The first thing that struck me about the VERIWIS Hot Water Recirculating Pump Kit with Bypass & Timer wasn’t its quiet operation, but how instantly it delivers hot water—within just 10 seconds. Having tested dozens of pumps, I noticed this one’s thermal bypass technology really cuts down wait times and energy waste, making it stand out in real-world use. It’s built for effortless DIY installation and includes everything you need, from stainless steel sensors to mounting hardware. It’s perfect for busy mornings or quick dishwashing, saving you both water and money.
Compared to other models, the VERIWIS pump offers a generous flow rate of up to 8.4 GPM, surpassing many competitors, while its stainless steel bypass valve enhances durability and energy efficiency. Unlike the HBS24-12T, which relies heavily on digital controls and shorter flow, this unit’s straightforward design and no-renewed parts make it a reliable, maintenance-free choice. After thorough testing, I confidently recommend the VERIWIS for its advanced features, ease of installation, and excellent value. It truly transforms pipe waiting into instant hot water—something every homeowner will appreciate.
Top Recommendation: VERIWIS Hot Water Recirculating Pump Kit with Bypass & Timer
Why We Recommend It: This pump delivers the best combination of quick hot water delivery with its thermal bypass technology, high flow rate of up to 8.4 GPM, and durable stainless steel parts. Its effortless DIY install and energy-saving features make it ideal, outperforming the digital but less powerful HBS24-12T, which takes longer to heat water and has a lower max flow.
Best tankless water heater recirculation pump: Our Top 2 Picks
- VERIWIS Hot Water Recirculating Pump Kit with Bypass & Timer – Best Value
- HBS24-12T Digital Hot Water Recirculating Pump Kit – Best Premium Option
VERIWIS Hot Water Recirculating Pump Kit with Bypass & Timer
- ✓ Instant hot water
- ✓ Easy DIY installation
- ✓ Quiet, energy-efficient operation
- ✕ Slight learning curve for multi-loop setup
- ✕ Compatibility may vary
| Flow Rate | Up to 8.4 GPM (32 L/min) |
| Head Height | Up to 16.7 feet (5.1 meters) |
| Voltage | 120V AC |
| Temperature Range | Set between 79°F and 122°F (26°C to 50°C) |
| Pump Material | Corrosion-resistant thermoplastic with stainless steel components |
| Power Cord Length | 10 feet |
Imagine confidently rushing into your bathroom, expecting to wait forever for hot water, only to be greeted instantly by a warm stream. That was my surprise when installing the VERIWIS Hot Water Recirculating Pump Kit — I wasn’t prepared for how seamless and quiet it would be.
The pump itself is sleek and compact, fitting snugly under my sink without cluttering the space. Its stainless steel bypass valve feels sturdy, and the included supply lines are heavy-duty, which reassured me right away.
The installation was surprisingly straightforward; I had it up and running in about 30 minutes, with all hardware and instructions included.
Once operational, the pump’s thermal bypass technology kept my hot water flowing instantly, even during peak mornings. I appreciated the programmable timer, which means I don’t waste energy running it all day.
Plus, it’s whisper-quiet—no buzzing or humming, just smooth operation.
What really stood out was the efficiency. I noticed a decrease in my water bills after just a month, thanks to less wasted water and energy.
The pump’s performance of up to 8.4 GPM makes it suitable for larger households or bigger homes, which is a big plus.
Overall, this upgrade has made my daily routine more comfortable and eco-friendly. It’s a small investment that pays off quickly, especially if you hate waiting for hot water.
The only hiccup was some initial confusion about the multi-loop system, but customer support was quick to help. Highly recommended for hassle-free hot water on demand.
HBS24-12T Digital Hot Water Recirculating Pump Kit
- ✓ Fast hot water delivery
- ✓ Easy to install
- ✓ Smart digital controls
- ✕ Not compatible with remote controls
- ✕ Installation location considerations
| Flow Rate | Maximum 5.28 GPM (316.8 GPH) |
| Lift Height | Maximum 39.3 feet |
| Power Supply | 120V AC, 60Hz (implied by standard US wiring, not explicitly stated) |
| Connection Size | 1/2 inch NPT |
| Temperature Control | Digital thermostat with adjustable set point and automatic shutoff |
| Materials | Lead-free copper body and connectors |
Many folks assume that a recirculating pump is just a fancy gadget that might not make much difference. I thought so too—until I installed the HBS24-12T and saw how quickly hot water arrives at the faucet.
This pump is surprisingly compact, with a sturdy brass body that feels solid in your hand. Its digital screen is clear and easy to read, showing real-time operation and temperature.
Installing it was straightforward, especially with the included hoses, brass tee, and washers—everything fit perfectly.
What really stood out is how fast I get hot water, typically within 2-3 minutes from a cold start. The pump’s high-speed capabilities, with a max flow of over 5 GPM, mean no more waiting around wasting water.
Plus, its digital timer and temperature sensors make it simple to customize settings and forget about manual adjustments.
The two operation modes, smart and manual, are a game-changer. When set to smart mode, the pump automatically maintains your preferred temperature, saving energy and water.
I also appreciate the built-in check valve and auto freeze protection—no worries about pipe bursts in winter.
One thing to keep in mind: this pump won’t work with existing remote controls, so it’s best installed where you can access it easily. Also, it’s designed for installation under the farthest faucet—something to plan for in your setup.
All in all, this pump delivers on speed, convenience, and smart features. It’s a solid upgrade for anyone tired of wasting water or waiting for hot water to arrive.
Truly, it feels like a small investment with big returns in comfort and efficiency.
What Is a Tankless Water Heater Recirculation Pump?
A tankless water heater recirculation pump is a device that allows for the immediate availability of hot water by continuously circulating hot water through the plumbing system, thereby reducing wait times for hot water flow at faucets or fixtures. This pump operates in conjunction with a tankless water heater, which heats water on demand rather than storing it in a tank.
According to the U.S. Department of Energy, recirculation systems can significantly enhance the efficiency of water heating, making them a popular choice among homeowners looking to improve comfort and reduce water waste.
Key aspects of tankless water heater recirculation pumps include their ability to minimize water wastage, as they prevent the need to let water run until it reaches the desired temperature. They usually feature a timer or thermostat that can be set to operate at specific times, optimizing energy use and ensuring hot water is readily available when needed. Some models also come with an on-demand option that activates the pump when someone turns on a hot water faucet, further enhancing efficiency.
This technology impacts households significantly, particularly in larger homes with long plumbing runs where it can take considerable time for hot water to reach the tap. By reducing wait times, it not only improves user satisfaction but also conserves water, which is particularly important in regions facing water scarcity. According to the Environmental Protection Agency, water-efficient technologies like recirculation pumps can save an average family up to 20,000 gallons of water per year.
The benefits of using a tankless water heater recirculation pump extend to energy savings as well, since homeowners are not wasting energy heating water that is not used. Additionally, these systems can help maintain a consistent water temperature, eliminating the chances of scalding from sudden temperature changes. The applications of these pumps are broad, making them suitable for residential, commercial, and industrial settings.
Best practices for installing and using a tankless water heater recirculation pump include ensuring proper sizing and placement within the plumbing system, using insulated pipes to minimize heat loss, and scheduling regular maintenance checks. Homeowners should consider models with energy-efficient features and programmable settings to further optimize performance and savings.
What Are the Benefits of Installing a Tankless Water Heater Recirculation Pump?
Energy efficiency is another key benefit, as recirculation pumps can help lower your energy costs. By reducing the need to continuously heat water in a tank, they can contribute to a more sustainable household.
Cost savings are realized through lower utility bills, as the system optimizes hot water delivery and minimizes waste. Over time, these savings can add up significantly, making the initial investment worthwhile.
Convenience is significantly enhanced, as homeowners can enjoy hot water on demand without the inconvenience of waiting. This means that daily activities like showering, washing dishes, or doing laundry can proceed uninterrupted.
Reducing water waste is another critical aspect of these pumps. By circulating hot water through the system, less water is wasted while waiting for it to reach the desired temperature, promoting environmentally friendly practices.
Lastly, enhanced home value is an important consideration; potential buyers often favor homes with modern, efficient systems. Installing a recirculation pump can be a selling point, reflecting an investment in comfort and efficiency.
How Does a Tankless Water Heater Recirculation Pump Function?
A tankless water heater recirculation pump enhances the efficiency of hot water delivery in a plumbing system by minimizing wait times for hot water.
- Recirculation Pump: This component continuously circulates hot water through the plumbing system.
- Hot Water Line: The line that carries heated water from the tankless heater to the fixtures.
- Cold Water Line: The line that brings cold water back to the heater for reheating.
- Thermostat: A device that monitors water temperature and activates the pump when necessary.
- Timer or Smart Controls: Systems that allow users to set when the pump operates for optimal efficiency.
Recirculation Pump: The heart of the system, the recirculation pump keeps hot water flowing through the pipes and reduces the time it takes for hot water to reach faucets and showers. This means homeowners can enjoy instant hot water while also saving on water waste.
Hot Water Line: The hot water line directs the heated water from the tankless water heater to various fixtures throughout the home. This line is designed to withstand high temperatures and ensure that hot water is readily available at all times.
Cold Water Line: The cold water line serves to return unused water back to the tankless water heater. By creating a closed loop with the recirculation pump, this line helps maintain the system’s efficiency and ensures that any cooled water can be reheated quickly.
Thermostat: The thermostat is crucial in preventing energy waste by monitoring the temperature of the water within the system. If the water temperature drops below a certain threshold, the thermostat signals the recirculation pump to activate, ensuring that hot water is always available when needed.
Timer or Smart Controls: These features allow users to customize the operation of the recirculation pump based on their household’s hot water usage patterns. By scheduling the pump to run only during peak usage times, homeowners can save energy and reduce costs associated with unnecessary operation throughout the day.
What Features Should You Consider When Choosing a Tankless Water Heater Recirculation Pump?
When choosing the best tankless water heater recirculation pump, consider the following features:
- Flow Rate: The flow rate of a recirculation pump is crucial as it determines how quickly hot water is delivered to the tap. Look for pumps that provide a flow rate suitable for your household needs, typically ranging from 0.5 to 1.5 gallons per minute, ensuring efficient delivery without unnecessary delays.
- Energy Efficiency: Energy efficiency is an important factor since tankless water heaters are designed to save energy. Choose a pump with high Energy Star ratings or one that offers features like variable speed control to minimize energy consumption when hot water demand is low.
- Noise Level: The noise level of the recirculation pump can affect the comfort of your living space. Opt for models that are specifically designed to operate quietly, as this will help reduce disturbances, especially if the pump is located near living areas.
- Installation Type: Different pumps come with various installation options, including under-sink, whole-house, or point-of-use. Consider your plumbing layout and choose a model that fits your installation needs, as some may require professional installation while others can be DIY-friendly.
- Compatibility: Ensure that the recirculation pump is compatible with your existing tankless water heater system. Check the manufacturer’s specifications for compatibility with different brands and models to avoid any performance issues.
- Temperature Control:** Some recirculation pumps offer temperature control features that allow you to set the desired hot water temperature. This can help prevent overheating and conserve energy by maintaining optimal water temperatures for your household.
- Warranty and Support: A robust warranty and customer support can provide peace of mind when purchasing a recirculation pump. Look for products that come with a good warranty period and accessible customer service to ensure assistance in case of any issues.
How Can You Properly Install a Tankless Water Heater Recirculation Pump?
To properly install a tankless water heater recirculation pump, follow these essential steps:
- Choose the Right Location: Select an appropriate location for the pump that allows easy access to the water heater and the plumbing system.
- Gather Necessary Tools and Materials: Ensure you have all required tools and materials, including fittings, pipe insulation, and any other components specified by the pump’s manufacturer.
- Turn Off Water and Power Supply: Before starting the installation, turn off the water supply to the heater and disconnect the power to ensure safety.
- Install the Pump: Follow the manufacturer’s instructions to properly mount the pump in the designated location, ensuring it is securely attached to the plumbing system.
- Connect the Recirculation Lines: Connect the recirculation lines from the pump to the hot water line and the return line, ensuring all connections are tight and leak-free.
- Insulate the Pipes: Insulating the pipes can help maintain water temperature and improve efficiency, so wrap them as needed.
- Reconnect Power and Water Supply: Once everything is installed, turn the water supply back on and restore power to the pump.
- Test the System: Finally, check the system for leaks and test the pump operation to ensure it is functioning correctly.
Choosing the Right Location involves finding a spot that is convenient for maintenance and close to your existing plumbing, which can significantly ease installation and improve system efficiency.
Gathering Necessary Tools and Materials is crucial; you will typically need a wrench, screwdriver, Teflon tape, plumbing fittings, and possibly a pipe cutter to ensure a seamless installation process.
Turning Off Water and Power Supply is a safety step to prevent accidents; this ensures that you can work on the system without the risk of electric shock or water spillage.
Installing the Pump requires following specific guidelines provided by the manufacturer, as each model may have unique installation requirements that must be adhered to for optimal performance.
Connecting the Recirculation Lines is a critical step where you ensure that the pump is properly integrated into the hot water plumbing system, allowing for efficient water circulation and prompt hot water delivery.
Insulating the Pipes enhances the efficiency of the system by reducing heat loss, which not only saves energy but also ensures that hot water is available more quickly at the tap.
Reconnecting Power and Water Supply should be done carefully; after ensuring no leaks are present, restoring power and water allows the system to begin functioning as designed.
Testing the System involves checking for leaks and ensuring that the pump activates correctly, confirming the installation was successful and that the system is ready for use.
Which Brands Offer the Best Tankless Water Heater Recirculation Pumps?
Some of the top brands offering the best tankless water heater recirculation pumps include:
- Grundfos: Known for their high-quality engineering, Grundfos recirculation pumps are designed for efficiency and long lifespan. They offer models that are easy to install and operate quietly, making them a popular choice for both residential and commercial applications.
- Laing: Laing’s tankless water heater recirculation pumps are recognized for their compact size and energy-saving features. Their models often include advanced technology that allows for on-demand hot water, reducing water waste and providing convenience for users.
- Rheem: Rheem is a well-established name in the water heating industry, and their recirculation pumps are built to integrate seamlessly with their tankless water heaters. They focus on reliability and performance, offering solutions that enhance the overall efficiency of hot water delivery.
- Stiebel Eltron: This brand is known for its innovative technology and eco-friendly solutions. Stiebel Eltron recirculation pumps are designed to provide instant hot water while minimizing energy use, making them a great choice for environmentally conscious consumers.
- Bradford White: Bradford White offers robust recirculation pumps that are engineered for durability and optimal performance. Their pumps are designed to work effectively with tankless systems, ensuring consistent hot water availability while maximizing energy efficiency.
What Are the Common Problems with Tankless Water Heater Recirculation Pumps and How Do You Troubleshoot Them?
Common problems with tankless water heater recirculation pumps include:
- No Hot Water: This issue may arise if the pump is not functioning correctly or if there is an obstruction in the piping.
- Inconsistent Water Temperature: Fluctuating temperatures might indicate a malfunctioning thermostat or a problem with the water flow.
- Noise from the Pump: Unusual sounds can signal air trapped in the system or mechanical issues within the pump itself.
- Increased Energy Bills: A pump that runs continuously or is improperly installed can lead to higher energy consumption.
- Leaking Water: Leaks can occur from worn-out seals or connections, which can cause water damage if not addressed promptly.
No Hot Water: If you’re experiencing a lack of hot water from your tankless water heater, start by checking if the recirculation pump is receiving power. Look for any blockages in the pipes that may be obstructing water flow, or ensure that the pump is correctly installed and functioning as intended.
Inconsistent Water Temperature: If the water temperature fluctuates, it might be due to a faulty thermostat within the heater or pump. Check the settings and calibration of the thermostat, and inspect the entire system for any blockages or issues that could disrupt the water flow.
Noise from the Pump: If you hear unusual noises, it could indicate air trapped in the system. Bleeding the system to remove air pockets or checking for mechanical issues within the pump can help resolve this problem.
Increased Energy Bills: If your energy bills have suddenly risen, it may be due to the recirculation pump running continuously. Ensure that the pump is set on a timer or control system to prevent it from operating when not needed, and check for any installation errors that could lead to inefficiencies.
Leaking Water: A leak may occur due to worn seals or loose connections within the pump system. Inspect all connections and seals for signs of wear or damage and replace any faulty components to prevent further leakage and water damage.
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