SOL Navitas

19/10/2026

A home, office, warehouse, farm building and community centre may look completely different, but they all need air exchange suited to how they are actually used.

The appropriate ventilation approach depends on more than the building type. Its size, occupancy, moisture load, existing airflow routes and available energy all matter.

That is why one system does not fit every space:

• Sol Fresh Basic supports autonomous daylight ventilation in suitable smaller or occasionally used buildings.
• Sol Fresh Premium provides continuous, controlled ventilation for homes and regularly occupied spaces.
• Solar Smart AHU offers site-specific ventilation and automation for larger or more complex buildings.

Different buildings. Different requirements. An appropriately designed solution.

Does your building have stale air, excess moisture or insufficient ventilation? Send us:

- A photograph
- What the space is used for
- How often it is occupied
- The problem you are experiencing

We’ll help identify an appropriate starting point.

03/10/2026

The sun can support a building in more ways than one.
Alongside producing electricity through photovoltaic panels, solar energy can also be used to add warmth to incoming fresh air.
SOL Navitas solar air-heating solutions use available sunlight to support ventilation and bring fresh air indoors with additional natural warmth. Depending on the selected system, this can support regular air exchange, indoor comfort and moisture management.
A simple idea powered by a resource already reaching your building.

Discover solar ventilation on our website

25/09/2026

Wi-Fi password? Found it.

Air conditioning? Working.

Fresh air? That turned out to be much harder to find.

During an 8,000 km road trip across Europe, we stayed in everything from simple hotel rooms to an idyllic cabin near the French, Spanish border.

The cabin appeared perfect: a peaceful mountain setting, a grassy area for our toddler and a heat pump to keep the room cool.

But by night, the air inside felt completely still. The windows could not be opened because of mosquitoes, there was no working ventilation, and the shower corner contained visible mould.

It was an uncomfortable reminder of something that is often misunderstood:

Air conditioning is not the same as ventilation.

An air-to-air heat pump can heat, cool and recirculate indoor air, but fresh outdoor air still needs a way in, and humid, stale air needs a way out.

The simplest room with suitable airflow gave us a better night’s sleep than some of the more luxurious accommodation we visited.

So, before your next stay, don’t only check for Wi-Fi, parking and air conditioning. Ask whether the room has working ventilation, especially in bathrooms and other moisture-prone spaces.

And for accommodation providers: good air exchange is not only about comfort. It helps manage moisture, protect the building and create a better experience for guests.

Perhaps it really is time for Booking com and Airbnb to add a “ventilation” filter.

16/09/2026

Basic or Premium, which Sol Fresh solution is right for your building?

Both systems bring filtered fresh air indoors, use solar energy to preheat the incoming air, support regular air exchange and help reduce excess moisture. The difference lies in when and how your building needs ventilation.

Sol Fresh Basic is designed for cottages, garages, workshops and other occasionally used buildings.

• Operates autonomously during daylight
• Requires no grid electricity
• Brings solar-warmed fresh air indoors
• Zero electricity cost

Sol Fresh Premium is designed for homes and regularly used buildings where ventilation must continue around the clock.

• Operates 24/7, including at night and during cloudy weather
• Heat recovery
• Digital control and Wi-Fi
• Passive night cooling
• Only 24 W electricity consumption

Different systems. Shared Sol Fresh benefits.

Not sure which one suits your property? Send us a photograph and a short description of your building, including how often it is used. We’ll help you identify a suitable solution.

11/09/2026

Closed doesn’t mean stable.

Basements, underground garages, shelters and other enclosed spaces can remain unattended for weeks or months, but the conditions inside continue to change.

Moisture can accumulate, condensation can form and air quality can deteriorate. And simply bringing in more outdoor air is not always the answer. If the air enters under unsuitable conditions, it may make the moisture problem worse.

Effective ventilation depends on understanding the space: how it is used, its moisture load, existing airflow routes, occupancy and the energy available.

These three Estonian projects show why every space needs its own solution:

📍 At Kihlepa community centre, solar-warmed fresh air helps remove excess moisture and maintain more suitable conditions for storing the community’s winter supplies.

📍 In Lohusalu, an autonomously operating Sol Fresh 50 Basic uses solar energy for air exchange and warming the incoming air in an underground garage that was damp and prone to mould.

📍 At Pimekoobas, a site-specific solution uses Solar Smart control to adjust ventilation according to operating cycles, available natural conditions and rising CO₂ levels when people enter.

The challenge may be similar- but the correct solution depends on the building.

Nature first. Grid energy only when it is genuinely needed.

Does your basement, shelter, warehouse or another enclosed space have a moisture or ventilation problem? Tell us how the space is used, and we’ll help identify a suitable approach.

Read our latest article, “Enclosed spaces need to breathe too,” at solnavitas.eu or through the link in our bio.

07/09/2026

Kui hoonet tabab üleujutus, tuleb korraga tegeleda väga paljuga. Kui vesi lõpuks taandub, võib tunduda, et suurim mure on möödas. Tegelikult vajab ka hoone kuivatamine läbimõeldud samme, et niiskusprobleemid ei hiiliks ligi alles hiljem.

Pealtnäha kuiv sein või põrand ei tähenda alati, et konstruktsioon on seest kuiv. Liiga vara alustatud remont võib niiskuse uute kihtide alla sulgeda ning probleemid võivad ilmneda alles kuude pärast.

Panime uues blogipostituses kirja, mida pärast nähtava vee eemaldamist silmas pidada, kuidas hoone kuivamist hinnata ning milline roll on aktiivsel kuivatamisel ja ventilatsioonil.
Jagame ka oma kogemust Valencia üleujutuses kahjustatud elamu kuivatamisel.

Loe lähemalt 👇

Niiskus majast välja: üleujutusjärgne kuivatamine ja ventilatsioonSolNavitasseptember 6, 2026Blog Post Kui vesi on tunginud keldrisse või eluruumidesse, on esimene eesmärk nähtav vesi hoonest välja saada. Sellega kuivatamine aga ei lõpe. Niiskus võib jääda põrandatesse, seintesse ja teis...

31/08/2026

🍂 September ja oktoober on Eesti kliimas eriti hea aeg suvel hoonesse kogunenud niiskuse väljaviimiseks. Nii saab maja külmaks perioodiks ette valmistada ning vähendada rõskuse, kondensatsiooni ja hallituse tekkimise riski.

Sügisel hakkavad välisõhu temperatuur ja absoluutne niiskus langema, kuid päikeseenergiat on veel piisavalt. 🌞 Kui jahedam välisõhk päikese abil üles soojendada ja hoonesse juhtida, langeb selle suhteline õhuniiskus. Soojem ja kuivem õhk seob hoones olevat niiskust ning ventilatsioon aitab selle hoonest välja viia.

Just madalam sügispäike sobib hästi lõunapoolsele fassaadile paigaldatud päikese õhkküttepaneelile.

Seetõttu ei tasu oodata, kuni majas on juba rõske, tekib kondensatsioon või on tunda kopitanud lõhna. Praegu on õige aeg suvel kogunenud niiskus enne külma perioodi välja viia.

Loe, miks tuleb päikese õhkküttega ventilatsiooni kasu sügisel eriti hästi esile.
Pikem selgitus blogis – link kommentaarides. 👇

Sügispäike aitab suvel kogunenud niiskuse majast välja viiaSolNavitasaugust 16, 2026Blog Post Suvel kogunenud niiskus on mõistlik majast välja saada enne külma perioodi – ja sügisene madalam päike on päikese õhkküttepaneeli jaoks väga hästi kasutatav energiaallikas. Miks tuleb päikes...

28/08/2026

Summer moisture does not leave a building simply because summer has ended. But autumn can provide the right conditions to help remove it. ☀️🍂

Cooler outdoor air often contains less absolute moisture than warm summer air. When this air passes through a solar air collector, sunlight warms it before it enters the building.

The warmed air can then absorb moisture from walls, floors, furniture and other indoor surfaces. With continuous air exchange, the more humid indoor air is gradually displaced and given a way out.

Autumn can be particularly effective because:

- The lower sun reaches vertically mounted collectors at a favourable angle
- Cooler outdoor air often contains less moisture
- Continuous airflow helps carry indoor moisture outside

Opening a window does not always create the same effect. It does not warm the incoming air, maintain steady airflow or continue working while the building is unattended. During warm and humid weather, it may even bring more moisture inside.

Solar ventilation is a gradual process, not an overnight solution or a repair for leaks and structural damp. But it can help prevent seasonal moisture from remaining trapped inside for weeks or months.

A healthy building needs to breathe.

Read our new article, “How autumn sun helps remove moisture from buildings,” to understand how drier seasonal air, solar warmth and continuous ventilation work together.

21/08/2026

A building can look perfectly dry at the end of summer, and still be holding a surprising amount of moisture.

Warm outdoor air can carry large amounts of water vapour. When that air enters a cooler building, its relative humidity rises. Timber, plaster, furniture and textiles can gradually absorb some of that moisture without showing immediate signs of dampness.

Everyday activities add even more:

• cooking
• showering
• drying laundry
• simply breathing

When air exchange is insufficient, part of this moisture remains inside the building.

That is why a problem that becomes visible in autumn or winter may actually have started much earlier. As temperatures fall, the warning signs can begin to appear: fogged windows, musty smells, damp surfaces and eventually conditions favourable to mould.

The pattern occurs in both Northern and Southern Europe. The climates may be different, but the principle is similar: moisture enters during a warmer, more humid period and needs to be removed when drier outdoor air becomes available.

Summer ending does not automatically make a building dry. The stored moisture still needs a way out.

Read our new article, “Why buildings accumulate moisture during summer,” to understand what happens inside a building and why the problem often appears later.

Read full article through link in our bio

Next, we will explain how solar ventilation uses drier seasonal air and solar heat to help remove moisture from a building.