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Mold Prevention Gadgets: Do They Work and Do I Need Them?



Products and tools to help prevent mold growth in your home


Walking through the hardware store, you may have noticed an increase in the amount of devices that claim to prevent mold. Dehumidifiers, air filters, specialty vacuums, etc. – do they work as advertised? Do you really need the functions they provide? Before you invest your hard-earned money in these gadgets, take a minute to read about my experiences with these products.


Dehumidifiers for mold prevention

Dehumidifiers are a great tool for preventing mold growth. Mold grows when there is a water source, which could be a leak, a flood, or high humidity. Dehumidifiers do a great job of keeping the relative humidity in your home at a low enough level (below 50% is best) to deter mold growth. Be sure to have good ventilation in your home (and closets) for the dehumidifier to work best. You can also purchase an inexpensive hygrometer, an instrument used to measure relative humidity, at most hardware stores.


HEPA Air Purifiers

HEPA air purifiers often claim to trap 99% of dust, mold spores and pollen in the air. I have found this to be true, in my experience. These devices do a good job of filtering the air you breathe in your home, which can be invaluable to people with allergies. Drawbacks: a bit pricey (usually over $100) and they usually only cover the area of one or two rooms. If you decide to purchase one, make sure it has a HEPA filter. Only HEPA filters can trap mold spores.


HEPA Vacuums

There are some pretty fancy vacuums out there these days, and the expensive ones usually offer HEPA filtration. This means that they filter out the smallest dust, dander, mold spores, etc that are in your carpet, instead of just kicking them up into the air when they clean the bigger dirt particles. Like HEPA air purifiers, I find HEPA vacuums to work well. (If you are purchasing a vacuum and want to trap mold spores, make sure it has a HEPA filter for the same reasons you need a HEPA filter for your air purifier as described above.). In fact, I recommend anything using HEPA media when it comes to improving indoor air quality.


MoldTough Drywall

This is a relatively new drywall product out there that advertises itself as mold resistant. While it is definitely more mold resistant than plain drywall, it still doesn’t prevent water from getting behind the drywall and soaking the insulation and 2x4s, causing mold growth. I recommend using this product in kitchens and bathrooms, where you know there will be an extra amount of water present, but not throughout the whole house.


Smart Thermostats

Smart thermostats offer a valuable contribution to mold prevention in your home by effectively managing indoor humidity levels. These advanced devices can monitor and regulate the temperature and humidity, ensuring that your living spaces remain within the optimal range to discourage mold growth. By seamlessly integrating with your HVAC system, smart thermostats can adjust cooling and heating cycles based on real-time data, preventing excessive humidity that could foster mold development.


Additionally, some smart thermostats offer humidity monitoring and control features, allowing you to set specific humidity thresholds and receive alerts if levels become too high. This proactive approach not only maintains a comfortable and healthy living environment but also significantly reduces the risk of mold proliferation, safeguarding both your home's structural integrity and the well-being of its occupants.


The first three products can definitely help those of us with allergies. But if you don’t suffer from severe allergies, none of these products are really necessary if you keep your house clean and dry, with lots of ventilation and fresh air exchange. Dormant mold spores are everywhere in our environment – in the air we breathe and the carpet we walk on. These dormant spores are just waiting for a damp food source to germinate on. But if you ventilate your home well, stop leaks right away, and dry out flooding right away, you shouldn’t ever have to worry about a mold problem in your home.


Research can help determine which mold prevention tool is right for you and your home

Researching mold prevention is crucial to preserving the health and integrity of your living environment. Mold growth not only poses potential health risks, such as respiratory issues and allergies, but it can also lead to extensive property damage and costly remediation efforts.


By researching effective mold prevention strategies, you better identify potential risks and implement proactive measures to remove the mold. Informed research equips you with the tools to make informed decisions about proper ventilation, humidity control, maintenance routines, and the utilization of appropriate technology.


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