Avoid damp by using a solar panel ventilator

The sun removes damp
A solar panel ventilator heats the air using the sun, then blows the heated air into the house. Use one in places such as in your holiday home, shed or basement which may be susceptible to damp, and which are only partially heated, or not heated at all.

A solar panel ventilator sends fresh, warm and dry air into the house. This removes the moisture, providing you with a better indoor climate thereby preventing mould and mildew.

Reduce the heating bill
A solar panel ventilator can also help to heat a holiday home. This is because it is quicker to heat up a holiday home on a cold day if there is not so much moisture in the air.

A solar panel ventilator can help to reduce the cost of heating a holiday home, especially if it has electric heating because electricity is expensive. The amount of heat saved varies depending on the type of heating you have, and whether you heat the house all year round for example.

Cheaper than a heat pump
A solar panel ventilator costs EUR 670-1600 depending on the size, Once purchased, a ventilator runs automatically and costs nothing when the sun shines, and there are no running costs.

An alternative to a solar panel ventilator in a holiday home can be an air-to-air heat pump. It costs more and uses electricity, but conversely it delivers more heat. A solar panel ventilator cannot heat an entire holiday home in the winter months, but it can keep the house, shed or basement frost free.

> Read more about heat pumps for holiday homes.

Check the fan
When you buy a solar panel ventilator, you should check the type of fan. This is because the air comes into the home via a small fan which is powered by a built-in solar cell. The fan starts automatically when the sun is shining.

Some types of solar panel ventilators allow you to turn down, or completely switch off the fan. This can be an advantage if it is very warm, or at times when you prefer to have complete silence.

How they work
Solar panel ventilators can be mounted on an outside wall or roof. They should face south and be in a place with as much sunlight as possible. A solar panel ventilator typically measures 0.5-3.0 m2.

A solar panel ventilator is a housing, for example made of aluminium, with a glass or plastic cover on the front. The dry outside air is drawn in through valves or small holes into the solar cell ventilator. The air is heated by the sun and the dry, warm air is blown into the house.

A small hole needs to be drilled in the outer wall of the house. The place where the air is drawn in is usually just by the ventilator, but a short hose can also be attached.

Want to know more?
If you are not sure whether a solar panel ventilator is suitable, you can get advice from Energy Service Denmark (Energitjenesten) by telephoning (+45) 70 333 777.

> Read more about solar panel ventilators from Energy Service Denmark (Only in Danish)