Do You Know That Dehumidifiers Can Be Stacked During Use

Some dehumidifiers can be stacked during use, but only specific commercial models designed for stacking. It is not safe for most home dehumidifiers.

When Dehumidifiers CAN Be Stacked

Only commercial/industrial LGR (Low-Grain Refrigerant) dehumidifiers — typically used for:

Water damage restoration

Flood cleanup

Construction drying

Crawl space/basement drying

These units often feature:

Flat, reinforced tops

Anti-slip stacking grooves

Side air intake & top exhaust, so airflow isn't blocked

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When Dehumidifiers Must NOT Be Stacked

You should never stack:

Household dehumidifiers (standing vertical type)

Portable consumer-grade units (20–70 pint)

Any model not explicitly labeled “stackable.”

Why?

They block airflow → overheating

They tip over easily → refrigerant damage

They reduce efficiency

They void the warranty

Why Some Industrial Models Support Stacking During Use

LGR dehumidifiers are purposely built to:

Save floor space in tight job sites

Increase drying intensity in a vertical airflow path

Allow multiple units to operate side-by-side without interference

How Do You Know If Your Unit Is Not Stackable

If the manual does not mention:

“Stackable”

“Stack during operation”

“Air intake/exhaust isolation”

… then assume stacking is unsafe.