Dehumidifier Energy Efficiency (Learn the Basics)

This article is about energy efficiency of dehumidifiers. I will talk about how a dehumidifier uses energy, how to calculate it, and what to look for in an energy efficient one.

How Many Watts Does A Dehumidifier Use?

An average small 30 pint dehumidifier uses 300 watts of energy.
An average big 70 pint dehumidifier uses 700 watts of energy.

What are Dehumidifier Energy Efficiency Ratings?

The energy efficiency of dehumidifiers is measured in EER and by its energy factor. A higher energy factor means a more efficient dehumidifier.

Calculating Energy Efficiency Of Dehumidifiers (Energy Star Label)

The energy efficiency of a dehumidifier can be measured by the energy factor. It is how many liters of water are removed per kilowatt hour. A higher energy factor means it is more efficient.

Using the following calculation of how much an EEV 2.0 (high energy-efficiency) dehumidifier costs versus an EEV 1.0 (low energy-efficiency) dehumidifier. To do this, we will assume the following:

Both cans hold 70 pints.
Each were run for 1,000 hours.
The average cost per kilowatt-hour (kWh) of 13.19 cents.

In this case, it makes sense to buy a more efficient dehumidifier. You might save about $100/year on electricity. If you are buying a big one for your business, the energy-efficiency has the most impact.

See: How much electricity does a dehumidifier use?

Are There Energy Efficient Dehumidifiers?

Yes, there are energy-efficient dehumidifiers on the market. Dehumidifiers use less energy than you might think. It is said that dehumidifiers only accounts for about one per cent of a household’s total energy use, and that it is second in consumption to refrigerators.

Which is the Most Energy Efficient Dehumidifier?

A dehumidifier with an Energy Star rating is more energy efficient than one without.

The most energy efficient dehumidifiers are:

hOmeLabs Dehumidifiers
TOSOT Dehumidifiers
Vremi Dehumidifiers

Is a Larger Dehumidifier More Efficient?

Yes, larger capacity units use more energy. But they use that power for less time than smaller ones. So it will be better to buy 50 pint dehumidifiers. 35 pint units are not so efficient.

What about Desiccant Dehumidifier Energy Efficiency?

If you want an energy efficient system, use a dehumidifier with desiccant. But if the controls drift, it can be less effective and will cost more in energy use.

Energy Efficiency of Dehumidifier vs. Air Conditioner

Dehumidifiers only use 1/10th of what you would use in an air conditioner. You can save up to 70% by switching to inverter air conditioning units.

See: Dehumidifier vs. Air Conditioner