The best tankless water heaters with recirculation pump technology can reduce the wait for hot water while delivering efficient, on-demand heating. The right choice depends on fuel type, flow rate, installation layout, and whether the recirculation system is built in or added separately.
We compared high-capacity gas models, smart recirculation systems, and standalone pump kits to help you choose a practical setup for your household and plumbing configuration.
Best 10 Tankless Water Heaters with Recirculation Pump Picks for 2026
Best High-Capacity Pick
- 11.2 GPM output for high demand
- Built-in recirculation and hot-start programming
- EcoNet Wi-Fi control and alerts
Best For: Larger households needing high capacity and smart recirculation
Best Compact Propane Pick
- 7.9 GPM indoor propane performance
- Smart-Circ learns usage patterns
- Compact small-suitcase design
Best For: Propane homes with limited installation space
Best Add-On Pump Kit
- Works with tank and tankless heaters
- Built-in bypass valve and timer
- 10 GPM flow with 21.6-foot lift
Best For: Retrofitting an existing water-heater system
Best Flexible-Fuel Pick
- 11.1 GPM condensing performance
- Smart-Circ internal recirculation pump
- Natural gas or propane; indoor or outdoor
Best For: High-demand homes needing flexible fuel and placement
Best for Easy Setup
A. O. Smith 10 GPM Recirculating Gas Heater
- 10 GPM continuous flow for larger households
- Integrated hot water recirculation pump
- 15-year residential heat-exchanger warranty
Best For: Three- to four-bathroom homes using natural gas
Best Flexible Installation
Rinnai RX199iN Smart Sense Tankless Heater
- 11.1 GPM output for up to seven fixtures
- Supports natural gas or propane
- Indoor-or-outdoor installation flexibility
Best For: High-flow installations needing fuel and placement flexibility
Best Built-In Recirculation
Rheem Prestige 11 GPM Gas Heater
- Built-in recirculation reduces hot-water wait time
- 11 GPM, 199,000 BTU condensing performance
- Auto-Learn programming and leak detection
Best For: Indoor natural-gas tank replacements
Best Propane Pick
- Built-in Smart-Circ recirculation pump
- Up to 6.1 GPM for multiple fixtures
- Outdoor propane design
Best For: Propane homes wanting smart recirculation
Best High-Output Option
- Up to 7.6 GPM for multiple fixtures
- Outdoor natural-gas operation
- LED service reminders and error codes
Best For: Natural-gas homes needing higher flow capacity
Best Indoor Natural-Gas Pick
- Built-in Smart-Circ recirculation pump
- Up to 6.1 GPM capacity
- Compact indoor natural-gas design
Best For: Natural-gas homes needing indoor smart recirculation
Best High-Capacity Pick – Rheem IKONIC 11.2 GPM
The Rheem IKONIC is a strong choice among tankless water heaters with recirculation pump technology for homes that need high flow and convenient control. Its condensing natural-gas design delivers up to 11.2 GPM, while built-in recirculation, hot-start programming, and EcoNet Wi-Fi help reduce wait times and let you manage settings from a mobile device.
Best For: Larger households that want high capacity, built-in recirculation, and app-based monitoring.
Pros:
- Up to 11.2 GPM and 199,900 BTUs for substantial hot-water demand.
- Built-in recirculation can help eliminate the wait at showers and sinks.
- EcoNet Wi-Fi supports temperature, recirculation, usage, and maintenance monitoring.
- Hot-start programming helps reduce cold bursts between back-to-back uses.
Cons:
- Requires a natural-gas installation unless converted for outdoor use with the optional conversion kit.
- Its 86-pound weight may require careful wall mounting.
With high output and a useful combination of recirculation and smart controls, the IKONIC is well suited to demanding whole-home applications. Its compact wall-mounted format adds installation flexibility, but professional planning is still important for gas, venting, and electrical connections.
Best Compact Propane Pick – Rinnai Smart-Circ 7.9 GPM
The Rinnai REP199iP is a compact propane option for shoppers comparing tankless water heaters with recirculation pump features. Its built-in Smart-Circ system learns household usage patterns and schedules circulation accordingly, while the indoor unit provides up to 7.9 GPM for multiple fixtures.
Best For: Propane-powered homes that need a space-saving indoor heater with adaptive recirculation.
Pros:
- Built-in pump and Smart-Circ technology automatically adapt to usage patterns.
- Provides up to 7.9 GPM and 199,000 BTUs.
- Compact size fits spaces where a larger heater may be inconvenient.
- Includes residential warranty coverage of up to 15 years on the heat exchanger when registration requirements are met.
Cons:
- Wi-Fi control requires the separately sold Controlr module.
- Designed for indoor propane installation, limiting fuel and placement options.
- Rinnai recommends professional installation.
This model emphasizes compact installation and automated recirculation rather than app control out of the box. It is a practical fit for propane users, though buyers should confirm regional suitability, installation requirements, and the available warranty terms before purchasing.
Best Add-On Pump Kit – VEVOR Recirculating Pump
The VEVOR recirculating pump is an add-on solution for buyers who already have a water heater and want recirculation without replacing it. It works with tank and tankless systems, includes a bypass valve and timer, and mounts under the faucet farthest from the heater without requiring pipe modifications.
Best For: Homeowners seeking a scheduled recirculation upgrade for an existing tank or tankless system.
Pros:
- Compatible with both tank and tankless water heaters.
- Programmable mechanical timer helps match circulation to daily routines.
- Bypass valve supports whole-home circulation and shuts off when the target temperature is reached.
- Stainless steel pump head and braided hose are designed for corrosion resistance.
Cons:
- This is a separate pump kit, not a complete tankless water heater.
- Mechanical timer control is less flexible than app-based scheduling.
- Installation still requires checking compatibility with the home’s plumbing layout.
For shoppers who want the benefits of tankless water heaters with recirculation pump systems but already own a compatible heater, this kit can be a practical retrofit. Its stated no-pipe-modification installation and included check valve simplify the project, while the 10 GPM flow rating provides substantial circulation capacity.
Best Flexible-Fuel Pick – Rinnai RXP199iN 11.1 GPM
The Rinnai RXP199iN combines high flow with flexible installation for shoppers evaluating tankless water heaters with recirculation pump technology. Its internal Smart-Circ pump learns usage patterns, while Smart Sense supports natural gas or propane operation and Versa Vent allows indoor or outdoor installation with the required outdoor vent cap.
Best For: Households wanting high capacity, fuel flexibility, and indoor-or-outdoor installation options.
Pros:
- Up to 11.1 GPM and 199,000 BTUs for multiple simultaneous fixtures.
- Internal Smart-Circ pump learns usage and schedules recirculation.
- Supports natural gas or propane through the Smart Sense system.
- Offers indoor or outdoor installation with the appropriate Versa Vent components.
Cons:
- Wi-Fi connectivity requires the separately sold Control-R module.
- Outdoor installation requires the RX-OVC vent cap.
- Rinnai recommends qualified professional installation.
The RXP199iN is the most adaptable option in this group for fuel type and placement, while its 11.1 GPM rating suits higher-demand homes. Buyers should account for the required venting components and optional control module when comparing total installation and ownership costs.
Best for Easy Setup – A. O. Smith 10 GPM Recirculating Gas Heater
For households seeking tankless water heaters with recirculation pump capability, the A. O. Smith ATI-540P-N combines 10 GPM of continuous flow with an integrated hot water recirculation pump. Its 199,000 BTU condensing design is sized for homes with three to four bathrooms, depending on climate.
Best For: Larger homes that want natural-gas heating, strong simultaneous flow, and built-in recirculation.
Pros:
- Provides up to 10 GPM of continuous hot water.
- Integrated recirculation pump helps deliver hot water with less waiting.
- Marine-grade 316L stainless steel heat exchanger and a 15-year residential heat-exchanger warranty.
- Supports common venting and Easy-Link connection with compatible units.
Cons:
- The bypass valve needed for some recirculation setups is not included.
- Professional installation by a licensed plumber is recommended.
- Designed for indoor natural-gas installation only.
Choose this model when capacity and recirculation are priorities. Confirm venting, gas, and local installation requirements before purchase, especially if your system needs the separate bypass valve.
Best Flexible Installation – Rinnai RX199iN Smart Sense Tankless Heater
The Rinnai RX199iN is a compact condensing gas heater rated for up to 11.1 GPM and seven fixtures at once. It supports natural gas or propane and can be installed indoors or outdoors with the appropriate Versa Vent components, but its supplied notes do not identify a built-in recirculation pump.
Best For: Buyers who value high flow, fuel flexibility, and indoor-or-outdoor installation options.
Pros:
- Delivers up to 11.1 GPM and 199,000 BTU.
- Smart Sense gas control supports natural gas or propane.
- Compact design, Quick Flush feature, and .98 UEF efficiency rating.
- Offers a 15-year heat-exchanger warranty and five-year parts warranty when applicable registration requirements are met.
Cons:
- A Controlr module is required for Wi-Fi control and is not included.
- Outdoor installation requires the RX-OVC vent cap.
- The supplied information does not list an integrated recirculation pump.
This is a strong high-output option when flexible fuel and placement matter more than having an included recirculation pump. If your priority is tankless water heaters with recirculation pump functionality, verify the intended recirculation setup and accessories before ordering.
Best Built-In Recirculation – Rheem Prestige 11 GPM Gas Heater
The Rheem Prestige RTGH-RH11DVLN is an 11 GPM indoor natural-gas condensing heater with built-in recirculation. Its water- and gas-leak detection, Auto-Learn programming, and water-saving features make it a practical choice for replacing a conventional tank where quicker hot-water delivery is important.
Best For: Indoor natural-gas tank replacements needing built-in recirculation and usage-based programming.
Pros:
- Built-in recirculation helps reduce hot-water waiting and waste.
- Provides up to 11 GPM at 199,000 BTU.
- Auto-Learn programming tracks usage and adjusts for peak demand.
- Leak detection can shut down the unit and display an error code.
Cons:
- Listed for indoor natural-gas installation, limiting placement flexibility.
- The supplied warranty details include five years on parts and one year of labor, with heat-exchanger coverage varying by application.
- Professional installation is likely needed for gas, venting, and recirculation connections.
With built-in recirculation and an 11 GPM rating, this Rheem is especially well suited to tank replacements where minimizing wait time and water waste are central goals. Review the warranty terms for your intended residential or commercial use.
Best Propane Pick – Rinnai REP160eP Smart-Circ
For shoppers comparing tankless water heaters with recirculation pump features, the Rinnai REP160eP combines propane power with built-in Smart-Circ technology. Its learning-based scheduling is designed to reduce hot-water wait times while supporting efficient operation, and the outdoor unit delivers up to 6.1 GPM.
Best For: Homes that use propane and want an outdoor tankless heater with built-in smart recirculation.
Pros:
- Built-in recirculation pump with Smart-Circ scheduling that learns usage patterns.
- Up to 6.1 GPM, rated for as many as five fixtures at once.
- Compact outdoor design with a 15-year heat-exchanger warranty and 5-year parts and labor coverage, subject to registration terms.
Cons:
- Propane-powered, so it is not the right fuel option for natural-gas homes.
- Wi-Fi control requires the separately available Controlr module.
- Professional installation is recommended.
The REP160eP is a strong fit when built-in recirculation and propane compatibility matter more than indoor installation. Verify ground-water conditions, fuel availability, and local installation requirements before choosing it.
Best High-Output Option – Rinnai RE199eN Non-Condensing
The Rinnai RE199eN is an outdoor natural-gas tankless water heater suited to higher-demand households. It provides up to 7.6 GPM according to the supplied product information, while its improved layout and LED display are designed to simplify installation service and maintenance. Unlike the Smart-Circ models in this roundup, the built-in pump is not included; Rinnai identifies the REP199eN as the pump-equipped alternative.
Best For: Natural-gas households prioritizing higher flow capacity and a service-friendly outdoor design.
Pros:
- Up to 7.6 GPM, supporting as many as six fixtures at once.
- Heats water only when necessary to help conserve energy.
- LED screen provides service reminders and error codes.
Cons:
- Does not include the built-in recirculation pump; the pump-equipped REP199eN is the comparable alternative.
- Outdoor installation may not suit homes requiring an indoor unit.
- Professional installation is recommended.
If your priority is flow capacity rather than integrated recirculation, the RE199eN offers a practical natural-gas option. If reducing hot-water wait times with a built-in pump is essential, compare it with Rinnai’s Smart-Circ models instead.
Best Indoor Natural-Gas Pick – Rinnai REP160iN Smart-Circ
The Rinnai REP160iN brings built-in Smart-Circ recirculation to an indoor natural-gas tankless water heater. It learns household water-use patterns and schedules recirculation accordingly, while its 6.1 GPM capacity is designed to serve up to five fixtures at once in a compact wall-mounted format.
Best For: Natural-gas homes that need an indoor installation with integrated smart recirculation.
Pros:
- Built-in pump and Smart-Circ technology help reduce hot-water wait times.
- Provides up to 6.1 GPM for as many as five fixtures at once.
- Compact indoor design with a 15-year heat-exchanger warranty and 5-year parts and labor coverage, subject to registration terms.
Cons:
- Natural-gas model, so it is not compatible with propane service.
- Wi-Fi control requires the separately available Controlr module.
- Professional installation is recommended.
Choose the REP160iN when indoor placement and built-in recirculation are both important. Its output is best matched to moderate-to-high residential demand, so confirm fixture needs and local installation requirements before buying.
How We Picked the Best Tankless Water Heaters with Recirculation Pump Options
We focused on models and systems that address the main reasons buyers choose recirculation: shorter waits, reduced water waste, and consistent delivery at multiple fixtures. Our comparison considers rated flow, maximum input, condensing versus non-condensing design, fuel compatibility, indoor installation requirements, controls, and whether the pump is integrated or purchased separately.
Because performance depends on incoming-water temperature, pipe length, and simultaneous demand, published gallons-per-minute ratings are useful for comparison but should not be treated as guaranteed output in every home. We also included a standalone recirculation pump kit for households that already have a compatible tankless heater or want to upgrade an existing plumbing system.
Quick Comparison
- Best for integrated recirculation: Choose a tankless model with a built-in pump and dedicated controls when you want a cleaner, more coordinated installation.
- Best for smart scheduling: Smart-Circ and similar systems can use timers or demand-based controls to limit unnecessary circulation.
- Best for high demand: Models near 11 GPM and 199,000 BTU are better suited to larger households, but only when the gas supply, venting, and water conditions support that output.
- Best for an existing heater: A compatible external pump kit may provide recirculation without replacing the water heater.
Key Buying Factors for Tankless Water Heaters with Recirculation Pump Systems
Fuel Type and Installation
Match natural gas or propane to your available service. Indoor gas units also require suitable venting, combustion air, condensate management for condensing models, and professional installation in many locations. Verify local codes before purchase.
Flow Rate and Household Demand
Estimate how many showers, sinks, appliances, or fixtures may run together. A high GPM rating does not eliminate temperature-rise limits, so check the manufacturer’s performance chart for your incoming-water temperature.
Built-In Versus External Recirculation
Built-in pumps simplify system matching and may support scheduled or demand-based operation. External pumps can be more flexible and cost-effective for an existing heater, but compatibility with the heater, return piping, bypass valve, and controls must be confirmed.
Efficiency and Operating Costs
Condensing models generally recover more heat from exhaust gases and can offer higher efficiency, though they may require additional drainage and different venting. Compare installation complexity, maintenance, and fuel costs rather than relying on efficiency alone.
Who Should Buy Which Tankless Water Heaters with Recirculation Pump?
Large or busy households should prioritize adequate flow, strong temperature-rise performance, and a reliable recirculation strategy. Homeowners replacing an existing gas heater should first confirm fuel, venting, gas-line capacity, and connection requirements. Buyers seeking convenience may prefer a built-in pump with timer or smart controls. Budget-conscious upgraders can consider an external pump kit if their current heater and plumbing layout are compatible.
Before ordering, verify dimensions, venting materials, gas type, electrical requirements, warranty terms, and service availability. A qualified installer can also determine whether a dedicated return line or a bypass configuration is appropriate for your home.