Paul Filters
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House brandExtract filter size: 174x168x45 mmSupply filter size: 174x168x45 mmFilter class (EN779): M5+F7Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
Pollen and moldCaptures pollen, mold spores, and other allergens
Smog and bacteriaProtects against allergens and urban pollution
House brandExtract filter size: - mmSupply filter size: 350x250x40 mmFilter class (EN779): G4Filter quantity in a set: 1 filterProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
House brandExtract filter size: 174x168x45 mmSupply filter size: 174x168x45 mmFilter class (EN779): M5+M5Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
Pollen and moldCaptures pollen, mold spores, and other allergens
House brandExtract filter size: 275x187x20 mmSupply filter size: 275x187x20 mmFilter class (EN779): G4+F7Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
Pollen and moldCaptures pollen, mold spores, and other allergens
Smog and bacteriaProtects against allergens and urban pollution
OriginalExtract filter size: 275x187x20 mmSupply filter size: 275x187x20 mmFilter class (EN779): G4+F7Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
Pollen and moldCaptures pollen, mold spores, and other allergens
Smog and bacteriaProtects against allergens and urban pollution
OriginalExtract filter size: 174x168x45 mmSupply filter size: 174x168x45 mmFilter class (EN779): M5+M5Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
Pollen and moldCaptures pollen, mold spores, and other allergens
House brandExtract filter size: 475x180x50 mmSupply filter size: 475x180x50 mmFilter class (EN779): G4+G4Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
House brandExtract filter size: 275x187x20 mmSupply filter size: 275x187x20 mmFilter class (EN779): G4+G4Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
House brandExtract filter size: 475x180x50 mmSupply filter size: 475x180x50 mmFilter class (EN779): G4+F7Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
Pollen and moldCaptures pollen, mold spores, and other allergens
Smog and bacteriaProtects against allergens and urban pollution
OriginalExtract filter size: 475x180x50 mmSupply filter size: 475x180x50 mmFilter class (EN779): G4+F7Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
Pollen and moldCaptures pollen, mold spores, and other allergens
Smog and bacteriaProtects against allergens and urban pollution
OriginalExtract filter size: 475x180x50 mmSupply filter size: 475x180x50 mmFilter class (EN779): G4+F7Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
Pollen and moldCaptures pollen, mold spores, and other allergens
Smog and bacteriaProtects against allergens and urban pollution
OriginalExtract filter size: 174x168x45 mmSupply filter size: 174x168x45 mmFilter class (EN779): M5+F7Filter quantity in a set: 2 filtersProtection levelFilter protection level indicates efficiency in blocking particles or contaminants, varying by standard and application.
BasicGeneral dust and particle filtration
Pollen and moldCaptures pollen, mold spores, and other allergens
Smog and bacteriaProtects against allergens and urban pollution
1-12 of 12Which Paul series do you have? Climos, Focus, Novus or ISO Defroster
We stock replacement filter sets for four Paul MVHR ranges:
- Climos series
- Focus series
- Novus series
- ISO Defroster duct filter box
Two pieces of information on your unit’s front panel confirm the exact model: the series name (e.g. Novus or Focus) and the longer alphanumeric code that specifies airflow capacity — units sharing a series name can still take different filter sizes.
Built for Passive House: why filtration matters more on a Paul unit
Paul Wärmerückgewinnung is a German pioneer of ventilation systems designed specifically for Passive House and low-energy buildings. Because these homes are airtight and rely on the MVHR system for essentially all fresh air exchange, filter quality has a bigger impact on indoor air than in a leakier property.
G4, M5 and F7: Paul’s own ISO Coarse and ePM1 filter classes
Paul filter sets are available in:
- G4 (ISO Coarse 70%) — captures larger particles: soil, large pollen grains, plant debris, sawdust and textile lint
- M5 (ISO Coarse 75% or ePM10 55%) — captures pollen, mould spores, pet dander and house dust
- F7 (ISO ePM1 55%, 60% or 70%) — high-efficiency capture of bacteria, smog, tobacco smoke and combustion dust
Genuine and house-brand EU manufacturing
Original Paul filters are manufactured by Paul, part of the Zehnder Group, at Zehnder’s own production facilities in the Netherlands, France, and Switzerland. Our house brand alternatives are made in the EU by certified manufacturers under the same ISO 16890 standard.
Customer Reviews
The experience was seamless, they communicated well, and I got what I ordered quickly. I also found a product that I didn’t know existed, and ordered it as well. All in all, an excellent experience!
Steve SchaferTrustpilot review
Top, fast shipment, good productTim SoenenTrustpilot review
Get what I ordered, cheaper than in my country (post service included).MatejTrustpilot review
Fast and easy to orderPeter PostruznikTrustpilot review
Everything was ok but it took like a week to receive the order when it appeared as completed in the status. Maybe more reliable information on the delivery process would be appreciated.Toni AlmansaTrustpilot review
Most important: No fake shop 🙂 (i wos looking for an impressum and country of operating headquarters). Summary: Fast delivery. Moderate price. Good Quality. Quick and easy purchase. Good online-Shop. I miss Paying with Paypal.Hans-dieter TinhofTrustpilot review
Very good product and good priceCARLOS MARTINSTrustpilot review
Need Help? Start Here.
We’ve gathered answers to the most common questions about our products and services. If you can’t find an answer here, please contact us directly.
How often should Paul filters be changed in a Passive House?
Check them every 3 months and replace them at least every 6 months. In a Passive House the MVHR unit supplies all the fresh air, so a clogged filter shows up quickly as stuffier air and more fan noise. Change the supply filter sooner during pollen season or if you live near a busy road, and keep a spare set at home so you never run the unit on saturated filters.
Do Paul Novus and Focus models use the same filter size?
No. The Focus 200 takes its own filter size, while the Novus 300 and Novus 450 share one set. The Climos (F) 200 uses a different size again. Check the series name and model number on the unit before ordering, then choose the G4+G4 or G4+F7 version (M5+M5 or M5+F7 for Climos).
How do I identify my exact Paul model (e.g. Novus, Focus, Climos)?
Two pieces of information on the unit's front panel confirm your exact Paul model:
- The series name, such as Novus or Focus
- The longer alphanumeric model code, which specifies airflow capacity
Both help match you to the correct filter set, especially where multiple airflow variants share a series name.
What filter class is recommended for Paul units?
It depends on the model. The Paul filter sets we stock come in these combinations:
- Novus 300/450 and Focus 200 — G4+G4, or G4+F7 with a fine F7 (ePM1) supply filter
- Climos (F) 200 — M5+M5, or M5+F7
Because Passive House buildings get all their fresh air through the MVHR unit, the version with the F7 supply filter is usually the better choice for indoor air quality.
Why is Paul associated with Passive House ventilation specifically?
Paul Wärmerückgewinnung is a German pioneer of ventilation systems designed for Passive House and low-energy buildings, with several unit series built around very high heat-recovery efficiency. Depending on the model, Paul units use G4, M5 and F7 filters.
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