5 Important Questions to Answer When Getting a Basement Dehumidifier
Alexander BevanShare
Ready to unlock the full potential of your home? That extra space below your feet—your basement or cellar—is a treasure trove of possibility! But in the UK, that potential often comes with a damp, mouldy challenge. Protecting your investment is key, and that’s where the ultimate solution comes in: a powerful dehumidifier for basement and dehumidifier for cellar spaces!
Forget about damp air ruining your belongings or musty odours taking over. Investing in the right dehumidifier isn't just about protection—it's about transforming your basement into a clean, healthy, and usable part of your home. So how do you find your perfect moisture-fighting match?
Let's dive into the five key questions that will lead you to the ideal dehumidifier for your needs!
1. Do I Need a Dehumidifier for My Basement?
Even if you spot white mould in basement, it may not be a sign to immediately get a dehumidifier. First, determine whether your basement needs a dehumidifier by checking for persistent moisture issues.
Moisture in your basement may stem from;
● Water seeping through walls
● Dampness evident on concrete walls
● Damage to wooden surfaces and fabric on carpet or upholstery
● Condensation on the floor and walls
● Deteriorating joists, columns and headers
● Blistering or staining on walls
● Damp or humid air
These are clear signs that your basement has a moisture problem. Next, find the source of the moisture in your basement. This will determine if you need to employ a few moisture-prevention tricks or if you need to install a dehumidifier for basement to combat high humidity.
Since basements make up the bottom part of a house, they are most vulnerable to moisture. Here are the common inlets of water to your basement:
● Rainwater seeps through the ground and finds its way through crevices in basement walls.
● If your room above has cracks on the concrete floors, water can easily seep through and drip from the basement ceiling.
● Leaks from within the basement. They could be from damaged or deteriorated plumbing, a leaking faucet or a crack in the window ceiling.
● Defective gutters. If the gutters on your roof are damaged, they may not direct rainwater away properly. The dripping water accumulates in one spot and can find its way to your basement.
If the moisture problem is from the above sources, you need to get a plumber to fix them right away. As most homeowners have discovered, early detection and fixing of such issues can put an end to the moisture problem in their basements.

However, if you still have a moisture problem and none of the mentioned sources is the cause, then you are likely dealing with high humidity.
Signs of high humidity in the basement:
● Damp and sticky air.
● The cellar feels warmer than usual.
● White mould in basement floors, walls, and ceilings caused by condensation and dampness.
● A musty odour from mould and mildew.
● Foggy windows.
● Condensation on walls, floor and ceiling.
● Allergic whenever you spend time in the basement.
People living in highly humid places often experience the above signs often. If you notice these signs in your home as well, it is time to get a basement dehumidifier.
2. Are Basement Dehumidifiers Worth it?
A dehumidifier for cellar can assist in preventing mould and mildew issues caused by excessive moisture in the air. Dehumidifiers for basements facilitate easier breathing by lowering excess moisture and water damage inside the cellar. Additionally, dehumidifying aids in preventing the spread of dust mites, mould, and mildew throughout your basement. When humidity is regulated, mould and mildew cannot spread to wood, wood products, walls, ceiling tiles, or building materials stored in your basement.
3. What Size Dehumidifier for Basement?
Before buying the first dehumidifier you come across, it's important to consider crucial aspects of the product concerning your home. You need to determine;
● Size
● Dehumidifier type
● Efficiency
● Noise
● Portability
Dehumidifier size
When determining the size of the dehumidifier, one thing to consider is the square footage of your basement. In addition, check the tank capacity of the dehumidifier to ensure it will effectively control humidity for several hours. Another thing to check is if the product is compact enough to fit your cellar space without appearing too bulky.
Room space and tank capacity often go hand in hand. For instance, a 12L Portable Dehumidifier would benefit a cellar that is no more than 20㎡. A basement that is attached to an underground garage could benefit from it.
Dehumidifier type
Dehumidifiers are either desiccant or refrigerant models. Desiccant dehumidifiers work best in colder temperatures and would be perfect for a basement used as a cellar, a storage space, or a converted cold room.
Refrigerant dehumidifiers work best in warmer temperatures and are more efficient than desiccants. A refrigerant dehumidifier would be ideal for a basement converted into an extra bedroom or entertainment space.
Efficiency
Choose a dehumidifier for cellar that can run for hours without consuming a lot of electricity. For example, a portable 12L dehumidifier consuming only 185 watts per hour is more energy efficient than a central HVAC system that can consume 3500 watts. You can also leave the appliance running for hours before emptying the tank. Some portable dehumidifiers include a drainage hose, which is a plus.
To add to efficiency, choose a smart portable dehumidifier that lets you set its running time, sends alerts when to empty the tank, and regularly checks humidity levels in the basement while you are away.
Noise
Get a quiet dehumidifier if you'll be running it while enjoying a game or music in your basement. Aim for noise levels of 36dB and below, as this would be quiet enough even for a napping baby.
Portability
Get a basement dehumidifier that is lightweight and easily movable. You can place a portable dehumidifier in any spot in your basement where moisture is coming in. You can also use the unit as a garage dehumidifier or to reduce humidity in your loft.
4. Where to Place a Dehumidifier in a Basement?
Place your dehumidifier for cellar near the source of moisture in your basement. It could be near windows or doors letting in moist air from outside. You could also place dehumidifiers close to the entrance leading to the basement. When not using your basement, you can place the dehumidifier in the middle, where air circulation is more efficient.
5. At What Temperature Should You Run a Dehumidifier in the Basement?
The ideal operating temperature for refrigerant dehumidifiers is between 25℃ and 30℃. If the temperature drops below normal levels, adding a heater in the basement will ensure the dehumidifier runs efficiently.
Avoid over-exposing the refrigerant dehumidifier to cold temperatures. This can cause condensation to freeze on the cooling coils and cause a malfunction.
Transform Your Basement: Meet Your Moisture-Fighting Hero!
So, which dehumidifier is the perfect fit for YOUR basement? Get excited, because the perfect match is right here!
Figuring out the size you need is simple:
For compact basements (up to 18m²) or occasional dampness
Morris brilliant 12L models are your champions! Choose the super-quiet Morris 12L for powerful, no-fuss moisture removal, or step up to the Morris 12L with Wi-Fi to control your basement's climate from your couch—it's genius!
For larger basements (up to 30m²)
Got a larger, seriously damp space (up to 30m²)? You need a powerhouse! Our mighty 20L Dehumidifier is your ultimate hero, tackling larger areas with incredible efficiency and a huge tank, so you can relax and enjoy a fresher basement faster.

Authored by Alexander Bevan
As a seasoned expert in indoor climate solutions, this blog post writer focuses on helping homeowners and businesses reduce energy consumption. With years of experience, he provides practical, research-backed insights that empower readers to make informed choices, delivering trusted advice for their energy-saving strategies at Morris.
Conclusion
These five quick questions should guide you in determining the best dehumidifier for cellar in the UK!
Explore Morris' selection of top-rated dehumidifiers now and take the first step towards a healthier, drier basement today!
Find more tips on choosing a basement dehumidifier in our comprehensive guide, 13 Must-Know Answers Before Buying A Portable Small Dehumidifier.
Your Dehumidifier's Superpowers: Go Beyond the Basement!
Loved conquering your basement damp? That's just the beginning! Your dehumidifier is a superstar of home comfort, ready to tackle so much more. Discover all the other amazing ways it can make your life drier, healthier, and easier!
Unleash Your Dehumidifier's Full Potential:
● Conquer Hidden Damp: Learn how to banish mould from your wardrobe, clear condensation in your hallway, and protect your caravan or boat.
● Smart Home Hacks: Get pro tips on how to slash running costs and use our handy appliance running cost calculator to save money.
● Beyond the Basement: Explore its genius uses for drying laundry faster, creating a healthier bathroom, and making your kitchen and cold conservatory more comfortable all year round.
Ready to become a dehumidifier expert? Dive into our guides and unlock a world of fresh air!



