Waiting for hot water wastes time and water, especially when a bathroom or kitchen is far from the heater. A tankless model with recirculation can shorten that wait, but the right setup depends on your plumbing, fuel, and installation location.
These 10 options include natural gas and propane models, indoor and outdoor units, and different approaches to recirculation. Use the guide below to narrow down what fits your home before comparing individual models.
Best 10 Tankless Water Heaters with Recirculation Pump Picks for 2026
Best for High-Demand Homes
- Up to 11.1 GPM; 199,000 BTU
- Built-in Smart-Circ pump
- Natural gas or propane; indoor or outdoor
Best For: Households with substantial hot-water demand
Best for Leak-Detection Features
- 11 GPM stated flow rate
- Built-in recirculation and Auto-Learn
- Water and gas leak detection
Best For: Indoor natural-gas homes prioritizing leak detection
Best Outdoor Propane Option
- Outdoor propane configuration
- Built-in Smart-Circ pump
- Up to 6.1 GPM in product bullets
Best For: Homes needing an outdoor propane heater
Best Flexible Midrange Choice
- Up to 9 GPM; 160,000 BTU
- Built-in Smart-Circ pump
- Natural gas or propane; indoor or outdoor
Best For: Homes seeking versatile installation and moderate stated flow
Best Indoor Natural Gas Pick
- Indoor natural gas model
- Built-in Smart-Circ pump
- Up to 7.6 GPM; 199,000 BTU
Best For: Higher-demand homes with indoor natural gas installation
Best Indoor Propane Pick
- Indoor propane model
- Built-in Smart-Circ pump
- Up to 6.1 GPM; 160,000 BTU
Best For: Propane homes seeking indoor recirculation
Best Outdoor Natural Gas Pick
- Outdoor natural gas model
- Built-in Smart-Circ pump
- Up to 7.6 GPM; 199,000 BTU
Best For: Higher-demand homes needing outdoor placement
Best with Extra Features
- Outdoor propane model
- Built-in Smart-Circ pump
- Up to 7.6 GPM listed
Best For: Propane homes seeking outdoor installation and higher flow
Best Heavy-Duty Pick
- Indoor natural-gas model
- Built-in Smart-Circ pump
- Up to 6.1 GPM listed
Best For: Natural-gas homes requiring indoor installation
Best Simple Pick
- Outdoor natural-gas model
- Built-in Smart-Circ pump
- Up to 6.1 GPM listed
Best For: Natural-gas homes planning outdoor installation
Best for High-Demand Homes – Rinnai RXP199iN
Among tankless water heaters with recirculation pump, the Rinnai RXP199iN stands out for its stated 11.1 GPM maximum flow and built-in Smart-Circ pump. Its 199,000 BTU condensing design is aimed at homes with substantial hot-water demand.
Best For: Households seeking high flow capacity and usage-based recirculation, with flexibility to install indoors or outdoors.
Pros:
- Smart-Circ learns usage patterns and schedules the internal pump accordingly.
- Supports natural gas or propane and indoor or outdoor installation.
- Rated at 0.98 UEF, with a Quick Flush feature for simplified flushing.
Cons:
- Outdoor installation requires a separate RX-OVC vent cap.
- Wi-Fi control requires a Control-R module that is not included.
This is the higher-output choice here if your household needs the extra stated flow. Have a qualified technician assess installation and expected performance for your water temperature and fixture demand.
Best for Leak-Detection Features – Rheem Prestige RTGH-RH11DVLN
The Rheem Prestige is an indoor natural-gas option among tankless water heaters with recirculation pump. It pairs a stated 11 GPM flow rate with built-in recirculation and water and gas leak detection.
Best For: Natural-gas households wanting high stated flow capacity, usage-based programming, and leak-detection safeguards.
Pros:
- Built-in recirculation helps reduce the wait for hot water.
- Auto-Learn programming tracks usage and schedules around peak demand.
- Water and gas leak detection can shut down the unit and display an error code.
Cons:
- Specified for indoor natural-gas installation, not outdoor or propane use.
- Actual simultaneous-fixture performance depends on incoming water temperature and demand.
Choose this model if its leak-detection features are as important to you as its high stated flow rate. Confirm the installation requirements and expected output with a qualified installer.
Best Outdoor Propane Option – Rinnai REP160eP Smart-Circ
For shoppers comparing tankless water heaters with recirculation pump for an outdoor propane installation, the Rinnai REP160eP offers a built-in pump and Smart-Circ scheduling. Its listed flow rate is up to 6.1 GPM, below the higher-output models in this roundup.
Best For: Homes set up for outdoor propane installation that want usage-based recirculation without the larger models’ stated flow capacity.
Pros:
- Smart-Circ learns water-use patterns to schedule recirculation.
- Outdoor, wall-mounted design keeps the heater outside the home.
- Listed at 160,000 BTU with up to 6.1 GPM flow.
Cons:
- Outdoor propane configuration limits where it fits.
- Wi-Fi control requires a Control-R module that is not included.
This is the most targeted fit here for outdoor propane use. The supplied listing gives conflicting flow figures, so verify the rated flow for the exact model before purchase.
Best Flexible Midrange Choice – Rinnai RXP160iN
The Rinnai RXP160iN is a flexible choice among tankless water heaters with recirculation pump: it has an internal Smart-Circ pump, supports natural gas or propane, and can be installed indoors or outdoors. Its stated maximum flow is 9 GPM.
Best For: Households wanting fuel and installation flexibility without stepping up to the RXP199iN’s stated 11.1 GPM capacity.
Pros:
- Smart-Circ schedules the built-in pump based on learned usage patterns.
- Supports natural gas or propane and indoor or outdoor installation.
- Condensing design is rated at 0.97 UEF and includes Quick Flush.
Cons:
- Outdoor installation requires a separate RX-OVC vent cap.
- Wi-Fi control requires a Control-R module that is not included.
Its main appeal is versatility rather than maximum stated output. Ask a qualified installer whether 9 GPM is suitable for your incoming water temperature and peak hot-water demand.
Best Indoor Natural Gas Pick – Rinnai REP199iN Smart-Circ
Among tankless water heaters with recirculation pump, the Rinnai REP199iN suits homes that want an indoor natural gas unit with substantial output. Its built-in Smart-Circ pump learns water-use patterns and schedules recirculation to help reduce hot-water wait times.
Best For: Households with natural gas that need an indoor heater rated for up to 7.6 GPM.
Pros:
- Built-in recirculation pump with usage-based scheduling.
- Up to 7.6 GPM and 199,000 BTU of heat output.
- Compact, wall-mounted design.
Cons:
- Indoor installation and professional setup are recommended.
- Wi-Fi control requires a separate Controlr module.
This is a strong fit when indoor placement, natural gas, and higher flow capacity are priorities. Actual simultaneous fixture performance depends on your home’s water demand and incoming water temperature.
Best Indoor Propane Pick – Rinnai REP160iP Smart-Circ
For propane households comparing tankless water heaters with recirculation pump, the indoor Rinnai REP160iP offers a built-in option. Smart-Circ learns water-use patterns and schedules recirculation to help shorten the wait for hot water.
Best For: Homes using propane that want an indoor tankless heater rated for up to 6.1 GPM.
Pros:
- Built-in pump with usage-based recirculation scheduling.
- Up to 6.1 GPM and 160,000 BTU of heat output.
- Compact design for indoor placement.
Cons:
- Lower stated flow rate than the two 199,000-BTU models in this roundup.
- Wi-Fi control requires a separately sold Controlr module.
Choose this model if propane compatibility matters more than maximum flow. Rinnai recommends professional installation, and real-world flow depends on incoming water temperature and simultaneous demand.
Best Outdoor Natural Gas Pick – Rinnai REP199eN Smart-Circ
The Rinnai REP199eN stands out among tankless water heaters with recirculation pump for its outdoor natural gas configuration. Its built-in Smart-Circ system learns water-use patterns and schedules the pump to help reduce hot-water wait times.
Best For: Homes that need an outdoor natural gas heater with up to 7.6 GPM of stated output.
Pros:
- Outdoor installation keeps the heater outside the home.
- Built-in pump with usage-based recirculation scheduling.
- Up to 7.6 GPM and 199,000 BTU of heat output.
Cons:
- Not the right configuration if you need an indoor heater.
- Wi-Fi control requires a separate Controlr module.
This is the outdoor counterpart to the higher-output indoor natural gas option. Check your local installation requirements and incoming water temperature when deciding whether its stated flow meets your needs.
Best with Extra Features – Rinnai REP199eP Smart-Circ
For propane households comparing tankless water heaters with recirculation pump options, the outdoor Rinnai REP199eP combines a built-in pump with Smart-Circ scheduling that learns water-use patterns. Its listed output is up to 7.6 GPM, though actual simultaneous use depends on your home’s conditions.
Best For: Homes with propane service that need an outdoor-mounted heater and relatively high hot-water output.
Pros:
- Built-in recirculation pump schedules operation around learned usage patterns.
- Up to 7.6 GPM and a compact, wall-mounted design.
- Limited residential heat-exchanger warranty of 15 years.
Cons:
- Outdoor propane configuration is unsuitable for indoor or natural-gas-only installations.
- Wi-Fi control requires a separate Controlr module; professional installation is recommended.
Choose this model when propane, outdoor placement, and higher listed flow matter most. Confirm expected performance against your groundwater temperature and register promptly if you want the stated labor-warranty terms.
Best Heavy-Duty Pick – Rinnai REP160iN Smart-Circ
Among tankless water heaters with recirculation pump designs, the Rinnai REP160iN suits buyers who need an indoor natural-gas unit. Its built-in Smart-Circ pump learns water-use patterns and schedules recirculation, while the supplied specifications list up to 6.1 GPM.
Best For: Natural-gas homes seeking an indoor, wall-mounted heater with built-in recirculation.
Pros:
- Integrated pump and usage-based Smart-Circ scheduling.
- Compact indoor design with up to 6.1 GPM listed output.
- Limited 15-year residential heat-exchanger warranty.
Cons:
- Not an outdoor or propane model.
- Wi-Fi control needs a separately purchased Controlr module; professional installation is recommended.
This is the indoor counterpart to Rinnai’s outdoor natural-gas option. Check local groundwater temperatures and your household’s simultaneous hot-water demand before relying on the listed flow figure.
Best Simple Pick – Rinnai REP160eN Smart-Circ
If your installation calls for outdoor natural gas, the Rinnai REP160eN is a practical option among tankless water heaters with recirculation pump features. Its built-in Smart-Circ system learns usage patterns to schedule recirculation, and the notes list up to 6.1 GPM.
Best For: Natural-gas households planning an outdoor-mounted tankless installation.
Pros:
- Built-in recirculation pump with usage-based scheduling.
- Outdoor, wall-mounted format keeps the unit outside the home.
- Compact design with up to 6.1 GPM listed output.
Cons:
- Outdoor natural-gas configuration will not suit indoor or propane setups.
- Controlr Wi-Fi module is not included; professional installation is recommended.
Pick this over the indoor REP160iN when outdoor placement fits your installation plan. As with any listed flow rate, compare its output with your groundwater temperature and expected fixture use.
How We Picked the Best Tankless Water Heaters with Recirculation Pump
We focused on gas tankless models that advertise built-in recirculation or recirculation-oriented features. The shortlist covers natural gas and propane, indoor and outdoor installation, and different output classes. We prioritized practical distinctions you can verify before purchase: fuel type, installation rating, hot-water capacity, and the plumbing needed to make recirculation work. Product naming alone cannot confirm that a model will deliver near-instant hot water at every tap.
Quick Comparison of Tankless Water Heaters with Recirculation Pump
For a larger hot-water load: Start with the 199-class models or the Rheem Prestige RTGH-RH11DVLN, then check their published flow rates at your local temperature rise. For a more modest load: Compare the 160-class models; they may be a better fit when simultaneous demand is lower. For propane: Look at the Rinnai REP models ending in P. For natural gas: Consider the models ending in N and the listed Rheem unit. Within the Rinnai REP options, check whether the specific model is rated for indoor or outdoor installation before ordering.
These are shopping shortcuts, not interchangeable specifications. A headline GPM figure is usually measured under particular conditions and can fall when incoming water is cold.
Key Buying Factors for Tankless Water Heaters with Recirculation Pump
Recirculation Plumbing and Controls
Find out whether your home has a dedicated return line. If it does not, ask your installer whether the chosen heater supports a compatible crossover-valve arrangement. Confirm what is included in the box and how the pump runs: on a schedule, in response to learned usage, or by another supported control method. Recirculation can reduce waiting, but frequent operation can increase energy use.
Capacity at Your Temperature Rise
Estimate the fixtures you might use at once, then compare that combined flow with each heater’s performance at the temperature rise your climate requires. Groundwater temperature matters: heating cold inlet water takes more capacity than heating mild inlet water. An installer can also check gas supply and venting requirements.
Fuel and Installation Location
Match the unit to natural gas or propane; they are not freely interchangeable. Indoor models need approved venting and combustion-air arrangements, while outdoor models need a suitable location and freeze-protection planning. Confirm local code requirements, clearances, electrical needs, and condensate drainage where applicable.
Who Should Buy Which Tankless Water Heaters with Recirculation Pump?
Choose a higher-output model if your household regularly runs multiple hot-water fixtures together, subject to the temperature-rise calculation. Choose a 160-class option if measured demand is lower and it meets your peak-use needs. Propane households should narrow the list to compatible P models; natural gas households should compare N models and the Rheem. If your main complaint is a long wait at a distant tap, prioritize recirculation compatibility with your existing plumbing over the largest advertised GPM. Before buying, have a qualified installer verify the exact model number, installation location, and complete recirculation plan.
