Why Do Restoration Pros Use Lgr Dehumidifiers?
Last updated October 25, 2026
The short answer
What an Lgr Dehumidifier Is
An LGR, or low grain refrigerant, dehumidifier is a powerful industrial-grade tool. It is engineered to extract water vapor from air with high humidity levels where standard dehumidifiers become inefficient. This makes it a cornerstone in professional drying strategies after significant water damage.
It works by cooling air to a point where moisture condenses, even when the air is nearly saturated. The collected water drains away, and the dry air is reheated before being circulated. This cycle continues until the target humidity is achieved in the affected space.
The Core Benefit for Drying
The primary advantage is the ability to dry structures much faster than conventional equipment. Speed is essential to save building materials and personal belongings from permanent ruin. A faster dry-out also reduces the window for microbial growth.
When walls, floors, and subfloors are saturated, they release moisture into the air. An LGR unit aggressively pulls that moisture out, creating a drying gradient that draws more water from the wet materials. This systematic approach is necessary for a complete and verified dry standard.
Preventing Mold and Structural Damage
Mold spores are everywhere and begin growing within days on damp surfaces. By using LGR dehumidifiers, the pros quickly lower the humidity that mold needs to thrive. This proactive step is a key part of preventing a mold infestation.
Prolonged wetness also weakens wood framing, drywall, and flooring. Accelerated drying with LGR equipment helps preserve the structural integrity of your home. It minimizes the extent of repairs needed, which can influence the overall restoration cost.
- Inhibits mold spore germination by creating a dry environment.
- Reduces the risk of wood rot and swelling in structural members.
- Helps prevent the warping and delamination of hardwood floors.
- Lowers humidity to protect electronics and sensitive documents.
- Limits the spread of musty odors that embed in porous materials.
- Supports a healthier indoor air quality after the water event.
When Lgr Equipment Is Essential
These dehumidifiers are not for every minor spill. They are deployed for Category 1 clean water losses that have sat for over 24 hours, or for Category 2 and 3 contaminated water incidents. They are also vital after major flooding or when hidden cavities like wall interiors are wet.
The decision is based on inspection readings from moisture meters. If the relative humidity in a room is very high or the materials have a high moisture content, LGRs become necessary. Their use is part of a calculated drying plan tailored to your specific damage.
The Professional Drying Process
Using LGR dehumidifiers is just one component of a full drying system. The pros also use high-speed air movers to evaporate moisture from surfaces and specialized tools to monitor progress. This combined approach ensures moisture is removed from the air and materials efficiently.
They take regular moisture readings to track the drying progress. The equipment runs continuously until the affected areas meet industry drying standards. Only then is the job considered complete, helping to ensure your home is truly dry and stable.
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Call Now (832) 979-5241Frequently asked questions
Can I rent an LGR dehumidifier myself?
While some equipment rental outlets may offer them, professional drying involves more than just the machine. The pros use moisture meters to place equipment strategically and monitor progress to a verified dry standard, which is difficult to achieve without training.
How long do they need to run?
The runtime depends entirely on the extent of water damage, the materials affected, and the indoor climate. It could be several days. The pros use scientific monitoring to determine when the area is dry, not a preset time frame.
Does insurance cover the use of this equipment?
The cost for professional drying services, including LGR dehumidifiers, is often a covered part of a water damage claim if the cause is a sudden, accidental event. Policies vary, and your insurer decides what is covered.