6 Best Alternatives to the Titan TNKLS WTRHTR11.8KW TITAN (2026)
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Looking for titan tnkls wtrhtr11 8kw titan alternatives? The original Titan TNKLS WTRHTR11.8KW TITAN delivers endless hot water in a tiny 7 x 2.5 x 2.5 inch footprint. Its 11.8 kW heating element suits high-output single-fixture needs where space is tight. You get compact design and energy savings with UL and ETL Lead Free certifications.
You might want a different spec, size, feature or brand if you need smart controls, a larger tank, or propane power. Some users require 120V wiring instead of 240V. Others prefer RV-compatible units or under-sink models with digital interfaces. We chose these alternatives because their specs overlap with the original. Each product shares key traits like electric heating or point-of-use efficiency. This list helps you find a match for your specific electrical capacity and flow requirements without compromising on performance.
Our top pick: Titan Compact Electric Tankless Water Heater.
Comparing the Top Alternatives
Electrolux 8kW Under-Sink Smart Water Heater
The Electrolux 8kW unit matches the Titan in power but swaps the cream finish for pearl white. It measures 3.35 x 8.9 x 3.35 inches, making it slightly wider and taller than the Titan’s 7 x 2.5 x 2.5 inch profile. This model adds smart control features, which the Titan lacks. You get instant heat for a single sink, but it still requires a 40A circuit like most high-output electric units. Choose this if you want digital management and do not mind the extra width. It is a direct electric alternative for under-sink use where precise temperature adjustment matters more than the smallest possible footprint.
Thermomate 8-Gallon 120V Point-of-Use Water Heater
The Thermomate 8-Gallon unit operates on 120V, unlike the Titan’s 240V requirement. This allows installation near standard outlets, but it uses a tank rather than tankless technology. Its dimensions are 17.7 x 17.7 x 17.7 inches, significantly larger than the Titan’s compact design. You trade endless hot water for stored capacity. This unit suits single sinks or small appliances where high flow rates are not critical. It is a practical choice for tight spaces with limited electrical capacity. The white finish is standard. Pick this if you need a reliable backup for a fixture that does not require continuous heating, accepting the bulkier size for easier electrical integration.
Rheem 8 kW Multi-Fixture Tankless Water Heater
The Rheem 8kW model is a point-of-use heater similar to the Titan but operates at 8 kW rather than 11.8 kW. It measures 12.6 x 8.25 x 3.63 inches, making it longer and wider than the Titan’s narrow 2.5 inch width. The gray finish differs from the Titan’s cream color. It still requires 240V wiring. You get precise temperature settings, but the lower wattage means less heating power for high-demand fixtures. This unit fits users who have the necessary electrical infrastructure but need a slightly different form factor. Choose it for single-fixture applications where the Titan’s power is unnecessary, prioritizing a familiar brand and compact electric design.
APUS 68,000 BTU RV Propane Water Heater
The APUS 68,000 BTU unit uses propane instead of electricity. It is designed for RV compartments, measuring 14.2 x 15 x 14.2 inches. This is much larger than the Titan’s tiny footprint. You gain high flow rates and independence from electrical circuits, but you must have a propane supply and 12V DC system. The white finish is standard for RV gear. This model suits RV owners who need a standard replacement unit. It delivers reliable hot water for travel trailers. Pick this if you travel frequently and want high output without worrying about 240V wiring constraints, accepting the larger size for gas-powered convenience.
VEVOR 55,000 BTU RV Tankless Water Heater
The VEVOR 55,000 BTU heater is a propane unit for RV families. It measures 15 x 15 x 15 inches, fitting standard openings. The black finish contrasts with the Titan’s cream color. You get high BTU output and smart controls, which the Titan lacks. It requires propane and 12V DC power. This model suits travelers who value high heating power over compact electric design. It is ideal for RVs where space allows for a 15-inch square unit. Choose this if you need powerful instant hot water for multiple uses and prefer gas efficiency. It gives up the small footprint for greater heating capacity and smart management features.
Orbek 60,000 BTU 12V RV Tankless Water Heater
The Orbek 60,000 BTU unit is a propane tankless heater for RVs. It measures 12.7 x 12.7 x 12.7 inches, larger than the Titan but smaller than some competitors. The silver finish is distinct. You get a smart remote for flexible temperature control, a feature the Titan does not offer. It runs on propane and 12V DC, suitable for high-altitude performance. This model fits RV travelers needing reliable hot water without electrical constraints. Pick this if you want precise control and high output in a compact gas unit. It sacrifices the Titan’s small electric footprint for gas-powered flexibility and remote management capabilities.
Quick picks
Our 7 picks
Titan Compact Electric Tankless Water Heater
Best for: high-output single fixture installations
- Wattage
- 11.8 kW
- Certification
- UL, ETL Lead Free
- Dimensions
- 7 x 2.5 x 2.5 inches
View on Amazon: Titan Compact Electric Tankless Water Heater
The Titan TNKLS WTRHTR11.8KW TITAN delivers 11.8 kW of heating power in a compact 7 x 2.5 x 2.5 inch frame. This electric unit operates on 240V and features UL and ETL Lead Free certification. Its small footprint allows for easy installation in tight spaces. You get endless hot water without the bulk of a traditional tank. The design prioritizes space savings and energy efficiency for specific household needs.
Pros
- High 11.8 kW heating capacity
- Compact 7-inch height and 2.5-inch width
- UL and ETL Lead Free certified
Cons
- Requires 240V electrical connection
- Cream color may not match all decor
- No smart controls or remote access listed
Good fit if
- You need a high-output unit for a single fixture
- You have limited space for installation
- You want a certified lead-free electric heater
Skip if
- You only have 120V outlets available
- You need a propane or gas model
- You require a large storage tank capacity
Verdict: Titan 11.8 kW Tankless Water Heater fits users who need maximum heating power in a tiny footprint. It is ideal for single-fixture applications where space is tight and electrical capacity allows for 240V wiring.
Electrolux 8kW Under-Sink Smart Water Heater
Best for: single sink hot water with smart control
- Fuel Type
- Electric
- Wattage
- 8 kW
- Installation Location
- Under Sink
- Voltage
- 240V
- Temperature Control
- 80°F – 140°F
- Dimensions
- 8.9" x 3.35" x 3.35"
View on Amazon: Electrolux 8kW Under-Sink Smart Water Heater
This Electrolux unit is an 8 kW electric tankless water heater designed for under-sink use. It measures 8.9 x 3.35 x 3.35 inches and weighs 7.8 pounds. The device connects to a 240V circuit and heats water instantly in about 3 seconds. You can control the temperature between 80°F and 140°F via a smartphone app or Alexa. It is optimized for single faucets and saves energy by heating only what you need.
Pros
- 8 kW electric heating power for instant hot water
- Compact dimensions of 8.9 x 3.35 x 3.35 inches
- Smart WiFi and Alexa voice control included
- Adjustable temperature range from 80°F to 140°F
Cons
- Requires a dedicated 40A circuit for installation
- Not suitable for shower use due to low wattage
- Limited to single faucet applications
Good fit if
- You need hot water for a kitchen or bathroom sink
- You have a 240V circuit available nearby
- You want to control temperature via a smartphone app
Skip if
- You plan to install this unit for a shower
- You only have a 120V electrical outlet
- You need a unit with a higher amperage rating
Verdict: Electrolux 8kW Electric Under Sink Heater fits small spaces and single-faucet needs. It offers smart control and instant heat for sinks, but requires a 40A circuit and cannot handle shower demands.
Thermomate 8-Gallon 120V Point-of-Use Water Heater
Best for: Single sink or small appliance hot water
- Fuel Type
- Electric
- Wattage
- 1440 W
- Capacity
- 8.0 gallons
- Voltage
- 120 V
- Temperature Control
- 50°F to 149°F
- Certification
- UL Listed
View on Amazon: Thermomate 8-Gallon 120V Point-of-Use Water Heater
This 8.0-gallon point-of-use water heater delivers instant hot water at 1440W and 120V. It features an adjustable temperature range from 50°F to 149°F and a durable Incoloy 800 heating element. The compact design allows for under-sink or wall mounting. It suits small households or specific sink setups where space is limited and a standard 120V outlet is available.
Pros
- 8.0-gallon capacity for consistent hot water supply
- 1440W power at 120V for standard plug-in use
- Adjustable thermostat from 50°F to 149°F
- Incoloy 800 stainless steel element resists corrosion
- UL Listed with ASME and CSA safety certifications
Cons
- Lower wattage than whole-house alternatives
- Requires 120V outlet, not hardwired
- Smaller capacity than standard tank models
Good fit if
- You need hot water for a single sink
- You have a standard 120V outlet nearby
- You want a compact unit for under-sink installation
Skip if
- You need to supply multiple fixtures simultaneously
- You only have 240V electrical circuits
- You require a high-flow whole-house solution
Verdict: Thermomate 8 Gallon Electric Tank is a practical choice for powering a single sink or small appliance. It fits well in tight spaces where a standard 120V outlet is accessible and high flow rates are not required.
Rheem 8 kW Multi-Fixture Tankless Water Heater
Best for: Single sink or small shower point-of-use
- Fuel Type
- Electric
- Voltage
- 240V
- Wattage
- 8 kW
- Dimensions
- 12.6 × 8.25 × 3.63 inches
- Weight
- 8 pounds
View on Amazon: Rheem 8 kW Multi-Fixture Tankless Water Heater
The Rheem RTEX-08 is an 8kW electric tankless water heater designed for point-of-use applications. It delivers up to 1.95 gallons per minute at 240V. The unit features digital thermostatic controls with 1-degree increments from 80°F to 140°F. Its compact dimensions of 12.6 by 8.25 by 3.63 inches save significant space. This model suits small sinks or showers where on-demand hot water is needed without a large storage tank.
Pros
- Delivers up to 1.95 GPM flow rate
- Digital controls allow 1-degree temperature adjustments
- Compact size saves 90% space compared to tanks
- Weighs only 8 pounds for easy mounting
Cons
- Requires a dedicated 40-amp double-pole breaker
- Needs #8 AWG copper wiring for installation
- Limited to point-of-use, not whole-home use
Good fit if
- You need hot water for a single sink
- You have a 240V circuit available
- You want precise temperature control
Skip if
- You need hot water for multiple fixtures
- You only have 120V electrical service
- You cannot install a 40-amp breaker
Verdict: Rheem 8kW Point-of-Use Electric Tankless is a compact solution for single-fixture hot water needs. It fits users who have the necessary 240V electrical infrastructure and require precise temperature settings.
APUS 68,000 BTU RV Propane Water Heater
Best for: Standard RV water heater replacement
- Fuel Type
- Propane
- Flow Rate
- 3.9 GPM
- BTU
- 68,000 BTU
- Voltage
- 12V DC
- Certification
- CSA
- Dimensions
- 14.96 x 14.96 x 14.18 inches
The APUS RV Tankless Water Heater delivers 68,000 BTU of propane heat with a 3.9 GPM flow rate. Its compact 15-inch square design replaces standard 6 to 12-gallon tank units in most RVs. You get intelligent freeze protection and staged combustion for stable performance up to 9,800 ft. It includes a remote control and operates on 12V DC power, making it suitable for travel trailers and fifth wheels.
Pros
- High 68,000 BTU output for reliable hot water
- Generous 3.9 GPM flow rate for showers
- Includes remote control for indoor temperature adjustment
- Fits standard 15x15 inch RV water heater compartments
- CSA certified with multiple safety protections
Cons
- Propane fuel requires a gas line connection
- Limited to 12V DC electrical system
- White door finish may not match all RV styles
Good fit if
- You need a direct replacement for a 6, 10, or 12-gallon tank in an RV
- You want a high flow rate for comfortable showers
- You prefer propane over electric heating for off-grid use
Skip if
- You require an electric-only unit for your RV
- You need a unit larger than 15 inches in width
- You are installing in a permanent home with city gas
Verdict: APUS 68,000 BTU Propane RV Water Heater fits RV owners who want high flow and easy installation in standard compartments. It suits those who already have propane and 12V DC systems in their travel trailers.
VEVOR 55,000 BTU RV Tankless Water Heater
Best for: RV families needing high BTU propane heating
- BTU
- 55,000 BTU
- Certification
- CSA
- Dimensions
- 15 x 15 x 15 in
- Use
- RV
- Weight
- 25.8 pounds
This VEVOR unit delivers 55,000 BTU of heating power for rapid hot water in RVs. It features segmented combustion technology to adjust temperature based on seasonal changes. The 15 x 15 inch design includes an LED smart display and touch controls for easy operation. CSA certification ensures safety. It fits standard 15x15 inch RV openings with 1/2 inch NPT connectors. This heater suits travelers needing reliable, instant hot water on the road.
Pros
- 55,000 BTU heating power for fast hot water
- LED smart display with touch controls
- CSA certified for safety
- Segmented combustion technology for seasonal adjustment
Cons
- Large 15 x 15 inch footprint limits placement options
- Propane fuel source requires external gas connection
- Heavier at 25.8 pounds compared to compact electric units
Good fit if
- You need high BTU output for multiple fixtures
- You travel in an RV with standard 15x15 inch openings
- You prefer propane over electric power sources
Skip if
- You require a compact unit under 10 inches
- You only have 120V or 240V electrical power
- You need a built-in water tank for storage
Verdict: VEVOR 55000 BTU RV Tankless Water Heater fits RV families needing powerful, instant hot water via propane. It is ideal for travelers with standard 15x15 inch openings who value high BTU output and smart controls over compact electric alternatives.
Orbek 60,000 BTU 12V RV Tankless Water Heater
Best for: RV travelers needing propane-powered hot water
- Fuel Type
- Propane
- BTU
- 60,000 BTU
- Voltage
- 12V DC
- Temperature Control
- 95°F to 123°F
- Certification
- CSA
- Dimensions
- 12.7 x 12.7 x 12.7 in
View on Amazon: Orbek 60,000 BTU 12V RV Tankless Water Heater
The Orbek RV tankless water heater uses a 60,000 BTU propane burner to provide continuous hot water. It runs on 12V DC power and fits standard RV openings. The unit includes a smart remote for temperature control between 95°F and 123°F. It also features high-altitude mode and frost protection. This model suits RV families needing reliable hot water for showers and dishwashing without tank storage.
Pros
- 60,000 BTU/hr propane burner for continuous hot water
- 12V DC power supply for RV compatibility
- Smart remote control adjusts temperature from 95°F to 123°F
- Built-in 150 PSI pressure-reducing valve
- High-altitude mode for operation up to 9,800 feet
Cons
- Door panels sold separately for standard RV openings
- Propane fuel requires external tank connection
- 12.7-inch cubic size may not fit all compact spaces
Good fit if
- You need continuous hot water for an RV shower
- You want a propane unit with 12V DC power
- You travel to high altitudes and need altitude adjustment
Skip if
- You require an electric-only installation
- You need a unit with included decorative door panels
- You prefer a tank-style water heater for storage
Verdict: Orbek RV Propane Tankless Water Heater delivers reliable hot water for RV travelers. Its 60,000 BTU burner and smart remote make it ideal for campers who need flexible temperature control and high-altitude performance.
Specifications side by side
| Spec | Titan Compact Electric Tankless Water Heater | Electrolux 8kW Under-Sink Smart Water Heater | Thermomate 8-Gallon 120V Point-of-Use Water Heater | Rheem 8 kW Multi-Fixture Tankless Water Heater | APUS 68,000 BTU RV Propane Water Heater | VEVOR 55,000 BTU RV Tankless Water Heater | Orbek 60,000 BTU 12V RV Tankless Water Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | not specified | Electric | Electric | not specified | Propane | not specified | Propane |
| Flow Rate | not specified | not specified | not specified | not specified | 3.9 GPM | not specified | not specified |
| BTU | not specified | not specified | not specified | not specified | 68,000 BTU | 55,000 BTU | 60,000 BTU |
| Wattage | 11.8 kW | 8 kW | 1440 W | not specified | not specified | not specified | not specified |
| Installation Location | not specified | Under Sink | not specified | not specified | not specified | not specified | not specified |
| Capacity | not specified | not specified | 8.0 gallons | not specified | not specified | not specified | not specified |
| Voltage | not specified | 240V | 120 V | not specified | 12V DC | not specified | 12V DC |
| Temperature Control | not specified | 80°F – 140°F | 50°F to 149°F | not specified | not specified | not specified | 95°F to 123°F |
| Certification | UL, ETL Lead Free | not specified | UL Listed | not specified | CSA | CSA | CSA |
| Dimensions | 7 x 2.5 x 2.5 inches | 8.9" x 3.35" x 3.35" | 17.7"H x 17.7"W x 15.4"D | not specified | 14.96 x 14.96 x 14.18 inches | 15 x 15 x 15 in | 12.7 x 12.7 x 12.7 in |
| Use | not specified | Under Sink | not specified | not specified | RV | RV | RV |
| Weight | not specified | 7.8 pounds | 27 pounds | 8 pounds | 24 pounds | 25.8 pounds | 20.5 pounds |
| Color | cream | Pearl White | White | Gray | White | Black | Tankless, Silver Water Heater |
| Model | N-120 | 8kW | ES800 | RTEX-08 | AP-AWH-RV10W-NEW | TM-RV03-2B | HRU-RG060-A1 |
| Size | not specified | E-8 kW | not specified | not specified | not specified | 55000 BTU | not specified |
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Frequently asked questions
Can these alternatives replace the Titan TNKLS WTRHTR11.8KW for a shower?
Most listed models are designed for single fixtures like sinks or small appliances, not full showers. The Electrolux 8kW explicitly cannot handle shower demands. For shower use, you need higher output units. The APUS and VEVOR propane models offer high BTU ratings suitable for RV showers. Always check voltage and amperage requirements before installing in a wet area.
Do any of these options work with a standard 120V outlet?
Yes, the Thermomate 8-Gallon model operates on 120V. It is a tank-style heater ideal for tight spaces where standard outlets are accessible. Most other electric alternatives, including the Electrolux and Rheem units, require 240V wiring. Ensure your electrical panel can support the specific voltage and amperage before purchasing. The Thermomate is the only 120V option in this list.
Which alternative is best for an RV with a 12V DC system?
The Orbek 60,000 BTU model is designed for RV travelers using propane and 12V DC systems. It features smart remote control and high-altitude performance. The APUS model also suits RVs with existing propane infrastructure. These propane units provide instant hot water without relying on high-amperage electric circuits. They fit standard RV compartments and replace traditional tank heaters.
How do the dimensions of the Electrolux compare to the Titan?
The Electrolux measures 3.35 x 8.9 x 3.35 inches, while the Titan Compact measures 2.5 x 7 x 2.5 inches. The Electrolux is wider and taller than the Titan. It weighs 7.8 pounds and comes in pearl white. The Titan is cream-colored and slightly more compact. Both offer 8 kW heating power for under-sink installations. Choose based on available space and color preference.
Is the Rheem unit suitable for point-of-use sink installations?
Yes, the Rheem 8 kW model is a compact solution for single-fixture hot water needs. It fits users with 240V electrical infrastructure who need precise temperature settings. Its dimensions are 12.6 x 8.25 x 3.63 inches. It weighs 8 pounds and features a gray finish. This unit is ideal for sinks where space is limited but consistent hot water is required.
What is the weight difference between the VEVOR and Orbek RV heaters?
The VEVOR 55,000 BTU heater weighs 25.8 pounds, while the Orbek 60,000 BTU unit weighs 20.5 pounds. The VEVOR measures 15 x 15 x 15 inches. The Orbek is slightly smaller at 12.7 x 12.7 x 12.7 inches. Both use propane fuel. The Orbek is lighter and more compact. Choose based on your RV compartment size and desired BTU output.
Can the Thermomate tank heater provide hot water for multiple fixtures?
No, the Thermomate 8-Gallon model is designed for a single sink or small appliance. It fits well in tight spaces where high flow rates are not required. It is not suitable for powering multiple fixtures simultaneously. For multi-fixture needs, consider higher-capacity tankless electric units or propane models with higher BTU ratings. The Thermomate is strictly for point-of-use applications.