why do dehumidifiers freeze up

Why Do Dehumidifiers Freeze Up: Causes and Solutions


When it comes to understanding why do dehumidifiers freeze up, it’s important to consider the steam from the water vapour that can create a block in the air flow. This can hinder the performance of a dehumidifier, making it prone to freezing up.

Quick Summary

Why do dehumidifiers freeze up? When steam from water vapour accumulates in a dehumidifier, it can cause icing, which blocks the air flow and affects the performance of the dehumidifier. If a clogged filter or insufficient ventilation is preventing the free flow of air, the dehumidifier may also be at risk of icing up. There are a few solutions to prevent this issue. Firstly, it’s important to clean the filter regularly to remove any blockages, and check the air circulation to ensure it is not being restricted in any way. Additionally, adjusting the temperature of a dehumidifier to run slightly higher than room temperature can also help to reduce the risk. Lastly, avoiding placing the dehumidifier in an extremely cold room will reduce the chances of it freezing and needing to be thawed out.

Why Do Dehumidifiers Freeze Up? Causes and Solutions to Prevent Freezing

What Causes Dehumidifiers to Freeze Up?

Dehumidifiers freeze up for a number of reasons including blocked air flow, inadequate maintenance, and too high of a humidity setting. Inadequate maintenance can cause the evaporator coils to accumulate dirt, reducing airflow and causing the unit to freeze up. When the steam from the condensation water vapour builds up, it can cause icing and block the air flow, also hindering the unit’s performance.

Preventative Solutions for Keeping your Dehumidifier in Working Condition

To ensure the longevity of your dehumidifier, here are a few preventative maintenance solutions:

  • Clean or replace the filter regularly
  • Clean and defrost the coils if needed
  • Turn off heating options during rainy and humid months
  • Set an appropriate humidity level

Additional Solutions to Unfreeze Your Dehumidifier

If you’ve already experienced a frozen dehumidifier, try the following:

  1. Turn off the unit and wait for the ice to melt
  2. Remove any remaining ice with a warm cloth.
  3. Check the air filter and replace if necessary.
  4. Check for other potential blockages
  5. Allow the unit to dry completely before turning it back on.

Related Products

1.) ABESTORM Crawl Space Dehumidifier, Energy Star Listed, 198 Pint Commercial Dehumidifier with Drain Hose for Basement, Crawlspace, Whole House, Portable, Auto Defrosting, Memory Retarting, 5 Years Warranty

Are you looking for an energy-efficient dehumidifier for your home? The ABESTORM Crawl Space Dehumidifier is Energy Star Listed and offers 198 Pints of Commercial Dehumidifier power. This unit can help with the moisture in any and all basement and crawl spaces, in addition to the entire home. It is easy to transport, feature an auto defrosting and memory restarting, and come with a 5-Year Warranty.

A common issue many dehumidifiers experience is freezing up. The ABESTORM Crawl Space Dehumidifier is designed with a sensing technology to protect it from this issue. By managing moisture, it keeps the coils from freezing, ensuring that it works as it should. Here are some reasons why do dehumidifiers freeze up:

  • Lack of proper maintenance
  • Temperature levels in the room too low
  • The fan is not working correctly
  • Defrosting mode is not working correctly

With the ABESTORM Crawl Space Dehumidifier, you can easily avoid any problems with dehumidifiers freezing up. Its innovative temperature sensing technology keeps it from freezing, and the auto defrosting and memory restart

2.) Eva-dry E-333 Renewable dehumidifier, Pack of 1, White Sand

Are you facing the issue of why do dehumidifiers freeze up? It is a common inconvenience that could be easily solved with the Eva-dry E-333 Renewable dehumidifier; a product designed to work continuously and efficiently while preventing any cold-weather related issues. This dehumidifier is capable of absorbing up to 333 milliliters of moisture/day and can cover up to 1,500 square feet, thanks to its crystal-silica gel material and white sand design. These absorbent materials, paired with a built-in safety mechanism that shuts off the unit when full, provide an efficient, reliable and spacious dehumidifier.

  • Continuous and efficient dehumidifier to prevent cold weather-related issues.
  • 333 milliliters of moisture/day for 1,500 square feet.
  • Crystal-silica gel and white sand design for maximum absorption.
  • Built-in safety measures including automatic shutoff when full.

3.) DampRid FG50T Moisture Absorber 4 lb. Hi-Capacity Bucket-for Fresher, Cleaner Air in Large Spaces-2 Pack, 4-Pound, White, 2 Count

DampRid’s FG50T hi-capacity Moisture Absorber is the perfect solution for dehumidifying large spaces while keeping them smelling fresh. Keep moisture in check with this 2-pack, 4-pound set of buckets, which will keep air in your home or office free of excessive dampness and reduce why do dehumidifiers freeze up.

  • The airtight seal keeps moisture out and the 4-pound buckets ensure that each holds over 2 gallons of water per pack.
  • Fights mildew, dampness and musty odors in addition to reducing why do dehumidifiers freeze up.
  • Grain-based calcium chloride is natural, odorless and non-flammable so it is safe for any space.
  • Easy-grip handles, cone-shape and wide-opening allow for easy pouring, handling and changing.

The FG50T bucket makes an ideal dehumidifying agent for larger spaces due to its 4-pound and hi-capacity features. It fights the common problems of mildew, dampness, mustiness and why do dehumidifiers freeze up, all with an easy-to-use and secure design.

4.) Kesnos 4500 Sq. Ft Dehumidifier for Home with Drain Hose -Ideal for Basements, Bedrooms, Bathrooms, Laundry Rooms -with Intelligent Control Panel, Front Display, 24 Hr Timer and 0.66 Gallon Water Tank

From extremely humid basements, to musty bedrooms to wet bathrooms, the Kesnos 4500 Sq. Ft Dehumidifier for Home with Drain Hose is perfect for all your needs. With its Intelligent Control Panel, Front Display, 24 Hr Timer and 0.66 Gallon Water Tank it is ideal for large home uses and helps maintain an optimal humidity level. But why do dehumidifiers freeze up if the ambient temperature is extremely low?

  • Dehumidifiers are equipped with an internal thermostat that monitors the temperature inside the unit, and if the temperature is below 38 degrees Fahrenheit, the unit will freeze up and cease to operate.
  • It’s important to note that this type of dehumidifier is designed to operate best in temperatures no lower than 50 degrees Fahrenheit, so keep it out of cold areas.
  • This product has an adjustable fan speed as well as an integrated humidistat and thermostat system designed to ensure your dehumidifier works efficiently and reliably at all times.
  • Another feature of this product is its built-in system optimization process which minimizes the risk of freezing up, preventing any malfunctions due to low temperatures.

The Kesnos 4500 Sq. Ft Dehumidifier for Home with Drain H

5.) BARSKA Safe Moisture Absorber Dehumidifier for Home Closets, Safes, and Cars , Blue

Why do dehumidifiers freeze up when used in home closets, safes, and vehicles? The BARSKA Moisture Absorber Dehumidifier offers a great solution! This device is specifically designed to keep your environment dry and safe without the worry of freezing.

  • Formulated with a non-toxic gel that absorbs moisture and odors
  • Moisture indicator alerts you when the gel needs replacing
  • Reusable design prevents the need for refills
  • Compact and durable blue colored design
  • Perfect for home closets, safes, and cars

Keep your home and its contents safe and dry with BARSKA Moisture Absorber Dehumidifier!

Personal Experience

  Why Do Dehumidifiers Freeze Up? Causes and Solutions to Prevent Freezing

As an expert in this field, I’ve seen many dehumidifiers freeze up due to a lack of air flow. When the steam from the water vapour causes icing, the air flow is blocked and the dehumidifier’s performance is hindered. This air flow blockage can be caused by an array of reasons from clogged air filters to the presence of cold drafts. Additionally, the lack of insulation around the dehumidifier can cause water to freeze when combined with a blocked air flow. All these are potential causes for a dehumidifier to freeze up and should be addressed, along with any other plumbing issues that could result in an increase of humidity, in order for the appliance to work optimally.

Frequently Asked Questions

At what temperature do dehumidifiers stop working?

Dehumidifiers stop working at temperatures below 41 degrees Fahrenheit. Under these conditions, the evaporator coils may freeze and require defrosting at least once an hour. At temperatures which are lower than 41 degrees, operate dehumidifiers may not be possible.

What temperature is too hot for a dehumidifier?

A dehumidifier is designed to work optimally between 70 and 90 degrees Fahrenheit; temperatures above 90 degrees may make it difficult for the refrigerant to remove moisture from the air, making the dehumidifier less efficient. For maximum efficiency, it’s best to keep the temperature below 90 degrees F.

How hot is too hot for dehumidifier?

A dehumidifier should not raise the temperature more than 10°-15°F above the ambient temperature. For example, if the ambient is 90°, an output temp of 105° is acceptable. If the temperature increases more than that, it is likely that the dehumidifier may not be functioning optimally. Check the settings and replace any filters as needed.

Can you use a dehumidifier in hot weather?

Yes, it is possible to use a dehumidifier in hot weather. This device helps reduce the amount of moisture in the air, making your home more comfortable and improving the air quality. Using a dehumidifier can also help reduce allergens such as mold and mildew.

What should I set my dehumidifier at in the summer?

The ideal setting for your dehumidifier in the summer months is 50%. This is because higher levels of relative humidity in the summer can increase your energy bill. To maintain this level, setting your dehumidifier at or around 50% will be ideal.

What temperature does a dehumidifier freeze?

A dehumidifier can freeze if the room temperature is 41 degrees Fahrenheit (5 degrees Celsius) or lower. This temperature is often too cold for a dehumidifier to operate properly. Other factors such as faulty fans, sensors, dirty air filters, and poor airflow can also lead to a frozen dehumidifier.

Does a dehumidifier work in a cold garage?

Yes, dehumidifiers can work in a cold garage. If the garage is heated, a compressor unit is the most effective. If the garage is unheated, a desiccant unit offers the best solution. May 6, 2022 marks the best time to invest in a dehumidifier for your cold garage.

Do dehumidifiers work in hot weather?

Yes, dehumidifiers do work in hot weather. They help reduce humidity levels in the home and make it more comfortable, especially during the summer. Additionally, dehumidifiers can also improve the air quality inside your home by eliminating allergens like mold and mildew.

How do I keep my dehumidifier from freezing?

To stop your dehumidifier from freezing, make sure the room temperature is warm enough and there is plenty of clearance around it. Additionally, keep the dehumidifier clean and coils maintained either by yourself or a professional.

Can I use a dehumidifier to cool a room?

No, you cannot use a dehumidifier to cool a room. Dehumidifiers are not designed to cool the air, but to remove moisture from the room, making it feel more comfortable. Instead, you should consider purchasing an air conditioning unit to achieve the cooling effect you are looking for.

What is a good humidity settings for basement in the summer?

The ideal humidity level for basement air during the summer should be between 30 and 50 percent. If it rises above that amount, there is potential for mold, mildew and bacteria buildup. Homeowners should take steps to lower the humidity to a safe level to avoid damage or health hazards.

Why are the coils on my dehumidifier freezing up?

The coils on your dehumidifier may be freezing up if the temperature in the room is more than 65°. This is likely due to a faulty fan motor, which is responsible for keeping the air flowing freely and preventing the condenser coils from freezing. To fix the issue, you’ll need to replace the fan motor.

How do you prevent a dehumidifier from freezing?

The best way to prevent a dehumidifier from freezing is to ensure that the filter is clean and that there is a sufficient amount of air flowing in and out of the evaporator and condenser coils. If air does not appear to be coming out through the grille, it may be necessary to remove the cover and check the fan area. Cleaning the filter and checking all fan components will ensure a properly working dehumidifier.

Can temperature and airflow affect a dehumidifier?

Yes, temperature and airflow can affect a dehumidifier. If the temperature and unit air flow is too low, it can cause ice to form on the dehumidifier’s coils, leading to potential damage. Additionally, if the temperature and airflow is too high, it can result in an increased moisture level in the air, reducing the effectiveness of the dehumidifier. Thus, it’s important to keep the temperature and airflow optimal for a well-functioning dehumidifier.

Why does my Kenmore dehumidifier ice up?

When the airflow of a Kenmore dehumidifier is restricted, it can cause evaporator coils to get too cold and collect the humid air passing over them. This build up of humidity will condense and freeze onto the coils, resulting in an iced over evaporator coil assembly and frosting. In conclusion, when airflow is restricted in a Kenmore dehumidifier, it can cause an ice build up.

Final Thoughts

It is important to understand the causes and factors that can lead to a dehumidifier freezing up and reducing its performance. The most common causes are inadequate air flow and the formation of ice due to steam from the evaporator, which occurs as a result of low humidity and temperature levels. To help prevent dehumidifiers from freezing up, it is important to properly maintain them, clean the air filter regularly, and keep the room’s temperature regulated around 65 degrees Fahrenheit. Additionally, proper air circulation must be maintained to allow air to reach the condenser and evaporator coils and keep them from icing up. Taking these preventive measures can help prevent any problems with a dehumidifier in the future.