FRESH AIR AND NATURAL SOLAR WARMTH FOR YOUR HOME

Solar-powered ventilation that brings in fresh air and adds warmth from the sun — even when you are away.

Does this sound familiar in your home?

The air feels stuffy and heavy
You notice a stale smell when you walk in
Windows get damp, or traces of mould appear in the corners

This may be a sign that your home does not have enough effective air exchange.

Every day, moisture and pollutants build up indoors — from breathing, cooking, showering, cleaning and drying laundry.

Why is stagnant air a problem?

When air does not change enough, moisture, odours and everyday indoor pollutants remain trapped inside. Over time, the indoor climate becomes stuffy, condensation may form on the windows, and excess moisture creates a suitable environment for mould.

Poor air exchange does not only affect the condition of your home — it can also affect how you feel.

Opening a window helps for a moment, but it does not provide a lasting result. To keep the air fresh and prevent moisture from staying trapped indoors, air exchange needs to work regularly — even when you are not at home.

Fresh air without installing ductwork

Sol Fresh is a wall-mounted, solar-powered ventilation unit. It provides continuous air exchange, brings fresh air indoors and helps reduce problems caused by stagnant air and excess moisture.

During colder periods, the unit adds warmth from the sun. On summer nights, it can help bring cooler air into the room. It works automatically — even when you are not at home.

Sol Fresh is suitable for one room, a summer house, a country home or a smaller house, and does not require ductwork installation.

Smart ventilation that uses the sun at the right time

The Sol Fresh solar collector warms the incoming air in daylight and reaches its highest output in direct sunlight. Smart control adjusts the air exchange according to the sun, temperature and the needs of the room.

Quiet and efficient integrated fans ensure steady air movement and help bring fresh air into the room with very low electricity use.

The result is reliable ventilation that works automatically and uses about as much electricity as a phone charger.

Healthy indoor climate

Continuous fresh air exchange supports well-being, helps improve sleep quality, and reduces the risk of moisture build-up and mould growth.

Low energy costs

Sol Fresh uses solar energy for ventilation and additional heating, helping reduce reliance on conventional heating and keeping running costs low.

Longer building lifespan

Protects structures from moisture damage, prevents mold, and reduces the need for costly repairs.

A fresher indoor climate with solar energy

Sol Fresh is a smart ventilation solution developed in Estonia. It uses solar energy to help keep your home dry, fresh and energy-efficient.

In our climate, the biggest problem is often not the cold, but moisture that builds up in many buildings during the summer and starts causing problems by autumn. In autumn, the outdoor air becomes drier, while there is still enough sunlight available — this is when Sol Fresh works at its most effective.

The solar air heating collector is installed on the sunny side of the building, where it captures solar radiation even when the sun is low. Fresh air warmed inside the collector is directed through filters and air channels straight into the indoor space.

Sol Fresh is a local ventilation unit designed for ventilating and providing additional heat to one room or a smaller house.

A minimalist indoor unit that fits your interior

The indoor unit of Sol Fresh Premium is designed so it does not need to be hidden. Its minimalist design, finished with natural wood veneer, blends into the interior and adds a warm, natural look to the room.

The unit works quietly and automatically. Smart control keeps the air moving and adjusts ventilation according to the conditions and the selected operating mode.

The result is a fresher indoor climate, low energy use and technology that truly belongs in your home.

An outdoor unit that blends with the facade

The Sol Fresh solar air heating collector is the visible part of the system on the outside of the building, so its shape, colour and placement matter. These are chosen to help the collector blend as naturally as possible with the existing facade.

The dark surface of the collector captures solar energy and warms the fresh incoming air. The air is then directed through filters and air channels into the indoor space, where it supports ventilation and adds extra warmth during cooler periods.

The result is a ventilation solution that uses the sun intelligently while respecting the appearance of the building.

Feedback from customers

““Before installing Sol Fresh, the house felt very stuffy and the moisture had started to cause mould. Within a week, the room already felt much better, and the musty smell was gone. On sunny spring days, we no longer needed extra heating like before.”

““Extremely happy with both the product and the service. The unit quietly hums away in the corner, keeps the air moving and uses very little electricity. In a house, it’s really important to have air circulation and prevent moisture build-up. Right now, everything is under control.”

““Before installing Sol Fresh, our year-round home, converted from a summer house, had no ventilation. Now we honestly don’t understand how we ever lived without it. We no longer need to open the windows, CO₂ levels are under control, and the home feels really comfortable.”

Lower heating costs and humidity.

I´m using it for 8th year and in winter, at -5℃, the temperature in the collector rises up to +60℃. During the day, the indoor air in the 130 m² house warms up several degrees with the help of solar heating, and the windows no longer sweat. I have confidently recommended it to many acquaintances..”

Sol Fresh 80 Premium owner Lauri from Saaremaa, Estonia.

Example from the Nordic conditions: How Sol Fresh 80 Premium helps reduce heating costs in Estonia

The example below compares ventilation in an 80 m² house using two different solutions: standard fresh air vents and Sol Fresh 80 Premium.

Fresh air vents let outdoor air directly into the room. During colder periods, this means the heating system has to warm that air afterwards.

Sol Fresh 80 Premium works differently: the unit brings fresh air indoors, preheats it with solar energy and reduces ventilation-related heat loss with heat recovery.

This example shows how smart solar-powered ventilation can reduce the energy cost caused by ventilation when compared with standard fresh air vents.

Is Sol Fresh right for you?

Sol Fresh is a good fit if:

your home often feels stuffy or heavy
you want ventilation with low running costs and lower heating bills
condensation forms on the windows, or the air still feels stale even after airing the room out.
the house does not have functioning ventilation, or the existing air exchange is not sufficient
you want to bring fresh air into the room without building a ducted ventilation system
you are looking for a unit that works automatically and does not need daily attention
you want a solution that is also suitable for a summer house, country home or a room that is used less often

Sol Fresh works both in everyday use and when the home is left empty for periods of time.

We develop and produce in Estonia with the aim of maximizing the use of solar energy. We measure our climate impact and reduce our CO₂ footprint.”

Our Sol Fresh models come with a 2-year manufacturer’s warranty and maintenance support.

We recommend replacing the air filters at least once a year to keep the unit working efficiently and the air clean.

We follow a circular economy approach to waste management and always accept our products for disposal free of charge. We apply principles of reuse in creating new products.

Sol Fresh Basic

A simple ventilation solution that helps keep the room fresh and free from excess moisture — with no electricity cost.
During the day, solar-heated fresh air is directed into the room, while also providing additional warmth.

How it works:

Solar radiation activates the fan
Outdoor air is warmed inside the collector
Warm, fresh air is directed into the room by the integrated fan
The resulting air movement and pressure difference help move moist air out of the room — through existing ventilation openings and natural air paths, such as bathroom ventilation, a kitchen extractor or a chimney
Recommended accessory: smart bathroom fan

A simple ventilation device with a solar air heating collector and an electricity generating element.
Air exchange only during the day.
Suitable for additional heating of up to 120 m2 rooms.
Electric power independent (Off-grid).
Zero energy cost.
2-year manufacturer’s warranty
Configurable with one function.
Collector internal temperature sensor.

Outdoor temperature sensor.
Room temperature sensor.
Heat recovery with a plate heat exchanger.
Passive cooling.
Digital control panel.
Wifi

Price from 1 300 €

Sol Fresh Premium

A ventilation unit with heat recovery that works around the clock, keeping the indoor climate fresh and moisture under control.

In addition to the Basic version:

keeps warmth indoors thanks to heat recovery
works even without sunlight — at night and in cloudy weather
allows more precise and convenient control

How it works:

Solar radiation activates the fans in heating or cooling mode.
Outdoor air is warmed inside the collector
The unit uses five integrated fans to bring fresh air indoors and extract used air from the room.
Part of the heat from the outgoing air is transferred to the incoming air.
Recommended accessory: smart bathroom fan

A ventilation unit ideal for providing additional heating in rooms where heat-recovery ventilation and natural cooling are also needed.
Air exchange is available 24/7
Suitable for additional heating of up to 120 m2 rooms.
Electrically powered (24W)
Minimal energy consumption
2-year manufacturer’s warranty
Adjustable multiple functions
Collector internal temperature sensor.
Room temperature sensor
Heat recovery with a plate heat exchanger.
Passive cooling.
Digital control panel.
Wifi

Prices from 2 200 €

Sol Fresh Basic

Ideal for maintaining a moisture-free indoor climate with zero energy costs for smaller buildings. Fresh air heated by solar energy is directed into the room for additional heating during the day.

✓ A simple ventilation device with a solar air heating collector and an electricity generating element.
✓ Air exchange only during the day.
✓ Suitable for additional heating of up to 120 m2 rooms
✓ Electric power independent (Off-grid).
✓ Zero energy cost.
✓ 5-year manufacturer’s warranty.
✓ Configurable with one function.
✓ Collector internal temperature sensor.
✗ Outdoor temperature sensor.
✗ Room temperature sensor.
✗ Heat recovery with a plate heat exchanger.
✗ Passive cooling.
✗ Digital control panel.
✗ WiFi.

Prices starting from 1300 €.

Sol Fresh Premium

An environmentally friendly ventilation solution. Ideal for providing additional heating to rooms, with the added benefit of heat recovery and natural cooling.

✓ Smart ventilation unit with a solar air heating collector and passive cooling

✓ Air exchange is available 24/7
✓ Suitable for heating rooms up to 120 m2
✓ Electrically powered (24W)
✓ Minimal energy consumption
✓ 5-year manufacturer’s warranty.
✓ Adjustable multiple functions
✓ Collector internal temperature sensor.
✓ External air temperature sensor
✓ Room temperature sensor
✓ Plate heat exchanger heat recovery
✓ Passive cooling
✓ Digital control panel
✓ Wifi