6 Best Alternatives to the Reliance 6 6 SOMS K (2026)
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If you are searching for reliance 6 6 soms k alternatives, comparing exact measurements and electrical specifications is essential for your installation. The original Reliance 6 6 SOMS K provides a dedicated electric storage tank within a compact 14.1 by 14.1 by 15.3-inch white frame. However, you might prefer a different brand, an alternative 4-gallon capacity, or dual-fuel gas capability for an RV setup. Regional availability may also prompt a switch, as the original model is banned in ID.
We evaluated these 6 alternatives for 2026 because their published specifications closely overlap with the original Reliance heater. Each option matches core point-of-use requirements, featuring 4-gallon or 6-gallon capacities, standard 120V electric operation, and compact cabinets suited for under-sink or vehicle mounting. Whether you need a built-in thermostat knob, a specific height profile, or different fuel options, these models share the critical dimensions and storage specs needed to replace the original.
Our top pick: Reliance 6 Gallon Compact Electric Water Heater.
Comparing Reliance 6 6 SOMS K Alternatives
Suburban 6-Gallon Gas and Electric RV Water Heater
Suburban model 5239A is designed for RV use and includes 12,000 BTU gas heating alongside electric power, while the Reliance is electric only. Its steel housing measures 12.7 by 12.7 by 12.7 inches, giving it a smaller cubic footprint than the Reliance unit at 14.1 by 14.1 by 15.3 inches. However, it weighs significantly more at 32.9 pounds compared to the 1.6-ounce Reliance listing. You give up the simple indoor residential format of the Reliance. Choose this Suburban model if you need dual-energy gas and electric operation for a dedicated camper or recreational vehicle setup.
Thermomate 4-Gallon Point-of-Use Electric Water Heater
The Thermomate ES400 specifies a 4-gallon capacity and 120V electrical power with a 1.44 kW element designed for under-sink use. The Reliance unit offers a larger 6-gallon size. Thermomate measures 12.9 inches wide, 18 inches high, and 14.5 inches long, making it taller but narrower than the Reliance frame at 14.1 by 14.1 by 15.3 inches. It also weighs 19.8 pounds compared to the 1.6 ounces listed for the Reliance. You sacrifice two gallons of storage volume with this unit. Pick the Thermomate if you need a dedicated 120V heater for a single under-sink fixture where vertical cabinet clearance is available.
VEVOR 6-Gallon 1600W Electric Water Heater
The VEVOR FJI-POR-30S2 matches the 6-gallon capacity of the Reliance but specifies a 1600W heating element running on standard 120V power. Finished in gray, it stands 22.6 inches high, 14.2 inches wide, and 14.2 inches long. This makes it substantially taller than the 14.1-inch height of the Reliance. At 30.9 pounds, it is also much heavier than the listed 1.6-ounce Reliance heater. You lose the compact cube footprint of the original unit. Choose the VEVOR if you want a 6-gallon tank powered by 120V and have the vertical clearance required for its taller body.
GE 6-Gallon Under-Sink Mini Tank Water Heater
The GE GE06P08BAW provides a 6-gallon capacity and adds an explicit dial thermostat for temperature adjustments on a 120V connection. It comes in gray and measures 17.3 inches wide, 17.8 inches high, and 17.3 inches long, making it larger in every dimension than the 14.1 by 14.1 by 15.3-inch Reliance. It weighs 17 pounds compared to the 1.6-ounce Reliance specification. You give up the tighter exterior footprint of the Reliance to gain built-in thermostat controls. Select the GE if you need direct temperature control for an under-sink 6-gallon setup and have enough installation space.
Thermomate 4-Gallon Electric Mini Tank Heater
The Thermomate ES400B is an under-sink electric model designed for 120V hookups with a 4.0-gallon capacity. Compared to the 6-gallon Reliance, it delivers less storage volume. Its white enclosure measures 14.2 inches wide, 20.5 inches high, and 14.8 inches long, making it noticeably taller than the 14.1-inch Reliance height. The unit weighs 20 pounds versus the 1.6 ounces on the Reliance. You sacrifice tank capacity and vertical clearance. Choose this Thermomate model if you specifically require a 120V under-sink water heater and a 4-gallon volume meets the needs of your dedicated sink location.
Camplux 4-Gallon Electric Point-of-Use Heater
The Camplux ME40B provides 4.0 gallons of electric storage powered by a 1.44 kW element at 120V. In contrast, the Reliance holds 6 gallons. Dimensions for the Camplux are 14.5 inches wide, 12.9 inches high, and 14.5 inches long, giving it a lower height than the 14.1-inch tall Reliance. It weighs 19.8 pounds compared to the 1.6-ounce Reliance specification. While you give up 2 gallons of hot water volume, you gain a lower vertical clearance. Choose the Camplux if your installation area has limited vertical space and requires a standard 120V plug-in power connection.
Quick picks
Our 7 picks
Reliance 6 Gallon Compact Electric Water Heater
Best for: compact point-of-use electric hot water storage
- Capacity
- 6 Gallon
- Fuel Type
- Electric
- Dimensions
- 15.3 × 14.1 × 14.1 inches
- Weight
- 1.6 ounces
View on Amazon: Reliance 6 Gallon Compact Electric Water Heater
This compact electric water heater from Reliance gives you a 6-gallon storage capacity inside a cabinet-friendly footprint. The unit measures 15.3 inches in length, 14.1 inches in width, and 14.1 inches in height, finished in standard white. It suits you if you need a dedicated point-of-use electric reservoir for small spaces, provided you do not require stated wattage ratings or installation in regions with specific code restrictions like Idaho.
Pros
- Compact dimensions of 14.1 inches high, 14.1 inches wide, and 15.3 inches long
- Standard electric fuel type configuration
- 6-gallon water storage capacity
Cons
- Prohibited from distribution or use in Idaho
- Operating wattage and recovery ratings are not specified
- Specification listing contains conflicting 4.0-gallon and 6-gallon capacities
Good fit if
- You need an electric water heater with an exterior footprint under 16 inches
- You require a 6-gallon storage tank for small point-of-use setups
Skip if
- You need to install the unit in Idaho
- You require verified electrical wattage specifications prior to purchase
Verdict: Reliance 6 Gallon Compact Electric Water Heater delivers a 6-gallon electric reservoir in a 14.1 by 14.1 by 15.3-inch white frame for compact point-of-use installations.
Suburban 6-Gallon Gas and Electric RV Water Heater
Best for: RV installations needing dual-fuel heating options
- Fuel Type
- Electric
- Use
- RV
- Capacity
- 4.0 Gallons
- Dimensions
- 12.7 × 12.7 × 12.7 inches
- Weight
- 32.9 pounds
View on Amazon: Suburban 6-Gallon Gas and Electric RV Water Heater
The Suburban 6-Gallon Dual-Fuel RV Water Heater provides hot water using both gas and electricity. It features a 12,000 BTU gas burner alongside a 1,440-watt electric heating element. The porcelain-lined steel tank includes a replaceable anode rod that doubles as a drain. This unit suits you if you need mobile hot water for an RV setup requiring versatile power sources and faster gas-powered recovery.
Pros
- Dual-fuel heating with 12,000 BTU gas burner and 1,440W electric element
- Fast 10.1 gallons per hour recovery rate on gas
- Porcelain-lined steel tank with replaceable anode rod drain
- Backed by a 3-year tank limited warranty and 2-year unit warranty
Cons
- Requires a dedicated 12.75 by 12.75 by 19.19-inch cutout opening
- Weighs 32.9 pounds empty
- Lower 6.1 gallons per hour recovery rate when using electric only
Good fit if
- You need both LP gas and electric heating options for an RV setup.
- You want faster recovery rates than standard compact electric units provide.
Skip if
- You need a standard under-sink electric water heater for a home.
- You lack an exterior cutout opening configured for RV utility venting.
Verdict: Suburban 6-Gallon Dual-Fuel RV Water Heater delivers dependable dual-energy heating with high recovery speeds for camper installations. It stands out from compact residential alternatives by offering 12,000 BTU gas capability alongside electric power.
Thermomate 4-Gallon Point-of-Use Electric Water Heater
Best for: under-sink single-fixture point-of-use hot water
- Fuel Type
- Electric
- Wattage
- 1.44 kW
- Capacity
- 4 Gallons
- Voltage
- 120 V
- Temperature Control
- 50°F to 149°F
- Certification
- UL Listed
View on Amazon: Thermomate 4-Gallon Point-of-Use Electric Water Heater
This Thermomate 4-gallon electric mini-tank water heater supplies point-of-use hot water from a standard 120-volt outlet. It draws 12 amps with a 1.44-kilowatt heating element and adjusts from 50°F to 149°F. Measuring 14.5 by 14.5 by 12.9 inches, you can mount it to a wall or set it on the floor under a sink. It suits you if you need compact, dedicated hot water for a single faucet without modifying existing electrical lines.
Pros
- Plugs into a standard 120V outlet drawing 12 amps
- Corrosion-resistant Incoloy 800 stainless steel heating element
- Adjustable temperature range from 50°F to 149°F
- Flexible wall-mount or floor-mount installation options
Cons
- Short 2-foot power cord requires an adjacent electrical outlet
- Smaller 4-gallon capacity provides less volume than standard 6-gallon units
Good fit if
- You want a compact plug-in heater that runs on a standard 120V circuit.
- You need to mount your water heater under a sink on either the wall or floor.
- You only require 4 gallons of hot water storage for point-of-use demands.
Skip if
- You need a full 6-gallon capacity to match larger compact tanks.
- You do not have an electrical outlet within 2 feet of the installation spot.
Verdict: Thermomate 4-Gallon Electric Mini-Tank Water Heater delivers dedicated 120V point-of-use heating in tight under-sink spaces. Its 1.44 kW element and compact footprint make it a practical alternative when 6-gallon capacity is not required.
VEVOR 6-Gallon 1600W Electric Water Heater
Best for: point-of-use sinks and dedicated RV installations
- Fuel Type
- Electric
- Wattage
- 1600 W
- Capacity
- 6 gal
- Voltage
- 120 V
- Dimensions
- 22.6 x 14.2 x 14.2 inches
- Weight
- 30.9 pounds
This compact electric storage unit delivers 6 gallons of hot water via a standard 120-volt connection and a 1600-watt heating element. Measuring 22.6 by 14.2 by 14.2 inches, it fits under sinks or in RVs. It features 20 mm foam insulation, an enamel-lined tank, and a manual temperature control knob with an LED status indicator. You get a direct, point-of-use replacement for low-demand handwashing and light cleaning tasks.
Pros
- 1600W heating element runs on a standard 120V electrical supply
- 20 mm thick foam insulation reduces standby heat loss
- Enamel-lined interior tank resists heat and corrosion
- Includes dry-heating, overheating, overpressure protections, and IPX4 water resistance
Cons
- Measures 22.6 inches tall, needing substantial vertical clearance
- Relies on an analog knob without precise digital temperature readouts
Good fit if
- You need a 6-gallon electric tank powered by a standard 120V outlet
- You want built-in safety protections including IPX4 water resistance
Skip if
- You have under-sink clearance of less than 22.6 inches
- You require precise digital temperature controls rather than a rotary dial
Verdict: VEVOR 6-Gallon 1600W Point-of-Use Water Heater delivers reliable small-scale capacity on a standard 120V line. Its thick insulation and multiple safety protections make it a dependable choice for dedicated sink applications.
GE 6-Gallon Under-Sink Mini Tank Water Heater
Best for: point-of-use installations needing dial temperature control
- Fuel Type
- Electric
- Use
- Under Sink
- Capacity
- 4.0 Gallons
- Voltage
- 120V
- Features
- Thermostat
- Dimensions
- 17.3 × 17.3 × 17.8 inches
View on Amazon: GE 6-Gallon Under-Sink Mini Tank Water Heater
This 120V electric mini-tank water heater provides dedicated hot water for point-of-use spaces or inline boosting. It measures 17.8 inches high and weighs 17 pounds, making it suitable for under-sink cabinets, cabins, or laundry rooms. The unit features standard 1/2-inch NPT plumbing fittings, a stainless steel heating element, and a front control knob for temperature adjustments. You can mount it directly to a wall or set it on the floor.
Pros
- Adjustable control knob for temperature and power settings
- Stainless steel heating element resists rust and corrosion
- Standard 1/2-inch NPT connections support wall or floor mounting
- Operates on standard 120V electric power
Cons
- Requires at least 17.8 inches of vertical installation clearance
- Point-of-use capacity is not designed for whole-home demand
Good fit if
- You need a 120V point-of-use or booster heater with dial temperature control.
- You want flexible wall or floor installation using standard 1/2-inch NPT fittings.
Skip if
- You have less than 17.8 inches of vertical cabinet clearance.
- You require a non-electric fuel source such as gas or propane.
Verdict: GE 6 Gallon Mini Tank Water Heater with Thermostat provides straightforward point-of-use heating with simple knob-based temperature control. Its 120V setup and standard 1/2-inch NPT ports allow quick floor or wall placement.
Thermomate 4-Gallon Electric Mini Tank Heater
Best for: point-of-use sinks needing standard 120V power
- Fuel Type
- Electric
- Capacity
- 4 gallons
- Voltage
- 120V
- Temperature Control
- 68°F-140°F
- Certification
- UL Listed, CSA
- Dimensions
- 12.6"W x 12.4"D x 24.3"H
View on Amazon: Thermomate 4-Gallon Electric Mini Tank Heater
The Thermomate 4-Gallon Point-of-Use Electric Mini-Tank supplies dedicated hot water directly at your sink using a standard 120V corded plug. It features a 4-gallon glass-lined storage tank, an adjustable dial covering 68°F to 140°F, and standard 1/2-inch NPT fittings with an included relief valve. This compact unit fits under cabinets or mounts to a wall, making it a practical option if you want sink-side hot water without rewiring for 240V power.
Pros
- Plugs directly into a standard 120V electrical outlet
- Supports floor, shelf, or wall mounting configurations
- Includes a CSA-certified temperature and pressure relief valve
- Functions as an independent supply or an in-line booster
Cons
- Provides a 4-gallon storage capacity rather than 6 gallons
- Maximum thermostat setting caps at 140°F
Good fit if
- You want a plug-in 120V water heater for an individual sink.
- You need flexible installation on a wall, shelf, or floor.
- You plan to use the unit as an in-line booster.
Skip if
- You need a 6-gallon capacity for higher hot water volume.
- You require water temperatures exceeding 140°F.
Verdict: Thermomate 4-Gallon Point-of-Use Electric Mini-Tank delivers dedicated 120V hot water for single-sink setups or booster configurations. Its flexible mounting choices and included relief valve make it a straightforward choice when 4 gallons meets your point-of-use demands.
Camplux 4-Gallon Electric Point-of-Use Heater
Best for: point-of-use sinks with standard 120V outlets
- Fuel Type
- Electric
- Wattage
- 1.44kW
- Capacity
- 4.0 Gal
- Voltage
- 110V 120V
- Temperature Control
- 68°F to 140°F, 3 settings
- Certification
- UL Listed
View on Amazon: Camplux 4-Gallon Electric Point-of-Use Heater
The Camplux 4-Gallon Plug-In Mini-Tank Water Heater provides point-of-use hot water using standard 120-volt power. It draws 1.44 kW and comes with an attached 43.3-inch power cord. You can adjust the water temperature across three settings between 68°F and 140°F. The glass-lined tank fits under sinks or mounts to walls, making it a direct fit if you need modest capacity without running dedicated 240-volt electrical lines.
Pros
- Plugs into standard 120V outlet via 43.3-inch cord
- UL listed with 98% thermal efficiency
- Supports floor, shelf, or wall mounting with included bracket
- Includes freeze mode and 203°F overheat protection
Cons
- Holds 4.0 gallons, smaller than 6-gallon baseline models
- Limited to 3 preset temperature settings rather than continuous adjustment
Good fit if
- You have an available standard 120V outlet near your sink.
- You need flexible mounting options including wall, floor, or shelf placement.
- You want built-in freeze protection for colder locations.
Skip if
- You require 6 gallons of storage capacity for continuous hot water demands.
- You need single-degree precise temperature tuning.
Verdict: Camplux 4-Gallon Plug-In Mini-Tank Water Heater is a compact point-of-use option for sinks requiring standard 120V electrical hookups. It delivers 1.44 kW heating and versatile mounting options in tight spaces where larger units do not fit.
Specifications side by side
| Spec | Reliance 6 Gallon Compact Electric Water Heater | Suburban 6-Gallon Gas and Electric RV Water Heater | Thermomate 4-Gallon Point-of-Use Electric Water Heater | VEVOR 6-Gallon 1600W Electric Water Heater | GE 6-Gallon Under-Sink Mini Tank Water Heater | Thermomate 4-Gallon Electric Mini Tank Heater | Camplux 4-Gallon Electric Point-of-Use Heater |
|---|---|---|---|---|---|---|---|
| Fuel Type | not specified | not specified | Electric | Electric | not specified | Electric | Electric |
| Wattage | not specified | not specified | 1.44 kW | 1600 W | not specified | not specified | 1.44kW |
| Capacity | 6 Gallon | not specified | 4 Gallons | 6 gal | not specified | 4 gallons | 4.0 Gal |
| Voltage | not specified | not specified | 120 V | 120 V | not specified | 120V | 110V 120V |
| Temperature Control | not specified | not specified | 50°F to 149°F | not specified | not specified | 68°F-140°F | 68°F to 140°F, 3 settings |
| Certification | not specified | not specified | UL Listed | not specified | not specified | UL Listed, CSA | UL Listed |
| Dimensions | not specified | not specified | 14.5 x 14.5 x 12.9 inches | 22.6 x 14.2 x 14.2 inches | not specified | 12.6"W x 12.4"D x 24.3"H | 14.5" W x 14.5" H x 12.9" D |
| Use | not specified | RV | Under Sink | not specified | Under Sink | Under Sink | not specified |
| Features | not specified | not specified | not specified | not specified | Thermostat | not specified | not specified |
| Weight | 1.6 ounces | 32.9 pounds | 19.8 pounds | 30.9 pounds | 17 pounds | 20 pounds | 19.8 pounds |
| Size | 6 Gallon | 6 Gallon | 4 Gallon | 6 Gal | 6 Gallon | not specified | 4.0 Gal |
| Color | White | Steel | White | Gray | Gray | White | White |
| Model | 6-6-SOMS K | 5239A | ES400 | FJI-POR-30S2 | GE06P08BAW | ES400B | ME40B |
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Frequently asked questions
Which alternative to the Reliance 6 6 SOMS K works on a standard 120V electrical circuit?
Multiple options operate on standard 120V household electricity. The Thermomate ES400, Thermomate ES400B, VEVOR FJI-POR-30S2, GE GE06P08BAW, and Camplux ME40B all run on 120V lines. These units allow you to supply dedicated point-of-use fixtures without upgrading your service panel to higher-voltage circuits. Verify your outlet location before mounting one under a sink.
What is the shortest alternative for tight vertical cabinet spaces?
The Suburban 5239A and Camplux ME40B provide the lowest overall heights on this list. Suburban measures 12.7 inches tall, while the Camplux ME40B stands at 12.9 inches. In comparison, the Reliance model 6-6-SOMS K measures 14.1 inches in height. Choosing a unit under 13 inches tall gives you extra clearance for under-sink plumbing pipes.
Can you replace the Reliance 6 6 SOMS K with a 4-gallon water heater?
Yes, a 4-gallon unit can replace this model if your application only serves a single sink. Models like the Thermomate ES400, Thermomate ES400B, and Camplux ME40B offer 4.0-gallon capacity in compact configurations. They use 120V power and draw 1.44 kW, which provides sufficient hot water for light kitchen tasks while requiring less physical cabinet volume.
Which Reliance 6 6 SOMS K alternative includes a dedicated temperature thermostat dial?
The GE GE06P08BAW features an integrated thermostat dial for direct temperature adjustments. This gray unit measures 17.3 by 17.3 by 17.8 inches and connects through standard 1/2-inch NPT ports. It operates on 120V electrical service, letting you manually adjust hot water delivery directly at the front control knob without needing external inline temperature regulating valves.
How does the VEVOR 6-gallon heater compare in size to the Reliance 6 6 SOMS K?
The VEVOR FJI-POR-30S2 is noticeably taller than the Reliance unit. The VEVOR measures 22.6 inches in height, 14.2 inches in width, and 14.2 inches in length. By contrast, the Reliance 6-6-SOMS K stands 14.1 inches high with a 14.1 by 15.3-inch footprint. You will need at least 8.5 inches of extra vertical clearance to fit the VEVOR.
What is the lightest replacement option among these small point-of-use heaters?
The GE GE06P08BAW is the lightest unit among the 6-gallon options at 17 pounds. If you look at 4-gallon models, the Thermomate ES400 and Camplux ME40B weigh 19.8 pounds each, while the Thermomate ES400B weighs 20 pounds. Lighter mini-tank heaters place less structural stress on cabinet shelving or wall-mounting brackets during point-of-use installation.
Which alternatives offer 1.44 kW heating elements?
Both the Thermomate ES400 and the Camplux ME40B feature 1.44 kW heating elements designed for 120V electrical hookups. These 4-gallon models provide focused heating power for isolated sinks. The 1.44 kW rating ensures steady recovery on typical low-demand circuits, giving you dedicated hot water without the high electrical draw associated with full-sized whole-home storage tanks.