How Often Should LGR Dehumidifiers Be Replaced?

LGR (Low Grain Refrigerant) dehumidifiers do not have a hard-coded "expiration date," but industry guidance and manufacturer experience give clear ranges you can use to plan replacements.

Typical Replacement Interval of an LGR Dehumidifier

Commercial/Restoration LGR Units: Generally 5–10 years with proper maintenance and usage. High-quality units often fall near the upper end of this range.

General Rule: Like other refrigerant dehumidifiers, you'll commonly see about 5–7 years as a practical dehumidifier lifespan before performance drops or failure becomes likely.

What Influences When to Replace an LGR Dehumidifier

Replacement is not purely age-based; it depends on service life indicators and usage conditions:

Usage Intensity

Units running 24/7 in extreme humidity wear components faster.

Light or occasional use can extend life toward 8–10+ years.

Maintenance & Care of the Dehumidifier

Regular cleaning of filters and coils, inspection of pumps and hoses, and proper storage help prolong service life.

Neglect speeds wear and increases the likelihood of compressor or sealed-system failure.

Performance Degradation

When to Consider Replacing an LGR Dehumidifier

It takes significantly longer to achieve the target humidity.

Energy use increases for the same moisture removal.

Parts fail repeatedly, or repair costs approach replacement costs.

Repair vs. Replace Economics

Dehumidifier compressors and sealed systems are costly to fix. If major repairs exceed ~50 % of a new unit's cost, replacement is generally more economical.

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Signs to Replace an LGR Dehumidifier

Replace the LGR dehumidifier instead of just servicing it when you observe:

Reduced moisture removal capacity even after maintenance.

Frequent breakdowns or escalating repair costs.

Unusual noises, overheating, or electrical issues.

Warranty has expired. These units often have limited warranty coverage on major components like the compressor.

Plan for LGR dehumidifier replacement every 5–10 years under normal professional use, sooner if performance degrades or maintenance becomes frequent or costly. Proper upkeep can maximize service life, but age and wear will eventually necessitate a new unit.