300L high-capacity solar water heater powered by photovoltaic panels – Caldera solar de 300L de alta capacidad impulsada por paneles fotovoltaicos

200L solar energy boiler for residential use – Caldera solar de 200L para uso residencial

120L solar-powered boiler for sustainable water heating – Caldera solar de 120L para calefacción de agua sostenible

80L solar boiler for homes, powered by solar panels – Caldera solar de 80L para viviendas, alimentada por paneles solares

Solar boiler

€1.099,00

Free shipping to mainland Spain, Portugal, and the Balearic Islands. Estimated delivery time: 3–4 weeks from the date of order.

NEX RS 80 l
Small but steamy. Perfect for compact homes or minimalist lifestyles. This boiler keeps things light, efficient, and hot where it counts.

What's in the box

1x Nexol Energy Controller (incl. protective cover)
1x Screw-in heating rod (hybrid = solar + grid) incl. sealing ring
1x 80 l boiler
1x Mounting set (4x Dowel and screw)

Save up to €458 yearly

Tank size:

80 l (Nexol RS-80) 120 l (Nexol RS-120) 200 l (Nexol RS-200) 300 l (Nexol RS-300)

Variant

Description

The Robinsun Solar Boiler makes heating water with solar energy easy, allowing you to save money in a smart and sustainable way.

Mount your solar panels and connect them to the controller.
Set up your boiler and connect it to your water supply.
Screw the heating rods from the controller into your boiler.
Plug the controller into a power socket for backup energy.

And that’s it! Your boiler starts heating water using solar energy. And if there’s not enough sun, it automatically switches to grid power, so you never run out of hot water.

No need for complex installations. Our system is self-installable, and with its smart controller, you stay in charge of your temperature and reheating times.

Clean, reliably energy – powered by Robinsun.

Solar boiler

€1.099,00

Control your energy – Fine-tune your system with our smart controller and 1 or 2 heating rods

Solar heating rod and smart controller for water boilers – Resistencia solar y controlador inteligente para calderas de agua"

Energy controller

Your smart solar brain

The controller keeps your water hot by automatically switching between solar energy and the grid, all based on your setup and preferences.

Solar-first setting
Set how much solar power is required before the system switches to the grid.

That way, you always use as much solar energy as possible, while never running out of hot water.

Personalized heating plan
Choose when and how often the system reheats.

For example, only in the evening or multiple times a day.

With 1 heating rod

Flexible and smart

One hybrid rod heats the water from the bottom of the tank.

Flexible
The hybrid rod can be powered by solar energy or the electrical grid, giving you full flexibility and hot water security, even on cloudy days.

Smart
If there's not enough solar energy, the system uses electricity from the grid as a backup.

You can customize when and how it kicks in, based on your preferred temperature, available solar power, and daily routine.

Ideal for smaller tanks like 80l or 120l.

With 2 heating rods

Fast and efficient

One hybrid rod heats the water from the top of the tank.
One solar-only rod heats the water from the bottom.

Fast
The hybrid rod heats the top of the tank first, so you get hot water faster, even if the full tank isn't heated yet.

Efficient
At the same time, the bottom part stays cooler longer, so your system can keep absorbing solar energy throughout the day.

Ideal for larger tanks like 200l or 300l.

Solar boiler

Control your energy – Fine-tune your system with our smart controller and 1 or 2 heating rods

Energy controller

Your smart solar brain

With 1 heating rod

Flexible and smart

With 2 heating rods

Fast and efficient

Store the heat – Pick your boiler and keep your home full of hot water all day

NEX RS 80 l

NEX RS 120 l

NEX RS 200 l

NEX RS 300 l

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