Why is my dehumidifier blowing cold air?

A couple of times in the life of your dehumidifier, you might experience the problem of the unit blowing cold air.

You are not alone. Many people experience this.

Well, appliances make our life so much richer and enjoyable. However, they do have some side effects too. For instance, in the past we looked at an article on humidifier sickness symptoms. Yeah, it is not all bliss now, is it?

So, why is my dehumidifier blowing cold air?

Start by checking the basic things such as water. If it is not lowering humidity, that’s the reason why it’s blowing out cold air. By default, dehumidifiers should blow out hot air. Air conditioners blow out cold air to cool the room.

A dehumidifier should not blow out cold air

dehumidifier that blows cold air

A dehumidifier should blow out hot air. The heat further lowers the humidity. When my dehumidifier blows out cold air, I know there is a problem.

In the past, we looked at Pure Enrichment Humidifier not working.  Many things can cause a dehumidifier to blow cold air or fail to work generally.

We also looked at the problem of humidifier white dust. But do not let these problems dissuade you from getting a humidifier.

You can see there is always something to take care of.  When you take care of your appliances, they take good care of you.

Most people ask why their Hisense dehumidifier is blowing cold air, but all dehumidifiers work the same way, irrespective of brand name.

How to Troubleshoot Dehumidifier Blowing Cold Air

Put your hand against the vents of the dehumidifier, you will feel hot and dry air coming out of the appliance.

That is how it is supposed to work.

But if you feel cold air on your hand, you need to find out what is not working as it should.

It could be one of the following things:

1. The compressor might not be working

Image of dehumidifier blowing cold air and not collecting water
Dehumidifier compressor

When the compressor inside the dehumidifier is working, it will release hot air to the surrounding. If you notice that you are only getting cold air, you might want to check the compressor.

When the compressor is broken, you might know from a clicking noise that starts when you turn the unit on.

But first, what does the compressor do? Its main work is to circulate the refrigerant throughout the dehumidifier coils.

The coils then condense the vapor from the hot air that the appliance has drawn from the room. That way, the water (humidity) is collected in a reservoir or it is drained out.

If the compressor breaks down, the refrigerant is not going to circulate. Therefore, the coils will not condense the vapor and the dehumidifier will blow out cold air.

Simply put, when the compressor fails, it means the dehumidifier is not dehumidifying.

What can you do about a failed compressor for a dehumidifier blowing cold air fix? Well, if you are in Canada or in the USA, call the manufacturer or email them if the warranty is still valid.

If the warranty period is expired, just buy a new dehumidifier since replacing a compressor can cost a lot.

Dehumidifier blowing cold air and not collecting water

Image of too cold air in room

If you have a dehumidifier that blows cold air and it is not collecting water, you need to fix it or replace it.

When you experience such issues, it means the appliance is not dehumidifying your indoor air.

The main cause of the dehumidifier not collecting water is a broken compressor. This brings us to the problem of the compressor then, which means having to buy another appliance or calling for a replacement if the warranty is still valid.

Also read: Best air purifier for cigarette smoke removal

If the dehumidifier coils do not have refrigerant flowing through them, there is no condensation taking place. Therefore, the air comes back into the room cold and humid.

When the dehumidifier coils are icing up

Image of what temperature should air coming out of dehumidifier be

It is recommended that you run a dehumidifier in a temperature of 60 degrees Fahrenheit on the lowest. However, some dehumidifiers might be able to operate in a temperature as low as 42 degrees Fahrenheit.

If you are running it in low temperature, you might have the problem of a dehumidifier blowing cold air. When the coils ice up, the dehumidifying operation shuts down so that air can blow over the coils and thaw them out.

In such a case, taking the dehumidifier to a warmer room will get it to start blowing hot air out again. It is also a good idea to check whether the dehumidifier coils are clean.

When the coils are iced over, the dehumidifier might start leaking from the bottom as the ice starts to thaw out.

Meaco dehumidifier blowing out cold air

Image of meaco dehumidifier blowing out cold air

Since 1991, UK-based Meaco has been making dehumidifiers to meet all needs, sizes and budgets. In the UK, their products are very popular.

Meaco dehumidifier troubleshooting is vital if you have one of their units and it starts blowing cold air. There are a few questions to ask here:

  • Is the dehumidifier doing its primary job (drawing water from air)?
  • How cold is the air coming from the dehumidifier?

While dehumidifiers should blow warm air into the room, well, it is still not enough to warm the room alone. You still need to use a heater.

If the air in the room is already too cold, the little warmth in the air that the unit blows back into the room might not be enough to change anything.

Read our post on: Best dehumidifier for mould

Place your hand against the dehumidifier to feel the air coming out. If it is slightly warm, that’s okay. the most important thing is for the dehumidifier to do its job – to remove excess humidity from the air.

If you feel truly bothered by the dehumidifier not blowing hot air, check the few things that we have discussed in the past sections of this post.

Dimplex dehumidifier blowing cold air

image of dimplex dehumidifier blowing cold air

Dimplex is another UK-based company that makes dehumidifiers and other products. In their stable, you will find dehumidifier for drying laundry, reducing the level of humidity in your indoor air and doing much more.

Their line of dehumidifiers is called EverDri. Under this series, you will find a unit with a bucket capacity of as much as 20 liters. If live in a place like London, you know there is persistent humidity throughout the year.

After buying your Dimplex dehumidifier, you should find out whether it works out as it should. Some of the most common issues is the dehumidifier blowing cold air. If this happens, check that the compressor is working.

This is the one problem that can cause your unit to blow out cold air. To reiterate though, find out if the dehumidifier is doing its work. Is it lowering the level of humidity in the air? If yes, well, there is nothing to worry about.

Why is my dehumidifier blowing cold air: FAQ

Sometimes, it is as if appliances have their own mind. Therefore, you can truly never know enough about them.

In this FAQ section, we shed more light on why dehumidifier blows cold air:

Should my dehumidifier be blowing out cold air?

Dehumidifiers should blow out warm and dry air. All the same, they can cool a room because the dry air they pump back into the room feels colder than damper air. If you put your hand against the vents, you should feel warm air blowing out.

What temperature should the air be coming out of a dehumidifier?

The temperature of the air coming out of a dehumidifier should be about 70°F. Some of them can also do up to 90°F. If the air is not cold, there is nothing to worry about.

Why is my dehumidifier blowing cool air?

Check whether the appliance is set to defrost mode because then, it will only blow out cool air. When you disengage the defrost mode, the dehumidifier should start blowing warm air into the room. If it continues to blow cold air, something is wrong.

How do I stop my dehumidifier from blowing hot air?

If the unit is blowing hot rather than warm air into the room, it is mostly dirty and it needs cleaning up. Turn it off, wait for it to cool down and then clean it. That should resolve the problem.

Do dehumidifiers make the room warmer?

If a dehumidifier is set in a small room, it will make the air warmer. In a large room, there might not be a noticeable change in temperature. If you stand close to your unit, you will feel warm air coming from the vents.

What should I set my dehumidifier at?

The comfortable humidity level for your home is 30 to 55 percent. 40 to 60 percent is just okay but higher than that, say, 70 percent is too high.

Too high humidity can lead to allergy provocation and the growth of mold.

Best dehumidifiers that won’t blow cold air

If you are looking for a dehumidifier, you might want to try any of the three in this table, especially after looking at their features:

Dehumidifier

Features

Price

Gocheer Upgraded Dehumidifier

2000ml tank

Space rating of up to 480 sq. ft

Auto shut-off and red LED light when tank is full

Energy saving and low noise level

SEAVON Dehumidifiers

Low noise level and auto shut off

Mini dehumidifier for small rooms of up to 215 sq. ft

Starts working when humidity rises higher than 45%

Airplus Large Room Dehumidifier

Space rating of 1500 sq. ft

Comes with 52 inch drain hose

For basements and large rooms

30-pint tank size

Wrapping Up

That is it for the question of: why is my dehumidifier blowing cold air?

You have seen the three main causes of a dehumidifier that blows cold air. If yours does that, it means it is faulty. This appliance should always blow hot air into the room.

That is why you cannot use it as an air conditioner. A dehumidifier blowing warm air is just doing what it is supposed to do.

Mostly, the problem of humidifier blowing cold air and not collecting water comes with age. If it is old and the coils are not iced over, just buy a new one.

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