Fresh air – better concentration and motivation to learn

date_range 30 August 2025

Do you remember that feeling in the classroom when there was no ventilation – the air became heavy and stuffy, and you’d leave with a headache after lessons?

The same thing happens at home if not enough fresh air gets in.

Scientific studies confirm: when carbon dioxide (CO₂) levels rise indoors, the brain receives less oxygen. The effects are felt quickly – tiredness, drowsiness, weaker concentration and less motivation to study or work.

The most common symptoms of poor air quality:

❌ Headaches and eye strain

❌ Drowsiness and lack of energy

❌ Difficulty concentrating, slower reactions

❌ More frequent sneezing, coughing or allergy flare-ups

❌ Poorer learning results and lack of motivation

School studies prove it:

Texas, 1993 – after ventilation was improved, complaints of headaches, sneezing and coughing were significantly reduced.
Denmark, 2007 – by lowering CO₂ levels from 1300 ppm to 900 ppm, 10–12 year-olds completed maths and language tests more quickly and accurately.

And at home?

When the filters in your ventilation unit become clogged, less fresh air reaches your living space. The result – the same symptoms, only every day. If you or your child feel tired in the morning or struggle to concentrate on lessons, the problem may not be motivation – it may be the air you breathe.

Filters that protect your family:

⚙️ F7 filters – capture a large share of fine particles (such as PM2.5) that irritate the airways and can damage the lungs over time.

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Zehnder ComfoAir Q 350/450/600 F7+G4 Filter set (Efficient)

16.07 €

Ex VAT: 16.07 €

Manufacturer of MVHR	Zehnder
Manufacturer	CleanFilter
Air handling unit	ComfoAir Q 600 ComfoAir Q 450 ComfoAir Q 350
Filter dimensions	500x159x22
Class EN779	F7+G4
Class ISO16890	ePM1 65%
Protection level	High: fine particles, dust, pollen, mold spores, combustion particles, smog particles, insecticide dust.
Quantity of filters	2
Advantages	Better protection from fine particles: ePM1 65% filtration (many original filters are typically ~ePM1 50–55%). Cleaner indoor air: mechanical filtration helps capture combustion (soot) and traffic-related particles without relying only on electrostatic charge. Easier airflow: up to 3× lower initial resistance compared to the previous material (internal lab tests). Proven performance: tested according to ISO 16890, made in the EU.
Manufacturer product number	400100118 400502015 400502013
Remarks	⚠️ Remarks: ComfoAir ≠ ComfoAir Q. Different dimensions, not interchangeable. Check your ventilation unit model/version before ordering.

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Wolf CWL-2-325/400 1xF7 Filter (Smog&Pollen)

19.94 €

Ex VAT: 19.94 €

Manufacturer of MVHR	WOLF
Manufacturer	CleanFilter
Air handling unit	Wolf CWL-2-325 Wolf CWL-2-400
Filter dimensions	245x510x22
Class EN779	F7
Class ISO16890	ePM1 70%
Protection level	High: fine particles, dust, pollen, mold spores, combustion particles, smog particles, insecticide dust.
Quantity of filters	1
Advantages	Maximum protection – ePM1 70% removes up to 40% more smog, pollen and fine dust than standard filters (50–60%). Made in the EU – reliable quality and strict safety standards German filtration material – hygienic (VDI 6022) and PFAS-free, for cleaner and safer air ISO 16890 tested – performance verified by an accredited laboratory in Germany
Manufacturer product number	1669552
Remarks	ℹ️ This is a supply air filter. For extract air filtration, please order a separate G4/M5 filter (available in our shop).

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FLEXIT Nordic S2/S3 F7+F7 Filter set (Efficient)

12.36 €

Ex VAT: 12.36 €

Manufacturer of MVHR	Flexit
Manufacturer	CleanFilter
Air handling unit	FLEXIT Nordic S2 FLEXIT Nordic S3
Filter dimensions	166x272x48
Class EN779	F7+F7
Class ISO16890	ePM1 70%
Protection level	High: fine particles, dust, pollen, mold spores, combustion particles, smog particles, insecticide dust.
Quantity of filters	2
Advantages	Maximum protection – ePM1 70% removes up to 40% more smog, pollen and fine dust than standard filters (50–60%). Made in the EU – reliable quality and strict safety standards German filtration material – hygienic (VDI 6022) and PFAS-free, for cleaner and safer air ISO 16890 tested – performance verified by an accredited laboratory in Germany
Manufacturer product number	116597 116597

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Paul Climos 200 1xF7/AC Activated carbon filter (Odor)

9.31 €

Ex VAT: 9.31 €

Manufacturer of MVHR	Paul
Manufacturer	CleanFilter
Air handling unit	Paul Climos F 200 Enthalpy Paul Climos 200 Paul Climos F 200 ECO
Filter dimensions	168x174x45
Class EN779	F7/AC
Class ISO16890	ePM2.5 60%
Protection level	Particles and odors: fine particles, dust, pollen, mold spores, combustion particles, volatile particles, NOx, O3 gases.
Quantity of filters	1
Advantages	Made in the EU – reliable quality and strict safety standards German filtration material – hygienic (VDI 6022) and PFAS-free, for cleaner and safer air ISO 16890 tested – performance verified by an accredited laboratory in Germany Absorbs volatile particles (odors) and harmful gases as NOx, O3, etc.

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SAVE VSR 300 (PF) F7/AC+M5 Activated carbon filter (Odor)

29.48 €

Ex VAT: 29.48 €

Manufacturer of MVHR	Systemair
Manufacturer	CleanFilter
Air handling unit	SAVE VSR 300 (PF)
Filter dimensions	397x277x24 398x210x24
Class EN779	F7/AC+M5
Class ISO16890	ePM1 70%
Protection level	Particles and odors: fine particles, dust, pollen, mold spores, combustion particles, volatile particles, NOx, O3 gases.
Quantity of filters	2
Advantages	Made in the EU – reliable quality and strict safety standards German filtration material – hygienic (VDI 6022) and PFAS-free, for cleaner and safer air ISO 16890 tested – performance verified by an accredited laboratory in Germany Absorbs volatile particles (odors) and harmful gases as NOx, O3, etc.
Remarks	ℹ️ Dimensions are provided according to the Systemair standard (with gasket). Actual filter dimensions without the gasket may differ slightly. The filter is matched to your unit model.

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Brink Flair 225 1xF7/AC Activated carbon Filter (Odor)

15.33 €

Ex VAT: 15.33 €

Manufacturer of MVHR	Brink
Manufacturer	CleanFilter
Air handling unit	Brink Flair 225
Filter dimensions	400x215x20
Class EN779	F7/AC
Class ISO16890	ePM2.5 60%
Protection level	Particles and odors: fine particles, dust, pollen, mold spores, combustion particles, volatile particles, NOx, O3 gases.
Quantity of filters	1
Advantages	Made in the EU – reliable quality and strict safety standards German filtration material – hygienic (VDI 6022) and PFAS-free, for cleaner and safer air ISO 16890 tested – performance verified by an accredited laboratory in Germany Absorbs volatile particles (odors) and harmful gases as NOx, O3, etc.
Manufacturer product number	532794 532793 580637

⚙️ Activated carbon filters – neutralise odours and harmful gases.

⚙️ M5 (ePM10) filters – reduce the amount of allergens indoors.

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Domekt R 200 V (Domekt Rego 200 VE) M5+M5 Filter set (Standard)

11.30 €

Ex VAT: 11.30 €

Manufacturer of MVHR	Komfovent
Manufacturer	CleanFilter
Air handling unit	Domekt R 200 V (Rego 200 V)
Filter dimensions	285x130x46
Class EN779	M5+M5
Class ISO16890	ePM10 55%
Protection level	Average: medium-sized solid particles, dust, fluff, pollen, mold spores.
Quantity of filters	2
Advantages	Lower running costs – lower filter price, lower energy use, and usually longer time between replacements than higher-efficiency filters. Made in the EU – reliable quality and strict safety standards German filtration material – hygienic (VDI 6022) and PFAS-free, for cleaner and safer air ISO 16890 tested – performance verified by an accredited laboratory in Germany
Manufacturer product number	774100091
Remarks	⚠️ Not suitable for Domekt R 200 V C8 model (from 06/2022). Please check model or filter dimensions before ordering. 🌟 High-quality replacement filter: made from certified materials (Germany, SANDLER AG) with tested performance. Provides reliable air filtration and optimal service life.

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Paul Climos 200 M5+M5 Filter set (Standard)

13.91 €

Ex VAT: 13.91 €

Manufacturer of MVHR	Paul
Manufacturer	CleanFilter
Air handling unit	Paul Climos F 200 Enthalpy Paul Climos 200 Paul Climos F 200 ECO
Filter dimensions	168x174x45
Class ISO16890	ePM10 55%
Protection level	Average: medium-sized solid particles, dust, fluff, pollen, mold spores.
Quantity of filters	2
Advantages	Lower running costs – lower filter price, lower energy use, and usually longer time between replacements than higher-efficiency filters. Made in the EU – reliable quality and strict safety standards German filtration material – hygienic (VDI 6022) and PFAS-free, for cleaner and safer air ISO 16890 tested – performance verified by an accredited laboratory in Germany
Manufacturer product number	5270004270

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Brink Renovent Excellent 300/400/450 M5+M5 Filter set (Pollen)

7.21 €

Ex VAT: 7.21 €

Manufacturer of MVHR	Brink
Manufacturer	CleanFilter
Air handling unit	Brink Renovent Excellent 300 Brink Renovent Excellent 400 Brink Renovent Excellent 450
Filter dimensions	185x525x5
Class EN779	M5+M5
Class ISO16890	ePM10 50%
Protection level	Average: medium-sized solid particles, dust, fluff, pollen, mold spores.
Quantity of filters	2
Advantages	Made in the EU – reliable quality and strict safety standards German filtration material – hygienic (VDI 6022) and PFAS-free, for cleaner and safer air ISO 16890 tested – performance verified by an accredited laboratory in Germany
Manufacturer product number	531770 580594
Remarks	ℹ️ This filter set protects the MVHR from larger particles. For finer filtration (pollen, smog), use an F7 supply air filter, available in our shop.

🎒 Get ready for the new school year by making sure your home has clean air – a place where it’s easier to breathe, learn and recharge!

Categories: Indoor air quality