Compatible filter set

G4/G4 filter set for Zehnder ComfoAir E300 E400

2 filters · 160 × 500 × 23 mm · cardboard frame · replaces ref. 400100900

The G4/G4 set follows the factory configuration of the Zehnder ComfoAir E300 E400: one ISO Coarse 75% filter (formerly G4) on the supply side and one on the extract side. The standard choice for a home without particular constraints.

€19.50incl. 21% VAT

Out of stock, restocking in progress

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Compatible with Zehnder ComfoAir E300 E400, matching dimensions and filter class
Delivery in Belgium
Secure payment, Bancontact, cards
Made in the European Union

Compatible product. Not manufactured or sold by the brand named. Brand and model names are used solely to indicate compatibility.

What the set contains

Each set delivers every filter of the unit, ready to fit.

Class	Position	Dimensions	Frame
2 × ISO Coarse 75 % · G4	Extract air, Supply air (fresh)	160 × 500 × 23 mm	cardboard

Why this set

ISO Coarse / ISO Coarse configuration
Standard filtration
Same media in both positions

G4 or F7?

	ISO Coarse 75% (G4)	ISO ePM1 65% (F7)
Stops	Dust, insects, lint	Pollen, fine particles, soot
Position	Extract and supply air	Supply air, intake side
For whom	The unit's standard configuration	Allergies, city, busy road
Lifetime	6 months	6 months, watch it more closely

Specifications

Set: G4/G4 · G4/G4 filter set (ISO Coarse)
Unit: Zehnder ComfoAir E300 E400
Number of filters: 2
Filter dimensions: 160 × 500 × 23 mm
Thickness: 23 mm
Frame: cardboard
Available classes: 2 × ISO Coarse 75% (G4)
Matching manufacturer references: 400100900, 400502012, 400502013
VMCD reference: KIT-160x500x23-CARTON-G4G4
Type: Compatible filter, not an original part
Made in: European Union
Recommended replacement: Every 6 months, check every 3 months

When and how to replace

Every six months in most homes, more often near a road, during building work or with pets. A grey, bulging or smelly filter needs replacing without waiting for the date.

01
Switch off the power
Turn the unit off or cut the breaker before opening the hatch.
02
Open the filter hatch
Remove the old filters and note their direction: an arrow or label shows the air inlet side.
03
Slide in the new filters
If the set mixes two classes, the fine filter (ISO ePM1) goes on the supply side. With two identical filters there is no order to follow. The frame must sit flat, without play.
04
Reset the indicator
Close up, switch back on and reset the filter reminder on the controller, if there is one.

The other sets for this unit

Same dimensions, different filter class.

All filters for the Zehnder ComfoAir E300 E400

This set also fits

These units use the same filter shape.

Frequently asked questions

Is this G4/G4 set an original Zehnder part?

No. It is a compatible set, made to the dimensions of the ComfoAir E300 E400 filter (160 × 500 × 23 mm) and to the stated filter class, by a European manufacturer of ventilation filters.

When will this set be dispatched?

If the set is in stock, within two working days of payment, by parcel, anywhere in Belgium. If it is shown as unavailable, no lead time is promised: leave your email and we will let you know as soon as it is back.

How do I fit the filters in the ComfoAir E300 E400?

Both filters in this set are identical (ISO Coarse 75%, formerly G4): there is no supply or extract position to tell apart. An arrow or label on the frame shows the air direction. The frame must sit flat, without play. Reset the filter indicator after fitting.

Would you rather we did it?

In Brussels, Brabant and Hainaut we replace the filters during the unit's service visit and hand you a written report.

Book a service