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LGR Dehumidifiers
LGR (low grain refrigerant) dehumidifiers use a pre-cooling stage to extract moisture at lower humidity levels than standard refrigerant units can reach, the technology specified in IICRC S500 structural drying protocols for water damage restoration. LGR units continue pulling moisture effectively when ambient RH drops to 40 to 45%, where standard dehumidifiers plateau. The professional standard for restoration contractors performing Class 2, 3, and 4 water damage drying.
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Abatement Technologies AT250RS LGR Dehumidifier – 266 PPD, 400 CFM, 115V
Abatement TechnologiesThe Abatement Technologies AT250RS AquaTrap is a low-grain refrigerant (LGR) dehumidifier for water damage restoration — 266 pints per day at satur...
View full detailsXPOWER XD-125Li LGR Dehumidifier – 125 PPD AHAM, Bluetooth, 420 CFM
XPOWERLGR Dehumidifier with 125-PPD Bluetooth Control and 40-Foot Auto PurgeThe XPOWER XD-125Li removes 125 pints per day at AHAM conditions (80°F, 60% R...
View full detailsXPOWER XtremeDry Mojave XDP1 DIY Drying System – LGR, 4 Air Movers, HEPA, 110V
XPOWERXPOWER XtremeDry Mojave DIY Pro-Drying System – Model XDP1 The XPOWER XtremeDry Mojave XDP1 is a pre-assembled water damage drying kit containing a...
View full detailsXPOWER XD-130Li LGR Dehumidifier – 125 PPD AHAM, 420 CFM, Bluetooth
XPOWERXPOWER XD-130Li LGR Dehumidifier – 125 PPD AHAM, 420 CFM The XPOWER XD-130Li is a Low Grain Refrigerant (LGR) dehumidifier rated at 125 pints per d...
View full detailsXPOWER VIKING CD-90L LGR Dehumidifier – 85 PPD AHAM, 180 CFM, R32
XPOWERLGR Dehumidifier with R32 Refrigerant and Auto Purge Condensate PumpThe XPOWER VIKING CD-90L removes 85 pints per day at AHAM conditions (80°F, 60%...
View full detailsXPOWER XD-85L2 LGR Dehumidifier – 85 PPD AHAM, 145 PPD Sat, 180 CFM, 115V
XPOWERXPOWER XD-85L2 Commercial LGR Dehumidifier The XPOWER XD-85L2 is an LGR dehumidifier rated at 85 PPD at AHAM conditions (80°F/60% RH) and 145 PPD a...
View full detailsXPOWER XD-165L LGR Dehumidifier – 165 PPD AHAM, 476 CFM, 115V, 121 lbs
XPOWERXPOWER XD-165L Low Grain Refrigerant (LGR) Dehumidifier The XPOWER XD-165L is an LGR dehumidifier rated at 165 PPD at AHAM conditions (80°F/60% RH)...
View full detailsAbatement Technologies AT200C LGR Dehumidifier – 110 PPD AHAM, 470 CFM, WiFi
Abatement Technologies110 PPD AHAM LGR Performance with Built-In WiFi and Remote MonitoringThe Abatement Technologies AT200C AQUATRAP removes 110 pints per day at AHAM c...
View full detailsBuy 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.
Frequently Asked Questions
What does LGR mean in a dehumidifier?
What is the difference between a standard and LGR dehumidifier?
Is an LGR dehumidifier worth it for water damage restoration?
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What size LGR dehumidifier do I need for water damage restoration?
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