Vaillant replacement filter set F9/G4 for recoVAIR 260/4 and 360/4 (polluted environment)

Product detailed description

Vaillant replacement filter set F9/G4 for recoVAIR 260/4 and 360/4 (for polluted environments)

The replacement filter set F9/G4 (manufacturer part number 0020180873) is genuine accessory shared by the pair of heat recovery units Vaillant recoVAIR VAR 260/4 and VAR 360/4, designed as a more demanding alternative to the standard G4/F7 set for installations in polluted environments. The set includes a G4 class pre-filter (captures coarser impurities - dust, fibres, insects, larger pollen particles) and a significantly finer F9 class filter, which can capture even very fine particles including smog particles PM2.5 and PM1, industrial dust, mould spores and some bacteria. Thanks to identical filter compartment dimensions of both models, this set fits the VAR 260/4 unit as well as the more powerful VAR 360/4 unit.

While the standard G4/F7 set is fully sufficient for normal, less burdened environments, the F9/G4 set is intended primarily for family houses in urban environments, near busy roads, industrial zones, or for households with increased sensitivity to allergens and fine dust particles. Given the higher maximum air capacity of both models (260 and 360 m³/h respectively), this set filters a larger volume of air than the corresponding set for the compact VAR 150/4 model, which in a polluted environment also means a larger absolute amount of fine particles captured per unit of time.

Technical characteristics

• Device type: replacement filter set (2 pcs) for the recoVAIR unit, higher filtration class
• Manufacturer order number: 0020180873
• Set contents: 1× G4 class filter (pre-filter, coarse impurities) + 1× F9 class filter (very fine filter, PM2.5/PM1, smog, mould spores, bacteria)
• Intended for: shared by recoVAIR VAR 260/4 and VAR 360/4 units (including "E" variants with an enthalpy exchanger)
• Recommended environment of use: urban, industrially burdened or allergen-demanding locations, or households with increased sensitivity to fine dust particles
• Recommended replacement interval: generally once a year, a shorter interval is possible in more burdened environments according to the unit's service signalling
• Location in the air handling path: at the inlet of supplied outdoor air and at the inlet of extracted indoor air into the unit
• Standard alternative: G4/F7 filter set (code 0020180809) for normal, less burdened environments
• Material: higher-density non-woven filter fabric in a frame adapted to the dimensions of the VAR 260/4 and VAR 360/4 units
• Compatible units - parameters: VAR 260/4 (max. 260 m³/h) and VAR 360/4 (max. 360 m³/h)
• Country of origin: Germany / EU (Vaillant Group)
• Warranty: 2 years

Why choose the higher F9 filtration class for larger models

F9 class filters are among the finest commonly available filters for controlled ventilation systems in residential buildings, with capture efficiency for fine particles PM2.5 and PM1 significantly exceeding class F7. Due to their higher air capacity, the VAR 260/4 and VAR 360/4 models are used primarily in larger family houses with multiple living rooms connected to one central ventilation system - quality F9-level filtration in such an environment ensures that fine pollutant particles from the surrounding air do not enter all rooms of the house at once in large quantities.

In locations with a higher level of air pollution (cities, industrial zones, proximity to busy roads), the F9/G4 set therefore provides a noticeably higher level of protection for the quality of air supplied to the entire house compared to the standard G4/F7 set.

Installation and filter replacement

Replacing the F9/G4 filters in the VAR 260/4 and VAR 360/4 units is done the same way as with the standard G4/F7 set - the filter inserts are accessible after opening the unit's service cover without the need for special tools. Due to the denser filtration structure of the F9 filter and the larger filter dimensions (compared to the VAR 150/4 model), we recommend careful handling to avoid mechanical damage to the fine filter layer or deformation of the larger filter frame.

Compatibility

This F9/G4 filter set is intended for both recoVAIR VAR 260/4 and VAR 360/4 models, including their variants with an enthalpy heat exchanger. For the smaller VAR 150/4 model, we offer a separate, smaller-sized F9/G4 filter set (code 0020180872) - the filters cannot be interchanged between this smaller unit and the VAR 260/4 and VAR 360/4 pair.

Comparison of the F9/G4 set with the standard G4/F7 set for the VAR 260/4 and VAR 360/4 models

The price difference between the two sets is relatively small even for larger models, so in case of any doubt about the quality of the surrounding air, we recommend choosing the more demanding F9/G4 set - the additional cost is low compared to the benefit for the quality of air supplied to the entire house.

Why higher filtration is especially important in larger houses

The VAR 260/4 and VAR 360/4 models generally supply fresh air to a larger number of living rooms at once - the living room, bedrooms, children's rooms and study - from a single central point. This means that the quality of filtration at the inlet directly affects the air quality throughout the entire house simultaneously, not just in one room. In the VAR 150/4 model, which is generally used in smaller apartments, this coverage area is smaller, but the principle remains the same - it is precisely with a larger number of living rooms connected to one system that investing in a higher F9 filtration class pays off even more, since its benefit is felt simultaneously in all connected spaces.

Recommendations for installation companies on larger projects

For projects with the VAR 260/4 or VAR 360/4 models, which are generally implemented in larger new buildings or renovated family houses, we recommend that installation companies already present the option of choosing between the standard G4/F7 set and the more demanding F9/G4 set at the offer stage, explaining the difference in filtration quality and the minimal price difference. In practice, it turns out that customers informed about this difference already at the time of purchasing the unit more often choose the more demanding F9/G4 set right away, rather than dealing with an additional replacement later after discovering dissatisfaction with air quality.

Relation to other accessories for larger units

The VAR 260/4 and VAR 360/4 models are often combined in practice with other recoVAIR accessories - an enthalpy heat exchanger (improves winter comfort), electric air preheating (protection against freezing) or a CO2 sensor VAZ CO/1 (automatic power control). The choice of the higher F9/G4 filtration class complements these components - for example, automatic power control based on the CO2 sensor ensures that the unit does not run unnecessarily at high power, which indirectly extends the service life of the filters themselves between replacements.

What happens with water vapour and fine particles in larger air volumes

At the higher airflow provided by the VAR 260/4 (max. 260 m³/h) and VAR 360/4 (max. 360 m³/h) models, a larger volume of outdoor air passes through the filters in the same time than with the compact VAR 150/4 model. This means that even at the same concentration of pollutant particles in the outdoor air, the filters of these larger units capture a larger absolute amount of impurities per day - another reason why it is advisable to pay increased attention to regular replacement with these models and consider the more demanding F9/G4 filtration class.

When it's time to replace the filters

The manufacturer recommends an approximate replacement interval of about once a year, but in a more burdened environment (for example during the winter smog season) it may be advisable to shorten the interval. Given the higher air capacity of the VAR 260/4 and VAR 360/4 models, we recommend primarily following the service interval signalling of the unit or controller, as the rate of filter clogging depends on a combination of the selected power level and the actual level of pollution in the surrounding air.

What are PM2.5 and PM1 particles and why do they matter

The designations PM2.5 and PM1 refer to solid pollutant particles with a diameter smaller than 2.5 and 1 micrometre respectively, which are produced mainly by combustion processes (transport, industry, solid fuel heating). They are so small that when inhaled they penetrate deep into the pulmonary alveoli, and are therefore among the health-riskiest components of polluted air. The F9 class filter is designed to capture precisely this finest fraction with high efficiency, thus ensuring a uniformly higher quality of supplied air throughout larger family houses with multiple living rooms.

Maintenance and care

When handling used F9 filters, we recommend wearing gloves, as captured fine particles could be released back into the air if handled carelessly. Old filters can be disposed of as normal household waste. At each replacement, we also recommend checking the condition of the filter frame seal to prevent unfiltered air from bypassing it, which is especially important given the higher airflow of the VAR 260/4 and VAR 360/4 models.

Why choose this particular filter set

This filter set is a genuine accessory directly from the manufacturer, made precisely to the dimensions of the filter compartment of the VAR 260/4 and VAR 360/4 units. Compared to non-original or universal third-party filters, it guarantees a correct fit into the frame without gaps, maintains the declared F9 filtration class, and preserves the warranty conditions for the entire system - with the advantage of a single shared code for both models.

Frequently asked questions

Is this filter set really the same for both the VAR 260/4 and VAR 360/4 models?

Yes, both models share the same filter compartment dimensions, so the same replacement filter set F9/G4 with order number 0020180873 fits both.

Is the difference between the F9/G4 and G4/F7 sets significant?

Yes, the F9 filter captures a significantly larger proportion of the finest particles (PM2.5, PM1) than the F7 filter, which is especially noticeable in polluted urban or industrial environments.

How often do the F9/G4 filters need to be replaced?

Approximately once a year; in a more burdened environment (e.g. smog season) a shorter interval may be appropriate - follow the unit's service interval signalling.

Is this set more expensive than the set for the VAR 150/4 model?

Yes, due to the larger filter dimensions adapted to the higher air capacity of the VAR 260/4 and VAR 360/4 units, this set is somewhat more expensive than the set for the compact VAR 150/4 model.

Is handling the F9 filter more demanding than a regular filter?

We recommend using gloves during replacement and handling the filter carefully; otherwise the replacement procedure is the same as with the standard G4/F7 set.

What warranty applies to this filter set?

We provide a standard 2-year warranty, the same as for other accessories and parts for Vaillant recoVAIR units.

Can I switch later from the standard G4/F7 set to the F9/G4 set?

Yes, switching is possible at any time, as both sets are dimensioned for the same filter compartment of the VAR 260/4 and VAR 360/4 units - simply order the F9/G4 set instead of the standard one at the next replacement.

Is there a higher filtration class than F9 available for recoVAIR units?

Within the standard genuine Vaillant accessories for the VAR 260/4 and VAR 360/4 models, the F9 class represents the highest commonly available level of fine filtration.

Does the choice of unit (VAR 260/4 vs. VAR 360/4) affect the rate of filter clogging?

Since the VAR 360/4 model has a higher maximum air capacity, at a comparable power level the filters may clog somewhat faster than with the VAR 260/4 model - the exact replacement interval always also depends on the level of pollution in the surrounding air, so we recommend following the unit's service interval signalling.

Do you recommend always keeping a spare filter set at home?

Yes, since the VAR 260/4 and VAR 360/4 models supply fresh air to multiple living rooms at once, we recommend having a spare filter set ready at home in advance so replacement can take place immediately after the service interval is signalled.

Note: we recommend consulting the exact recommended filter replacement interval for your specific house and location with an installation company or Vaillant service technician.

When ordering, it is enough to state that you own one of the VAR 260/4 or VAR 360/4 models - the filter set is completely identical for both models, just as with the standard G4/F7 set.

Given the larger living area coverage of these models, we recommend discussing the choice of the appropriate filtration class directly with the installation company already at the system design stage.

Summary

The F9/G4 replacement filter set represents the highest commonly available level of filtration for Vaillant recoVAIR VAR 260/4 and VAR 360/4 units, suitable especially for larger family houses in urban, industrially burdened environments or for households sensitive to fine dust particles and allergens. As a genuine accessory directly from the manufacturer, it guarantees an exact dimensional fit, the declared F9 filtration efficiency, and preservation of the warranty conditions for the entire system - with the advantage of a single shared code valid for both models. With a minimal price difference compared to the standard G4/F7 set, it represents a reasonable investment in higher air quality in a larger household.

Note: we recommend consulting the exact recommended filter replacement interval for your specific house and location with an installation company or Vaillant service technician, as it depends on local air pollution conditions and the selected power level of the unit.

When ordering, it is enough to state that you own one of the VAR 260/4 or VAR 360/4 models - the F9/G4 filter set is completely identical for both models, just as with the standard G4/F7 set.