Filters

A ventilation filter will help with 

Protecting your ventilation system from breaking down 

Maintaining a healthy indoor climate

How to choose the right filter?

When it comes to choosing a filter, it is of great importance whether you live in a place with a lot of dust from outside, with smoke from wood stoves or with a lot of traffic pollution. There are also filters that are particularly beneficial for people with pollen allergy, asthma or hay fever. 

Take a look at our wide selection of filters at favorable prices and read on to find the filter that best suits your system and your needs. 

Choose from three types of ventilation filters

Overall, there are three types of filters for ventilation systems, which clean the air of particles to varying degrees. Most ventilation systems use type G4, but it may be that your needs fit better with one of the others. 

1. Coarse filter (G4) - removes the dust particles that you can see with the naked eye.

2. Medium fine filter (M5) - removes the vast majority of particles, but not the very small ones.

3. Fine filter (F7) - removes the very small particles, such as pollen.

Replace ventilation filter frequently for best results 

To achieve the best result, the filter must be changed at least once a year. However, we would recommend that you change every 6-9 months to make sure that the filter works optimally. 

If you live in a place with a lot of air pollution, you may need to switch more frequently. A filter filled with dust does not have the desired effect and thus does not filter out all the harmful particles. 

How it works

A ventilation filter consists of an intake and exhaust filter. It purifies the outside air and keeps the system free of dust, so clean air comes out again.

The filter has the distinguished task of protecting the system so that dust, insects and dirt do not get stuck, which in the worst case can destroy the system. It also helps to keep a clean and healthy indoor climate - both for allergy sufferers, but also for everyone else. 

When changing the filter, it is a good idea to vacuum and clean the system where the filter is located. In this way, you achieve the best result without burdening the system. However, never vacuum the filter itself - rather change to a new one. 

In addition to the classic filter mats, we also have duct filters that are shaped to fit ventilation pipes. 

An easy way to a healthy indoor climate 

It is important to ventilate the home to maintain a good indoor climate - preferably 2-3 times a day. But when you do, you're also firing the birds and letting all the heat out, which isn't beneficial energy-wise. 

With a ventilation system, the air is changed every hour all year round, which is much more advantageous. The filter helps purify the air coming from outside while keeping harmful particles from the door. 

We sell filters of different brands and are always happy to help you on your way, so you can find the right and in the desired price range. 

Ventilation filter for pollen allergy sufferers

It is hard for pollen allergy sufferers to get through pollen season. Stuffy nose, constant sneezing and itchy eyes can seriously affect quality of life. 

With the filter type F7, also known as a pollen filter, the indoor climate can be greatly improved throughout the pollen season. The filter filters out up to 99% of particles over 2.5 μm (micrometers), which has a major effect on how many particles enter the home. 

For best effect, doors and windows should be kept closed as far as possible. 

F7 is also effective for you who suffer from hay fever, or for you who just want to reduce harmful particles from traffic fumes and industry in your home. They are available in combination with activated carbon, which are called carbon filters, and they also help to eliminate odors. 

Do you need our help?

It can be difficult to choose the right solution, and we are therefore always ready to help you.

We are very keen to give you a detailed answer to your questions, and if you need sparring, please write to info@bels.dk. 

We do not have a phone number, but use email to document the agreements made with you and to have a good overview of previous correspondence. 

We always respond no later than 24 hours after your inquiry.