside the tank. This convenient add-on feature connects the cold inlet and hot outlet, effectively mixing both cold and hot water, resulting in a lower outgoing temperature delivered to all fixtures. This ensures that water is delivered at safe temperatures, preventing scalding injuries. Additionally, storing hot water at higher temperatures can help reduce Legionella growth within the tank. According to manufacturer information, this type of booster can increase usable water by more than 200%, although the exact increase may vary.

There are also other available options for getting hot water faster. One of the options is to install a circulation pump, such as this Grundfos, along with a dedicated line from the water heater to the point-of-service. Another option is to install a dispenser, like the Insinkerator. The choice ultimately depends on your specific needs and preferences.

Other Ways to Get Hot Water Quickly

In addition to the methods mentioned earlier, there exists a multitude of other approaches to obtain hot water quickly, ensuring you have a wide range of options at your disposal.. Here are some methods you can try:

  1. Electric kettle: An electric kettle is one of the fastest ways to heat water. Fill the kettle with the desired amount of water, plug it in, and switch it on. The water will heat up rapidly, usually within a few minutes.
  2. Stovetop kettle: If you don’t have an electric kettle, a stovetop kettle can also heat water quickly. Fill the kettle with water, place it on the stove, and turn the heat to high. Keep an eye on it until the water reaches the desired temperature.
  3. Microwave: If you need hot water for a smaller quantity, you can use a microwave. Pour the water into a microwave-safe container and heat it in short intervals, stirring in between. Be cautious when using this method as water heated in a microwave can become superheated and potentially explode when disturbed.
  4. Instant hot water dispenser: Instant hot water dispensers are a game-changer when it comes to obtaining hot water quickly. Installed in your kitchen, these convenient systems are seamlessly connected to your water supply, allowing them to provide hot water on demand. With just a simple press or turn, you can enjoy hot water at a moment’s notice, eliminating the need for waiting or boiling water on the stove.


This comprehensive guide has provided you with valuable insights on how to get hot water fast. By exploring various efficient methods and techniques, you now have the knowledge and tools necessary to eliminate the frustrating delays and enjoy instant hot water solutions. From implementing rapid heating techniques to utilizing handy tips and reliable strategies, you have learned how to unlock the secret of obtaining hot water quickly and effortlessly. With these newfound skills, you can bid farewell to the wait and embrace the convenience of hot water on demand. So, the next time you need hot water fast, put your knowledge into action and enjoy the efficiency it brings to your daily life.

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