Wednesday 20 August 2008

Air Purifiers and Allergens

Air Purifiers and Allergens
There are a multitude of websites who are only too willing to sell the desperate Allergy sufferer an Air Purifier which will supposedly 'remove over 99%' of airborne allergens including the above mentioned mould spores.

On the face of it you can see how such a sweeping statement can seem like the answer to all of an allergy sufferers prayers. And of course with units costing as little as £40.00 you can see why it is a popular avenue to take. However care needs to be taken when choosing as things are not always as cut and dried as they seem.

One of the most popular types of air purifiers are called 'Hepa' ( High Efficiency Particulate Air Filter' ), These units usually claim to remove over 99% of airborne allergens etc. However this does not necessarily guarantee that the unit you purchase will actually give you this kind of performance.

You see, it is not the air purifier as a whole which guarantees 99% efficiency , it is only the HEPA filter itself inside the machine which has been stringently tested to ensure that it catches 99% of the air passing through it.

The point made here is that once the actual filter has been fitted into the machine and then switched on, how do you know how much of the air going through the machine is actually passing through the Hepa Filter itself? Air will always take the path of least resistance - and that means if dirty air can find a way around the filter it will.

The biggest difference between top of the range Hepa Air Purifiers like the Blueair 402 and a less expensive model like the Prem-I-Air PJ152 is the quality of the casing, the fan (which is of immense importance for longevity and for keeping the noise down) and the care that has been taken to ensure the best possible 'seal' between filter and machine so that all the dirty air drawn into the machine is passed through the filter with none of the above mentioned by-pass.

So for Hepa filter type air purifers, choose a machine with a good quality fan (less noise, good airflow) and try to talk to the retailer to make sure the unit you are considering has a good seal between the filter and the rest of the housing to minimise unfiltered air by-pass.

For the pinnacle of air filtration in the home or office, then you may want to consider an Airfree machine. These units ( P60, P80 and P125 ) clean the air to a higher degree than any of the Hepa type units and also destroy all viruses and bacteria. Completely independent testing from renowned testing houses and Universities worldwide substantiate these claims making them as safe a bet as you are likely to make. However this kind of air purification comes at a price and you can spend up to £199 for the stand alone P125 or as much as £239.00 for the Stainless Steel Wall mounted WM120.

Wednesday 13 August 2008

Asthma and Breathing Disorders Triggered By Mould?

There are many airborne contaminants which are credited to 'triggering' an allergic reaction such as an Asthma attack, none get quite such bad press as the humble mould spore, but perhaps it's not as humble as you think....... read on.

Molds - The Hidden Danger.

Editor's note: Autumn means moulds are out in full force. Outdoor moulds thrive in gutters, soil, rotten wood and fallen leaves. Damp weather promotes indoor mould growth as well. Check bathrooms, kitchens, basements, carpets and houseplants for mould growth. Allergic reactions may be heightened by the airborne spores moulds produce.
Moulds, mildew and fungi are present everywhere...inside and outside. Furniture, carpet, books, even the air we breathe is full of spores. Humid, dark places with little air circulation promote the rapid growth of these fungi.

Hidden Dangers
Eating, relaxing and sleeping in a home full of allergy antagonists like mould, mildew and fungus presents your body with additional challenges which may lead to a worsening of your symptoms. Over 50 moulds are considered problematic, including Stachybotrys, more commonly known as "black mould". Pulmonary hemosiderosis has been linked to toxic mould exposure by the CDC. Mould can grow behind walls and even dead moulds can make you sick. Mould can be found in homes, hospitals, schools and office buildings and may not be easily noticeable. All parts of the country are affected by mould and areas where moisture or heavy rain prevails, are more susceptible to mould, mildew and fungal growth.

Hidden Mold Growth - Behind walls (drywall).
Mould Causes and Symptoms.
Moulds typically grow in buildings affected by water damage and are a potential cause of many health problems including asthma, sinusitis, and infections. People sensitive to moulds are particularly uncomfortable on cloudy, rainy, damp days. Moulds may also play a major role in cases of sick building syndrome and related illnesses. Allergic reactions can be caused by moulds. The most reliable physical findings of mould allergy are dyshidrotic eczema, accompanied by tiny blisters on the palms of the hands. Other symptoms are nummular eczema that looks like ringworm.

EPA estimates indicate 50 to 100 common indoor mould types have the potential for creating health problems.

Mold Types
EPA estimates indicate 50 to 100 common indoor mould types have the potential for creating health problems. Common allergenic moulds include Cladosporium and Alternaria. Moulds that produce mycotoxins, such as Stachybotrys and Trichoderma, can pose a serious health hazard.

Mold Prevention Tips
Important: Always follow instructions of commercial cleaning products and wear an approved mask if you are sensitive to chemicals.

Use a dehumidifier in damp areas (above 50% humidity) of your home. Change the water frequently in the dehumidifier and disinfect to prevent mold from forming.

Peform diligent housekeeping, clean with a solution of hot soapy water and 20 Mule Team Borax or bleach (if the item is colorfast). Use gloves and wear a mask to limit your exposure to chemicals.
Dry and/or replace water damaged areas and items within 24-48 hours to prevent mould growth.
Look for mould or mildew in attics, basements, closets, bathrooms, dirty clothes, hampers, garbage cans and children's soiled stuffed toys.
Check the insides of shoes for mould and scrub and dry thoroughly in the sun if possible.
Try to improve air circulation in the attic, basement, closets and bathroom.
Wipe down the refrigerator and freezer door seals. Clean the refigerator often throwing away left-overs and old produce.
Dry damp areas in the kitchen, laundry room, under the kitchen sink and under the lid of the washing machine.
Clean the lint filter after each load in the dryer.
Clean and/or replace air conditioner filters periodically.
Clean ceiling fans once per month.
If closets are damp, keep the light on to prevent the growth of mould and mildew.
Wash pillows and blankets often. Note: Feather pillows are not recommended for feather-allergic individuals! Hypo-allergenic pillows are available.
Outside, have fallen leaves, decaying plants and compost heaps removed.
Mould Information Resources
More information on molds may be found at EPA's website, Indoor Air - Molds