Difference Between LGR & Conventional Dehumidifier: Which One Should You Choose?

Choosing the right dehumidifier is critical for effective drying, mould prevention, and water damage restoration. One of the most common questions professionals ask is the difference between LGR and conventional dehumidifier systems — and which one performs better in real-world conditions.

In this article, we clearly explain how each type works, their advantages, limitations, and which is best suited for Australian environments, construction sites, and restoration projects.

What Is a Conventional Dehumidifier?

A conventional dehumidifier removes moisture by pulling humid air over refrigerated coils. As the air cools, moisture condenses into water and is collected or drained away. The dry air is then reheated and released back into the room.

Conventional dehumidifiers are commonly used for:

• Homes and apartments
• General humidity control
• Small commercial spaces
• Moderate moisture conditions

While effective in normal environments, conventional units lose efficiency as humidity levels drop or temperatures decrease.

What Is an LGR Dehumidifier?

LGR stands for Low Grain Refrigerant. LGR dehumidifiers use advanced refrigeration technology to remove moisture even when humidity levels are already low.

LGR dehumidifiers are specifically designed for:

• Water damage restoration
• Flood drying
• Severe moisture intrusion
• Construction and structural drying

Unlike conventional units, LGR dehumidifiers continue extracting moisture efficiently at low relative humidity and cooler temperatures.

Key Differences Between LGR & Conventional Dehumidifiers

Which Dehumidifier Is Better for Mould Removal?

For mould remediation, maintaining low humidity over extended periods is critical. LGR dehumidifiers are better suited because they:

• Continue removing moisture below 50% RH
• Dry structural materials faster
• Prevent moisture rebound
• Reduce drying time significantly

Conventional dehumidifiers may help control humidity but are less effective once moisture levels drop.

Which Is Better for Water Damage Restoration?

For water damage and flood restoration, LGR dehumidifiers are the industry standard. Restoration professionals prefer LGR units because they:

• Work efficiently in cooler, wetter environments
• Remove more moisture per day
• Support faster project turnaround
• Meet insurance and restoration industry requirements

When a Conventional Dehumidifier Is Enough

A conventional dehumidifier may be sufficient for:

• General household humidity issues
• Minor condensation problems
• Bathrooms and laundry rooms
• Small offices or retail spaces

However, they are not recommended for large-scale drying, construction sites, or serious water damage.

Cost vs Performance: Is LGR Worth It?

While LGR dehumidifiers have a higher upfront cost, they often deliver better long-term value due to:

• Faster drying times
• Lower labour costs
• Reduced energy consumption per litre removed
• Fewer mould-related call-backs

For professionals, builders, and restoration companies, LGR dehumidifiers are a smart investment.

Final Verdict

The difference between LGR and conventional dehumidifiers comes down to performance, efficiency, and application. Conventional dehumidifiers are suitable for everyday humidity control, while LGR dehumidifiers are purpose-built for professional drying, water damage restoration, and mould prevention.

If speed, reliability, and deep moisture removal matter — especially in Australian conditions — an LGR dehumidifier is the superior choice.