How to dehumidify a bathroom in 10 easy steps

Want to know how to dehumidify a bathroom? Home Health Living has compiled a list of 10 handy ways to cut moisture and dehumidify your bathroom, and we look at what causes condensation.

A relaxing hot bath at the end of the day is a great cure for everyday stress, but our bathroom habits could be doing more harm than good.

how to dehumidify a bathroom

How to dehumidify a bathroom in 10 easy steps

With a few easy steps you can reduce the moisture once you learn how to dehumidify a bathroom.

1. Open windows to let cool air in

Open the bathroom window after you have a bath/shower. If it isn’t too cold, leave a window open while you are in the shower. This lets the warm air out of your bathroom and the cool air in. If you don’t do this, the warm air hits the window and walls of the bathroom and turns into condensation which means, yep you guessed it, water in your bathroom.

2. Use the best dehumidifier for bathrooms

A dehumidifier works by drawing in moist air, removing the moisture, and then blowing out the dry air back into the room. The moisture is retained in the dehumidifier to be emptied. This is an effective way to reduce moisture in the bathroom. You can read our guide to the best dehumidifier for bathrooms.

Do I need a dehumidifier in my bathroom?

If your bathroom doesn’t have an exhaust fan and proper ventilation, it’s a good idea to use a dehumidifier. It doesn’t have to be a large dehumidifier- there are mini dehumidifiers perfect for bathrooms of all sizes.

The team at Home Health Living thinks the following models are the best dehumidifier for bathrooms:

Inofia 30 pint dehumidifier
Energy efficient
Humidistat control
Auto stop
Auto restart
24 hr timer
Adjustable fan
0.5 gallon tank
Drain hose incl.
Auto defrost
Quiet operation
Recessed handle
Compact size
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Yaufey 30 pint dehumidifier

Amazon's choice
Light touch control panel
24 hour operation
1.8 liter tank
Auto shut off
Drain hose incl
2 speed fan
Quiet operation
Washable filter
24 hour timer
12 month warranty
Lifetime support
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Vacplus 30 pint dehumidifier
1.3 liter tank
Auto shut off
2 drainage modes
Drain hose incl.
24 hr on/off timer
Energy efficient
Quiet operation
Adjustable fan
Drying clothes mode
2 year warranty
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Airplus 30 pint dehumidifier
1.5 liter water tank
Auto shut off
Four modes: Standard, drying clothes, sleep and raining
Universal wheels
Drain hose incl.
Washable filter
2 year warranty
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Honeywell TP30WKN 30 pint dehumidifier
Energy star qualified
Washable air filter
Filter clean alert
Drain hose incl
Humidistat control
24 hr on/off timer
Sleep mode
Auto restart
Check latest price
Midea 30 pint dehumidifier
1.6 gallon water tank
Auto restart
Quiet operation
Energy star certified
Washable filter
35 pint
Check latest price


Inofia 30 pint dehumidifier for bathroom

The Inofia 30 pint dehumidifier is an energy efficient dehumidifier suitable for spaces up to 1056 square feet such as your bathroom, basement, laundry or even RV!

It has a built-in humidistat that lets you select your desired humidity level and keeps track of the humidity. This saves you money because you won’t need to buy a separate digital hygrometer and the dehumidifier can operate only when the humidity in the room drops below the desired level.

It has an auto stop and auto restart function that switches the power on and off according to the desired humidity level- you don’t need to worry about watching the humidity and doing this yourself.

There is a 24 hour on/off timer as well so that you don’t need to remember to turn the humidifier on or off, again saving you time and hassle and also reducing your energy bills because your humidifier won’t be operating when it doesn’t need to.

The fan speed is also adjustable which is another power saving bonus!

The water tank holds up to 4 pints which is 0.5 gallons before it needs to be emptied manually, otherwise you can also use the included 6.56 foot drain hose for a self-draining by gravity option.

If you live in a cold climate, the dehumidifier has an auto defrost function to allow you to still use it.

The Inofia 30 pint dehumidifier has a recessed handle and is a compact size making it easy for storage and moving it around and for emptying the water tank manually.

If you’re planning on using the Inofia dehumidifier at night then you’ll be happy to know that it has a quiet operation so you won’t be disrupted by its operation while sleeping.

Features and advantages:

Energy efficient so you save money on your power bills

Auto stop and auto restart so you don’t need to keep stopping and starting it yourself

Quiet operation so you won’t get disturbed if using it at night

Auto defrost so it can be safely used in cold temperatures

Power outtage restart so you don’t need to worry if there’s been a power outtage

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Honeywell TP30WKN dehumidifier

Honeywell is one of the biggest brands in dehumidifiers so it was natural to choose the Honeywell TP30WKN dehumidifier as one of the best dehumidifier for bathroom.

It is energy star qualified which is great for you because you will save energy and money on lower power bills.

It has a washable air filter which prevents white dust from being dispersed, something that many other dehumidifiers have problems with. And there’s no need to replace the filter- simply hand wash it and then put it back inside the dehumidifier.

You will know when to clean the filter because there’s a filter clean alert on the dehumidifier.

The water tank is detachable making it easy for you to empty it when it is full. It holds up to 30 pints per day before needing to be emptied.

If you prefer the automatic method, there is a drain hose included with the dehumidifier so that it empties the water for you using gravity.

The Honeywell 30 pint dehumidifier has a 24 hour on/off timer which will save you energy and money and there’s an auto restart function in case of a power surge. This saves you worrying about switching it back on if there is a power surge- it will automatically happen!

Honeywell is a name you can trust when it comes to buying a dehumidifier for your bathroom!

Features and advantages:

Is energy star qualified so you will save on power costs

It has a washable air filter to reduce white dust without needing replacements

The drain hose will help empty the tank without you needing to

Auto restart in case of a power surge

Is it safe to use a dehumidifier in a bathroom?

Yes, it is safe to use a dehumidifier in a bathroom but care must be taken just like with any other electrical appliance.

Does the dehumidifier need to be on all the time?

No, a dehumidifier doesn’t need to be on all the time. The best time to use it is after a bath or shower, or if you live in a tropical environment and your bathroom gets damp easily. If you already use a dehumidifier in your home, then leaving your bathroom door open all the time might be enough to reduce moisture.

3. Switch on the exhaust fan while showering

If you have an exhaust fan, switch it on after your bath/shower.

Don’t have an exhaust fan? Check out this awesome exhaust fan with bluetooth speaker:

Broan Nutone SPK110 Sensonic Bathroom Exhaust Fan with Bluetooth Speaker

4. Use a heater

If you have heating in your home or even in the bathroom, or you have an electric towel rail, turn it on before using the bath/shower. By heating up the bathroom, the walls and mirror will be warmer, which will reduce the likelihood or amount of condensation.

We recommend the following best-selling heated towel rail:

Amba RWH-CB Radiant Hardwired Curved Towel Warmer, Brushed


5. Remove damp items

Remove any damp towels and mats from the bathroom and let them dry outside.

How do I stop damp in my bathroom?

By keeping your bathroom dry when not in use, you will stop damp and problems with dampness in your bathroom.

6. Double glaze windows to prevent condensation

Single glazed windows tend to be colder and so create more condensation. This can be reduced by double glazing your bathroom window.

7. Use a mirror defogger

Condensation on the bathroom mirror adds more moisture to the room. You can either wipe your mirror dry with a cloth, or you can purchase a mirror with a built-in defogger. This keeps the mirror warm and prevents condensation from occurring. If you can’t buy a new mirror with a built-in defogger, we recommend purchasing the defogger separately, such as this one:

Radimo MD16x24 Mirror Defogger, 16″ x 24″

Or check out this beautiful vanity mirror with LED lighting and defogger:

Hauschen home 32 x 24 inch Bathroom Vanity Mirror, LED Backlit+Wall Mounted + Defogger

8. Keep your bathroom dry

Wipe down any water on the floor, walls, vanity and shower with an old towel, to keep the room as dry as possible.

9. Time Your Showers

Think about giving up your long hot shower/bath. By reducing the time you spend in the shower, this will reduce condensation. You can use a shower timer like this cool waterproof shower time.

10. Filling Your Bath

When filling your bath, run the cold water first and then the hot water to reduce steam.

These easy steps will help you dehumidify your bathroom. By focusing your efforts on increasing ventilation, maintaining an adequate temperature and making a few adjustments to your bathroom habits, you will reduce the moisture levels in your bathroom and prevent the common problems associated with bathroom humidity and condensation.

Frequently asked questions about how to dehumidify a bathroom

Bathroom Humidity- what causes it?

Humidity in the bathroom is caused by condensation and can lead to various problems: promoting bacteria and mold growth, causing paint or wallpaper to peel and potential slippery hazards. The National Institute of Health has published information on damp and health problems.

The problem is worse for bathrooms without adequate ventilation, especially those without windows or fans. Bathroom mold and grime can be a pain in the neck to clean- not to mention a health hazard, being a common trigger for asthma and allergic reactions. It’s important to therefore dehumidify your bathroom to prevent these problems from occurring.

What Causes Condensation

Condensation occurs when warm, moist air (ie. steam) comes into contact with a cold surface, typically while the bath or shower is being used. The cold surfaces in a bathroom cause the warm air to condense into droplets of water. In a bathroom, typical cold surfaces include the window, walls, ceiling and mirror.

Why do my windows steam up on the inside?

This is because the steam in the bathroom hits the window. If your window is open then the steam is able to leave the bathroom and the cool air from outside will cool the bathroom down.

How do I reduce the humidity in my bathroom?

You can reduce the humidity in your bathroom by keeping it well-ventilated and dry, using natural methods or purchasing a bathroom dehumidifier.

Should you leave the bathroom door open after your shower?

Yes, leaving the bathroom door open after your shower will let any steam leave the room so it doesn’t cause condensation and will also help cool down the bathroom.


How to dehumidify a bathroom:

  1. Open windows to let steam out and cool air in
  2. Use a small bathroom dehumidifier
  3. Switch on the exhaust fan while showering
  4. Use a heater
  5. Remove damp items
  6. Double glaze windows
  7. Use a defogger
  8. Keep your bathroom dry
  9. Time your showers
  10. Fill your bath with cold water first then add hot water

And a bonus tip: Use the best bathroom plants that absorb moisture.

You can read more about dehumidifiers and looking after your bathroom here:

Best Dehumidifier For Bathroom Use 2020

Best dehumidifier 2020

Best 30 pint dehumidifier

Best 70 pint dehumidifier review

What does it cost to run a dehumidifier?

How to remove humidity without a dehumidifier?

Black Friday dehumidifier sale 2020

Best dehumidifier for garage use

Best dehumidifier for crawl spaces