Frequently asked questions

🌍 Clean Energy Against Air Pollution

Air pollution in North Macedonia and across the Balkans is a serious environmental challenge, with residential heating using wood and fossil fuels being one of its main sources. We offer a practical, environmentally friendly, and cost-effective solution: Solar Air Collectors.

This innovative system heats air using 100% free solar energy, providing efficient supplementary heating for residential, commercial, and industrial buildings. It is most commonly used during autumn, winter, and spring as an ideal addition to an existing heating system. During the summer, its innovative design allows the reverse process—natural cooling and ventilation during the early morning hours.

📊 The Result: Significantly lower heating and cooling costs. Indoor relative humidity is greatly reduced, especially in bathrooms, sports halls, and swimming pools, effectively preventing mold growth and creating a healthier indoor environment.

📍 Ideal Applications

🏠 Residential Buildings
Provides warm, fresh air to living rooms, home extensions, attics, and other residential spaces.

🍎 Agriculture
Solar drying of fruits, vegetables, herbs, mushrooms, and other agricultural products.

🛠️ Utility Buildings
Ideal for basements, garages, holiday cottages, and mountain cabins.

🏢 Large Buildings
Supplementary heating for sports halls, office buildings, municipal facilities, schools, and public institutions.

❓ Frequently Asked Questions (FAQ)

1. What is a Solar Air Collector?

A solar air collector is a device that captures solar energy and converts it into heat by warming air, which is then used directly for space heating or product drying.

2. How does the system work?

Solar radiation passes through a transparent cover (typically glass or polycarbonate) and heats the absorber surface. Air flowing through or beneath the absorber absorbs this heat and is then delivered by a fan to the area requiring heating or drying.

3. What are the main types of Solar Air Collectors?

There are two main types:

• Single-pass solar air collectors

• Double-pass solar air collectors

4. How much installation space is required?

The required space depends on the system capacity and heating demand.

• For solar dryers, collectors are typically installed on a supporting structure in front of the drying chamber.

• For building heating, collectors are mounted directly on the south-facing wall or on the roof.

5. Can the collectors operate during winter?

Yes. As long as sunlight is available, the system operates even at very low outdoor temperatures. Daily energy production is naturally lower during winter because of the shorter daylight hours.

6. Can the system be combined with electric heating or drying systems?

Absolutely. Solar air collectors are commonly combined with electric heaters or other conventional heating systems to ensure continuous operation during periods without sunshine.

7. How much does a Solar Air System cost?

The price depends on the collector size and system configuration.

• A 2 m² solar air collector costs approximately €270 (+5% VAT for thermal collectors).

• The smallest complete system (including fans, controller, and air ducts, excluding installation) starts at approximately €790.

8. What is the expected service life?

With proper maintenance, a solar air collector has a service life of more than 15 years.

The transparent polycarbonate (Lexan) cover comes with a 10-year UV protection warranty and offers excellent resistance to hail impact.

9. Does the system require regular maintenance?

Maintenance requirements are minimal.

Only occasional cleaning of dust and dirt from the transparent cover (glass or polycarbonate) is required, along with periodic inspection of the air filters and fans.

10. What applications are suitable for Solar Air Collectors?

• Drying fruits, vegetables, mushrooms, herbs, and timber

• Heating and ventilating homes, garages, workshops, warehouses, and industrial halls

• Preheating process air for industrial applications

11. How energy-efficient is the system?

The average thermal efficiency ranges from 50% to 80%, depending on the collector design, material quality, and current solar conditions.