Choosing commercial tankless water heaters for laundromats is about more than just high BTUs. You need steady hot water, fast recovery, and a system that can handle repeated wash cycles without temperature swings.
This roundup focuses on the models most likely to fit real laundromat demands, from compact gas units to higher-output commercial options and electric alternatives where service capacity allows.
Best 10 Commercial Tankless Water Heaters for Laundromats Picks for 2026
Commercial Hybrid Pick
Rinnai CXP160iN Smart Sense Commercial Tankless
- Natural gas or propane support
- Up to 9 GPM with recirculation pump
- Compact condensing design with UEF .97
Best For: Laundromats needing flexible fuel options and a space-saving commercial unit
Scale-Resistant Performer
A. O. Smith ATI-310CX3 Indoor 190K BTU
- Up to 8.0 GPM continuous flow
- X3 Scale Prevention Technology
- Field-convertible natural gas or propane
Best For: Laundromats needing strong output and built-in scale resistance
Outdoor Value Choice
FOGATTI 5.1 GPM Propane Outdoor Tankless
- Compact outdoor propane unit
- 5.1 GPM with ±1°F control
- CSA certified with safety features
Best For: Smaller laundromats needing an outdoor propane unit
Heavy-Duty Tank Option
AO Smith BTR-199 Commercial Gas Tank
- 81-gallon commercial tank design
- Electronic ignition with ASME rating
- Natural gas unit with handhole cleanout
Best For: Operators comparing tank-style commercial hot-water storage
Smart Recirculation Pick
Rinnai RXP199iN 11.1 GPM Condensing Tankless
- 11.1 GPM output for high-demand service
- Built-in Smart-Circ recirculation
- Indoor/outdoor flexibility with gas operation
Best For: Laundromats needing strong hot-water capacity and reduced wait time
Electric Upgrade Option
Stiebel Eltron Tempra 36 Plus 36kW
- 36kW electric tankless design
- Advanced Flow Control technology
- Compact wall-mount, 240V hardwired
Best For: Smaller hot-water needs or locations without gas service
Commercial Gas Workhorse
Rinnai CU160iN 9 GPM Condensing
- 9 GPM commercial hot-water flow
- Circ-Logic recirculation and Wi-Fi monitoring
- Condensing, space-saving natural gas design
Best For: Laundromats wanting a dependable commercial gas tankless heater
High-Power Electric Pick
Rheem RTEX-36 36kW Electric Tankless Water Heater
- 36kW output with up to 6 GPM flow rate
- External adjustable temperature control
- Wall-mounted compact design
Best For: Smaller laundromats needing a compact electric tankless unit
High-Flow Gas Option
Noritz NR98SVNG 7.5 GPM Gas Tankless Water Heater
- Up to 9.8 GPM reported flow rate
- Commercial grade copper heat exchanger
- Indoor/outdoor installation flexibility
Best For: Busy laundromats wanting higher-flow natural gas performance
Smart High-Capacity Choice
36kW WiFi Electric Tankless Water Heater 8.7 GPM
- Up to 8.7 GPM flow rate
- WiFi remote control with self-modulating tech
- ETL certified with multiple safety protections
Best For: Laundromats with strong electrical service and app control needs
Commercial Hybrid Pick – Rinnai CXP160iN Smart Sense Commercial Tankless
For laundromats comparing commercial tankless water heaters for laundromats, the Rinnai CXP160iN stands out for flexible gas support, compact wall-mount sizing, and a high-efficiency condensing design. It is built to deliver endless hot water while helping save valuable floor space, which matters when peak wash demand hits and equipment rooms are tight.
Best For: Laundromats that want a compact commercial unit with indoor/outdoor flexibility and smart recirculation.
Pros:
- Supports natural gas or propane with Smart Sense gas control
- Compact commercial design delivers up to 9 GPM and endless hot water
- Built-in recirculation pump with Smart-Circ scheduling
- High UEF .97 and Quick Flush feature for easier maintenance
Cons:
- Professional installation is recommended
- Outdoor installation requires the RX-OVC vent cap
- Wi-Fi control needs the separately sold Controlr module
Overall, this is a strong fit for operators who want commercial-grade hot water support in a compact footprint. Its efficiency and recirculation features make it especially appealing where steady demand and space savings both matter.
Scale-Resistant Performer – A. O. Smith ATI-310CX3 Indoor 190K BTU
When shopping for commercial tankless water heaters for laundromats, scale control and consistent flow can be just as important as raw output. The A. O. Smith ATI-310CX3 offers up to 8 GPM, 190K BTU, and X3 Scale Prevention Technology, making it a practical choice for sites that want reliable indoor hot water with reduced maintenance demands.
Best For: Laundromats that want a high-output indoor tankless unit with built-in scale prevention.
Pros:
- Up to 8.0 GPM continuous flow
- X3 Scale Prevention Technology helps reduce scale buildup
- Up to .81 UEF with integrated temperature controls
- Field convertible from natural gas to propane with included kit
Cons:
- Professional installation is recommended
- Indoor install only
- Concentric vent system required for installation planning
This model makes sense for laundromats that prioritize dependable output and lower upkeep. Its scale prevention and commercial-grade copper heat exchanger help support long-term performance in a busy hot-water environment.
Outdoor Value Choice – FOGATTI 5.1 GPM Propane Outdoor Tankless
For smaller commercial setups evaluating commercial tankless water heaters for laundromats, the FOGATTI outdoor propane model offers a compact footprint, 5.1 GPM flow, and precise temperature control. It is aimed at efficient on-demand hot water service, with an outdoor-friendly design that can simplify placement when indoor mechanical space is limited.
Best For: Smaller laundromats or auxiliary wash areas that need an outdoor propane tankless option.
Pros:
- Compact outdoor design with easy installation
- 5.1 GPM and 120,000 BTU output for on-demand hot water
- Water servo technology keeps temperature within ±1°F
- CSA certified with multiple safety features and 2-year full unit coverage
Cons:
- Propane only
- Best used below 2000 feet altitude
- Requires draining in freezing conditions or long idle periods
This is a practical option when you want decent output without a large equipment footprint. Its precision control and outdoor installation support make it a useful fit for simpler, lower-volume hot water needs.
Heavy-Duty Tank Option – AO Smith BTR-199 Commercial Gas Tank
Not every laundry operation needs a tankless setup, but this commercial gas model is worth comparing if you are reviewing commercial tankless water heaters for laundromats and want to understand alternative hot-water capacity. The AO Smith BTR-199 is a tank-type commercial natural gas heater with a large 81-gallon capacity, electronic ignition, and ASME-rated construction.
Best For: Operators considering a commercial tank-style alternative with large stored hot-water capacity.
Pros:
- Large 81-gallon capacity for stored hot water
- Commercial natural gas design with electronic ignition
- CSA certified and ASME rated
- Includes handhole cleanout and T&P relief valve
Cons:
- Tank-type unit, not tankless
- Large footprint compared with wall-mounted tankless options
- Limited 3-year warranty
If your priority is high stored volume rather than endless on-demand heating, this model offers a very different approach. It is best viewed as a commercial benchmark for facilities that may need tank capacity instead of a tankless configuration.
Smart Recirculation Pick – Rinnai RXP199iN 11.1 GPM Condensing Tankless
If you’re comparing commercial tankless water heaters for laundromats, the Rinnai RXP199iN stands out for high output and built-in recirculation. It delivers up to 11.1 GPM, uses a Smart Sense gas control system, and can be installed indoors or outdoors with the proper venting accessories.
Best For: Laundromats that want a high-capacity gas unit with faster hot water availability and flexible install options.
Pros:
- Up to 11.1 GPM, with capacity for multiple fixtures at once
- Built-in Smart-Circ recirculation helps reduce hot-water wait time
- Indoor or outdoor installation support with Versa Vent system
- High UEF .98 efficiency and Quick Flush feature
Cons:
- Outdoor installation requires the RX-OVC vent cap
- Professional installation is recommended
- Wi-Fi control requires the separate Control-R module
This is the strongest fit in the group for laundromats that need a powerful gas-fired tankless unit and value recirculation convenience. It’s compact for the output it provides, but the install requirements mean it’s best handled as a planned commercial upgrade.
Electric Upgrade Option – Stiebel Eltron Tempra 36 Plus 36kW
For buyers researching commercial tankless water heaters for laundromats, the Stiebel Eltron Tempra 36 Plus is an electric alternative with advanced flow control and a compact wall-mount design. It runs on 240V hard wiring, draws 150A, and is rated up to 1.5 GPM, so it suits smaller-demand hot-water applications rather than high-volume laundry service.
Best For: Laundromats with limited hot-water demand or as a compact electric option where gas isn’t available.
Pros:
- Electric tankless design with 36kW output
- Advanced Flow Control helps manage performance
- Wall-mounted and relatively lightweight at 19 pounds
- Eco design aims at energy and cost savings
Cons:
- Only 1.5 GPM flow rate, far below gas commercial units
- Requires 240V hard wiring and 150A draw
- Refurbished unit, not a new-in-box product
This is the least directly suited to high-throughput laundromat use, but it can still make sense in smaller or secondary hot-water setups. Its biggest strengths are simplicity, compact size, and electric-only operation, not raw flow capacity.
Commercial Gas Workhorse – Rinnai CU160iN 9 GPM Condensing
Rinnai CU160iN Commercial Natural Gas Condensing Tankless Water Heater, Indoor Installation, 9 GPM
Check Price On AmazonAmong commercial tankless water heaters for laundromats, the Rinnai CU160iN is a practical gas option built for efficient, on-demand hot water. It offers a 9 GPM flow rate, condensing design, multiple venting options, and Circ-Logic recirculation technology for better day-to-day performance.
Best For: Laundromats that want a commercial gas tankless heater with solid flow and monitoring features.
Pros:
- 9 GPM flow rate supports steady commercial use
- Condensing, space-saving design helps conserve energy
- Circ-Logic recirculation matches typical usage patterns
- Wi-Fi monitoring adds convenience for oversight
Cons:
- Professional installation is recommended
- Indoor installation only
- Lower flow than higher-capacity models in the roundup
This model makes sense when you want a commercial-grade natural gas unit with a manageable footprint and built-in recirculation logic. It is less about maximum output and more about dependable performance with useful efficiency and monitoring tools.
High-Power Electric Pick – Rheem RTEX-36 36kW Electric Tankless Water Heater
Rheem RTEX-36 36kW Electric Tankless Water Heater 240V Ext Adj Temp Ctrl Bot 3/4 in. Npt Con
Check Price On AmazonFor commercial tankless water heaters for laundromats, the Rheem RTEX-36 is a compact electric option that delivers up to 36kW of on-demand hot water with a reported flow rate of 6 GPM. Its wall-mounted design, external adjustable temperature control, and 240V operation make it a practical fit where space is tight and consistent hot water is needed.
Best For: Smaller laundromats or utility areas that want a compact electric tankless unit with simple temperature adjustment.
Pros:
- 36kW output with up to 6 GPM flow rate
- External adjustable temperature control for easier setup
- Wall-mounted, compact design saves floor space
- Energy efficient with digital temperature control
Cons:
- Electric-only setup requires proper 240V power availability
- 6 GPM may be limiting for heavier multi-machine demand
- Best suited to installations that can support the electrical load
This Rheem model is strongest as a space-saving electric solution when you need reliable hot water without a storage tank. For laundromats, the main question is whether your electrical infrastructure can support the unit and whether 6 GPM matches your peak demand.
High-Flow Gas Option – Noritz NR98SVNG 7.5 GPM Gas Tankless Water Heater
Among commercial tankless water heaters for laundromats, the Noritz NR98SVNG stands out for natural gas operation and a higher reported flow rate up to 9.8 GPM. It uses a commercial grade copper heat exchanger, includes a remote thermostat and 6-foot power cord, and can be installed indoors or outdoors depending on your layout.
Best For: Laundromats that want a higher-flow natural gas tankless unit with flexible installation options.
Pros:
- Up to 9.8 GPM flow rate for higher hot water demand
- Commercial grade copper heat exchanger
- Indoor/outdoor installation flexibility
- Includes remote thermostat and 6-foot power cord
Cons:
- Natural gas installation is required
- Wall-mounted unit still needs proper venting/setup planning
- Flow claims depend on actual conditions and temperature rise
This is a strong choice when laundromat usage calls for more throughput than a basic electric unit can provide. The combination of high flow, gas power, and flexible placement makes it a practical commercial-style option for busy wash rooms.
Smart High-Capacity Choice – 36kW WiFi Electric Tankless Water Heater 8.7 GPM
For commercial tankless water heaters for laundromats, this 36kW electric model is built around high output and modern controls, with up to 8.7 GPM and WiFi remote control. It requires a substantial electrical setup, including a recommended 300A household service, four 40A double-pole breakers, and 240V power, so it is best considered where electrical capacity is already planned into the project.
Best For: Laundromats with strong electrical service that want a high-flow, app-controlled electric tankless unit.
Pros:
- Up to 8.7 GPM flow rate
- WiFi remote control for convenient temperature management
- Self-modulating technology helps maintain stable water temperature
- ETL certified with multiple safety protections
Cons:
- Requires significant electrical infrastructure and multiple breakers
- Recommended 300A service may not suit smaller sites
- Electric installation demands careful professional planning
This model makes sense when you want a space-saving electric unit with stronger flow than many compact alternatives. Its real advantage is the mix of high capacity, smart controls, and safety features, but only if your laundromat can support the power requirements.
How We Picked These Commercial Tankless Water Heaters for Laundromats
We prioritized continuous flow, temperature consistency, fuel efficiency, commercial suitability, and installation practicality. For laundromats, the best units are not always the highest-rated on paper; they are the ones that can maintain reliable hot water during peak demand while fitting the building’s gas, venting, or electrical capacity.
We also favored models with strong brand support, scale management features, and flexible installation options. Those details matter when equipment runs for long hours and service downtime affects customer throughput.
Quick Comparison
Gas tankless models usually offer the best blend of output and operating cost for commercial laundry use, especially in buildings with reliable natural gas or propane supply. Electric units can work well in smaller operations or as supplemental systems, but they require substantial electrical capacity. Traditional commercial tank-type heaters may still be the better fit when peak draw is very high or plumbing design favors stored hot water.
Key Buying Factors for Commercial Tankless Water Heaters for Laundromats
Flow Rate and Temperature Rise
Look for enough GPM to cover simultaneous washers and any sinks or utility fixtures. Published GPM ratings are helpful, but real-world output drops as incoming water gets colder and target temperatures rise.
Fuel Source and Utility Capacity
Natural gas is usually the easiest long-term operating choice if available. Propane can work in off-grid or rural locations. Electric tankless units demand large breaker capacity and may require service upgrades, so confirm electrical infrastructure before buying.
Commercial-Duty Features
For laundromat use, features like cascade compatibility, recirculation, scale prevention, and smart controls can improve uptime and reduce maintenance. If your water is hard, scale control is especially important because mineral buildup reduces efficiency and flow over time.
Venting, Installation, and Service Access
Indoor gas units need proper venting, clearances, and a location that allows easy servicing. Outdoor-rated models can simplify installation where climate and code allow. Make sure local permitting and maintenance access are part of the plan before purchase.
Who Should Buy Which Commercial Tankless Water Heaters for Laundromats?
Choose a high-output commercial gas model if your laundromat runs multiple machines throughout the day and you want lower operating costs over time. Pick a tank-type commercial heater if you need a buffer for heavy intermittent demand or want a simpler replacement for an existing stored-hot-water setup. Choose electric tankless only if your electrical service can support it and your hot water demand is moderate or strategically distributed.
In short, the best Commercial Tankless Water Heaters for Laundromats are the ones matched to your utility infrastructure, peak demand, and maintenance plan—not just the highest-spec model in the lineup.
