Do Dehumidifiers Use a Lot of Electricity in Australia?

Low-grain refrigerant (LGR) dehumidifiers are highly efficient at extracting moisture, particularly in environments with extreme humidity or low dew points. However, their electricity usage can vary depending on the model, capacity, and frequency of use. Here’s a breakdown of their energy consumption and efficiency in the Australian context:

 

Energy Consumption of LGR Dehumidifiers

Typical Power Usage:

LGR dehumidifiers typically consume 500–1200 watts per hour depending on size and capacity.

Higher-capacity units (e.g., for flood restoration) will consume more power but also remove significantly more moisture.

 

Efficiency:

Low grain dehumidifiers are more energy-efficient than standard refrigerant dehumidifiers because:

They use advanced cooling coils and reheat processes to extract more moisture with less energy.

They operate efficiently in high-humidity and low-temperature environments common in Australian winters or flood-prone areas.

 

Energy Cost in Australia:

Average electricity cost: $0.20–$0.40 per kWh (varies by state and provider).

For a 700W unit running for 10 hours/day:

700 W×10 hours=7 kWh

Daily cost = 7 kWh×0.30 $/kWh=2.10 $/day

 

Energy Consumption of PREAIR LGR Dehumidifiers

 

PREAIR LGR Dehumidifiers for Australia
NO.	ALGR65	ALGR110	ALGR130L
Power	220V/50Hz	240V/50Hz	220-240V/50Hz
Rated Current	4.6 A	6 A	5.7 A
Rated Power	833 W	1291 W	1230 W
Energy Efficiency	1.98 L/kWh	2.21 L/kWh	2.63 L/kWh
Dehumidification Capacity  (30 ℃/80% RH)	65 L/day	110 L/day	130 L/D
Daily Power Consumption(10h)	8.33kWh	12.91 kWh	12.3 kWh
Daily Cost in AUS.	2.499 $/day	3.873 $/day	3.69 $/day

 

Factors That Influence Electricity Usage of LGR Dehumidifiers

Operating Conditions:

High humidity: More energy is needed to remove excess moisture.

Low temperatures: May increase power consumption due to defrost cycles.

Usage Duration:

Continuous use for flood restoration will consume more energy than periodic use for maintaining indoor air quality.

Dehumidifier Size:

Larger units with higher pint/day capacity will naturally use more power.

 

Reducing Electricity Costs of LGR Dehumidifiers

Choose Energy-Efficient Models:

Look for Energy Star-rated LGR dehumidifiers where available.

Opt for water damage restoration dehumidifiers with adjustable settings and automatic shutoff.

Use Smartly:

Run the unit during peak humidity times rather than continuously.

Close windows and doors to improve efficiency.

Maintenance:

Clean filters and coils regularly to maintain optimal performance.

 

Is the LGR Dehumidifier Worth It in Australia?

LGR dehumidifiers may consume slightly more electricity upfront than smaller units but are cost-effective in high-humidity or flood-prone areas due to their efficiency and superior performance.

If you're using it for restoration purposes or maintaining a very damp environment, the energy usage is justified by the benefits of mold prevention and structural preservation.