Have you ever walked into your home, basement, or spare room and been greeted by an unpleasant, damp, musty smell? Many of our customers ask if dehumidifiers help with musty smells and eliminate them completely.
At Dehumidifier Rental, we understand how frustrating and embarrassing lingering musty odours can be. Here is your practical guide to will a dehumidifier help with musty smell, what causes these odours, and how to tackle them effectively.
What Causes Musty Smells Indoors?
Musty smells are most commonly caused by:
- Excess moisture in the air: High humidity allows mould and mildew to thrive
- Mould and mildew growth: Especially on walls, ceilings, under carpets, or behind furniture
- Poor ventilation: Air becomes stale and odours become trapped
- Water leaks or flooding: Even after visible water is removed, damp materials continue to emit odours
Will a Dehumidifier Help with Musty Smell?
The short answer is yes, a dehumidifier can help with musty smells, particularly when caused by excess moisture and mild mould growth. Here is how:
- They remove moisture from the air, reducing dampness that feeds mould and mildew
- They stop further mould growth, as these organisms need moisture to survive
- They improve ventilation by keeping air moving and drier
- And they help dry-out damp materials, like carpets or furniture affected by humidity
However, if the smell is caused by severe mould infestation, professional cleaning alongside dehumidification may be necessary.
Will a dehumidifier help with mould?
How Does a Dehumidifier Remove Musty Odours?
A dehumidifier works by:
- Drawing in humid air and cooling it to condense the moisture out
- Collecting this water in a tank or draining it away
- Releasing drier air back into the room, lowering overall humidity levels
Lower humidity starves mould and mildew of the moisture they need, stopping odour production at the source. Over time, as surfaces dry out, the musty smell fades.
What is Relative Humidity (RH)?
When a Dehumidifier Might Not Resolve Musty Smells Fully
There are situations where a dehumidifier alone may not completely remove odours:
- Severe mould infestations: These require specialist removal, as spores embed in surfaces
- Hidden leaks: If plumbing leaks continue, odours will persist despite dehumidification
- Rotting materials: Water-damaged carpets, underlay, or plasterboard may need replacement
Always investigate the cause of musty smells fully to ensure there are no underlying structural issues.Read also:
Condensation – Why have I got it & What can I do?
Additional Tips to Eliminate Musty Smells
- Identify and fix leaks quickly, including roof, guttering, and plumbing leaks
- Improve ventilation, open windows daily when possible
- Clean affected surfaces with mould remover, ensuring proper PPE is used
- Use air purifiers alongside dehumidifiers, for enhanced air freshness
- Remove or replace heavily damaged materials, such as soaked underlay or rotting wood
Conclusion
So, will a dehumidifier help with musty smell? Yes, in most cases it will significantly reduce or eliminate odours by removing the excess moisture that causes them. For persistent smells, it should be used alongside cleaning and repairing the source of dampness.
At Dehumidifier Rental, we provide high-capacity dehumidifiers for homes, basements, and commercial spaces to remove damp and odours effectively. Contact us today for expert advice on choosing the right dehumidifier to keep your property fresh and healthy.
FAQs
Will a dehumidifier get rid of damp smells?
Yes, by reducing humidity, it removes the moisture that causes damp odours.
How long does it take for a dehumidifier to remove musty smell?
It can take a few days to a week, depending on severity and moisture levels.
Do I need to clean mould before using a dehumidifier?
Yes, cleaning visible mould is important to remove spores and prevent health risks.
Can a dehumidifier remove smells from carpets?
It helps dry them out, reducing odours, but deep cleaning may be needed for strong smells.
What humidity level prevents musty smells?
Keep indoor humidity between 45-55 percent to prevent mould and damp odours.
