Leizig Filter MERV11 (R410a Dehum for LG228, LG335)

What It Is

This is the OEM-matched replacement inlet filter for the Leizig LG228 (228 pints/day) and LG335 (335 pints/day) commercial dehumidifiers. Both units run R410a refrigerant and are engineered for sealed commercial cultivation rooms operating on 208–277V service. The filter element sits in the unit's intake pathway, protecting the evaporator coil from particulate buildup before conditioned air moves through the refrigerant circuit.

Rated to MERV 11 per ASHRAE 52.2 testing standards, the filter captures particles in the 1.0–10.0 micron range — covering fine dust, pollen, mold spores, and similar particulate common in active grow rooms. At MERV 11, you get ≥65% efficiency on 1.0–3.0 µm particles and ≥85% on 3.0–10.0 µm particles, providing meaningful protection without the elevated airflow resistance of MERV 13 media. This keeps the blower operating at rated CFM and the unit hitting its rated moisture removal numbers.

Who Needs This

Any facility running Leizig LG228 or LG335 dehumidifiers needs this filter on hand as a scheduled consumable. The LG228 pushes 520 CFM and pulls 228 pints per day; the LG335 moves 900 CFM at 335 pints per day. Both are designed for mid-to-large commercial flower rooms, veg rooms, and multi-light builds where transpiration loads are continuous and the dehumidifier runs 24/7.

In a commercial cultivation environment — active canopy, CO2 enrichment, high plant density — intake air is laden with particulate from growing media, plant matter, and foot traffic. A loaded filter reduces airflow, which directly cuts moisture removal capacity and forces the refrigerant circuit to work harder. Maintaining a clean filter on schedule is one of the lowest-cost interventions available to protect dehumidifier performance and rated efficiency.

Key Features

MERV 11 filtration is the factory-specified rating for this filter position in the LG228 and LG335. It intercepts the particulate types most common in cultivation spaces — dust, pollen, fine media particles, and mold spores — without restricting airflow to the coil. Leizig specifies filter inspection every 30–60 days for units operating in commercial grow environments. In high-density or high-particulate rooms, the shorter end of that window is the practical standard.

Filter removal and installation require no tools. Access the filter panel, pull the spent element, seat the replacement, and close out — the process is straightforward enough to be handled by any facility technician without specialized HVAC training. Keeping spare filters on-site eliminates any gap in protection during a scheduled swap or an unplanned inspection.

How It Fits Your Maintenance Program

Dirty filters in commercial dehumidifiers are a documented source of reduced performance — restricted airflow can cut moisture removal capacity measurably while increasing energy consumption. For operators managing tight VPD targets in flower, a dehumidifier running below rated capacity during a dense canopy phase is a crop risk, not just an equipment issue.

The practical approach is to stock a small buffer of replacement filters at the facility and rotate on a fixed schedule tied to your IPM or equipment inspection calendar. For LG228 and LG335 units running continuous duty in active rooms, treat 30-day inspections as the default and replace rather than clean when particulate loading is visible. This SKU (31800038) is the correct part for both units — do not substitute with a different MERV rating or a non-matched element, as an incorrect filter size or thickness can affect the seal at the filter housing and allow bypass air to reach the coil unfiltered.