Electrolux Electric Tank Water Heater vs Electrolux 8kW Tankless Water Heater (2026): Key Differences
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Choosing between the electrolux electric tank water heater vs 8kw tankless water heater depends on your flow needs and electrical setup. Both units are compact, CSA-certified point-of-use heaters designed for under-sink installation. The main difference lies in storage versus instant heating. One uses a 1.5-gallon tank to keep water ready, while the other heats water on demand with an 8kW element. This guide compares their specs to help you decide which fits your space and usage patterns.
Key differences
| Aspect | Electrolux 1.5 Gal 120V Under Sink Heater | Electrolux 8kW Under Sink Tankless Water Heater |
|---|---|---|
| Capacity | 1.5 gallons | Tankless (no storage) |
| Voltage | 120 V | 240 V |
| Wattage | Not listed | 8 kW |
| Flow Rate | Not listed | 1.97 GPM |
| Dimensions | 10.1 x 12.3 x 10.1 inches | 6.9 x 8.1 x 2.5 inches |
| Warranty | 6-year tank, 2-year electrical | 1-year warranty |
Which one should you choose?
Choose Electrolux 1.5 Gal 120V Under Sink Heater if
- You need hot water immediately after the unit has heated up, without waiting for flow to stabilize.
- Your available electrical outlet is a standard 120V circuit without a dedicated 240V breaker.
- You prefer a longer tank warranty for long-term reliability.
Choose Electrolux 8kW Under Sink Tankless Water Heater if
- You want instant hot water with no standby heat loss from a storage tank.
- You have a dedicated 240V circuit and need a higher flow rate of 1.97 GPM.
- You want a unit that takes up 90% less space under your sink.
Verdict: Choose the 1.5-gallon tank model if you are limited to 120V power or want stored hot water ready for intermittent use. Pick the 8kW tankless unit if you have a 240V circuit and need continuous hot water for faster sink usage. Both are CSA certified for safe under-sink operation.
Tank vs Tankless: Key Differences
Capacity and Storage
Electrolux 1.5 Gal 120V Under Sink Heater stores 1.5 gallons of preheated water in a compact tank. This allows you to draw multiple uses without waiting, though the tank reheats after depletion. The Electrolux 8kW Under Sink Tankless Water Heater has no storage tank. It heats water only when you turn the tap. This design eliminates standby heat loss but means flow depends entirely on current heating power. If you need a buffer for back-to-back sinks, the tank model provides immediate reserve water. The tankless unit offers endless hot water as long as the circuit holds.
Voltage Requirements
The Electrolux 1.5 Gal 120V Under Sink Heater operates on standard 120V outlets. It includes a 3.6 ft power cord, allowing simple plug-in installation without special wiring. This makes it accessible for most existing under-sink circuits. In contrast, the Electrolux 8kW Under Sink Tankless Water Heater requires a dedicated 240V circuit. It draws significant power to heat water instantly. You must ensure your electrical panel can support a 40A breaker for this unit. If your kitchen or bathroom lacks a 240V line, the 120V tank model is the only viable option without an electrician.
Flow Rate and Output
The Electrolux 8kW Under Sink Tankless Water Heater delivers a stable flow of 1.97 GPM with a 77°F temperature rise. It reaches a maximum output temperature of 104°F. This continuous flow is ideal for rinsing dishes or handwashing without running out of hot water. The Electrolux 1.5 Gal 120V Under Sink Heater does not list a specific flow rate. Its output is limited by its small 1.5-gallon capacity and lower voltage heating element. Once the stored hot water is used, the unit must reheat the cold water entering the tank, causing a delay. The tankless model provides consistent, high-volume flow.
Dimensions and Footprint
Both units are designed for tight under-sink spaces, but their shapes differ. The Electrolux 1.5 Gal 120V Under Sink Heater measures 10.1 x 12.3 inches. Its cylindrical or rectangular tank form factor occupies more vertical or horizontal space depending on orientation. The Electrolux 8kW Under Sink Tankless Water Heater is significantly more compact, measuring just 6.9 x 8.1 x 2.5 inches. It takes up 90% less space than traditional heaters. If you have a very narrow cabinet or limited clearance, the tankless unit’s slim profile allows it to fit where the larger tank model might not.
Efficiency and Energy Use
The Electrolux 8kW Under Sink Tankless Water Heater boasts 99% heating efficiency. It heats water only when you use it, eliminating the energy waste associated with keeping a tank hot 24/7. This design can save up to 60% on water heating costs for single-faucet use. The Electrolux 1.5 Gal 120V Under Sink Heater minimizes heat loss through its tank construction, but it still maintains a reservoir of hot water. This standby mode consumes energy even when the tap is off. For maximum energy savings in a low-use scenario, the tankless unit’s on-demand operation is superior.
Which Electrolux Heater Fits Your Sink
Users needing hot water instantly
The 8kW tankless model delivers up to 1.97 gallons per minute with a 77°F temperature rise. It heats water on demand, providing continuous flow for handwashing or dish rinsing without waiting for a tank to reheat. This unit is ideal for single faucet use where immediate hot water is essential.
Those with 120V outlets only
This 1.5-gallon heater operates on a standard 120V circuit, allowing easy plug-in installation without dedicated high-voltage wiring. The stored hot water ensures availability even if the circuit is shared. Its compact 10.1 x 12.3 inch size fits under most sinks, making it a practical choice for existing electrical setups.
Renters wanting minimal setup
You can install this unit in minutes using a standard outlet and the included 3.6 ft power cord. No special wiring or gas lines are required. The 6-year tank warranty offers long-term reliability, and the durable construction resists corrosion. It is a DIY-friendly solution for temporary or rental spaces.
Users prioritizing space efficiency
Measuring just 6.9 x 8.1 x 2.5 inches, this tankless heater takes up 90% less space than traditional tanks. It features anti-scale protection and six safety mechanisms, including dry-fire prevention and IPX4 waterproofing. This compact design maximizes under-sink storage while maintaining high energy efficiency for daily sink tasks.
The products compared
Electrolux 1.5 Gal 120V Under Sink Heater
Best for: single sink hot water needs
- Fuel Type
- Electric
- Capacity
- 1.5 Gallon
- Voltage
- 120V
- Certification
- CSA
- Dimensions
- 10.1 x 12.3 in
- Use
- RV, Under Sink
View on Amazon: Electrolux 1.5 Gal 120V Under Sink Heater Affiliate link
This Electrolux unit is a 1.5-gallon electric tank water heater designed for under-sink installation. It runs on a standard 120V outlet and includes a 3.6 ft power cord for plug-in setup. The compact 10.1 x 12.3 inch size fits tight spaces. It features CSA certification and overheat protection. This model suits users needing point-of-use hot water for small areas like kitchens or offices.
Pros
- 1.5-gallon capacity provides ready hot water
- Standard 120V plug-in installation requires no special wiring
- Compact 10.1 x 12.3 inch dimensions fit under most sinks
- CSA certified with overheat protection for safety
Cons
- 1.5-gallon capacity limits continuous hot water supply
- Requires a nearby 120V outlet for operation
- Limited to point-of-use applications only
Good fit if
- You need hot water for a single sink
- You have a standard 120V outlet under the sink
- You want a plug-in unit without professional wiring
Skip if
- You need hot water for multiple fixtures
- You require a higher voltage 240V connection
- You need a larger tank capacity
Verdict: Electrolux 1.5 Gal 120V Under Sink Heater is a compact solution for single-sink hot water needs. It fits well in tight spaces where standard electrical outlets are available.
Electrolux 8kW Under Sink Tankless Water Heater
Best for: Single sink hot water needs
- Fuel Type
- Electric
- Flow Rate
- 1.97 GPM
- Wattage
- 8 kW
- Voltage
- 240V
- Certification
- CSA
- Dimensions
- 6.9" x 8.1" x 2.5"
View on Amazon: Electrolux 8kW Under Sink Tankless Water Heater Affiliate link
The Electrolux 8kW unit is a compact, electric tankless heater designed for under-sink installation. It delivers 1.97 GPM at 240V with a 77°F temperature rise. The device measures 6.9 by 8.1 by 2.5 inches, fitting tight spaces. It reaches a maximum temperature of 104°F. This model is optimized for single faucet use, such as handwashing or dish rinsing, rather than whole-house supply.
Pros
- Delivers 1.97 GPM flow rate for steady hot water
- Compact dimensions of 6.9 x 8.1 x 2.5 inches fit tight spaces
- 99% heating efficiency reduces energy waste
- CSA certified with IPX4 waterproof rating
Cons
- Maximum temperature limited to 104°F
- Not suitable for shower use due to flow constraints
- Requires a dedicated 40A circuit for installation
Good fit if
- You need hot water for a single under-sink faucet
- You have limited space for a traditional tank heater
- You want a compact unit with CSA safety certification
Skip if
- You require hot water for a shower
- You cannot install a dedicated 40A circuit
- You need a maximum water temperature above 104°F
Verdict: Electrolux 8kW Tankless Under Sink is a practical solution for single-sink applications where space is tight. It suits users who need reliable, instant hot water for handwashing or dish rinsing without the bulk of a storage tank.
Specifications side by side
| Spec | Electrolux 1.5 Gal 120V Under Sink Heater | Electrolux 8kW Under Sink Tankless Water Heater |
|---|---|---|
| Fuel Type | Electric | Electric |
| Flow Rate | not stated | 1.97 GPM |
| Wattage | not stated | 8 kW |
| Capacity | 1.5 Gallon | not stated |
| Voltage | 120V | 240V |
| Certification | CSA | CSA |
| Dimensions | 10.1 x 12.3 in | 6.9" x 8.1" x 2.5" |
| Use | RV, Under Sink | Under Sink |
| Features | not stated | WiFi |
| Color | 1.5 Gallon | Pearl White |
| Model | EES015 | 8kW |
Frequently asked questions
Can I install the 8kW tankless heater on a standard 120V outlet?
No, the Electrolux 8kW Under Sink Tankless Water Heater requires a 240V electrical connection. This higher voltage is necessary to achieve its full 8 kW heating capacity. You must ensure your under-sink circuit supports 240V before installation. The 1.5-gallon tank model, by contrast, operates on a standard 120V outlet, making it compatible with most existing household wiring without upgrades.
Which unit is smaller and fits better in tight spaces?
The Electrolux 8kW Tankless model is more compact in height and width. It measures 6.9 inches in height and 8.1 inches in both width and length. The 1.5-gallon tank heater is slightly larger, standing 12.3 inches tall with a 10.1-inch square footprint. If you have limited vertical clearance under your sink, the tankless unit offers a tighter fit.
Is the Electrolux 8kW unit suitable for a shower?
No, this unit is designed for single-sink applications only. It is best for handwashing or dish rinsing where flow rates are lower. The 8kW model provides up to 1.97 gallons per minute with a 77°F temperature rise. This flow rate is generally insufficient for a standard shower, which typically requires higher flow and heat output to maintain comfort.
What is the difference in water delivery between the two models?
The 1.5-gallon tank heater provides stored hot water that depletes after use, requiring time to reheat. The 8kW tankless model heats water instantly as it flows. It delivers continuous hot water at up to 1.97 gallons per minute. You will not run out of hot water with the tankless unit, but you must manage flow rate to maintain temperature.
Do I need a dedicated circuit for the 8kW heater?
Yes, the 8kW model typically requires a dedicated 240V circuit due to its high power draw. Standard 120V circuits cannot support 8 kW of heating power. Always consult a licensed electrician to verify your home’s electrical capacity. The 1.5-gallon tank model uses less power and often works on existing 120V circuits, but professional installation is still recommended.
Which heater is better for a guest bathroom sink?
The Electrolux 8kW Tankless Water Heater is ideal for guest bathrooms. It provides instant hot water without waiting for a tank to reheat. This is convenient for occasional use. The compact 8.1-inch width fits easily under most vanity sinks. The 1.5-gallon tank model is also suitable but takes up more vertical space and may reheat slowly if used frequently.