Certain rooms in the home are more likely to suffer from mold than others – places that are frequently subject to high humidity levels and fluctuating temperatures. Bathrooms are an obvious one, but mold can also be a problem Utility room.
Utility rooms are hard-working spaces and we expect a lot from them – it could be where you do your laundry and hang wet clothes to dry, or maybe your room doubles as a dog washing station or simply a place where you leave smelly, wet sports clothes before you go round to deal with them. All of these activities create moisture—and moisture, when left to do its job, can lead to mold.
Whether you’ve noticed some troubling signs of mold in your utility room or are keen to avoid it appearing in the first place, our expert-led guide gives you all the advice you need to keep the space fresh, clean and airy.
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Why does mold appear in utility rooms?
In order to prevent dealing with Mold removal In the first place, it is useful to understand why it appears.
“That’s mainly because you often have a lot of moisture generated in a small space,” explains Michael Zohoury, founder of Pyramid Eco. “Washing machines, tumble dryers and sinks all release moisture. If that moisture is not removed, it condenses on cold surfaces. These rooms are usually located on exterior walls and in extensions, so Insulation Not always as good as the rest of the household. That means the wall temperature can stay low, and when the warm moist air hits it you get condensation. Once that cycle starts happening regularly, the mold will follow.”
Sam Carter, Radiator Specialist Devices DirectThe utility offers some additional advice on the cause of mold in the room. “Utility rooms often lack the consistent heat of a living room, but face ten times the humidity. Without an escape route, that moisture settles on cool walls or behind closets or appliances where airflow is stagnant—mold thrives in damp conditions.”
So now you know the reason, but what can you do to prevent it? Here are Sam and Michael’s top tips.
Michael Zohoury is the founder of Pyramid Eco, bringing over a decade of experience to the company. His expertise spans energy-efficient retrofitting projects, including insulation, solar and heat pump installations.
With over four years of experience in eCommerce, Sam is responsible for the HVAC and Heating category customer journey at Carter Appliances Direct. He specializes in translating complex data—from radiator BTU output to dehumidifier extraction rates—into expert advice that helps customers buy with confidence.
1. Invest in a dehumidifier
Dehumidifiers come in handy for all types of rooms, removing excess moisture from the air and keeping the humidity level nice and steady.
“When it comes to tackling utility room humidity, a dehumidifier isn’t just a helpful gadget – it’s arguably one of the most effective pieces of equipment you can invest in,” says Sam Carter. “A dehumidifier physically removes water from the air, getting to the very root of the problem.
“Where The best dehumidifier What really shines is their ‘Laundry Mode’, a high fan setting designed specifically to speed up the drying process of horse clothes. Instead of letting moisture hang heavy in the air for hours (which would seep through the walls and make the room feel clammy), dehumidifiers actively remove it from the environment,” Sam continues. “This spreads more dry air over your wet clothes to speed things up.
“There’s also a nice financial upside to this, viz Dehumidifier running costs It can be three times cheaper than a tumble dryer when used on laundry mode,” continues Sam. “This saves money on your energy bill and is a lot easier on your fabrics. It’s one of those rare upgrades that tackles the symptom (moist air) and the cause (laundry drying) at the same time, making it a true heavyweight champion of utility room ventilation.”
Buy dehumidifiers
12L/day dehumidifier for home
This well-priced dehumidifier can remove 12 liters of moisture per day and is suitable for rooms up to 15m2. It also has a laundry drying mode, a 24-hour timer and an alarm when the tank is full.
HOMCOM 20L/Day Portable Quiet Dehumidifier
With two speed settings, a laundry drying mode and the ability to remove up to 20 liters of moisture a day, this dehumidifier is suitable for spaces up to 20m2 yet is quiet to operate – 38dB in fact.
Blyss 16l/d Dehumidifier WDH-316DB
Set on a smooth-rolling castor that makes it easy to move around, this neat little dehumidifier can remove up to 16 liters of moisture per day as well as help dry laundry and has two speed settings.
2. Keep the space at a constant temperature
Inconsistent temperatures are not only uncomfortable to live in, but can lead to a range of more serious problems – including mold.
“Yours Utility room heating Plays a much more important role than keeping the room comfortable; It’s actually the first line of defense against damp by strategically managing the temperature of your walls,” explains Sam Carter. “Every surface has a ‘dew point’, the temperature at which air can no longer hold water vapor and it turns into a liquid. When the warm, moisture-laden air from your washing machine or drying laundry hits a freezing-cold wall, this is what happens—instantly. Condensation Forms and molds follow directly after.
“A radiator or other heating source can keep the actual temperature of the wall surface above the critical dew point, preventing the conditions that allow damp to take hold in the first place,” Sam continues. “The trick is consistency rather than intensity. If you blast the radiator on high for an hour, it makes the air feel toasty, but really, it does very little to warm the thermal mass of the cold outer wall. If the wall stays cool while the air warms, you’ve actually created a perfect storm for condensation.
“It’s more effective to keep the radiator on a low, steady setting,” advises Sam. “Thermostatic radiator valve Or smart valves come into their own here because they instantly maintain that background warmth, ensuring the room never goes into the danger zone.”
3. Address your ventilation methods
This Ventilation of the house The methods you use in your home are key to keeping it feeling fresh and clean, so if you haven’t given much thought to how you ventilate your utility room, now is the time.
“The key is to control moisture at the source and remove it quickly. In most cases that means proper mechanical extraction rather than relying on windows alone,” likes Michael Zohouri. “A humidity-controlled extractor fan is the best solution for most homes. It runs automatically when humidity levels rise.
“In most cases, a properly sized extractor fan is the most reliable way to control humidity in a utility space,” continues Michael. “The important thing is that the fan is matched to the size of the room and the amount of humidity produced. Best bathroom extractor fans If they are very small and you have a washing machine and dryer running regularly, it is not enough.
“The ducting also needs to be installed properly,” adds Michael. “Long runs from cold loft spaces should be insulated to prevent condensation inside the ducts, and the outlet should be properly sealed to prevent cold air from returning or your extractor fan can cool the room.”
4. Check for cold spots on the walls
and finally, Cold spots on the walls And drafts are more than just annoying—they can also lead to mold if not checked and acted upon quickly.
“It’s also worth checking small gaps around pipework or in external walls, as these can create cold spots,” says Michael Zohoury. “And avoid packing the room too tightly. If there’s no air circulation around appliances and cupboards, those areas stay damp longer.”
Check the insulation in the room walls – poor insulation can lead to these cold spots, and Draft proof window And the doors too.
FAQs
Do you need to have a window in the utility room?
This is a common question, but it’s interesting to note that you don’t actually need to have a window in a utility room because it’s not classified as a habitable space. That said, if you can incorporate one into your design, it will help quite a bit when it comes to the battle against mold.
“A window helps, but it’s usually not enough,” points out Michael Zohouri. “In winter people tend to keep windows closed so that ventilation disappears when it is most needed.
“In hard utility rooms I would always recommend mechanical extraction as well. You need something that continuously removes moisture. Well Mechanical extraction in utility room makes the biggest difference.”
It is important for you to think a lot Utility room ideas – Practical spaces don’t have to be boring. You’ll likely spend a lot of your time here doing day-to-day tasks so it makes sense to get your design spot-on.
