OEM-matched MERV 13 filter for Leizig LG228 and LG335 R410a dehumidifiers — tool-free replacement.
The Leizig MERV 13 Replacement Filter (SKU 31800012) is the factory-matched air filter for the LG228 and LG335 R410a commercial dehumidifiers, maintaining rated airflow, dehumidification capacity, and crop-safe air quality between cycles.
This is the OEM replacement air filter for the Leizig LG228 (228 pints/day) and LG335 (335 pints/day) R410a commercial dehumidifiers. Both units draw room air through a pleated filter media before it contacts the evaporator coil — that filter is this part. SKU 31800012 is the factory-specified MERV 13 grade for these two models.
MERV 13 is the highest filter rating recommended for commercial dehumidifier applications. At that rating, the media captures up to 95% of airborne particles, including dust, pollen, mold spores, bacteria, virus carriers, and microscopic allergens that lower-rated filters pass through. In a licensed cannabis or hemp facility, that matters: the dehumidifier is running continuously, cycling large volumes of grow-room air, and a degraded or wrong-rated filter turns a controlled environment into a cross-contamination vector.
The LG228 moves 520 CFM of room air; the LG335 moves 900 CFM. Every cubic foot of that air passes through the filter before reaching the coil. A clogged or undersized filter creates back-pressure that reduces the unit's actual moisture removal rate and drives up energy consumption — the unit runs longer cycles to hit the same setpoint, and it still misses it. A clean, correctly rated filter is what allows these units to perform at their published efficiency ratings.
In cannabis cultivation specifically, the filter also functions as the first line of defense against airborne pathogen transfer between cycles. Swapping the filter at room turnover is standard practice for a reason: mold spores, powdery mildew conidia, and bacterial matter caught in a spent filter from one cycle can re-enter the room during the next if the filter isn't changed. Running a MERV 13 — not a MERV 8 or a washable foam screen — closes that gap.
The filter is designed for tool-free replacement on both the LG228 and LG335. No disconnect, no fasteners, no service call required. Access the filter housing, pull the spent cartridge, seat the new one, and the unit is back online. Leizig's filter housing design on this series is intended to support in-house maintenance without technician involvement.
Industry-standard guidance for MERV 13 media in active commercial grow environments is to change the filter every 3 to 6 months under normal conditions — or at every room turn, whichever comes first. In high-particulate environments (heavy defoliation, significant canopy disturbance, CO2 enrichment rooms), visual inspection every 2 to 3 weeks is advisable. A visibly loaded or restricted filter should be changed regardless of calendar interval. Stocking a rotation of replacement filters on-site eliminates the turnover-day delay.
SKU 31800012 is specifically matched to the Leizig LG228 and LG335 dehumidifier platforms. It is not a cross-compatible part for other Leizig models (LG508, LG880) — those units use different filter housings and dimensions. If you're running multiple Leizig units across different capacity tiers, confirm the model designation on each unit before ordering filters.
Hydro Supply Co. carries Leizig accessories alongside the full Leizig dehumidifier lineup. Request a quote for single-unit or facility-wide filter quantities — operators running multiple LG228 or LG335 units across several rooms can build a standing order to cover a full season of scheduled maintenance intervals.
| SKU | 31800012 |
| Brand | Leizig |
| Filter Rating | MERV 13 |
| Compatible Models | Leizig LG228, Leizig LG335 |
| Refrigerant Platform | R410a |
| Installation | Tool-free |
| Particle Capture Efficiency | Up to 95% of airborne particles |
| Recommended Replacement Interval | Every 3–6 months or at each room turnover |
| Category | Dehumidifier Accessory / Replacement Filter |
No. SKU 31800012 is sized and spec'd for the LG228 and LG335 only. The LG508 and LG880 use different filter housings and require their own replacement parts. Check your unit's model label before ordering.
Every 3 to 6 months under standard conditions, or at each room turnover — whichever comes first. In high-particulate environments, visually inspect the filter every 2 to 3 weeks. A clogged filter reduces the unit's actual dehumidification output and should be changed as soon as airflow restriction is visible, regardless of time elapsed.
MERV 13 is the factory-specified rating for these units and the highest grade recommended for commercial dehumidifier applications in controlled growing environments. It captures up to 95% of airborne particles including mold spores, bacteria, and virus carriers — contaminants that MERV 8 or lower-rated media passes through. Using a lower-rated filter may not void the warranty on its own, but it does reduce the unit's ability to protect crop air quality.
No. This is a pleated disposable cartridge, not a washable foam or mesh screen. Washing pleated MERV 13 media degrades the electrostatic properties of the filter and collapses the pleat structure, reducing both particle capture efficiency and airflow. Replace it on schedule.
A restricted filter creates back-pressure across the evaporator coil. The unit's blower works harder, airflow through the coil drops, and the actual moisture removal rate falls below the rated pints-per-day figure — even though the unit appears to be running normally. Extended operation with a clogged filter can also cause the coil to ice over and may shorten compressor life.
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