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Buy Low Grain Refrigerant (LGR) Dehumidifiers for Water Damage Restoration
LGR Dehumidifiers at US Cleaning Tools — Picks for Restoration Crews
The low grain refrigerant (LGR) dehumidifier lineup at US Cleaning Tools covers the capacity range IICRC-certified water damage restoration crews source through their work — from compact 80-pint portable units for small-room flood response, up through 280-pint commercial dehumidifiers with auto-purge pumps for whole-structure drying. The most-shipped LGR in the catalog is the XPOWER XD-125Li LGR Dehumidifier — a 145-pint workhorse built specifically for IICRC S500 structural drying in the 40–60% RH range where standard refrigerant units lose extraction efficiency. Every LGR dehumidifier ships factory-direct from US warehouses with full manufacturer warranty, pre-sale sizing support at (978) 295-7538, and 2–8 business-day standard shipping. B2B Net-30 terms are available for qualified restoration accounts.
How Low Grain Refrigerant Technology Outperforms Standard Refrigerant Dehumidifiers
Standard refrigerant dehumidifiers cool incoming air below its dew point to condense moisture — efficient when ambient relative humidity is above 50–60%, but extraction drops sharply as the air dries. A low grain refrigerant (LGR) unit adds a pre-cooling stage that uses cool exhaust air from the condenser to pre-cool the incoming stream before it reaches the evaporator. The two-stage process sustains meaningful extraction at 40–50% RH where standard units plateau, and lets a single LGR unit carry a structural drying job from saturation through the dry-standard finish. The IICRC S500 Water Damage Restoration Standard specifies LGR technology as the preferred dehumidifier type for structural drying because the complete drying cycle requires extraction at progressively lower humidity levels as the job progresses.
Related: Commercial Dehumidifiers · Desiccant Dehumidifiers · Refrigerant Dehumidifiers · Air Movers
Sizing LGR Dehumidifiers for IICRC-Compliant Drying
LGR capacity ratings in pints per day (PPD) are measured under AHAM test conditions at 80°F and 60% RH — conditions that do not reflect the lower temperatures and progressively declining RH of an active structural drying job. More useful sizing metrics are extraction rate at AHAM and at lower RH conditions (some manufacturers publish 60% and 40% RH curves), and the unit's certified LGR performance standard. Equipment quantity for a structural drying job is calculated from total volume of wet material, the target drying standard (typically return to pre-loss moisture content), and the number of days in the drying window — not simply room square footage. The EPA mold prevention guidance establishes that maintaining moisture content below mold-growth thresholds requires continuous extraction through the complete drying cycle.
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