Lgr vs. Desiccant Dehumidifiers: What Pros Use and Why

Refrigerant dehumidifiers, sometimes called compressor or LGR units, pull air over cold coils. Moisture condenses on the coils and drips into a collection tank or drain. The drier air then passes over warm coils and returns to the room. This process works well when the air temperature is above about 65 degrees Fahrenheit.

In warmer conditions, these units are energy-efficient and can remove a lot of water quickly. They are a common choice for drying wet drywall, flooring, and structural materials after a leak. In warm, humid climates, these units often handle the bulk of residential drying work.

The pros look at the temperature of the affected area first. If a basement is cold and damp, a desiccant unit often makes more sense. In a warm, humid room, a refrigerant unit usually dries faster and uses less power. They also check the moisture level you need to reach, since desiccants can go lower.

The size of the space and the amount of wet material matter too. A large flooded area may need several units working together, sometimes a mix of both types. The pros also think about ventilation and where the unit can drain, especially if you cannot empty a tank regularly.

For most residential water damage jobs, refrigerant units are the workhorse. Desiccant units come into play for specific situations, like drying inside wall cavities or when outdoor temperatures are low. The choice is not about which is better overall, but which fits the job.

• Refrigerant units excel in warm, humid rooms
• Desiccant units work in cooler spaces
• Desiccants can reach lower humidity levels
• Refrigerant units are often more energy-efficient
• Mix types for large or tricky drying jobs
• Check the space size and drainage options

If you are drying out a small area, you might rent a dehumidifier yourself. For a refrigerant unit, place it in a warm room with good airflow. For a desiccant unit, you can use it in cooler spaces, but be ready for it to use more electricity. Always empty the tank or set up a hose drain.

For larger water damage, the pros will bring in the right mix of equipment and monitor moisture levels over days. They often use moisture meters to track progress, not just a timer. Your job is to act quickly, remove standing water, and get air moving to help the drying process.

If you are unsure which type fits your situation, a water damage inspection can help identify the extent of the moisture and the sensible drying approach. That way, you avoid wasting time on a unit that cannot do the job.

• Act quickly to remove standing water
• Open windows and doors for airflow
• Use fans to keep air moving
• Empty dehumidifier tanks often
• Check moisture levels over several days
• Get an inspection for large or hidden damage