Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: How much energy does this unit use?  Where can I find this information, it not here?
Document: It's much quieter than our old Holmes unit, though it's still not a silent machine, especially on middle or fast fan speeds.According to customer service, you cannot use any sort of water treatment in this humidifier, like anti-bacteria or anti-scaling additives. So, if you have hard water or are on a well, you might have to clean the humidifier and replace the wick a lot more often.Proper replacement wicks are hard to find in bricks-n-mortar stores.
Please visit the following website to link to product information and support:)After 1 month of use the filter smells like a dirty dog. I think they sent us a refurbished unit. Honeywell, you have lost a loyal customer.
The only complaint I might summon up is that nowhere can I find how much power this unit consumes.
This is our second Honeywell humidifier. I was disappointed to find that this was the same off-white floor as the last. I thought it was pale grey. Second...this unit is loud!! It reminds me of an old microwave we had after we got married. The first unit was much quieter.
Once I got the humidity up in our home I now run 24 hrs on the lowest setting with a medium fan and it maintains us at a good humidity level. I find it quiet and much less obnoxious then a fan running. I really like this unit.
I have had this unit for about a month now and find it very effective. I have a 1600 sq. foot, two story condo with a cathedral ceiling. Before purchasing this unit, I had a humidifier in the kitchen and another in the master bedroom. The unit in the kitchen said it would cover 1300 square feet, and the one in the bedroom was for a single room. Together they should have handled the condo well, but that ceiling was too much for them, I think.
After a few days to a week, you get to know how long the unit lasts before it needs to be refilled. In addition, the unit empties one container at a time. When I check the unit, I simply lift up on the containers. When one is empty and the other still has water in it, you know it's time to fill the empty one. This is not rocket science and I find this design much better than the units that only have one fill container.
I need to crank the TV up if the unit is blowing on high, but it's not outrageous. The unit sometimes does rattle or vibrate, but a poke or two straightens it out. Light sleepers might find it to be too much noise--not the case for me.I don't understand the people complaining about making a mess on the floor. It's such a simple contraption. It's literally blowing air over water. That's it. I've moved the unit around pretty roughly and no water has sploshed out.
I usually find one tank empty or nearly so by morning. I only have to refill the second tank once a week. The tanks are emptied sequentially in use.If I forget to turn it off the unit will turn itself off when the tanks go dry.The filter is starting to break down after 5 weeks. My guess is that it may last maybe 8 weeks. I have an replacement on order.There have been some comments about the noise levels on the unit.
First, let me say thank you to others who leave reviews. I read them and value them. Sometimes, however, it is a little difficult to know how much credence to give to strongly negative or strongly positive reviews. Here is my meager contribution to this helpful body of information.This item does its job. It dumped 9 gallons of water into my 3000 sq ft home in the first 24 hours I had it. That raised my RH from 25% to 37%.
Answer: I used a kill-a-watt to measure how much power is used.  I'm assuming a worst case scenario of 24hrs a day operation and a power cost of 10 cents per kwh.In the fan high mode, the unit uses 65watts. 65watts x 24hrs=1560 watts /1000= 1.56kwh x .10= 15.6 cents per day1.56kwh x 30=46.8kwh x .10= $4.68 per month46.8kwh x 12=561.6kwh x .10= $56.16 per yearKeep in mind that your unit will probably never run anywhere near 24hrs a day so cost will be lower. Mine ran non-stop for 2-3 days and now it cycles on and off on low to easily maintain 40% humidity for 2100 sqft.  For those interested, the unit draws 55 watts on medium, and 45 watts on low.