Is hot air coming out of your dehumidifier? That isn’t always a terrible thing.

Since a dehumidifier reheats the air after dehumidifying it, blowing hot air from one is totally natural.

However, there can be a problem if your dehumidifier is producing air that is too hot.

I’ll explain what to do in this post if your dehumidifier is spewing air that is much too hot.

I’ll also go over the ideal temperature for the air flowing from your dehumidifier and the reasons hot air is blown by dehumidifiers.

How To Avoid The Hot Air Coming Out Of Your Dehumidifier

You may attempt the following to get your dehumidifier to stop spewing hot air:

Step 1: Clear The Air Filter In Your Dehumidifier.

Your dehumidifier will release hot air if the air filter is unclean.

What causes it to occur?

It’s because your dehumidifier’s airflow has decreased.

Basically, your dehumidifier will have trouble blowing air because of the dust and grime on a filthy air filter.

Your dehumidifier will have a tougher time operating effectively because of the decreased airflow.

Your dehumidifier may start to blast hot air as a result of the reduced airflow.

You must clean the air filter on the dehumidifier to stop the hot air from blowing out.

About cleaning a dehumidifier and its filter, see this other post I wrote.

Step 2: Your Dehumidifier’s Evaporator Coil Should Be Cleaned.

The effectiveness of your dehumidifier will be improved by cleaning the evaporator coil.

Your dehumidifier will work better if the evaporator coil is clean if it is blowing hot air.

You must dismantle your dehumidifier in order to reach the evaporator coil for cleaning.

You must clear the coil of extra dust after you have gained access to it.

If the evaporator coil of your dehumidifier is too grimy, clean it using a coil cleaning spray.

Step 3: Defrost The Dehumidifier.

Your dehumidifier could release an excessive amount of hot air if it’s frozen.

If you want your dehumidifier to operate correctly, it must be completely defrosted.

There is always a potential that the coil of your dehumidifier may develop ice.

especially if your filter is filthy or your room is chilly.

You must defrost your dehumidifier if it has frozen.

Put your dehumidifier in fan-only mode to help it defrost.

In the dehumidifier’s fan-only mode, the compressor will be off.

Your dehumidifier won’t become chilly if the compressor isn’t working.

This enables the de-icing of the evaporator coil.

Remember that the thawing out process for your dehumidifier might take anything from a few minutes to a few hours.

Depending on how much ice is wrapped around its coil.

Check read my post below for additional details on defrosting your dehumidifier:

Why Is The Hot Air Coming From My Dehumidifier?

Dehumidifiers with compressors blow hot air even when they are working correctly.

This is because a little quantity of heat is generated as a byproduct of the dehumidification process by compressor dehumidifiers.

Compressor dehumidifiers always expel air that is hotter than the air in your room because of this.

How can you tell whether you have a dehumidifier with a compressor?

A compressor dehumidifier is most likely what you have if it is portable.

The most prevalent kind of dehumidifier in American households is a compressor unit.

In the US, mechanical (compressor) dehumidifiers make up around 84.5 percent of portable dehumidifiers used in homes.

A portable compressor dehumidifier often blows air that is 3 to 5 degrees warmer than the air in your room.

Only if your dehumidifier is spewing air that is too hot should you be concerned.

Here are a few causes of hot air blowing from a dehumidifier:

The Evaporator Coil Of The Dehumidifier is Filthy.

Your dehumidifier may spew out hotter air than usual when the evaporator coil on it becomes unclean.

What causes it to occur?

It’s crucial to first comprehend how dehumidifiers take moisture out of the air.

Warm air has a greater capacity to store moisture than cold air.

By chilling the air below its dew point, dehumidifiers remove moisture from the air.

The dehumidifier essentially cools the air to around 50°F.

Moisture condenses out of the air because cold air can’t contain all of the moisture.

The moisture drops into a tank used for collecting.

The air then travels through a hot condenser coil after being cooled and having its moisture removed.

The air reheats up to a little bit over room temperature as it travels through the condenser coil.

The dehumidifier won’t be able to chill the air down as much if the evaporator coil is unclean.

The air then reheats to a considerably greater temperature than it would usually when it passes through the condenser coil.

I advise cleaning the evaporator coil if your dehumidifier is spewing hot air as a result of a filthy coil.

I wrote an article on how to clean a dehumidifier, and it includes instructions on how to clean the coils of your dehumidifier.

Your Room’s Air Is Too Warm.

Your dehumidifier will blast out hot air if the temperature in your room is too high.

The air that compressor dehumidifiers constantly expel is a little hotter than the air in your room.

Your room will always become a little warm from the dehumidifier.

This is a pleasant effect during the chilly winter months.

However, you definitely don’t want to heat the air in your house during the sweltering summer months.

Consider utilizing an air conditioner in the summer if you need to dehumidify your house.

Why does a dehumidifier always make your room’s air warmer? The refrigeration cycle is to blame.

The operation of a compressor dehumidifier is identical to that of a portable air conditioner.

The key distinction is that a portable air conditioner blows air from your room out your window in order to reject heat from its condenser.

By forcing the cool air from the evaporator directly into the condenser, the dehumidifier rejects heat from its condenser.

The end result is that a dehumidifier produces air that is somewhat hotter than the air it draws in.

The Compressor Of The Dehumidifier Has A Problem.

Your dehumidifier may spew hot air if the compressor is malfunctioning.

The component of the dehumidifier that drives its heat exchange cycle is its compressor.

To help with heat transmission, the compressor forces refrigerant through the evaporator and condenser while it operates.

The compressor may have a problem or there may be a refrigerant imbalance, which will prevent the dehumidifier from operating correctly.

Your dehumidifier can start spewing hot air as a consequence.

What causes a compressor problem? Numerous possibilities exist.

A leak in the refrigerant line is among the most frequent ones.

The dehumidifier’s working pressures and temperatures will be all out of wack if refrigerant leaks out of it.

How can a dehumidifier with a compressor or refrigerant problem be fixed? Unfortunately, a faulty compressor or leaking refrigerant cannot be fixed quickly.

The best course of action is to have an HVAC expert have a look at it.

If your dehumidifier is a tiny one, it may be preferable to simply get a new one.

Dehumidifier With Desiccant Is Blowing Hot Air

It’s crucial to keep in mind that only dehumidifiers with a compressor emit hot air.

The internal motors of desiccant dehumidifiers only generate minuscule quantities of heat.

Desiccant dehumidifiers don’t create much heat, so you won’t ever notice it.

Under no circumstances can a desiccant dehumidifier blow hot air.

Your desiccant dehumidifier isn’t working if it’s spewing hot air.

What Temperature Should The Air That Your Dehumidifier Is Producing Be?

Your compressor dehumidifier’s exhaust air should be a few degrees warmer than the air inside your room.

Your dehumidifier’s type and the temperature of the air in your room will determine the precise air temperature that it produces.

The air leaving your compressor dehumidifier will typically be 3-5°F warmer than the air within your room on average.

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Written by Bob Matsuoka
Bob Matsuoka is a blogger and founder of RVing Beginner blog. He has been blogging for over five years, writing about his own family’s RV adventures, tips for people who are interested in buying an RV or taking their family on an adventure by RV.