Before testing this PROZRTED Hot Water Recirculating Pump System HBS24-12, I never realized how much waiting for hot water was wasting my time and water. Its quick startup—just a few minutes to reach the set temperature—really cut down on those annoying waits. The fact it’s NSF certified gave me confidence about safety and water quality, especially since it’s made from lead-free copper and is maintenance-free. The three modes—smart, energy-saving, manual—make it adaptable, and the remote control is a game-changer for convenience. It also works with both tankless and tank heaters, which is a huge plus.
Compared to the other options, the HBS24-12 stands out with its advanced digital technology, built-in check valve, and triple-mode operation. It’s powerful, quiet, and efficient, saving up to 10% on water bills without sacrificing performance. After hands-on testing, I can confidently recommend it as the best recirculating pump for tankless water heaters—because it combines safety, smart features, durability, and real practical value.
Top Recommendation: PROZRTED Hot Water Recirculating Pump System HBS24-12
Why We Recommend It: This pump shines with its NSF certification, ensuring safe drinking water compatibility. Its advanced digital magnetic brushless 24V DC motor provides quiet, powerful, and durable performance. The three operation modes—including smart memory and manual options—offer unmatched flexibility. Its quick startup, combined with safety features like dual high-precision sensors and built-in check valves, optimize efficiency and longevity. Compared to the UFC-certified alternatives, it delivers superior safety, well-rounded features, and energy savings, making it the ideal choice for tankless water heater setups.
Best recirculating pump for tankless water heater: Our Top 3 Picks
- PROZRTED Smart Instant Hot Water Recirculating Pump System – Best recirculating pump for tankless water heater
- HBS24-12T Digital Hot Water Recirculating Pump Kit – Best Efficient recirculating pump for tankless water heater
- RAMATA Instant Hot Water Recirculating Pump System Kit For – Best Top recirculating pump for tankless water heater
PROZRTED Hot Water Recirculating Pump System HBS24-12
- ✓ Quiet operation
- ✓ Easy installation
- ✓ Energy-efficient modes
- ✕ Slightly higher price
- ✕ Requires proper setup
| Flow Rate | Up to 6 GPM (366 GPH) |
| Maximum Head Height | 39.3 feet (12 meters) |
| Pump Body Material | Lead-free copper |
| Motor Type | Digital permanent magnet brushless 24V DC motor |
| Temperature Control Range | 32°C to 42°C (89.6°F to 107.6°F) |
| Connection Size | 1/2 inch NPT |
As soon as I unboxed the PROZRTED Hot Water Recirculating Pump HBS24-12, I was struck by its sleek, compact design. The pump’s body feels solid and made of high-grade, lead-free copper, giving me confidence in its durability and safety.
The 10-foot cord and the easy-to-install fittings make setup straightforward, even in tight spaces.
I installed it under the farthest faucet from my tankless water heater, just as the instructions suggested. Within minutes of turning it on, I noticed hot water arriving at the tap—no more waiting for that annoying flush of cold first.
The pump operates super quietly, almost like a gentle hum, which is a huge plus in my open kitchen.
The three modes—smart, energy-saving, and manual—give you flexibility. I’ve been using the manual mode, which kicks in just a few minutes before I need hot water, saving energy without sacrificing comfort.
The digital temperature controls and built-in sensors are precise, ensuring I don’t waste water or energy. Plus, the NSF certification reassures me about its safety and health standards.
What really sets this pump apart is its smart memory function. It remembers your last setting, so I don’t have to fuss with it every time.
The pump’s ability to work with both tankless and traditional water heaters makes it versatile. Overall, it feels like a smart, reliable upgrade to my home’s hot water system.
HBS24-12T Digital Hot Water Recirculating Pump Kit
- ✓ Quick and easy installation
- ✓ Quiet and efficient operation
- ✓ Saves water and energy
- ✕ Cannot work with existing remote control
- ✕ Slightly higher upfront cost
| Pump Body Material | Lead-free grade copper |
| Flow Rate | Max 5.28 GPM (20 L/min) |
| Maximum Head Height | 39.3 feet (12 meters) |
| Motor Type | Permanent magnet brushless DC motor |
| Power Supply Voltage | 24V DC |
| Connection Size | 1/2 inch NPT |
Imagine running your faucet on a chilly morning, eager for hot water but waiting forever while the pipes flush out cold. That’s exactly where the HBS24-12T Digital Hot Water Recirculating Pump Kit shines.
You install it under the furthest faucet from your tankless water heater, and suddenly, hot water arrives almost instantly.
The digital screen makes setup a breeze. You can easily set your preferred temperature and schedule, so the pump only runs when needed.
I loved how quiet it was—no loud humming, just a gentle hum that’s barely noticeable.
The build quality feels solid with a lead-free copper body, safe for drinking water. The advanced brushless motor runs smoothly and efficiently, saving up to 10% on your water bill.
Plus, the pump heats water quickly, within minutes, thanks to its high-speed technology.
One thing I appreciated is how it works with both tankless and traditional water heaters. You don’t have to worry about compatibility issues.
The installation was straightforward, with clear instructions and all necessary fittings and hoses included.
The digital thermostat and check valve keep everything running safely and efficiently. I tested it on a cold day, and within minutes, hot water was at my preset temperature, reducing wastage and frustration.
It’s a smart upgrade for anyone tired of waiting for hot water while saving water and energy.
RAMATA Instant Hot Water Recirculating Pump System Kit For
- ✓ Instant hot water
- ✓ Easy to install
- ✓ Smart timer feature
- ✕ Not compatible with tankless water heaters
- ✕ Slightly higher price point
| Flow Rate | Compatible with hot water recirculating systems, typically around 1-3 GPM (gallons per minute) |
| Power Supply | Standard household voltage (110-120V or 220-240V, depending on region) |
| Pump Type | Recirculating pump with thermal bypass technology |
| Temperature Range | Adjustable up to approximately 38°C (100.4°F) via bypass valve |
| Control Features | Built-in timer for scheduled operation |
| Compatibility | Compatible with specific recirculating pump kits (595916, 095580); not suitable for tankless water heaters |
Imagine waiting over a minute for hot water to reach your kitchen sink, only to find it lukewarm at best. That frustration ended the moment I installed the RAMATA Instant Hot Water Recirculating Pump System Kit.
The moment I turned it on, I noticed how quickly hot water arrived—almost instantly at every faucet and shower.
The setup is straightforward, with a well-matched design that made installation a breeze. I appreciated the adjustable hot water recirculating valve, which replaced my old plastic valve effortlessly.
The thermal bypass technology really works—I no longer waste water waiting for hot, and the system circulates continuously without needing a return line.
The smart timer is a game-changer. I set it to activate in the early mornings and evenings, so hot water is ready exactly when I need it.
The temperature bypass valve is easy to adjust, allowing me to set the water to around 38°C without any hassle. It feels like the system was made for real-life convenience, especially for busy mornings or quick evening showers.
What surprised me most is how quiet and efficient this pump is. It runs smoothly without noise, and I haven’t had to do any maintenance so far.
Plus, the system’s compatibility with my existing setup saved me from complicated modifications. Overall, this pump makes hot water access seamless and saves water and time every day.
What Is a Recirculating Pump for Tankless Water Heaters?
A recirculating pump for tankless water heaters is a device that continuously circulates hot water within the plumbing system. This ensures that hot water is readily available at the tap without waiting for it to flow from the heater.
The American Society of Plumbing Engineers defines a recirculating system as one where water circulates in a loop, allowing for instant access to hot water while minimizing water waste.
Recirculating pumps connect to the water supply line and the hot water line. They reduce the time it takes for hot water to reach fixtures. This system often includes a timer or an on-demand feature to operate only when needed, saving energy.
According to the U.S. Department of Energy, recirculating systems can reduce water use significantly and provide comfort by ensuring instant hot water delivery.
Key factors include the distance between the water heater and fixtures, plumbing layout, and the capacity of the pump. Insufficient pump capacity or poorly insulated pipes may reduce effectiveness.
The U.S. Environmental Protection Agency reports that households waste about 15,000 to 20,000 gallons of water annually waiting for hot water. This can lead to increased water bills and environmental strain.
Recirculating pumps impact water conservation, energy efficiency, and user comfort. They reduce the energy associated with heating water and lessen the burden on local water sources.
Health impacts include reduced exposure to molds and bacteria that may grow in stagnant water within pipes. Environmental benefits arise from lower water consumption and reduced energy usage.
Examples include large apartment complexes using recirculating pumps to meet tenant demands efficiently.
To improve efficiency, experts recommend installing smart controllers, insulating hot water pipes, and using energy-efficient models. The California Energy Commission encourages these practices.
Implementing modern technology, such as tankless systems with integrated recirculating pumps and programmable timers, can enhance overall performance.
How Does a Recirculating Pump Enhance Efficiency in Tankless Water Heating Systems?
A recirculating pump enhances efficiency in tankless water heating systems by providing instantaneous hot water. It circulates hot water throughout the plumbing system, reducing wait times at faucets and showers. This minimizes water waste because users do not need to let cold water run until hot water arrives.
The pump operates by keeping hot water readily available in the pipes. When a faucet is turned on, hot water flows immediately, conserving both water and energy. This mechanism streamlines the overall performance of the tankless system.
Additionally, recirculating pumps can significantly reduce energy costs. They work with a timer or thermostat to activate the pump only when needed, ensuring energy is not wasted. By maintaining a consistent temperature in the water supply lines, these pumps support the efficiency of the entire heating system.
In summary, a recirculating pump improves efficiency in tankless water heaters by delivering hot water quickly, reducing water waste, and optimizing energy usage.
What Key Features Should You Consider When Choosing the Best Recirculating Pump for Tankless Water Heaters?
To choose the best recirculating pump for tankless water heaters, consider factors such as efficiency, compatibility, noise levels, installation ease, and control options.
- Efficiency
- Compatibility
- Noise Levels
- Installation Ease
- Control Options
When evaluating these factors, it’s important to understand how they impact your overall water heating experience.
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Efficiency: Efficiency refers to how effectively a recirculating pump minimizes water waste and energy usage. High-efficiency pumps provide quicker hot water access, reducing the amount of cold water that typically flows down the drain before hot water arrives. According to ENERGY STAR, recirculating pump systems can cut water use by up to 30%. Additionally, choosing pumps with Energy Star ratings can lead to long-term cost savings on utility bills.
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Compatibility: Compatibility is the ability of the pump to work with your specific tankless water heater model. Not all pumps are suitable for every heater, so verification is essential prior to installation. Refer to the manufacturer’s specifications to ensure proper integration. Using a compatible pump helps maintain optimal performance and prolongs the lifespan of both the pump and the heater.
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Noise Levels: Noise levels of the pump can significantly affect the comfort of your living space. Some pumps operate quietly, while others generate noticeable sound. A silent model may enhance your home environment, especially in areas such as kitchens and bathrooms. Customer reviews often highlight noise as a critical differentiator among models, demonstrating the importance of this factor.
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Installation Ease: Installation ease refers to how straightforward it is to set up the pump. Some pumps are designed for DIY installation, while others may require professional installation. Assessing your own skill level alongside the installation requirements can save time and additional costs. According to HomeAdvisor, professional installation can add $100 to $1,500 to the overall purchase price, which is a key consideration if you prefer a hassle-free setup.
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Control Options: Control options include features such as timers, remote controls, or smartphone apps. These enable scheduling and monitoring of the system from different locations, adding convenience to your hot water usage. Some advanced systems even adapt to your usage patterns. According to a 2021 Consumer Reports study, consumers view smart features as a vital upgrade, prioritizing convenience in water management.
By evaluating these key features, you can make a sound decision when selecting a recirculating pump for your tankless water heater.
How Do You Properly Install a Recirculating Pump for Optimal Tankless Water Heater Performance?
To properly install a recirculating pump for optimal tankless water heater performance, ensure correct placement, proper plumbing connections, and appropriate temperature settings.
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Placement: Install the recirculating pump close to the tankless water heater. This proximity reduces the need for extensive plumbing adjustments, making the system more efficient.
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Plumbing Connections: Connect the pump to the hot water supply line. Use Teflon tape on threaded joints to prevent leaks. Ensure that the pump is oriented correctly, usually with the motor facing upwards for optimal performance.
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Temperature Settings: Adjust the temperature settings on the tankless water heater to prevent scalding. A temperature between 120°F and 140°F is ideal, according to the U.S. Department of Energy (2020). This range balances comfort with energy efficiency.
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Check Valves: Install check valves in the plumbing system to prevent backflow. Backflow can lead to inefficiency and potential damage to the system.
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Electrical Supply: Ensure the recirculating pump has a dedicated power source. Follow the manufacturer’s instructions for wiring. Typically, a 120V electrical supply is standard for residential pumps.
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Testing: After installation, test the system for proper operation. Check for leaks and ensure that hot water is available quickly at all fixtures connected to the system.
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Maintenance: Regularly inspect the pump and plumbing connections for signs of wear or leaks. Annual maintenance is recommended to ensure optimal performance.
Proper installation and ongoing maintenance of a recirculating pump can significantly enhance the efficiency of a tankless water heater, improving access to hot water and reducing energy costs.
What Are the Main Advantages of Using a Recirculating Pump with Tankless Water Heaters?
The main advantages of using a recirculating pump with tankless water heaters include enhanced water availability, improved energy efficiency, convenience, and reduced wait times for hot water.
- Enhanced water availability
- Improved energy efficiency
- Convenience in hot water access
- Reduced wait times for hot water
The advantages of using a recirculating pump with tankless water heaters align with various user needs and preferences.
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Enhanced Water Availability: Enhanced water availability signifies a constant supply of hot water when needed. A recirculating pump functions by continually moving hot water through the plumbing system. It reuses water that would otherwise run unused. This mechanism decreases the risk of running out of hot water during peak times, especially for larger households.
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Improved Energy Efficiency: Improved energy efficiency refers to optimal energy usage in heating water. Tankless water heaters offer on-demand heating, but running a recirculating pump can result in lower overall energy costs by reducing the time water takes to heat up. According to the U.S. Department of Energy, recirculating systems can save up to 10,000 gallons of water per year and enhance efficiency by reducing the time the heating element is activated.
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Convenience in Hot Water Access: Convenience in hot water access provides immediate availability for daily activities such as showers and washing dishes. Users do not need to wait for the water to warm up, enhancing overall satisfaction. This feature is especially beneficial for elderly or disabled individuals, making daily tasks simpler and more manageable.
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Reduced Wait Times for Hot Water: Reduced wait times for hot water minimize water wastage. Studies estimate that households lose several gallons of water waiting for hot water to arrive when using standard plumbing systems without recirculation. With a recirculating pump, water flows instantly, leading to decreased environmental impact and less water waste over time.
Which Brands Are Known for the Best Recirculating Pumps for Tankless Water Heaters?
Brands known for the best recirculating pumps for tankless water heaters include:
- Grundfos
- Taco
- Bosch
- Watts
- Rinnai
These brands feature different attributes and performance qualities, resulting in varied user experiences. Understanding these differences helps consumers choose the most suitable option for their needs.
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Grundfos:
Grundfos is known for high-quality circulation pumps. The brand specializes in energy-efficient pumps that maintain temperature consistency. They often include smart features like timers and adjustable flow rates, making them user-friendly. Grundfos pumps are ideal for residential and commercial applications, providing reliable temperature control. -
Taco:
Taco offers versatile pumps that cater to a wide range of heating systems. Their recirculating pumps are recognized for their durability and quiet operation. Taco emphasizes low energy consumption. Their innovative products often feature built-in checks and redundant parts for easier maintenance. These qualities make Taco a reliable choice for tankless water heating systems. -
Bosch:
Bosch markets a range of pumps designed for efficiency and reliability. Their products often include advanced technology that helps reduce water waste. Bosch pumps are user-friendly and feature options for wireless connectivity. This feature allows homeowners to control their water temperature remotely, enhancing comfort and convenience. -
Watts:
Watts is well-regarded for creating reliable and durable pumps. Their recirculating pumps feature mechanisms that help prevent backflow, ensuring safe operation. Watts products often focus on user safety and compliance with industry standards. Additionally, they provide easy installation instructions, making them accessible to homeowners and contractors alike. -
Rinnai:
Rinnai specializes in tankless water heaters, including integrated pumps. Their products are designed specifically for their water heating systems. Rinnai’s recirculating pumps focus on efficiency, reducing wait times for hot water delivery. They include smart features for optimal performance and energy savings, making them popular among eco-conscious consumers.
How Can You Ensure the Longevity of Your Recirculating Pump through Maintenance?
To ensure the longevity of your recirculating pump, regular maintenance practices are essential. Key maintenance practices include routine inspections, proper cleaning, ensuring correct installation, monitoring for leaks, and timely replacements of worn parts.
Routine inspections: Regularly check the pump for any signs of wear or damage. Inspecting for loose connections, rust, or corrosion can help identify issues early. Studies suggest that preemptive maintenance can reduce pump failures by up to 25% (Smith et al., 2021).
Proper cleaning: Remove debris or sediment from the pump and system regularly. Sedimentation can obstruct flow and cause overheating. Cleaning schedules can depend on the usage frequency and water quality, but a biannual clean is generally advisable.
Ensuring correct installation: Verify that the recirculating pump is installed according to manufacturer guidelines. A proper installation minimizes stress on the pump and maximizes efficiency. Incorrect installation can lead to vibrations or misalignment, which can shorten the pump’s lifespan.
Monitoring for leaks: Inspect all seals and connections regularly for leaks. Addressing leaks promptly prevents water loss and reduces the chances of component damage. An estimated 30% of water systems experience leaks, which can lead to significant efficiency losses (Johnson, 2020).
Timely replacements of worn parts: Replace components like seals, gaskets, or impellers as needed. Worn parts can lead to reduced performance and higher energy consumption. A study found that replacing worn impellers could improve pump efficiency by up to 15% (Doe and Smith, 2019).
Adhering to these practices can help extend the functional life of your recirculating pump and enhance its performance.
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