Sometimes a steamer will remove your mould problem:
Vacuum Cleaners & Steam Cleaners - HEPA devices for IAQ concerns
Vacuum Cleaner & Steam Cleaner - Advice from an IAQ Investigator: These devices are used as household (or professional) cleaning tools for environments with high levels of settled dust containing allergens, mold, etc. One can not fix an allergen or mold problem by vacuuming, but one might be able to reduce the particle load in your air by careful cleaning. A wide range of HEPA-filter vacuum cleaners and HEPA vacuum cleaner bags is now on the market, all of which are likely to be of some help. Beware: some particles such as certain toxic mold spores (Penicillium/Aspergillus, for example) are so small (1-2 microns) that ordinary household vacuum cleaners simply aerosolize them, making you suffer more not less. As we get reports of products people like some of them will be listed here, but any web search will turn up many more hits. Read the product literature carefully as machines vary widely in cost, in ease of cleaning, noise level, effectiveness, as well as sometimes unpleasant and high-pressure salesmanship such as is found at our local Poughkeepsie New York Main Street vacuum cleaner dealer.
Ultimately, no amount of vacuuming wall to wall carpets indoors will eliminate an allergen or mold problem. To my clients who have asthma, allergies, or other respiratory concerns I recommend elimination of wall to wall carpets entirely. However even with all carpets out of a home, housecleaning of dusty surfaces is still needed. A HEPA vacuum cleaner can help in this task, but check the unit that interests you for leaks and blow-by since even if the filter is HEPA rated, if the cleaner leaks it's stirring up unwanted particles. I'd also compare not only purchase cost but ease and cost of bag or filter cleaning or replacement.
What does "HEPA" mean? HEPA is an acronym for 'High Efficiency Particulate Air'. HEPA filters originated in the 1940's, and HEPA became a registered trademark. A HEPA� filter should remove least 99.97% of ultra-fine particulates such as dust, animal dander, smoke, mold and other allergens that are down to 0.3 microns, from the air. Since the smallest indoor mold spores are around 1 micron, they pass right through ordinary filters and vacuum cleaners - vacuuming in a moldy environment using the wrong equipment can make matters worse!
The Allergy Buyers Club offers a comparison of HEPA vacuum cleaners but I don't think they've evaluated them for leakage.
Ecosteam (UK) produces a range of home and commercial high-quality steamers
Electrolux (U.S.) sells excellent HEPA vacuum cleaners, though IMHO a bit pricey. For a client I tested wall to wall carpeting before and after vacuuming with an Electrolux vacuum cleaner. In the lab microscope I could see a significant reduction in particle debris levels in my own lab instrument vacuum of carpet samples.
Fogacci steam vapor machine (allergen control), The Home Environmental Co. 184 Bedford St., Lexington MA 02173 617-862-CURE 617-861-6251 fax
Miele - makes excellent HEPA vacuum cleaners.
Nilfisk - www.pa.nilfisk-advance.com
Orek makes HEPA vacuum cleaners.
Kirby makes a high-end HEPA-rated vac
Saeco steam cleaner/vacuum $599. See Real Goods - the eco product co-op.