Mitsubishi Lossnay Filters

Mitsubishi Lossnay replacement filters for MVHR systems

Mitsubishi Lossnay filters help protect your mechanical ventilation with heat recovery (MVHR) unit and filter the air moving through its supply and extract paths. This category brings together original Mitsubishi filter sets for selected Lossnay VL units and quality-tested, compatible Filter Express alternatives for selected LGH-RVX and LGH-VX units.

The filter sets currently listed here are rated G4 / ISO Coarse 60%. They are intended for basic coarse-particle filtration, helping reduce larger dust, lint, plant debris and similar material reaching the ventilation unit or entering with the supply air. They are not universal Mitsubishi air filters: this range is specifically for compatible Lossnay ventilation systems, not Mitsubishi vehicles or unrelated air-conditioning equipment.

Find the complete Lossnay model on the unit label, select that model, then confirm the dimensions and set contents on the product page. For another ventilation brand, browse all MVHR replacement filters.

Find the right Mitsubishi Lossnay filter by series

Lossnay filters are model-specific. Similar names do not guarantee the same size, quantity or fitting arrangement, and filters should not be assumed to interchange between VL, LGH-RVX and LGH-VX units. Start with the family name, then match every number and suffix shown on the rating label.

Mitsubishi Lossnay VL filters

The current Mitsubishi Lossnay VL filter range covers the VL-250, VL-350 and VL-500. These original Mitsubishi sets contain two framed G4 filters: one for the extract path and one for the outdoor-air supply path. The filters are made in the Netherlands by Mitsubishi’s European production partner and use pleated Z-line media.

If you need a Mitsubishi Lossnay VL-250 filter, do not substitute a VL-350 or VL-500 set because the listed dimensions differ. The same applies to a Mitsubishi VL-50 filter or Mitsubishi VL-100 filter: do not assume compatibility unless the exact model and measurements appear in the product information.

Mitsubishi Lossnay LGH-RVX and LGH-VX filters

The Mitsubishi Lossnay LGH filter range includes compatible house-brand sets for selected LGH units. Current options include LGH-15RVX, LGH-25RVX, LGH-35RVX, LGH-50RVX and LGH-65RVX models. These EU-made replacements use synthetic filter media and are designed for the model stated on each product page.

• LGH-15RVX: the current set contains two G4 filters.
• LGH-25RVX, LGH-35RVX, LGH-50RVX and LGH-65RVX: the current sets contain four G4 filters, covering two supply and two extract positions.

Whether you need a Mitsubishi LGH-35RVX filter, LGH-50RVX filter or another LGH set, the exact unit code remains the deciding factor. A correct series name without the correct number is not enough.

How to choose the correct Mitsubishi MVHR filter

Match the unit first and the filtration option second. Use this check before adding any Lossnay replacement filters to your basket:

1. Read the complete model label. Look on the casing, access panel or unit documentation for “Lossnay”, the series and the full code, including letters or suffixes.
2. Choose the matching family. Confirm whether the unit is VL, LGH-RVX or LGH-VX. Do not select on the Mitsubishi name alone.
3. Compare the dimensions. If the label is difficult to read, measure the old filters in millimetres and compare length × width × depth with the product specification.
4. Check the set configuration. Confirm whether the listing supplies two or four filters and whether every required supply and extract position is covered.
5. Choose original or compatible. Both choices must match the model, measurements, class and set contents. Brand preference and price come after compatibility.
6. Make a final product-page check. Treat the product’s model list, technical information and any original part number as the authority before purchase.

Use a part number only when the chosen listing explicitly includes it. If the label is missing, the suffix is unclear or your model is not shown, ask Filter Express to check compatibility. Send the full model, old-filter dimensions and a clear rating-label photo.

What G4 and ISO Coarse 60% mean

G4 is a familiar class from the older EN 779 system, while ISO 16890 describes coarse filters by measured performance. These products are listed as G4 and ISO Coarse 60%; do not assume every G4 filter has an identical ISO result.

Coarse filtration is intended mainly for larger airborne material such as visible dust, textile lint, plant fragments, insect debris, sand and larger pollen grains. It helps limit general build-up, but it should not be presented as fine-particle, smoke, gas or odour filtration. For a fuller explanation of the old and current systems, see our guide to MVHR filter classes.

Supply and extract filters have different roles

• Extract-side filters catch larger material carried from rooms towards the unit, helping reduce dust build-up on internal components.
• Supply-side filters filter incoming outdoor air before it is distributed indoors, reducing the amount of coarse debris entering the ventilation path.

Both positions matter. A wrong size or arrangement can allow air to bypass the media. Use the configuration documented for the exact unit rather than changing class because another option sounds stronger.

Original Mitsubishi filters or compatible house-brand replacements?

Original and compatible Mitsubishi Lossnay replacement filters can both be suitable when the complete specification matches. The practical choice depends on whether you prefer a manufacturer-branded part or an affordable alternative developed for the listed unit.

• Original Mitsubishi VL filters are manufacturer-branded, framed filter sets made in the Netherlands to the specifications stated for the listed VL models.
• Filter Express house-brand LGH filters are compatible alternatives made in the European Union by specialist manufacturing partners and quality checked for the stated models.
• Both options should be compared by exact compatibility, dimensions, filtration rating and quantity—not by appearance or price alone.

“Compatible” means designed for the model named on the listing; it does not mean the house-brand product is made or approved by Mitsubishi. The quality type is stated on each product page.

When should Mitsubishi Lossnay filters be replaced?

As general guidance, inspect Lossnay filters regularly and expect replacement around every 3–6 months. Follow the unit manual and filter indicator; local air and system use affect the interval. A visibly clogged filter may need attention sooner.

Check the filters more frequently when:

• the property is near a busy road, construction work, industry or another dusty source;
• seasonal pollen, leaves or outdoor debris levels are high;
• there are pets, indoor smoking or unusually high occupancy;
• the unit runs at higher airflow for long periods;
• airflow seems reduced, the unit sounds different or the filter reminder appears.

Timely Lossnay filter replacement helps maintain the intended air path and reduces the amount of dust reaching the unit. It cannot correct an unrelated mechanical fault, so persistent noise or poor airflow after a correct filter change should be investigated separately. Learn more about why regular MVHR filter replacement matters.

How to change a Mitsubishi Lossnay filter

For every Mitsubishi Lossnay filter change, follow the unit manual and the model-specific instructions under the “How to change” tab on the selected product page. The exact access panels, filter positions and reset procedure vary between VL and LGH systems.

1. Place the unit in the safe or standby state specified by its manual.
2. Note the position and orientation of each old supply and extract filter before removal.
3. Remove loaded filters carefully so loose dust does not fall into the unit.
4. Fit the correct replacements fully and evenly, without gaps around the media.
5. Close the unit, restart it as instructed and reset the filter reminder if required.

Do not wash a disposable Lossnay filter unless the documentation for that exact product says it is washable. Water, vacuuming or aggressive cleaning can damage the media and is not a substitute for replacing a loaded filter.

Why buy Mitsubishi ventilation filters from Filter Express?

Filter Express organises Mitsubishi ventilation filters around the details that determine fit, helping you move from a broad Mitsubishi filter search to the correct Lossnay set with fewer assumptions.

• Model-led selection for verified VL, LGH-RVX and LGH-VX applications;
• original and compatible choices where listed, supporting different preferences and budgets;
• clear dimensions, ratings and pack quantities on individual product pages;
• European manufacturing across the current original and house-brand range;
• model-specific replacement guidance and personal compatibility support when the label is unclear.

Start with your complete Mitsubishi Lossnay model, then compare the sets shown above. Confirm the unit code, dimensions and filter quantity before ordering. That check is the most reliable way to choose a replacement that fits and provides the specified coarse filtration.