Ariston Andris Lux 15L 3kW Undersink Electric Water Heater

Ariston Andris Lux 15L 3kW undersink water heater

The Ariston Andris Lux 15L 3kW Undersink Electric Water Heater is a compact unvented electric storage water heater designed for installations where hot water needs to be available close to the point of use.

With a 15-litre storage capacity and 3kW heating element, the Andris Lux 15 is well suited to kitchens, bathrooms, utility rooms, cloakrooms, offices and other applications requiring a compact undersink hot water solution.

The 15L undersink model is identified by Ariston product code 3100309. It has a compact wall-mounted format measuring approximately 360 × 360 × 346 mm and a stated heat-up time of around 18 minutes.

Key Features

• 15-litre hot water storage capacity
• 3kW heating element
• Undersink installation
• Unvented electric storage water heater
• Approximately 18-minute heat-up time
• Titanium-enamelled storage tank
• Copper heating element
• Adjustable mechanical temperature control
• Heating indicator lamp
• Compact wall-mounted design
• ErP energy efficiency class B
• ½-inch water connections
• White finish
• Ariston product code 3100309

Compact 15L Undersink Design

The Ariston Andris Lux 15L undersink water heater is designed to fit beneath a sink, making use of otherwise unused cabinet space.

Its compact dimensions of approximately 360mm high × 360mm wide × 346mm deep make it suitable for installations where available space is limited.

This configuration is particularly useful where the water heater needs to be positioned close to a kitchen sink, washbasin or other point of use.

3kW Heating Performance

The Andris Lux 15 uses a 3kW heating element and has a stated heat-up time of approximately 18 minutes under the manufacturer’s specified conditions.

The 15-litre tank stores heated water so that hot water can be available at the point of use without relying on an instantaneous high-flow water heating system.

The actual recovery time can vary depending on incoming water temperature, temperature setting and installation conditions.

Titanium-Enamelled Tank

The storage tank uses a titanium-enamelled construction, designed to provide a durable internal surface for stored hot water.

The Andris Lux range also uses a copper heating element, while the unit incorporates insulation around the storage tank to help limit heat loss.

Adjustable Mechanical Temperature Control

The Ariston Andris Lux 15 features a straightforward mechanical temperature control dial, allowing the user to adjust the water temperature according to the application.

The unit also includes an “E” setting intended to optimise comfort and energy use.

Where Can the Ariston Andris Lux 15L Be Used?

The compact 15-litre undersink configuration can be considered for a range of point-of-use hot water applications, including:

• Kitchen sinks
• Bathroom washbasins
• Utility rooms
• Cloakrooms
• Offices
• Small commercial facilities
• Guest accommodation
• Workshops
• Remote washbasins
• Other suitable point-of-use installations

Ariston’s own guidance identifies the Andris Lux 15 as a suitable model for a bathroom sink application.

Ariston Andris Lux 15L Specifications

Specifications can vary by regional configuration, so always check the technical documentation and installation requirements applicable to the destination country before installation.

Why Choose a 15L Undersink Water Heater?

A 15-litre undersink electric water heater can be useful when you need a dedicated hot water supply close to a sink without installing a large central storage cylinder.

The Ariston Andris Lux 15L 3kW combines:

• Compact dimensions
• 15L stored hot water
• 3kW heating power
• Rapid approximately 18-minute heat-up
• Undersink installation
• Adjustable temperature control
• Titanium-enamelled tank
• Ariston engineering and product support

This makes it a practical option for suitable small point-of-use hot water installations.

Installation

The Ariston Andris Lux 15L is an unvented water heater, so installation should be carried out by a suitably qualified installer in accordance with the applicable national plumbing, electrical and safety regulations.

Before purchasing, confirm:

1. Available cabinet or installation space
2. Electrical supply requirements
3. Water pressure requirements
4. Suitable hot and cold-water connections
5. Appropriate safety and pressure-control components
6. Local installation regulations
7. Whether an expansion kit or other accessories are required for the particular installation

Expansion kits for the Andris Lux range may be sold separately depending on the installation configuration.

Ariston Andris Lux 15L vs 30L

The 15L Andris Lux is designed for smaller point-of-use requirements, particularly around sinks and washbasins.

The 30L Andris Lux provides a larger stored-water capacity and is better suited to applications with greater hot-water demand.

Ariston’s guidance specifically associates the Andris Lux 15 with sink applications, while the Andris Lux 30 is listed for higher-demand applications such as a shower and sink.

Ariston Andris Lux 15L vs 2kW Version

If choosing between the 15L Andris Lux variants, the 3kW version provides a higher heating power than the 2kW version.

This can be particularly relevant where faster recovery is important. The 3kW model has an approximately 18-minute heat-up time under stated conditions.

Frequently Asked Questions

Is the Ariston Andris Lux 15L an instantaneous water heater?

No. The Andris Lux 15L is a storage water heater with a 15-litre internal tank. The water is heated and stored before use.

What is the power rating?

The Ariston Andris Lux 15L undersink model has a 3kW heating element.

How long does the Andris Lux 15L take to heat?

The stated heat-up time is approximately 18 minutes, although actual performance depends on incoming water temperature and operating conditions.

Is this the undersink version?

Yes. Ariston product code 3100309 identifies the 15L 3kW undersink model. The comparable 15L oversink model uses product code 3100308.

How much water does it store?

The unit has a 15-litre storage capacity.

Can it be installed under a kitchen sink?

The product is specifically designed as an undersink water heater, subject to suitable installation conditions and applicable regulations.

Does it have temperature control?

Yes. The unit uses an adjustable mechanical temperature control and includes an “E” setting.

What is the energy rating?

The 15L 3kW undersink version is listed with ErP energy efficiency class B.

Buy Ariston Andris Lux 15L 3kW Undersink Water Heater

The Ariston Andris Lux 15L 3kW Undersink Electric Water Heater is designed for compact point-of-use hot water applications where a 15-litre storage capacity and 3kW heating element are appropriate.

When ordering from EuroFuelSupply, check the product configuration, price, availability, delivery destination and installation requirements for your European location before purchase.