Tankless Water Heaters Buying Guide (2026): What Matters and 8 Picks
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This tankless water heater buying guide helps you choose the right unit for your specific needs. You will learn how to match flow rates, fuel types, and installation requirements to your household or vehicle. The recommendations are based strictly on published specifications from each manufacturer. We compare dimensions, power consumption, and capacity to show you what each model delivers in practice.
You can decide between compact electric units, propane heaters, and dual-fuel options. The list includes 8 picks that cover point-of-use sinks, whole-home systems, and RV setups. Each selection is ranked by how well its specs align with common use cases. You will see details like wattage, BTU output, and physical size to ensure a proper fit. Read on to find the model that matches your hot water demands without unnecessary features or compromises.
Our top pick: Thermomate 6.5-Gallon Under-Sink Electric Mini-Tank.
Key specs for choosing a unit
Fuel type and power source
Your available power source dictates the unit type. Electric models like the Rheem RTEX-18 require 240V circuits, ideal for fixed homes. Propane units, such as the APUS RV heater, offer portability and independence from grid power. Some RV models, like the Suburban, support dual fuel for flexibility. Always verify your home or vehicle has the correct voltage or gas line. Mismatched power requirements can prevent installation or cause safety issues. Choose electric for steady home use and propane for off-grid or mobile setups.
- Voltage compatibility (120V vs 240V)
- Gas line presence for propane
- Dual-fuel capability for RVs
Intended use and location
Match the heater to its specific environment. Point-of-use units, like the Thermomate under-sink model, serve single faucets efficiently. Whole-home electric tankless heaters, such as the Rheem, handle multiple simultaneous demands. RV-specific units fit compact camper spaces. Outdoor portable heaters, like the Camplux, are built for camping. Ensure the unit’s design suits its location. Indoor units need proper ventilation. Outdoor units require weather-resistant construction. Using a unit outside its intended scope can reduce efficiency or damage the equipment.
- Indoor vs outdoor rating
- Single-sink vs whole-home use
- RV-specific mounting requirements
Flow rate and capacity
Flow rate determines how much hot water you get. Tankless units provide continuous flow, measured in gallons per minute (GPM). Higher BTU ratings, like the 68,000 BTU APUS, generally support higher flow. Storage tank models, such as the 6.5-gallon Thermomate, hold a finite amount of hot water. Consider your peak usage. If multiple showers run at once, you need higher capacity. For single-sink use, a mini-tank or low-flow unit suffices. Check the manufacturer’s GPM rating at your local inlet water temperature.
- Gallons per minute (GPM) rating
- BTU output for propane units
- Tank storage size for mini-tanks
Physical dimensions and fit
Space constraints are critical, especially in RVs and under sinks. Measure your installation area before buying. The Suburban RV heater has a compact 12.7-inch cubic profile. The Rheem tankless unit is slim at 3.5 inches high. Portable units like the Camplux are lightweight and small. Ensure the unit fits your cabinet, closet, or RV bay. Check width, height, and length. Also consider weight for mounting support. Overlooking dimensions can lead to costly returns or difficult installations.
- Width, height, and length specs
- Weight for mounting support
- Cutout requirements for RVs
Control and monitoring features
User interface affects convenience. Digital controls, like those on the Rheem, allow precise temperature setting. Remote monitoring, found on the Ranein RV heater, lets you check status from a distance. Some units offer indoor remote controls, like the APUS. Others are manual or basic digital. Consider how often you adjust settings. Remote features are valuable for RVs or hard-to-reach installations. Digital displays provide clear feedback. Simple units are easier to maintain but less precise.
- Digital temperature display presence
- Remote monitoring or control options
- Ease of interface adjustment
Safety and protection systems
Safety features prevent damage and injury. Look for overheat protection, as seen in the Camplux model. This shuts off the unit if temperatures rise too high. Gas units should have flame failure devices. Electric units need dry-fire protection. Ensure the unit meets local safety codes. These systems are non-negotiable for reliable operation. They protect both the appliance and your home. Always verify the presence of these standard safeguards before purchasing.
- Overheat protection mechanism
- Flame failure device for gas
- Dry-fire protection for electric
Common Tankless Water Heater Types
Electric Tankless
Electric tankless units, such as the Rheem RTEX-18, provide on-demand heating without combustion. You need a dedicated 240V circuit, which limits installation to fixed locations. These models often feature self-modulating elements that adjust power to maintain steady output. They are compact and efficient for whole-home use where gas lines are unavailable. The trade-off is higher electricity usage and strict electrical requirements. You cannot install these in RVs or off-grid cabins without significant power infrastructure.
Propane RV Tankless
Propane tankless heaters like the APUS and VEVOR models deliver continuous hot water using gas. They are designed for RVs and campers, fitting standard cutouts for easy replacement of storage tanks. High BTU ratings, such as 68,000 BTU, ensure strong flow rates even in cold weather. Some units offer remote controls or exterior washing options for convenience. You benefit from independence from electrical hookups. The main trade-off is the need for propane refills and proper ventilation to handle combustion gases safely.
Dual-Fuel RV Heaters
Dual-fuel units like the Suburban model allow you to switch between gas and electric power. This flexibility is ideal for RVs where you may camp with or without shore power. They typically include a small storage tank, blending tankless efficiency with the reliability of stored hot water. You get consistent performance regardless of the power source available. The trade-off is the added weight and bulk of the tank compared to pure tankless designs. You also sacrifice some of the endless hot water benefit for greater versatility.
Common Mistakes to Avoid
Ignoring simultaneous hot water needs
You must calculate total flow rate for all fixtures used at once. If your unit cannot handle the combined demand, water temperature drops. Check the gallons per minute rating against your shower and sink usage to ensure consistent heat during peak times.
Overlooking gas line capacity for propane
Propane models require sufficient gas pressure and line diameter. An undersized line restricts fuel flow, causing the heater to shut down or heat inefficiently. Verify your existing infrastructure supports the BTU input before purchasing a high-output propane unit for your home or vehicle.
Assuming electric units fit any circuit
Electric tankless heaters often need dedicated high-amperage circuits. A standard household outlet cannot support the power draw. You must check your electrical panel for available space and wire gauge. Upgrading circuits can be costly and complex, so plan this installation step early in your process.
Forgetting annual maintenance requirements
Hard water causes mineral buildup inside the heat exchanger, reducing efficiency. You must flush the system annually with a descaling solution. Neglecting this leads to premature failure and lower flow rates. Check if your model requires specific tools or professional service for this routine task.
Quick picks
Our 8 picks
Thermomate 6.5-Gallon Under-Sink Electric Mini-Tank
Best for: single-sink point-of-use 120V installations
- Fuel Type
- Electric
- Wattage
- 1.44 kW
- Capacity
- 6.5 Gallons
- Voltage
- 120V
- Temperature Control
- 50°F to 149°F
- Certification
- UL Listed
View on Amazon: Thermomate 6.5-Gallon Under-Sink Electric Mini-Tank
The Thermomate 6.5-Gallon Mini-Tank Water Heater provides dedicated point-of-use hot water for a sink or counter. It runs on a standard 120-volt outlet drawing 1.44 kW at 12 amps, eliminating high-voltage wiring needs. Its glass-lined 6.5-gallon storage tank delivers temperatures between 50°F and 149°F across three dial settings. If you need dedicated under-sink hot water without rewiring your electrical panel, this compact plug-in unit suits single-fixture handwashing setups.
Pros
- Plugs into a standard 120V outlet drawing 12 amps
- Thermostat adjusts from 50°F to 149°F with freeze protection mode
- Temperature and pressure relief valve included
- Mounts on the wall or rests on the floor
Cons
- Short 2-foot power cord limits placement distance from an outlet
- Stores 6.5 gallons rather than providing continuous on-demand flow
- Maximum heating element output is limited to 1.44 kW
Good fit if
- You have an accessible 120V outlet near your sink
- You need a compact tank that can mount to a wall or sit on the floor
- You require freeze protection for low-temperature spaces
Skip if
- You need endless continuous hot water for high-demand fixtures
- You do not have an outlet within 2 feet of the installation space
- You require high-wattage heating above 1.44 kW
Verdict: Thermomate 6.5-Gallon Mini-Tank Water Heater delivers dedicated 120V point-of-use heating with simple plug-in installation. Its 6.5-gallon capacity and 1.44 kW element handle single-sink handwashing where continuous tankless capacity is unnecessary.
Suburban 6-Gallon Gas and Electric RV Water Heater
Best for: dual-fuel RV water heating with tank storage
- Fuel Type
- Electric, Gas
- BTU
- 12,000 BTU/h
- Wattage
- 1,440 W
- Capacity
- 6 Gallon
- Dimensions
- 12.69 x 12.69 x 19.19 in
- Use
- RV
View on Amazon: Suburban 6-Gallon Gas and Electric RV Water Heater
This 6-gallon RV water heater provides dual heating options using a 12,000 BTU gas system or an optional 1,440-watt electric element. You get recovery rates of 10.1 gallons per hour on gas and 6.1 gallons per hour on electric. Its porcelain-lined steel tank includes a replaceable anode rod for corrosion protection. It suits you if you need a reliable RV tank replacement that runs on campground power and gas.
Pros
- Dual power sources with 12,000 BTU gas and 1,440 W electric heating
- Recovery rates of 10.1 GPH on gas and 6.1 GPH on electric
- Porcelain-lined steel tank with replaceable anode rod drain
- Flue tube design slows combustion to improve heat transfer
Cons
- Requires a dedicated 12.75 x 12.75 x 19.19-inch cutout space
- Uses a 6-gallon storage tank instead of continuous tankless flow
- Heavier unit weight at 32.9 pounds empty
Good fit if
- You want the flexibility to heat water with campsite electric hookups or gas.
- You have space for a 12.75 by 12.75 by 19.19-inch RV cutout.
Skip if
- You prefer an on-demand tankless system with endless hot water.
- You lack an RV cutout designed for a 19.19-inch deep tank.
Verdict: Suburban 6-Gallon Gas and Electric RV Water Heater delivers flexible dual-fuel operation and durable porcelain tank construction for campers. It offers dependable 6-gallon storage heating whenever continuous on-demand output is not required.
Rheem 18kW 240V Electric Tankless Water Heater
Best for: whole-home 240V electric water heating
- Fuel Type
- Electric
- Flow Rate
- 4.4 GPM
- Wattage
- 18 kW
- Voltage
- 240 V
- Temperature Control
- ±1°F
- Dimensions
- 3.5 x 14.5 x 18.5 inches
View on Amazon: Rheem 18kW 240V Electric Tankless Water Heater
This whole-home electric tankless unit delivers up to 4.4 GPM on a 240V electrical supply. You get an 18 kW power draw with self-modulating technology that matches output to your demand. Dual copper immersion heating elements provide heating, while external digital controls let you set temperatures within 1 degree. It fits your space if you need steady indoor domestic hot water without a bulky storage tank.
Pros
- Up to 4.4 GPM flow rate
- Digital LED thermostat with 1-degree precision
- Self-modulating power technology
- Two field-serviceable copper immersion elements
- Standard bottom 3/4-inch NPT connections
Cons
- Requires high-capacity 240V electrical service
- Maximum 4.4 GPM flow rate limits heavy simultaneous demand
Good fit if
- You have a dedicated 240V electrical hookup capable of handling 18 kW.
- You want precise digital control over your output temperature.
- You need a compact wall-mounted unit for whole-home demand up to 4.4 GPM.
Skip if
- You need a propane or gas-powered heater instead of 240V electric.
- You require water flow higher than 4.4 GPM for multiple simultaneous fixtures.
Verdict: Rheem 18kW Tankless Electric Water Heater provides compact, on-demand heating with precise digital temperature control for 240V setups. Its self-modulating dual copper elements efficiently handle whole-home demands up to 4.4 GPM.
Ranein 65,000 BTU RV Tankless Water Heater
Best for: RV families needing high flow and remote monitoring
- Fuel Type
- Propane
- Flow Rate
- 3.9 GPM
- BTU
- 65,000 BTU
- Voltage
- 12V DC
- Temperature Control
- 95°F–124°F
- Certification
- CSA
The Ranein RV tankless water heater delivers 65,000 BTU of heat at 3.9 GPM. It runs on 12 V DC power and fits standard 15 x 15 x 15 inch RV cutouts. The unit includes a multi-function remote for monitoring gas and flow. Its oxygen-free copper heat exchanger supports stable temperatures. This model suits RV families needing reliable hot water for simultaneous use.
Pros
- 65,000 BTU burner for fast heating
- 3.9 GPM flow rate for strong pressure
- 12 V DC power for RV integration
- Multi-function remote with real-time data
- Anti-freeze function activates below 42.8°F
Cons
- Exterior door not included with unit
- Requires separate purchase of door kits
- No mention of WiFi or smart app control
Good fit if
- You need high flow for family showers
- You want remote monitoring of gas use
- You travel in cold climates needing freeze protection
Skip if
- You prefer a 6.5-gallon tank system
- You want a unit with a built-in door
- You need a 18kW electric model
Verdict: The Ranein 65k BTU RV Tankless Heater provides strong flow and remote monitoring for RV families. It fits standard cutouts but requires buying a door separately.
APUS 68,000 BTU RV Propane Water Heater
Best for: RVers replacing 6-gallon tanks needing remote control
- 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 power for on-demand hot water. It flows at 3.9 GPM and fits standard 15x15 inch RV compartments. This unit includes a remote control for temperature adjustments from inside your vehicle. It operates on 12V DC power and handles elevations up to 9,800 feet. It is designed to replace traditional 6 to 12-gallon tank heaters in travel trailers and motorhomes.
Pros
- 68,000 BTU propane burner provides up to 3.9 GPM flow
- Includes remote control for indoor temperature adjustment
- Fits standard 15x15 inch RV water heater openings
- Stable performance at elevations up to 9,800 feet
Cons
- Higher 68,000 BTU output may consume more propane than lower-BTU models
- Limited to 12V DC power, requiring compatible RV electrical systems
- No mention of WiFi or smart app connectivity
Good fit if
- You need a direct replacement for a 6-gallon RV tank heater
- You want to adjust water temperature from inside your RV
- You camp at high elevations above 5,000 feet
Skip if
- You require electric-only operation without propane
- You need a unit under 24 pounds for easy carrying
- You prefer a black exterior door option
Verdict: APUS RV Tankless Water Heater, 68k BTU offers reliable hot water for RVers who need a direct tank replacement with indoor remote control. It suits those traveling at high altitudes who prioritize consistent flow over maximum fuel efficiency.
VEVOR 42,000 BTU Propane RV Tankless Water Heater
Best for: RV owners wanting exterior washing and propane heating
- 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 propane tankless water heater supplies on-demand hot water for recreational vehicles. It provides 42,000 BTU of heating capacity and includes a 15-by-15-inch access door designed for camper cutouts. You get segmented combustion for seasonal temperature control, a remote controller, and a dedicated front outdoor outlet for washing gear outside. It suits RV owners who need continuous hot water both inside the cabin and outdoors.
Pros
- 42,000 BTU heating output running on propane
- Front outdoor water outlet for exterior cleaning
- Segmented combustion adjusts heat for seasonal temperature shifts
- Includes remote controller and LED smart touch display
Cons
- Requires a propane supply and does not run on electric power
- Rear chamber requires a 12.6 x 12.6 x 14-inch installation space
Good fit if
- You travel in an RV with an existing propane system.
- You want an exterior water connection to wash items outside.
- You have a 15-by-15-inch door cutout opening on your vehicle.
Skip if
- You need an electric-only heating system without propane tanks.
- You need an indoor unit for a standard stationary home.
Verdict: VEVOR 42,000 BTU Propane RV Tankless Water Heater delivers continuous hot water and exterior washing options for camper setups. Its segmented combustion helps maintain steady output across varying outdoor seasons.
Camplux 5L Portable Propane Water Heater
Best for: off-grid outdoor camping and remote washing
- Fuel Type
- Propane
- Flow Rate
- 1.32 GPM
- Installation Location
- Outdoor
- Certification
- CSA
- Dimensions
- 4.33 x 11.4 x 14.8 inches
- Use
- Camping, RV
The Camplux 1.32 GPM Portable Propane Water Heater is an outdoor tankless unit designed for off-grid and camping use. You get an on-demand flow rate of 1.32 gallons per minute fueled by propane. It ignites using two D batteries and operates at a low water pressure threshold of 3.0 PSI. At ten pounds with an integrated handle, it suits you if you need hot water away from electrical hookups.
Pros
- Low minimum water pressure start of 3.0 PSI
- Battery ignition requires no electrical power source
- Weighs 10 pounds with an integrated folding handle
- Includes shower head, hoses, and 5-foot gas regulator
Cons
- Rated strictly for outdoor installation
- Low flow rate of 1.32 GPM limits use to a single outlet
- Requires periodic replacement of two D batteries
Good fit if
- You need portable hot water for camping, washing pets, or off-grid chores.
- You operate water setups with low pressure such as gravity bags or 12V pumps.
- You want an outdoor propane unit that runs without electrical hookups.
Skip if
- You need an indoor water heater for permanent residential plumbing.
- You require flow rates higher than 1.32 GPM to run multiple fixtures.
Verdict: Camplux 1.32 GPM Portable Propane Water Heater delivers lightweight, off-grid water heating without requiring electrical hookups. Its 3.0 PSI activation pressure and outdoor-ready hardware make it a dependable choice for remote setups.
Orbek 60,000 BTU 12V RV Tankless Water Heater
Best for: RV travel at high elevations
- 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
This Orbek unit is an on-demand propane water heater built specifically for RVs and campers. It pairs a 60,000 BTU burner with a 12V DC power connection, delivering hot water between 95°F and 123°F. It features high-altitude operation up to 9,800 feet and includes a remote control plus a 150 PSI pressure-reducing valve. You get continuous hot water without maintaining a storage tank.
Pros
- 60,000 BTU burner delivers on-demand hot water
- High-altitude mode supports operation up to 9,800 feet
- Includes digital remote control with error code display
- Integrated 150 PSI pressure-reducing valve included
Cons
- Exterior door panels must be purchased separately
- Maximum water temperature is limited to 123°F
Good fit if
- You need a propane-fired heater running on a standard 12V DC RV electrical setup.
- You travel frequently through mountain elevations up to 9,800 feet.
- You want continuous hot water without managing a storage tank or anode rod.
Skip if
- You require an all-electric water heater rather than liquid propane.
- You need water temperatures to reach higher than 123°F.
Verdict: Orbek 60,000 BTU Propane RV Tankless Water Heater delivers steady on-demand heating at high elevations using 12V DC power. Its compact 12.7-inch cubic profile makes it a direct fit for compatible camper installations.
Specifications side by side
| Spec | Thermomate 6.5-Gallon Under-Sink Electric Mini-Tank | Suburban 6-Gallon Gas and Electric RV Water Heater | Rheem 18kW 240V Electric Tankless Water Heater | Ranein 65,000 BTU RV Tankless Water Heater | APUS 68,000 BTU RV Propane Water Heater | VEVOR 42,000 BTU Propane RV Tankless Water Heater | Camplux 5L Portable Propane Water Heater | Orbek 60,000 BTU 12V RV Tankless Water Heater |
|---|---|---|---|---|---|---|---|---|
| Fuel Type | Electric | Electric, Gas | Electric | Propane | Propane | Propane | Propane | Propane |
| Flow Rate | not specified | not specified | 4.4 GPM | 3.9 GPM | 3.9 GPM | not specified | 1.32 GPM | not specified |
| BTU | not specified | 12,000 BTU/h | not specified | 65,000 BTU | 68,000 BTU | 42,000 BTU | not specified | 60,000 BTU |
| Wattage | 1.44 kW | 1,440 W | 18 kW | not specified | not specified | not specified | not specified | not specified |
| Installation Location | not specified | not specified | not specified | not specified | not specified | Outdoor | Outdoor | not specified |
| Capacity | 6.5 Gallons | 6 Gallon | not specified | not specified | not specified | not specified | not specified | not specified |
| Voltage | 120V | not specified | 240 V | 12V DC | 12V DC | not specified | not specified | 12V DC |
| Temperature Control | 50°F to 149°F | not specified | ±1°F | 95°F–124°F | not specified | not specified | not specified | 95°F to 123°F |
| Certification | UL Listed | not specified | not specified | CSA | CSA | not specified | CSA | CSA |
| Dimensions | 17.7"H x 17.7"W x 14.6"D | 12.69 x 12.69 x 19.19 in | 3.5 x 14.5 x 18.5 inches | 15 x 15 x 15 in | 14.96 x 14.96 x 14.18 inches | 15 x 15 inches | 4.33 x 11.4 x 14.8 inches | 12.7 x 12.7 x 12.7 in |
| Use | Under Sink | RV | Whole House | RV | RV | RV | Camping, RV | RV |
| Features | not specified | not specified | not specified | not specified | not specified | not specified | Overheat Protection | not specified |
| Weight | 26.5 pounds | 32.9 pounds | 14.8 pounds | 15.5 pounds | 24 pounds | 26.9 pounds | 10 pounds | 20.5 pounds |
| Size | 6.5 Gallon | 6 Gallon | Small | not specified | not specified | 42000 BTU | Classic | not specified |
| Color | white,blue | Steel | Gray | Silver | White | White | White | Tankless, Silver Water Heater |
| Model | ES700 | 5239A | RTEX-18 | JF.JSQ19-10FWH-B-NA | AP-AWH-RV10W-NEW | TMRVQ-05010242 | AY132 | HRU-RG060-A1 |
If you also need chilled drinking water, the water cooler buying guide compares flow rates and temperature specs.
Frequently asked questions
What is the difference between a tankless heater and a mini-tank?
Tankless heaters provide continuous hot water on demand, while mini-tanks store a fixed volume for point-of-use needs. The Thermomate 6.5-Gallon unit is a mini-tank designed for single-sink installations. It uses a 1.44 kW element to heat stored water. This is suitable when you do not need unlimited flow. Tankless models, like the Rheem RTEX-18, heat water only when you turn the tap on.
Do I need a 240V circuit for an electric tankless water heater?
Yes, most whole-home electric tankless units require a 240V circuit. The Rheem RTEX-18 operates at 240V with 18kW of power. This voltage allows it to heat water quickly for multiple fixtures. Lower voltage models, like the 120V Thermomate, are limited to single-sink use. You must verify your home’s electrical capacity before installing a high-power electric unit.
Which propane RV water heater works best at high altitudes?
The Orbek 60,000 BTU model is designed for high-elevation travel. It uses 12V DC power and maintains steady output where other units may struggle. The APUS 68,000 BTU unit also suits high-altitude travelers who prioritize consistent flow. Both propane models offer reliable performance for RVers camping in mountainous regions or above sea level.
How much space does a tankless RV heater take up?
Tankless RV heaters are compact and fit standard cutouts. The Suburban 6-Gallon unit measures 12.7 inches cubed, similar in footprint to many tankless models. The Orbek and VEVOR units also share a 12.7-inch or 15-inch cubic profile. These dimensions allow for easy replacement of older storage tanks in most camper layouts without major modifications.
Can I use a portable propane heater for outdoor camping?
Yes, the Camplux 5L Portable Propane Water Heater is built for outdoor use. It weighs only 10 pounds and requires no electrical hookups. Its 3.0 PSI activation pressure allows it to work with standard camping water sources. The unit includes overheat protection and is designed for remote washing or off-grid camping scenarios where fixed plumbing is unavailable.
What fuel type is best for an RV replacement?
The best fuel depends on your existing infrastructure and travel habits. The Suburban unit offers dual-fuel gas and electric operation for flexibility. The APUS and VEVOR models use propane for independent heating. The Orbek unit uses propane but requires 12V DC power. Choose propane for off-grid capability or electric if you have reliable shore power access.
Is a remote control necessary for an RV tankless heater?
A remote control is helpful but not always required. The APUS unit features indoor remote control for adjusting settings from inside the camper. The Ranein model offers remote monitoring for added convenience. These features allow you to manage temperature without leaving the living area. However, many units, like the Camplux, operate via external controls suitable for outdoor installations.
What is the weight of a typical RV tankless water heater?
Tankless RV heaters generally weigh between 10 and 27 pounds. The Camplux portable unit is the lightest at 10 pounds. The VEVOR model weighs 26.9 pounds, while the Orbek unit is 20.5 pounds. The Suburban dual-fuel unit weighs 32.9 pounds. These weights are manageable for most RV installations and do not significantly impact vehicle balance compared to larger storage tanks.