Humidifier and Dehumidifier In One: To Buy Or Not?

Can you buy a humidifier and dehumidifier in one? And if yes, does this combo humidifier dehumidifier appliance work as effectively as when both are separate?

Well, this is the 21st Century and anything that you can fathom in your mind is most probably already manufactured.

So, the answer is yes, you can find a 2 in one humidifier and dehumidifier unit. And not only can you get the dehumidifier humidifier combo, but you can actually get a three-in-one unit of humidifier, dehumidifier and air purifier.

For instance, you might consider buying the Danby PHD (DHCC6020) Silhouette 3-in-1on And there are other options too in other online marketplaces.

But … for most of the combo models, their reliability is questionable.

Why choose a humidifier dehumidifier combo?

The main benefit has to be space saving. It is one compact unit so you need just a small space to place it. If you had to buy each unit separately, that would most likely be double the space.

Another benefit is that you use less power than you would use with two units. It is just one plug, so you will only use one power outlet.

With a combo unit, you can dehumidify the air when need be and humidify it as the need arises. In another article, we looked at humidifier vs dehumidifier, and we agreed that you might need to buy both appliances.

Because of the different seasons that we experience in a year, you often find that in summer, you need a dehumidifier as there is always excess humidity.

In winter, we crank up the heaters, which dry the air, therefore requiring the use of a humidifier to keep our indoor humidity levels between 40 and 50%.

Finding a humidifier with dehumidifier combo units is hard. In any case, there’ve been many complaints about the units available in the market. However, it is possible to find humidifier air purifier combo units.

Even when you have a humidifier and dehumidifier in one unit, you will want to know what it is supposed to do. Otherwise, it is not worth spending money on.

Which is better: humidifier dehumidifier combo or single units?

To reiterate, the humidifier dehumidifier combo units are hard to find in the market. Therefore, you might opt to buy a humidifier and dehumidifier separately.

If you live in a city like Seattle, which is very humid, you might need a dehumidifier alone.

When you buy a modern unit with a humidistat, if the targeted humidity level is attained, it shuts off automatically. If the humidity increases above 50%, it turns on automatically to lower it.

If you live in a city such as Las Vegas, which has dry air, you will need a humidifier. Similar to the dehumidifier, buy one with a humidistat.

That way, when the set humidity level is reached, it stops adding more mist to your indoor air. When the humidity takes a dip, it starts automatically. Also note that an ultrasonic humidifier causes white dust. Thus, choose a cool or warm mist one.

The trick is to know what you need in your home. Both the humidifier and dehumidifier maintain the required humidity level of 40 to 50%, albeit from different ends of the spectrum. If you live in Florida, you could buy both units.

Another option is to have a whole house humidifier integrated to your HVAC system. Only an expert technician can do this. It is costly, but it saves you the trouble of buying a portable humidifier for every room.

You could also buy a whole house dehumidifier because sometimes, even a large dehumidifier such as the 70-pint Frigidaire dehumidifier might not be enough.

For both whole house units, only experts can install and service them.

Dehumidifier and humidifier in one: reliability

Unfortunately, in most of the combo models, reliability has been quite an issue. Therefore, you might want to get the separate units after all.

It would seem that the humidifier and dehumidifier all in one do not work very well. Also, they cost more money, and we assume they would also cost more money to fix if something went wrong.

Image of humidifier and dehumidifier all in one
dehumidifier and air purifier

When you are buying a dehumidifier, you need to consider many things. One of them is reliability. Will the unit lower the humidity in your home?

Some of the features that make dehumidifiers and humidifiers reliable include the humidistat. It tells your appliance when to shut down and when to start working again.

Another thing that you need to consider is the space rating. Even if you decide to buy the humidifier with a dehumidifier unit, you still have to consider the space rating.

If the space rating is 400 square feet, use it for a space that is between 200 and 400 square feet. It is important to know the size of the space that you will be humidifying or dehumidifying before you buy a humidifier or dehumidifier.


It is quite possible to buy a humidifier and dehumidifier in one. However, until there are better units in the market, which are more reliable, you might have to go with individual units.

Since the two units serve different purposes, you will need both units. Luckily, they are affordable and with good care and maintenance, they last a long time.