LGR Large Space Dehumidifier Review

Professional Grade Moisture Control for Large Spaces

Performance of the Lgr165l Dehumidifier

Rating: ★★★★☆ (4.5/5)

When you need serious moisture removal in demanding environments — be it a damp basement, large garage, crawlspace, warehouse, or post-water damage restoration — a 165 PPD LGR dehumidifier strikes a strong balance of power, efficiency, and reliability. The LGR165L dehumidifier produced by Preair is top rated online. This product boasts numerous excellent qualities. Its core components are sourced from renowned enterprises, ensuring quality. Impeccable craftsmanship: thanks to complete and mature production lines as well as skilled technical workers. It is efficient and easy to use. Thanks to the efforts of the research and development team, the dehumidifying capacity of this flood dehumidifier can reach 165 pints per day, and the control method is designed entirely from the user’s perspective.

Performance of the LGR165L Dehumidifier: Excellent (★★★★☆)

This unit lives up to its name: rated at 165 pints per day (PPD) under AHAM conditions, it consistently delivers high moisture extraction even in high humidity and warm conditions. In real-world rooms above 1,000 sq ft with open airflow, it typically reduces relative humidity (RH) from the 70s to the mid-50s within hours — a performance level many residential dehumidifiers simply can’t match.

The Low Grain Refrigerant (LGR) technology excels in lower temperature environments, where standard refrigerant dehumidifiers dramatically lose efficiency. Users with hard-to-dry spaces (uninsulated basements, large crawlspaces) often see meaningful drops in moisture levels where other machines struggle.

Pros:

Strong moisture removal in large/open spaces

Works effectively at moderate temperatures (45°F+)

Handles continuous operation without a significant performance drop

Cons:

The 165 PPD rating is AHAM-standard; real output varies with conditions

Not as fast as commercial restoration units rated above 200 PPD

Build Quality & Design of the LGR165L Dehumidifier: Solid (★★★★☆)

For this class of machine, the housing is robust and jobsite-ready. Thick molded plastic casing resists dents, and heavy-duty wheels make moving around large areas easier. Control panels are intuitive with clearly marked switches and status indicators for power and pump operation.

The included auto purge pump (on most models) is a major convenience — it eliminates frequent manual emptying by auto-discharging collected water through a hose.

Pros:

Rugged, jobsite-ready construction

Handles frequent movement and rough terrain

Integrated pump simplifies drainage

Cons:

Slightly larger and heavier than lower-capacity home units

Usability & Features of the LGR165L Dehumidifier: Very Good (★★★★☆)

Setup is straightforward: place on level ground, run the drain hose to a suitable outlet or drain, plug in, and start. The control interface lets you monitor operation in real time, and many models include automatic defrosting — essential when running in cooler conditions.

One minor downside for some users is noise — at high airflow, it’s louder than typical residential dehumidifiers, but comparable to other professional units in the same PPD class.

Pros:

Simple plug-and-play setup

Auto drain pump included

Many models include defrost and hose accessories

Cons:

Operational noise is noticeable (normal for large air movers)

Lgr165l High Capacity Dehumidifier with Pump

Value of the LGR165L Dehumidifier: Very Good (★★★★☆)

At its price point, an LGR165L dehumidifier sits between consumer home units and high-end pro restoration machines. For homeowners with persistent moisture issues or contractors needing frequent area drying, the investment is justified by faster drying times and better performance in challenging conditions.

Compared to cheaper units claiming similar PPD, this LGR model typically:

Maintains performance at lower temps

Removes moisture more consistently across different RH levels

Lasts longer under frequent use