Mitsubishi Lossnay LGH-15RVX filters

No. Lossnay is the name of Mitsubishi Electric's heat-recovery ventilation line and its heat exchange element — the filters themselves are conventional G4 filters that keep dust off the Lossnay core. We stock sets for the Lossnay VL-250, VL-350 and VL-500 (originals) and the LGH-15RVX to LGH-100VX (house brand). The model number on the casing label confirms the exact size.

The Lossnay filter sets we stock are all G4. VL-series units and the LGH-15RVX take a set of two G4 filters, while the larger LGH-25RVX to LGH-100VX take a set of four. G4 protects the Lossnay core from coarse dust and keeps airflow steady.

The standard 3–6 month interval applies to Lossnay units, though the built-in maintenance indicator on many models will flag when airflow has dropped due to filter loading. Treat that indicator as a helpful reminder rather than the sole basis for replacement timing, especially in higher-pollution areas.

Filter compatibility generally holds within the same Lossnay series and housing generation, but Mitsubishi has updated internal filter dimensions across some model refreshes even under a similar product name. Matching by your exact model number, or measuring the filter directly, is the safest way to confirm fit across generations.

The larger Lossnay LGH units — LGH-25RVX, 35RVX, 50RVX, 65RVX and 100VX — take four filters in total, so our sets for these models include all four G4 filters. Change them together to keep the airflow balanced. The LGH-15RVX and the VL-series units take two filters.

Yes. An invoice showing VAT is sent automatically by e-mail after every purchase, and a pro forma invoice can be issued in advance if your accounting needs one before payment — just send us the details and we ship once payment arrives. Companies with a valid EU VAT identification number see prices without VAT (0%) in the basket once the number has been verified. Lossnay units are more often found in offices and commercial spaces than in homes, so if you are ordering for several units at once, note that above four filter sets it is worth contacting us for an additional volume discount.