Asthma and allergies

How do our products benefit people with asthma and allergies?

Controlling excess moisture and condensation

When you control excess moisture and condensation in the home, you significantly reduce two well-known asthma triggers:

Dust Mites and their droppings.

Because dust mites thrive in warm, moist places, one of the best ways to protect against this type of allergen is to make the home dry, so that mites cannot survive. But when you consider that showers, cooking and people can produce up to 12 litres of water per day for a typical household, it’s easy to see that it will take more than the occasional opening of a few windows to dry out a home. A DVS is the most effective way to reduce excess water vapour as it continuously pushes out the moisture-laden, stale air, replacing it with fresher, drier air.

Mould, mildew and airborne mould spores.

When condensation and dampness are present, fungal spore counts skyrocket. However, with a DVS at work controlling condensation and excess moisture in the home, the growth of mould and mildew can be halted, and the amount of airborne mould spores greatly reduced as a result.

Filtering air that comes into the home from outside (via the roof space)

This significantly reduces the occupants’ exposure to dust, pollen, plant spores and other inhaled triggers. While such allergens will always be present in fresh, outside air, the DVS uses high quality, internationally rated filters to filter these from the air before it comes into the home.

Therefore, people who are allergic to such triggers can choose to stay inside their DVS-ventilated homes (with windows and external doors closed) significantly reducing their exposure and, subsequently, their symptoms. DVS also offer a Summer Ventilation option which allows cooler, fresher, filtered air (taken from outside, not the roof space) to be circulated through the home both day and night, enabling windows to be kept shut and allergens out.

Pushing out airborne irritants that originate inside the home

This includes tobacco smoke, wood fire smoke, perfumes, paint, common household cleaners, pet dander, formaldehyde from furniture, carpet and building materials, and other chemicals and gases. Ventilating the home with a DVS system ensures that any contaminated air inside the home is continually pushed out (around 16 air changes every 24 hours), and replaced by drier, fresher, filtered air instead.

Finally, some people with asthma find that cold air can trigger an episode of asthma. While the DVS is not a heating system, it can supplement existing home heating by capturing free, solar-heated warm air from the home’s roof space on sunny days.

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