How Do LGR Dehumidifiers Work?

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When dealing with water damage, you need the right tools and equipment to provide quality restoration services. One of the essential tools is a dehumidifier — or several dehumidifiers.

How do LGR dehumidifiers work, though — and how to do you know when you’ve found an LGR dehumidifier worth the investment? Here’s a look at the LGR dehumidifier, how it works and how to ensure you are getting a quality product for your water damage restoration business. If you have any questions about how LGR dehumidifiers work or whether or not low-grain refrigerant dehumidifiers are right for you, we are always here to help.

What Is an LGR Dehumidifier?

LGR stands for low-grain refrigerant, and LGR dehumidifiers use low-grain refrigeration to efficiently remove moisture from the air in a given space.

LGR dehumidifiers are much more efficient than conventional alternatives. How do they achieve this better efficiency? They add an extra step to the dehumidifying process that results in double cooling, which in turn leads to lower air temperature in the moisture-filled space — helping the dehumidifier remove more moisture from the air that passes through it.

How Do LGR Dehumidifiers Work?

LGR dehumidifiers use three different types of precooling systems

  1. A heat pipe system collects hot air, cools it, then heats and evaporates it once more. This process is repeated over and over with the aim of removing moisture from the air.
  2. A thermal siphon system uses a stacked hot and cold coil to perform the same type of repeated cycle as the heat pipe system.
  3. Finally, an air-to-air heat exchanger uses air to transfer heat rather than liquid refrigerants.

How Dehumidifier Moisture Removal Is Measured

When you are considering your dehumidifier options, you’ll find two different types of measurement. You may see the performance of some dehumidifiers measured in AHAM, while others are measured in saturation – often a dehumidifier will have both ratings listed. Here’s what those two terms mean.

AHAM ratings are measured at 60 percent humidity and 80 degrees Fahrenheit, which are considered average conditions. This is what the Association of Home Appliance Manufacturers recommends, which is how this measure earns its name. AHAM ratings are often lower than saturation ratings, but they provide a much more realistic picture of what a dehumidifier can do.

Saturation ratings are taken at 90 percent humidity and 90 degrees Fahrenheit, which are considered extreme conditions. Saturation gives you an idea of a dehumidifier’s maximum ability, though this will rarely be needed in the field.

In both cases, AHAM and saturation, what you’re seeing is an estimate of how much moisture a dehumidifier can extract in a day. Don’t choose a higher saturation rating of one dehumidifier over a lower AHAM rating of another, as you cannot accurately compare the two measurements.

Get the Best in Restoration Equipment With B-Air®

When you work in the water damage restoration industry, you need the appropriate knowledge and experience. You also want to have the best equipment — tools that help you do your best work. When it comes to almost any water damage restoration job, that needed equipment will include at least one dehumidifier — and most likely several.

At B-Air®, we provide LGR dehumidifiers options (see in our commercial dehumidifiers collection here) that represent the highest-quality standards. We provide both AHAM and saturation ratings for easy equipment comparison, and you’ll find dehumidifiers in different sizes and with different features.

Browse our selection of low-grain refrigerant (LGR) dehumidifier options today, or contact us to learn more about your options.