Filters

85 products

Ventilation filters keep your MVHR, heat recovery and PIV system working efficiently and protect the unit's fan and heat exchanger from dust, pollen and debris. We stock genuine and compatible replacement filters for Systemair, Villavent, Vent-Axia and other major units, from coarse G3 panel filters to fine pleated filter sets, in sizes to suit domestic and light commercial units. Next-day delivery on all stocked filters.

Not sure which set fits your unit? Use our Filter Finder tool, or email hello@efans.co.uk or call 0161 399 3825 with the model number from the label inside the unit door.

Frequently asked questions

How often should I change my ventilation filters?

As a rule, replace MVHR and heat recovery filters every 6 to 12 months, and check them every 3 months. Homes near busy roads, building sites or with high pollen exposure clog faster and may need changing twice a year. A blocked filter forces the fan to work harder, raises running noise and energy use, and cuts airflow, so a low-cost filter change is the cheapest way to keep a system performing. Most units have a filter-change indicator or a service interval in the manual.

What do the filter grades G3, G4, M5 and F7 mean?

They describe how fine a particle the filter captures. Coarse grades G3 and G4 (ISO Coarse) stop insects, leaves and larger dust, and are used on PIV units and as the first stage on many MVHR units. M5 (ISO ePM10) catches finer dust and some pollen. F7 (ISO ePM1 55%) is the pollen and fine-particle grade recommended for the supply side of MVHR in homes with allergy or air-quality concerns. Many MVHR units run a coarser filter on extract and a finer F7 grade on supply.

Which filter does my unit need?

Match the filter to your exact unit model, not just the brand. Our listings name the compatible unit and filter set, for example a Systemair or Villavent VR 400, or a Vent-Axia PoziDry Compact 479188. If your model is not obvious, check the label inside the unit door or the original manual, or call us and we will identify the right set. You can also use our Filter Finder tool to confirm the unit.

Do I need to replace both the supply and extract filters?

Yes. MVHR units have two filters, one on the incoming fresh air and one on the outgoing stale air, and both should be changed together so airflow stays balanced. Most of our replacement sets are supplied as a matched pair for this reason. Running one new and one clogged filter unbalances the heat exchanger and reduces efficiency.

What grade filter does a PIV unit use?

Positive input ventilation units such as the Vent-Axia PoziDry draw air from the loft or outside and push it into the home, so they use a coarse G3 or G4 filter to catch loft dust, insects and pollen. These are inexpensive and should be checked yearly, as a loft environment can clog them faster than you would expect.

Can I wash and reuse ventilation filters?

Generally no. Pleated MVHR and pocket filters use fine synthetic media that is damaged by washing, which destroys their rating and lets particles straight through, so they should be replaced. Some coarse metal or plastic-mesh panel guards can be vacuumed or rinsed, but the filter cartridges are consumables. Replacing rather than washing keeps the manufacturer's airflow and efficiency figures valid.

MVHR Replacement Filters Duct Filter Boxes Heat Recovery Units PIV Units

Showing 25 - 48 of 85 products

Genuine Part

Systemair SAVE VSR 300 standard filter kit

In stock

Next day delivery
available

SKU: 25211

Systemair SAVE VSR 300 Standard Filter Kit

Genuine Systemair part
Supply F7 and extract M5 filter set
Fits SAVE VSR 300 MVHR unit

In stock

Next day delivery available

£75.28

Genuine Part

Systemair SAVE VTR 150 Optional Filter Kit 2

In stock

Next day delivery
available

SKU: 153439

Systemair SAVE VTR 150 Optional Filter Kit 2

Supply F7 / ePM1 60%, extract M5 / ePM10 60%
Optional filter kit
Fits SAVE VTR 150

In stock

Next day delivery available

£76.53

Genuine Part

Systemair SAVE VTR 300 Standard Filter Kit

In stock

Next day delivery
available

SKU: 25314

Systemair SAVE VTR 300 Standard Filter Kit

Supply F7 / ePM2.5 70%, extract G3 / Coarse 50%
Standard filter kit
Fits SAVE VTR 300

In stock

Next day delivery available

£78.14

Systemair compatible F7 supply pocket filter for Systemair/Villavent BF VX 400 E or EV air filtration system.

In stock

Next day delivery
available

SKU: 212459

Compatible Filter For Systemair / Villavent BF VX 400 E or EV Supply Pocket Filter

F7
Replacement supply filter
Fits VX 400 E or EV

In stock

Next day delivery available

£80.35

Genuine Part

Systemair SAVE VTC 300 Optional Filter Kit 1

In stock

Next day delivery
available

SKU: 317700

Systemair SAVE VTC 300 Optional Filter Kit 1

Supply F8 / ePM1 70%, extract M5 / ePM10 50%
Optional filter kit
Fits SAVE VTC 300

In stock

Next day delivery available

£80.67

Genuine Part

Systemair SAVE VSR 500 Standard Filter Kit

In stock

Next day delivery
available

SKU: 25212

Systemair SAVE VSR 500 Standard Filter Kit

Supply F7 / ePM1 60%, extract M5 / ePM10 50%
Standard filter kit
Fits SAVE VSR 500

In stock

Next day delivery available

£81.65

Genuine Part

Systemair SAVE VTC 300 Standard Filter Kit

In stock

Next day delivery
available

SKU: 317699

Systemair SAVE VTC 300 Standard Filter Kit

Supply F7 / ePM1 60%, extract M5 / ePM10 50%
Standard filter kit
Fits SAVE VTC 300

In stock

Next day delivery available

£84.29

Genuine Part

Systemair SAVE VTC 500 Standard Filter Kit

In stock

Next day delivery
available

SKU: 161251

Systemair SAVE VTC 500 Standard Filter Kit

Supply F7 / ePM1 60%, extract M5 / ePM10 50%
Standard filter kit
Fits SAVE VTC 500

In stock

Next day delivery available

£84.29

Systemair FGR Filter Cassette Box - eFans Direct Ltd

Product data sheet

In stock

Next day delivery
available

SKU: 1802

Systemair FGR Filter Cassette Box - 100mm

100mm
Panel filter cassette
G3 filter fitted

In stock

Next day delivery available

£89.99

Genuine Part

Systemair SAVE VTC 300 Optional Filter Kit 2

In stock

Next day delivery
available

SKU: 317701

Systemair SAVE VTC 300 Optional Filter Kit 2

Supply F7 / ePM1 60% (bag), extract M5 / ePM10 50%
Optional filter kit
Fits SAVE VTC 300

In stock

Next day delivery available

£91.15

Genuine Part

In stock

Next day delivery
available

SKU: 212472

Systemair Save VSR 300 Replacement Supply Filter

F7
Replacement supply filter
Fits Save VSR 300

In stock

Next day delivery available

£92.99

Genuine Part

Systemair Villavent BF VR 700 EV and DCV replacement filter set for HVAC ventilation systems, shown in the image.

In stock

Next day delivery
available

SKU: 14957

Systemair / Villavent BF VR 700 EV and DCV Replacement Filter Set

F7 supply, G3 extract
Replacement filter set
Fits VR 700 EV and DCV

In stock

Next day delivery available

£93.99

Genuine Part

In stock

Next day delivery
available

SKU: 212473

Systemair Save VSR 300 Replacement Extract Filter

G3
Replacement extract filter
Fits Save VSR 300

In stock

Next day delivery available

£93.99

Systemair FGR filter cassette box for ducting, 125mm size, shown in a close-up image highlighting its construction and filter area.

Product data sheet

In stock

Next day delivery
available

SKU: 1804

Systemair FGR Filter Cassette Box - 125mm

125mm
Panel filter cassette
G3 filter fitted

In stock

Next day delivery available

£94.99

Genuine Part

In stock

Next day delivery
available

Frico SKU: 14875

Frico PA2EF10 External Intake Filter

Genuine Frico part
External intake filter for PA2500 air curtains (size 10)
Keeps intake air clean

In stock

Next day delivery available

£95

Genuine Part

In stock

Next day delivery
available

SKU: 205005

Systemair Topvex TR09 Extract Filter

Genuine Systemair part
Extract filter for Topvex TR09
Maintains rated airflow and filtration grade

In stock

Next day delivery available

£97

Genuine Part

Systemair Villavent BF VR 700 E and DC replacement filter set for air ventilation systems, showing filters in packaging.

In stock

Next day delivery
available

SKU: 14956

Systemair / Villavent BF VR 700 E and DC Replacement Filter Set

F7 supply, G3 extract
Replacement filter set
Fits VR 700 E and DC

In stock

Next day delivery available

£97.80

Genuine Part

Systemair Topvex TR1000/TR03 extract filter

In stock

Next day delivery
available

SKU: 203515

Systemair Topvex TR1000/TR03 Extract Filter

Genuine Systemair part
Extract filter for Topvex TR1000 / TR03
Maintains rated airflow and filtration grade

In stock

Next day delivery available

£98.26

Product data sheet

In stock

Next day delivery
available

SKU: 1807

Systemair FGR Filter Cassette Box - 150mm

150mm
Panel filter cassette
G3 filter fitted

In stock

Next day delivery available

£98.33

Genuine Part

In stock

Next day delivery
available

Frico SKU: 14876

Frico PA2EF15 External Intake Filter

Genuine Frico part
External intake filter for PA2500 air curtains (size 15)
Keeps intake air clean

In stock

Next day delivery available

£99

Genuine Part

In stock

Next day delivery
available

SKU: 212460

Systemair / Villavent BF VX 500 700 E and EV Replacement Supply Filter

F7
Replacement supply filter
Fits VX 500 700 E and EV

In stock

Next day delivery available

£99.99

Product data sheet

In stock

Next day delivery
available

SKU: 1812

Systemair FGR Filter Cassette Box - 200mm

200mm
Panel filter cassette
G3 filter fitted

In stock

Next day delivery available

£104.99

Genuine Part

Systemair SAVE VSR 150 Standard Filter Kit

In stock

Next day delivery
available

SKU: 161651

Systemair SAVE VSR 150 Standard Filter Kit

Supply F7 / ePM1 60%, extract M5 / ePM10 50%
Standard filter kit
Fits SAVE VSR 150

In stock

Next day delivery available

£105.75

Genuine Part

Systemair SAVE VSC 200 Standard Filter Kit

In stock

Next day delivery
available

SKU: 251905

Systemair SAVE VSC 200 Standard Filter Kit

Supply F7 / ePM1 60%, extract M5 / ePM10 50%
Standard filter kit
Fits SAVE VSC 200

In stock

Next day delivery available

£105.85

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Filters

Frequently asked questions

How often should I change my ventilation filters?

What do the filter grades G3, G4, M5 and F7 mean?

Which filter does my unit need?

Do I need to replace both the supply and extract filters?

What grade filter does a PIV unit use?

Can I wash and reuse ventilation filters?

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