As with every device powered by electricity, it makes sense to look into dehumidifier energy use.
When looking at how many watts does a dehumidifier use, you can see that dehumidifiers don’t draw that many amps or watts.
For everybody worried if dehumidifiers are expensive to run, here’s a quick answer: No.
Do dehumidifiers use a lot of electricity?
Not really. You can calculate exactly how does it cost to run a dehumidifier using this dehumidifier running cost calculator.
How Many Watts Does A Dehumidifier Use?
Dehumidifier energy use is rather low. An average small 30-pint dehumidifier uses 300W of energy. An average big 70-pint dehumidifier uses 700W of energy.
To put the energy use in perspective, here are how many watts some other devices draw:
Essentially, a dehumidifier draws much less electricity than a water heater, an air conditioner, and even a hair drier. An average dehumidifier draws about as much energy as a computer. If you check here how dehumidifiers work, you can see that majority of that energy is used to compress refrigerant gas.
Nevertheless, it makes sense to buy the most energy-efficient dehumidifier. Let’s see how we can evaluate which dehumidifiers are more energy-efficient than others.
Running the most energy-efficient dehumidifier for 10 hours can cost you less than $1.
Calculating The Energy Efficiency Of Dehumidifiers (Energy Star Label)
Energy-efficiency of dehumidifiers is expressed by ‘Energy Factor Value‘ or EEV for short, measured in liters per kilowatt-hour (L/kWh). By knowing the capacity and power of a dehumidifier, we can (with a bit of unit conversion) calculate the energy factor for every dehumidifier.
Here’s a quick calculation of how much running an EEV 2.0 (very energy-efficient) dehumidifier costs versus an EEV 1.0 (very energy-inefficient) dehumidifier. For the energy usage calculation, let’s assume the following:
- Both of them have a 70-pint capacity.
- We run them for 1,000 hours.
- The average cost of a kilowatt-hour (kWh) is 13.19 cents.
|Energy-Efficient Dehumidifier (EEV = 2.00)||Energy-Inefficient Dehumidifier (EEV = 1.00)|
|(Yearly) Electricity cost: $91,01||(Yearly) Electricity cost: $182,02|
It’s quite evident that it makes sense to shoot for the more efficient dehumidifiers. Here the difference in electricity bill can be almost $100/year. Energy efficiency has the biggest effect in the case of big commercial dehumidifiers. That’s why we ranked commercial dehumidifiers based on energy efficiency in this post.
In the list of the best dehumidifiers you can check here, we’ve calculated the energy factors and took them into account when specifying which ones are the best. All of them have the Energy-Star label for high energy efficiency. You can check the requirements for the Energy-Star label of the dehumidifier here.
Opt for dehumidifiers with high energy-efficiency to drive down the electricity costs. Dehumidifiers with the EEV of 1.5 or above are ideal.
Here are some key considerations to have in mind when figuring out power costs for a dehumidifier:
- Smaller dehumidifiers will have lower running costs. For example, these small 20-pint dehumidifiers will use a lot less electricity than big 50+ pint units.
- To optimize running costs, you should adequately size a dehumidifier. If the dehumidifier is too big, it might use more electricity than needed. You can check what size dehumidifier you need here.
- Running a dehumidifier on low, medium, or high setting will spend a different amount of electricity. If you don’t really know which setting is the best to use, you can consult this article about low vs medium vs high dehumidifier setting.
- If the dehumidifier electricity expenditure starts to increase, you might have a problem with your dehumidifier freezing up. This will cause a spike in the electricity bill. You can check symptoms of dehumidifier freezing up here to check if you have an icing problem.