6 Best Alternatives to the NOVIEEX Tankless Water Heater (2026)
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If you are searching for novieex tankless water heater alternatives, this guide compares seven propane units that share similar core specifications. The original Novieex model delivers 3.6 GPM with 86,000 BTU of heating power. It offers precise temperature control within a 95°F to 149°F range and features a compact wall-mounted design. This makes it a strong choice for indoor households that need stable water temperature and space efficiency. However, you might prefer a different unit if you need higher flow rates, outdoor durability, or a lower price point. Some buyers also seek units with different physical dimensions to fit specific utility spaces.
The alternatives listed here were selected because their technical specs overlap with the Novieex baseline. You will find options ranging from 3.54 GPM to 4.74 GPM flow rates. Several models offer higher BTU outputs for homes with multiple simultaneous fixtures. Others provide specialized features like digital displays or portable designs for RV use. Each product in this list of 6 alternatives addresses specific needs that the original unit may not cover. You can compare dimensions, fuel efficiency, and installation requirements to find the best fit for your plumbing setup.
Our top pick: Novieex 3.6 GPM Propane Tankless Water Heater.
How these models differ
VEVOR 4.3 Gal Propane Tankless Water Heater
The VEVOR 4.3 GPM unit offers a higher flow rate than the Novieex 3.6 GPM model. This extra capacity supports simultaneous use in more fixtures without temperature drop. Both units share propane fuel and indoor installation requirements. The VEVOR features a compact square design measuring 13.8 inches on each side. It maintains precise digital control for consistent water temperatures. Choose this alternative if you need greater volume for whole-house applications. The Novieex remains the better choice if your plumbing setup limits flow to three fixtures. Both provide reliable heating for standard residential needs.
VELPAX 4.74 GPM Indoor Propane Water Heater
The Velpax 4.74 GPM model delivers significantly higher flow than the Novieex 3.6 GPM unit. This 18L capacity suits homes with multiple simultaneous hot water demands. It shares the propane fuel type and indoor installation constraints of the original. The Velpax features a white finish and a compact 13.8-inch square footprint. It prioritizes high-volume delivery over the Novieex’s specific temperature stability focus. Select this option if you frequently run showers and sinks at the same time. The Novieex is preferable for smaller households with lower simultaneous usage. Both units offer durable construction for permanent indoor mounting.
Forimo 18L Propane Indoor Tankless Heater
The Forimo 18L model matches the Velpax in flow capacity but differs in design. It provides high-volume hot water for indoor multi-fixture use, exceeding the Novieex 3.6 GPM output. This unit features a black exterior and a digital display for clear operation. It shares the propane fuel source and indoor placement requirements. The Forimo suits homes needing robust heating power for several fixtures. The Novieex offers a more compact profile for tight utility spaces. Choose the Forimo if flow volume is your primary concern. The Novieex remains ideal for precise temperature control in smaller setups. Both require professional installation and proper ventilation.
Forimo 18L Indoor Propane Tankless Heater
This Forimo 18L model highlights its 68,000 BTU heating power, which differs from the Novieex 86,000 BTU rating. Despite lower BTU, it maintains high flow rates for indoor use. The unit features a taller profile at 25.4 inches and a black finish. It shares the propane fuel type and indoor installation needs of the Novieex. The digital display ensures precise temperature management for consistent hot water delivery. Select this alternative if you prioritize steady flow over maximum heating power. The Novieex provides higher BTU for colder inlet water conditions. Both units are designed for permanent residential installation with proper propane connections.
VEVOR 42,000 BTU Propane RV Tankless Water Heater
The VEVOR RV model differs significantly by targeting outdoor and mobile use. It offers 42,000 BTU of heating power, lower than the Novieex 86,000 BTU. This unit is designed for RV showers and pet washing, not whole-house indoor use. Its cubic 15-inch design suits compact mobile spaces. It shares the propane fuel source but lacks the indoor plumbing integration of the Novieex. Choose this option for off-grid or recreational applications. The Novieex is better for permanent residential hot water needs. The RV model sacrifices flow volume for portability and outdoor durability. Both units provide reliable propane heating for specific use cases.
Camplux Portable Propane Water Heater with 12V Pump
The Camplux Pro model is designed for camping and off-grid use, unlike the Novieex indoor unit. It includes a 12V pump for self-contained operation in remote locations. The unit is much smaller, measuring 4.33 inches by 14.8 inches, and weighs only 10 pounds. It shares the propane fuel source but offers lower flow capacity. This model suits campers needing portable hot water for showers. The Novieex provides higher flow and stability for permanent home installation. Choose the Camplux for recreational travel and temporary setups. The Novieex remains the practical choice for residential plumbing. Both units rely on propane for efficient heating in their respective environments.
Quick picks
Our 7 picks
Novieex 3.6 GPM Propane Tankless Water Heater
Best for: indoor households needing precise temperature stability
- Fuel Type
- Propane
- Flow Rate
- 3.6 GPM
- BTU
- 86,000 BTU
- Installation Location
- Indoor
- Voltage
- 110V-120V AC/60Hz
- Temperature Control
- 95°F to 149°F, ±1°F
View on Amazon: Novieex 3.6 GPM Propane Tankless Water Heater
The NOVIEEX RS-13 delivers up to 3.6 GPM of instant hot water using 86,000 BTU of propane power. It features a precise digital thermostat with ±1°F control and a wide adjustable range from 95°F to 149°F. This indoor unit measures 28.5 x 17.3 x 10.8 inches and weighs 19.8 pounds. It suits households needing reliable simultaneous flow for showers and sinks without temperature drops.
Pros
- 86,000 BTU heating power for instant hot water
- 3.6 GPM flow rate supports multiple fixtures
- Digital thermostat offers ±1°F temperature precision
- Wall-mounted design saves over 50% of space
Cons
- Lower flow rate than 4.74 GPM competitors
- Indoor installation only, no outdoor rating
- Recommended for use below 2000 feet altitude
Good fit if
- You need precise temperature control for sensitive skin
- You have limited space for a wall-mounted unit
- You want simultaneous hot water for showers and sinks
Skip if
- You require outdoor installation capabilities
- You need a flow rate above 4.0 GPM
- You live at high altitudes above 2000 feet
Verdict: The NOVIEEX Propane 3.6 GPM Tankless Heater is a compact, precise solution for indoor use. It fits buyers who prioritize stable temperature control and space-saving design over maximum flow volume. It is a practical choice for standard residential plumbing setups.
VEVOR 4.3 Gal Propane Tankless Water Heater
Best for: indoor whole-house use with precise temp control
- Fuel Type
- Propane
- BTU
- 100,000 BTU/h
- Installation Location
- Indoor
- Temperature Control
- ±1°F
- Dimensions
- 21.7 x 13.8 x 13.8 inches
- Use
- Whole House
This VEVOR unit delivers 100,000 BTU of heating power for indoor whole-house use. It holds a 4.3-gallon capacity and features smart temperature control with ±1°F precision. The large LED display shows real-time water temperature and status. It includes multiple safety protections like anti-freeze and leakage detection. This heater suits households needing reliable, instant hot water with precise temperature management.
Pros
- 100,000 BTU/h heating capacity
- ±1°F precision temperature control
- Large LED display with touch panel
- Multiple safety protections including anti-freeze
Cons
- 4.3-gallon capacity is smaller than some competitors
- Indoor installation only
- Heavier build at 19.8 pounds
Good fit if
- You need high BTU output for whole-house use
- You want precise temperature control within ±1°F
- You require multiple built-in safety features
Skip if
- You need outdoor installation capability
- You prefer a lighter unit under 15 pounds
- You want a larger 5.3-gallon capacity
Verdict: VEVOR 4.3 Gal Propane Tankless Water Heater offers strong heating power and precise control for indoor whole-house needs. It fits buyers prioritizing safety features and stable water temperature over portability or outdoor use.
VELPAX 4.74 GPM Indoor Propane Water Heater
Best for: Indoor multi-fixture hot water needs
- Fuel Type
- Propane
- Flow Rate
- 4.74 GPM
- BTU
- 68,000 BTU/hr
- Installation Location
- Indoor
- Temperature Control
- 95°F to 149°F
- Dimensions
- 21.7 x 13.8 x 13.8 inches
The VELPAX 18L delivers 4.74 GPM at 68,000 BTU for indoor use. It heats water from 95°F to 149°F with precise digital control. The stainless steel body and copper tank ensure durability. You get steady temperature regulation and multiple safety features. This unit suits homes or cabins needing simultaneous hot water for two to three fixtures.
Pros
- 4.74 GPM flow rate supports 2-3 points of use
- 68,000 BTU/hr output for efficient heating
- LED digital display for precise temperature adjustment
- Stainless steel body and oxygen-free copper tank
Cons
- Indoor installation only requires proper ventilation
- Operates on propane gas only, not natural gas
- Includes only 2.5-inch vent pipe, may need upgrade
Good fit if
- You need hot water for multiple fixtures simultaneously
- You have an indoor space with proper venting
- You want precise digital temperature control
Skip if
- You require outdoor installation capability
- You use natural gas instead of propane
- You need a unit smaller than 18L capacity
Verdict: VELPAX 18L Propane Tankless Heater offers high flow and durability for indoor multi-fixture use. It fits buyers who need reliable, precise hot water delivery in a compact indoor unit.
Forimo 18L Propane Indoor Tankless Heater
Best for: indoor multi-fixture propane hot water
- Fuel Type
- Propane (LPG)
- Flow Rate
- 4.74 GPM
- BTU
- 81,888 BTU/hour
- Installation Location
- Indoor
- Temperature Control
- Fahrenheit digital display
- Dimensions
- 21.7 x 13.8 x 13.8 inches
The Forimo 18L is an indoor propane tankless water heater designed for steady temperature control. It delivers 4.74 GPM with 81,888 BTU/hour output, supporting two to three simultaneous water points. The unit features a stainless steel body with an oxygen-free copper water tank and an LED digital display for precise adjustments. It requires only 3.6 PSI water pressure and includes a 2.5-inch horizontal vent pipe for installation.
Pros
- 4.74 GPM flow rate for multiple fixtures
- 81,888 BTU/hour heating capacity
- LED digital display for temperature control
- Stainless steel and copper construction
Cons
- Indoor installation only
- Propane fuel type limits placement options
- Requires specific ventilation setup
Good fit if
- You need high flow for indoor bathroom and kitchen use
- You have access to propane gas supply
- You want steady temperature with digital control
Skip if
- You require outdoor installation capability
- You prefer natural gas over propane
- You need a portable or RV-ready unit
Verdict: Forimo 18L Propane Tankless Water Heater suits homes needing reliable indoor hot water for multiple fixtures. It is a solid choice for permanent installations where propane is available and ventilation is properly managed.
Forimo 18L Indoor Propane Tankless Heater
Best for: Indoor homes needing high flow propane heating
- Fuel Type
- Propane
- Flow Rate
- 4.74 GPM
- BTU
- 68,000 BTU/hr
- Installation Location
- Indoor
- Temperature Control
- 86°F-167°F
- Dimensions
- 25.4 x 14.4 x 14.4 inches
The Forimo 18L delivers 68,000 BTUs and 4.74 GPM for indoor propane use. It features a stainless steel body with an oxygen-free copper tank. The LED display allows temperature control from 86°F to 167°F. This unit supports simultaneous use at two or three fixtures. It requires only 3.6 PSI of water pressure to operate efficiently.
Pros
- 68,000 BTU/hr output for fast heating
- 4.74 GPM flow rate for multiple fixtures
- Digital display with 86°F-167°F range
- Stainless steel and copper construction
Cons
- Indoor installation only
- Propane fuel type limits outdoor use
- Requires horizontal vent pipe
Good fit if
- You need high flow for a bathroom and kitchen
- You want precise digital temperature control
- You have indoor propane access
Skip if
- You require outdoor installation
- You use natural gas instead of propane
- You need portable RV heating
Verdict: Forimo 18L 68,000 BTU Propane Heater provides robust indoor performance for homes needing high-volume hot water. It suits households with propane lines who prioritize steady temperature and flow over portability.
VEVOR 42,000 BTU Propane RV Tankless Water Heater
Best for: RV outdoor showers and pet washing
- Fuel Type
- Propane
- BTU
- 42,000 BTU
- Installation Location
- Outdoor
- Dimensions
- 15 x 15 inches
- Use
- RV
- Weight
- 26.9 pounds
View on Amazon: VEVOR 42,000 BTU Propane RV Tankless Water Heater
This VEVOR unit delivers 42,000 BTU of propane heat for rapid, instant hot water. It features an LED smart display with touch controls for easy monitoring. The design includes a 15 x 15 inch door and an outdoor water outlet for washing pets or vehicles. Segmented combustion technology adjusts temperature for all-season use, preventing overheating in summer. It is built for RVs with standard 1/2 inch NPT connectors.
Pros
- 42,000 BTU output for quick heating
- LED smart display with touch controls
- Outdoor water outlet for external use
- Segmented combustion for all-season efficiency
Cons
- Limited to 1.32 GPM flow rate compared to indoor models
- Heavier at 26.9 pounds than portable units
- Designed specifically for RV door dimensions
Good fit if
- You need a dedicated outdoor shower solution for your RV
- You want an LED display for easy temperature monitoring
- You require a propane unit with segmented combustion technology
Skip if
- You need high flow rates for multiple simultaneous showers
- You are installing in a standard indoor residential setting
- You prefer a lightweight unit under 20 pounds
Verdict: VEVOR RV Tankless Water Heater 42000 BTU is a practical option for RVers who prioritize outdoor utility and precise digital control over high-volume indoor flow.
Camplux Portable Propane Water Heater with 12V Pump
Best for: off-grid camping showers
- Fuel Type
- Propane
- Flow Rate
- 1.32 GPM
- Installation Location
- Outdoor
- Dimensions
- 14.8 x 4.33 x 4.33 inches
- Use
- Camping, RV
- Weight
- 10 pounds
View on Amazon: Camplux Portable Propane Water Heater with 12V Pump
This is a complete off-grid camping shower system featuring the Camplux AY132 tankless water heater and a 12V pump. It delivers 1.32 GPM of instant hot water using propane fuel. The kit includes a 25ft power cable and extension hoses for flexible setup. It weighs 10 pounds and measures 14.8 x 4.33 x 4.33 inches. It suits campers who need a self-contained hot water solution away from RV hookups.
Pros
- Includes a 12V water pump for off-grid use
- Delivers 1.32 GPM flow rate for instant hot water
- Runs on propane and D-cell batteries without AC power
- Compact dimensions of 14.8 x 4.33 x 4.33 inches
Cons
- Low 1.32 GPM flow rate limits shower pressure
- Requires separate propane tank and D-cell batteries
- Designed for outdoor use only, not indoor installation
Good fit if
- You are boondocking or camping without water hookups
- You need a complete kit with pump and hoses
- You want to clean gear or pets with hot water
Skip if
- You require high-pressure shower flow above 1.32 GPM
- You need an indoor installation for permanent plumbing
- You prefer a unit with built-in power sources
Verdict: Camplux Portable Propane Shower Kit is a practical choice for campers who need a self-contained hot water system. It fits those who prioritize portability and off-grid capability over high flow rates.
Specifications side by side
| Spec | Novieex 3.6 GPM Propane Tankless Water Heater | VEVOR 4.3 Gal Propane Tankless Water Heater | VELPAX 4.74 GPM Indoor Propane Water Heater | Forimo 18L Propane Indoor Tankless Heater | Forimo 18L Indoor Propane Tankless Heater | VEVOR 42,000 BTU Propane RV Tankless Water Heater | Camplux Portable Propane Water Heater with 12V Pump |
|---|---|---|---|---|---|---|---|
| Fuel Type | Propane | Propane | Propane | Propane (LPG) | Propane | Propane | Propane |
| Flow Rate | 3.6 GPM | not specified | 4.74 GPM | 4.74 GPM | 4.74 GPM | not specified | 1.32 GPM |
| BTU | 86,000 BTU | 100,000 BTU/h | 68,000 BTU/hr | 81,888 BTU/hour | 68,000 BTU/hr | 42,000 BTU | not specified |
| Installation Location | Indoor | Indoor | Indoor | Indoor | Indoor | Outdoor | Outdoor |
| Voltage | 110V-120V AC/60Hz | not specified | not specified | not specified | not specified | not specified | not specified |
| Temperature Control | 95°F to 149°F, ±1°F | ±1°F | 95°F to 149°F | Fahrenheit digital display | 86°F-167°F | not specified | not specified |
| Dimensions | 28.5 x 17.3 x 10.8 in | 21.7 x 13.8 x 13.8 inches | 21.7 x 13.8 x 13.8 inches | 21.7 x 13.8 x 13.8 inches | 25.4 x 14.4 x 14.4 inches | 15 x 15 inches | 14.8 x 4.33 x 4.33 inches |
| Use | not specified | Whole House | not specified | not specified | not specified | RV | Camping, RV |
| Features | not specified | not specified | not specified | Digital Display | Digital Display | not specified | not specified |
| Weight | 19.8 pounds | 19.8 pounds | not specified | not specified | not specified | 26.9 pounds | 10 pounds |
| Size | 3.6GPM Propane | 4.3 Gal | 18L | 18L | not specified | 42000 BTU | Pro |
| Color | Gray | Gray | White | Black | Black | White | White |
| Model | RS-13 | JSQ30-B | HWRSQ-18L-001 | CT1314-HWRSQ | HWRSQ-18L-LPG-2 | TMRVQ-05010242 | AY132P43 |
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Frequently asked questions
Which alternative offers the highest flow rate for whole-house use?
The VEVOR 4.3 Gal Propane Tankless Water Heater provides the highest capacity among the top indoor picks. It is rated for whole-house use and offers precise temperature control. This makes it suitable for homes needing stable hot water across multiple fixtures without significant pressure loss.
Are there portable options for camping or RV use?
Yes, the Camplux Portable Propane Water Heater with 12V Pump is designed for off-grid camping showers. It is compact and lightweight, weighing only 10 pounds. The VEVOR RV Tankless Water Heater is another option, rated at 42,000 BTU for outdoor utility and pet washing needs.
Do these units require indoor ventilation?
Most listed models, including the NOVIEEX, VEVOR, VELPAX, and Forimo units, are specified for indoor installation. They require proper ventilation management for safe operation. The Camplux and VEVOR RV models are designed for outdoor or RV use, eliminating the need for indoor venting infrastructure.
Which model has the highest BTU output?
The Forimo 18L Indoor Propane Tankless Heater is highlighted as the best 68,000 BTU option. It provides robust performance for homes needing high-volume hot water. This high output supports steady temperature and flow, making it ideal for households with existing propane lines who prioritize heating power.
What are the physical dimensions of the top-rated unit?
The NOVIEEX 3.6 GPM Propane Tankless Water Heater measures 17.3 inches wide, 10.8 inches high, and 28.5 inches long. It weighs 19.8 pounds. This compact design allows it to fit standard residential plumbing setups while offering precise temperature stability for indoor households.
Is there a model with a digital display?
Yes, the Forimo 18L Propane Indoor Tankless Heater features a digital display. This model suits homes needing reliable indoor hot water for multiple fixtures. The display allows for easy monitoring of settings, ensuring consistent performance for permanent installations where propane is available.
Which unit is best for multi-fixture simultaneous use?
The VELPAX 4.74 GPM Indoor Propane Water Heater is rated for indoor multi-fixture hot water needs. It offers high flow and durability in a compact unit. This model fits buyers who need reliable, precise hot water delivery across several bathrooms or appliances simultaneously.