Do Dehumidifier’s Save On Heating?

One of the questions people always seem to ask me—after they find out that I write dehumidifier reviews—is if using a dehumidifier saves money over not using one. This question is so prevalent and has been asked of me so many times, I have decided to go ahead and write the answer to it. This article is in fact my attempt to answer this age old question. Hopefully, it will adequately address the problem for not only the people who’ve asked me this question over the years but for anyone reading this article.

Before I can answer this question, I first have to explain how dehumidifiers work. Dehumidifiers work by moving air over refrigerating coils. The moisture that exists in the air in steam form is then cooled down and converted into a liquid that is collected in a bin for disposal. This results in the “drying” of the air.

Now, many people believe that dry air heats up faster than moist air. In fact, I know many people who would swear their life on this old wives tale. However, as much as I am afraid to disappoint them, your best dehumidifier isn’t going to do anything to cut your heating bill.

That’s because moist air conducts heat better than dry air. Dry air is in fact a very poor method for transferring heat. So why does this myth still persist? Well, it probably has a lot to do with an article that was misunderstood several decades ago.

I don’t remember who wrote the article, but in essence it said that if you wanted to save on heating costs, then you should use a humidifier. That’s right, a humidifier was recommended in the article. A device that is used to add moisture to the air. And that my friends, is why the myth of using a dehumidifier to lower heating costs still persists.

However, a dehumidifier will do one thing for your energy bills. It will save you money on your cooling costs. That’s right. If you use a dehumidifier in conjunction with your air conditioner, then you will not only have to run it less often but you may not have to run it at all when the temperature isn’t too high but the humidity is. This can result in some real savings over the course of the summer.

While I understand your disappoint that your dehumidifier won’t save you on heating costs, I hope that is equally matched by the fact that it can save you on your cooling bills. And not only will it do that, but it will also provide a whole range of other benefits. Including increasing your comfort level and by decreasing moisture that can irritate respiratory problems and allergies.