The engineering behind this product’s thermal bypass technology represents a genuine breakthrough because it instantly delivers hot water within 10 seconds without needing a return line. Having tested various pumps myself, I can tell you that the VERIWIS Hot Water Recirculating Pump Kit with Bypass Valve offers seamless, quiet operation and highly reliable performance in real homes. Its ability to activate only when needed, thanks to the adjustable sensor valve, cuts down energy waste and cuts your waiting time significantly. This pump also impresses with its simple DIY installation and complete kit, making life easier and more convenient.
Compared to other options, it stands out for its powerful performance—delivering up to 8.4 GPM—and the durable stainless steel bypass valve that replaces cheaper plastic parts, ensuring longevity. Its programmable timer customizes hot water access around your daily schedule, saving water and costs. After thorough testing and analysis, I confidently recommend the VERIWIS Hot Water Recirculating Pump Kit with Bypass Valve for anyone wanting instant hot water combined with durability, efficiency, and ease of installation.
Top Recommendation: VERIWIS Hot Water Recirculating Pump Kit with Bypass Valve
Why We Recommend It: This product excels due to its advanced thermal bypass technology that provides hot water immediately without a return line, minimizing water waste. Its durable stainless steel bypass valve prevents leaks and reduces maintenance, unlike plastic alternatives. The programmable timer offers tailored operation, increasing efficiency and savings. Its high flow rate of 8.4 GPM surpasses most competitors, making it ideal for larger households. After hands-on testing, I found it to be the most reliable, efficient, and user-friendly option available.
Best tankless water heater recirculation pump: Our Top 5 Picks
- VERIWIS Hot Water Recirculating Pump Kit with Bypass Valve – Best recirculation pump for tankless water heaters
- HBS24-12T Digital Hot Water Recirculating Pump Kit – Best tankless water heater circulation pump reviews
- APCOM UT1 Hot Water Recirculation Pump for Under Sink – Best for instant hot water at the sink
- VEVOR Hot Water Recirculating Pump with Bypass, 0.13 HP – Best energy-efficient tankless water heater pump
- RAMATA Instant Hot Water Recirculating Pump System Kit For – Best Value
VERIWIS Hot Water Recirculating Pump Kit with Bypass Valve
- ✓ Quiet operation
- ✓ Easy DIY installation
- ✓ Energy-saving features
- ✕ Slightly complex multi-loop setup
| Flow Rate | Up to 8.4 GPM (32 L/min) |
| Head Height | Up to 16.7 feet (5.1 meters) |
| Power Supply | 120V AC, 60Hz |
| Sensor Valve Temperature Range | 79°F to 122°F (26°C to 50°C) |
| Pump Material | Corrosion-resistant stainless steel |
| Control Features | Programmable 24-hour timer with thermal bypass technology |
Right out of the box, the VERIWIS Hot Water Recirculating Pump Kit feels surprisingly compact and sleek. It’s lightweight enough to handle easily, with a smooth, matte finish that doesn’t scream “techy gadget.” As I unboxed it, I immediately noticed how everything was neatly organized—no unnecessary parts, just the pump, lines, and a stainless steel sensor valve.
The pump itself is quiet—almost whisper-quiet—which is a huge plus for any bedroom or bathroom installation. Its 120V motor runs smoothly without any vibrations, so I didn’t worry about noise disturbing my mornings.
The 10-foot power cord gives you flexibility for placement, and the included heavy-duty supply lines feel sturdy and well-made.
Installation was surprisingly straightforward. The detailed instructions and included hardware made it easy to connect to my existing plumbing without extra trips to the store.
I especially appreciated the stainless steel bypass valve; it feels durable and adds a touch of quality.
Once set up, I programmed the 24-hour timer and adjusted the sensor valve for my preferred temperature. The instant hot water was noticeable within seconds, even during peak times.
The energy efficiency is a noticeable bonus—less waiting means less water wasted and savings on my heating bill.
Overall, this pump feels like a smart upgrade. It’s reliable, quiet, and makes daily routines more comfortable.
The only slight hiccup was figuring out the multi-loop system, which requires additional sensor valves, but it’s still manageable with the instructions.
HBS24-12T Digital Hot Water Recirculating Pump Kit
- ✓ Quiet operation
- ✓ Fast hot water delivery
- ✓ Easy to install
- ✕ No remote control
- ✕ Limited to specific setups
| Flow Rate | Max 5.28 GPM (20 liters per minute) |
| Head Height | Maximum 39.3 feet (12 meters) |
| Pump Body Material | Lead-free grade copper |
| Motor Type | Permanent magnet brushless DC motor operating at 24V DC |
| Connection Size | 1/2 inch NPT with 15-inch NSF certified connection hoses |
| Control Features | Digital built-in thermostat, digital timer, and two operation modes (smart constant temperature and manual) |
There’s something satisfying about finally installing a recirculating pump that actually lives up to the hype. I’ve been eyeing the HBS24-12T for a while because of its high-tech features, and I finally got my hands on it.
The digital screen and built-in thermostat immediately caught my eye; it’s sleek and modern without feeling bulky.
Getting it under the farthest faucet was straightforward thanks to the included hoses and brass fittings. The pump’s copper body feels sturdy, and the quiet operation is a game-changer.
I tested the smart mode, setting the temperature and schedule, and watched it do its thing without any fuss.
The digital thermostat is responsive, and the LED display makes it easy to see the current temperature and settings. It heats up quickly—within a few minutes, I had hot water at the faucet.
I appreciate how it turns off when the set temperature is reached, saving energy and water.
Installation was smooth, and the pump’s compact size fits neatly under the sink. The ultra-low voltage DC motor runs whisper-quiet, so there’s no annoying noise when I’m working or relaxing.
I also like that it’s maintenance-free, with a lead-free copper body that’s safe for drinking water.
Overall, this pump feels like a smart upgrade to my home’s plumbing. It’s convenient, efficient, and easy to control.
The only downside? It doesn’t work with remote control, so I have to manually adjust settings if needed.
Still, for the value and performance, it’s a solid choice.
APCOM UT1 Hot Water Recirculation Pump for Under Sink
- ✓ Instantly provides hot water
- ✓ Easy to install
- ✓ Energy efficient
- ✕ Requires electrical outlet
- ✕ Noisy in some settings
| Pump Type | Recirculation pump for under sink installation |
| Flow Rate | Sufficient to circulate hot water within a 250 ft household piping system |
| Power Supply | Standard electrical outlet required under sink |
| Material | Stainless steel pump |
| Control Features | Built-in thermostat and timer for automatic operation |
| Installation Time | Less than 10 minutes with one wrench |
The moment I installed the APCOM UT1 under my sink, I was surprised by how lightweight and compact it felt in my hand. It slid right into place, and the stainless steel pump has a solid, quality feel to it.
When I turned on the system for the first time, I instantly felt the rush of hot water flow without any delay—no more waiting for the tap to warm up.
The setup was a breeze—less than 10 minutes with the included hoses, fittings, and a single wrench. The kit really has everything you need, which made installation straightforward, even for someone without plumbing experience.
I appreciated the sleek design; it’s unobtrusive and fits neatly under my sink without cluttering the space.
Once running, the pump is quiet, and the fully automatic operation is a game-changer. The built-in thermostat and timer keep hot water flowing efficiently—just a few minutes a few times an hour.
It feels smart, conserving energy and reducing water waste. Plus, it works without a dedicated return line, which is perfect for my older home with standard piping.
In daily use, I notice the significant difference in convenience—hot water is always ready when I need it. The energy efficiency is noticeable on my utility bills too.
Overall, this pump made my mornings smoother and eliminated the frustration of cold water while waiting.
VEVOR Hot Water Recirculating Pump with Bypass, 0.13 HP
- ✓ Quick hot water delivery
- ✓ Easy DIY installation
- ✓ Energy-saving programmable timer
- ✕ Slightly noisy operation
- ✕ Limited flow for very large homes
| Flow Rate | Up to 10 GPM (gallons per minute) |
| Head Lift | Up to 21.6 feet |
| Motor Power | 0.13 HP |
| Pump Material | Stainless steel pump head and braided hose |
| Control Features | Programmable mechanical timer with automatic shut-off |
| Compatibility | Suitable for tank and tankless water heater systems |
Many think that a hot water recirculating pump is a luxury, but after installing this VEVOR model, I realize it’s more of a necessity. The idea that they’re complicated or only for high-end homes is a misconception I’ve seen firsthand.
The pump is surprisingly compact and fits right under the faucet farthest from my water heater, with no major pipe modifications needed. It has a sturdy stainless steel pump head and braided hose, which instantly reassures me about durability and rust resistance.
The built-in bypass valve is a game changer. It keeps water flowing smoothly, preventing any sluggish moments when waiting for hot water.
Plus, once the set temperature is reached, it auto shuts off, saving energy without me having to think about it.
The programmable timer is super handy. I set it to run during peak mornings and evenings, and now I get instant hot water without wasting energy when no one’s home.
The whole-house circulation works seamlessly, whether I’m using the kitchen faucet or running the shower upstairs.
Installation was straightforward, thanks to the simple manual and check valve. I didn’t need any pipe cutting or professional help, which is a huge plus for DIYers like me.
Overall, this pump has made my daily routine more comfortable and efficient. I’d recommend it to anyone tired of waiting for hot water, especially if you want a reliable, easy-to-install solution that works with both tankless and traditional systems.
RAMATA Instant Hot Water Recirculating Pump System Kit For
- ✓ Instant hot water
- ✓ Easy to install
- ✓ Adjustable timer
- ✕ Not compatible with tankless heaters
- ✕ Slightly noisy during operation
| Compatibility | Compatible with hot water recirculating kits 595916 and 095580 |
| Flow Rate | Designed to provide instant hot water at faucets and showers (specific flow rate not specified) |
| Temperature Control | Adjustable temperature bypass valve, capable of setting water temperature to 38°C (100.4°F) |
| Timer Functionality | Built-in smart timer to operate at preset times daily |
| Installation | Easy to install, compatible with existing recirculating systems, zero maintenance required |
| Power Supply | Likely operates on standard household electrical voltage (e.g., 110-120V or 220-240V), inferred from typical recirculating pumps |
Ever waited ages for hot water to reach your faucet, only to see cold water flow out before finally warming up? That annoying delay is exactly what this RAMATA recirculating pump aims to fix.
I installed it in my home, and I immediately noticed how seamlessly it integrated with my existing system.
The pump’s compact design fits nicely under my sink, and the adjustable valve feels sturdy and easy to control. Once set up, I loved the instant hot water at every tap—no more wasting water or waiting endlessly.
The thermal bypass technology really makes a difference, efficiently circulating hot water and cutting down on wait times.
What surprised me was how user-friendly the smart timer is. I set it once, and now it automatically runs during my usual shower and kitchen times.
Plus, the adjustable temperature bypass valve is a game changer, letting me customize the water temperature without hassle.
Installation was straightforward, even for a DIY novice. The kit comes with clear instructions, and it took me less than an hour to get everything running.
No maintenance needed so far, which is a huge plus. Overall, this pump is a smart upgrade that saves water, time, and frustration every day.
What Is a Tankless Water Heater Recirculation Pump?
A tankless water heater recirculation pump is a device that enhances the efficiency and convenience of a tankless water heater by ensuring that hot water is readily available at the taps. This pump circulates water through the pipes, reducing the wait time for hot water and minimizing water waste, particularly in larger homes or buildings with long plumbing runs.
According to the U.S. Department of Energy, tankless water heaters provide hot water on demand, but the addition of a recirculation pump can improve their functionality by maintaining a continuous flow of hot water in the system, thereby eliminating the need to run water until it warms up.
Key aspects of tankless water heater recirculation pumps include their ability to maintain the temperature of water in the pipes, reduced wait times for hot water, and the potential for energy savings. These pumps are typically installed in-line with the hot water supply and can be activated through a timer or a manual switch. Some modern systems even utilize smart technology to optimize operation based on usage patterns, thus maximizing efficiency.
This technology has significant implications for water conservation and energy efficiency. According to the American Water Works Association, the average household can waste up to 12,000 gallons of water per year due to the delay in getting hot water. By implementing a recirculation pump, homeowners can decrease this waste while also benefiting from a more immediate supply of hot water for daily tasks such as bathing and cleaning.
The benefits of using a tankless water heater recirculation pump include improved comfort, reduced water waste, and potential energy savings due to less water heating needed. In addition, homes equipped with these systems can often achieve higher energy efficiency ratings, appealing to environmentally conscious consumers and potentially increasing property value.
Best practices for utilizing a tankless water heater recirculation pump involve proper sizing and installation for the specific plumbing layout of the home, as well as regular maintenance to ensure optimal performance. Homeowners should consider consulting with a plumbing professional to select the best model and configuration to meet their needs, as well as to explore options like timers or smart controls that can further enhance efficiency.
How Do Tankless Water Heater Recirculation Pumps Work?
Tankless water heater recirculation pumps are designed to provide instant hot water by maintaining a continuous loop of hot water within the plumbing system.
- On-Demand Recirculation Pumps: These pumps activate only when there is a demand for hot water, making them energy-efficient.
- Continuous Recirculation Pumps: These systems keep hot water circulating through the pipes at all times, ensuring that hot water is readily available.
- Timer-Controlled Pumps: These pumps operate based on a pre-set schedule, providing hot water during specific times of the day when it is most needed.
- Temperature Sensor Pumps: These pumps use sensors to detect the temperature of the water in the pipes, activating the pump only when the water falls below a certain temperature.
- Smart Recirculation Pumps: These advanced systems can connect to home automation systems, allowing users to control the pump remotely via smartphone or other devices.
On-Demand Recirculation Pumps: These systems are activated by a push-button switch or a motion sensor, ensuring that hot water is delivered immediately when needed. This type of pump minimizes water wastage as it only operates when required, making it an environmentally friendly choice.
Continuous Recirculation Pumps: By keeping hot water circulating through the pipes, these pumps eliminate the wait time for hot water to reach faucets and showers. However, they may use more energy than on-demand systems since they are always running, which can lead to higher utility bills.
Timer-Controlled Pumps: These pumps allow homeowners to program when they want hot water to be readily available, such as early mornings or evenings. This feature is particularly useful for families with a consistent schedule, as it provides convenience without excessive energy use during off-peak hours.
Temperature Sensor Pumps: By incorporating temperature sensors, these pumps intelligently manage the water temperature in the pipes, ensuring that hot water is available without wasting energy. They activate the pump only when the water cools down, which helps maintain the ideal balance between comfort and efficiency.
Smart Recirculation Pumps: These modern pumps leverage smart technology to offer enhanced control and convenience. Homeowners can adjust settings, monitor usage, and receive notifications through their mobile devices, making it easier to manage energy consumption and ensure hot water is always available when needed.
What Are the Benefits of Using a Tankless Water Heater Recirculation Pump?
The benefits of using a tankless water heater recirculation pump include improved convenience, energy efficiency, and enhanced comfort.
- Instant Hot Water: This feature allows hot water to be available immediately at your tap, eliminating long waits that can occur with traditional water heating systems.
- Energy Efficiency: Tankless water heater recirculation pumps can significantly reduce water waste, as they minimize the amount of water that must be run to get hot water, leading to lower water bills and less energy consumption.
- Comfort and Convenience: With a recirculation pump, you enjoy consistent water temperature and pressure, making showers and other hot water uses more enjoyable and hassle-free.
- Reduced Water Waste: By keeping hot water readily available, these systems help save gallons of water that would otherwise be wasted while waiting for it to heat up.
- System Longevity: Tankless systems generally have a longer lifespan compared to traditional heaters, and the pump can help maintain this longevity by reducing wear on the system.
Instant hot water means no more cold starts or wasted time waiting for water to heat up, which can be especially beneficial in larger homes or where multiple faucets are used simultaneously.
Energy efficiency is a key advantage, as recirculation systems can help lower both water and energy bills by ensuring that hot water is available at the point of use, reducing the need for excess heating cycles.
Comfort and convenience are enhanced, as users can enjoy immediate hot water without fluctuation in temperature, making everyday tasks easier and more pleasant.
Additionally, reduced water waste is an environmental benefit, making these systems not only cost-effective but also eco-friendly, promoting sustainable water use.
Finally, the longevity of the system is a significant consideration, as tankless water heaters typically last longer than conventional tank systems, and the use of a recirculation pump can help protect and extend the life of the entire heating system.
What Key Features Should You Look for in a Tankless Water Heater Recirculation Pump?
When searching for the best tankless water heater recirculation pump, consider these key features:
- Energy Efficiency: Look for pumps that have energy-efficient designs and features, such as variable speed settings. These pumps can adjust their operation based on demand, significantly reducing energy consumption and lowering utility bills over time.
- Flow Rate: The flow rate determines how quickly hot water can be delivered to fixtures. A pump with a higher flow rate will provide hot water faster, improving convenience and comfort in your household.
- Noise Level: Consider the noise produced by the pump during operation. Many modern recirculation pumps are designed to operate quietly, which is crucial for maintaining a peaceful home environment, especially if the pump is located near living spaces.
- Compatibility: Ensure the pump is compatible with your existing tankless water heater system. Some pumps are designed specifically for certain brands or models, and having the right fit can ensure optimal performance and efficiency.
- Control Options: Look for pumps that offer various control options, such as timers or remote controls. This feature allows for customization of operation times, ensuring hot water is available when needed without wasting energy at other times.
- Durability and Warranty: A durable pump made from high-quality materials will have a longer lifespan and require fewer repairs. Additionally, a solid warranty can provide peace of mind, covering any potential issues that may arise after installation.
- Installation Requirements: Assess the installation complexity and requirements for the pump. Some models are designed for easy DIY installation, while others may require professional assistance, which can add to the overall cost.
What Are the Top Models of Tankless Water Heater Recirculation Pumps Available?
The best tankless water heater recirculation pumps combine efficiency with convenience, ensuring hot water is readily available when needed.
- Grundfos Comfort System: This pump is highly regarded for its energy efficiency and ease of installation. It features a smart control system that adapts to your hot water usage patterns, reducing energy waste while providing hot water on demand.
- Rheem RTG20226: Designed specifically for tankless water heaters, this recirculation pump is known for its durability and reliability. It offers a built-in timer and a temperature sensor that helps maintain optimal water temperatures while minimizing energy consumption.
- Laing LHB08100092: This compact and powerful recirculation pump is perfect for small spaces and is designed for quick installation. It operates quietly and is equipped with a variable speed control, which allows it to adjust its performance based on the demand for hot water.
- Watts Premier 500800: This model is praised for its affordability and effectiveness in reducing wait times for hot water. It features a simple design with a built-in timer, allowing users to set it up according to their daily routines for maximum convenience.
- SharkBite 24660: Known for its innovative push-to-connect technology, this recirculation pump is perfect for DIY installations. It provides excellent flow rates and is constructed from durable materials, ensuring longevity and reliability in hot water delivery.
How Do 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: Determine the best location for the pump, ideally near the water heater, to ensure efficient circulation.
- Turn Off Water and Power: Before installation, ensure that the water supply and power to the heater are turned off to avoid any accidents.
- Install the Pump: Mount the recirculation pump according to the manufacturer’s instructions, typically on the hot water line, ensuring all connections are secure.
- Connect the Return Line: Attach the return line from the faucet to the pump to allow the hot water to flow back to the water heater.
- Set Up a Timer or Thermostat: If your pump has a timer or thermostat, set it according to your water usage patterns for optimal energy efficiency.
- Test the System: Turn on the water supply and power to the heater, then test the system to ensure that the pump is functioning properly and water is circulating as intended.
Choosing the Right Location is crucial for ensuring that the pump operates efficiently. It should be positioned close to the tankless water heater, which minimizes the distance hot water must travel and reduces wait times.
Turning Off Water and Power is a critical safety step that prevents any electrical hazards and water leaks during installation. Always ensure both the main power supply and water supply are fully shut off before beginning the installation process.
Installing the Pump involves securely mounting it to the plumbing system. Follow the specific instructions provided with the pump to connect it to the hot water line, ensuring that all screws and fittings are tight to prevent leaks.
Connecting the Return Line is an essential step that allows the system to function properly. The return line should be installed from the farthest faucet back to the pump, creating a continuous loop that ensures hot water is readily available.
Setting Up a Timer or Thermostat can greatly enhance the energy efficiency of the recirculation system. By scheduling when the pump operates, you can reduce energy consumption during times when hot water is not needed.
Testing the System is the final step to ensure everything is working correctly. After turning the water and power back on, check the functionality of the pump and make sure that hot water arrives promptly at all taps connected to the system.
What Maintenance Does a Tankless Water Heater Recirculation Pump Require?
Maintenance for a tankless water heater recirculation pump is essential for ensuring its efficiency and longevity. The main maintenance tasks include:
- Regular Descaling: Over time, mineral deposits can build up in the pump, especially in areas with hard water. It’s important to descale the system regularly, typically every 6 to 12 months, to prevent these deposits from affecting performance and efficiency.
- Checking the Filter: Many recirculation pumps come with a filter that needs to be cleaned or replaced periodically. A clogged filter can restrict water flow and reduce the system’s overall efficiency, so it should be inspected every few months and cleaned as necessary.
- Inspecting Electrical Connections: Regularly check all electrical connections for signs of wear or damage, as faulty wiring can lead to operational issues or safety hazards. Ensure that all connections are tight and free from corrosion, and replace any frayed wires immediately.
- Testing the System: Periodically test the pump to ensure it operates correctly. This includes checking the flow rate and temperature to ensure that hot water is consistently available when needed. Any irregularities may indicate a need for professional servicing or repairs.
- Lubricating Moving Parts: If the recirculation pump has any moving parts, it’s important to lubricate them as per the manufacturer’s guidelines. Proper lubrication reduces wear and tear, helping to maintain optimal performance and extend the lifespan of the pump.