Frequently Asked Questions

Q. Does the Maxi-Filtra really work?
A. Yes, provided that the odours you are suffering from are eminating from the ventilation pipe the Maxi-Filtra definitely solves the problem. We have now sold thousands of Maxi-Filtras and we receive only positive feedback.

Q. What can't the Maxi-Filtra do?
A. The Maxi-Filtra prevents unwanted odours from escaping via the ventilation pipe. It can't do anything about odours eminating from other parts of the sewage system such as a broken covers or leaking pipes.

Q. How does the Maxi-Filtra work?
A. The Maxi-Filtra contains a cartridge of Activated Carbon that prevents the Sulphides, which cause the smell, from reaching the atmosphere. Air can pass through the filter in either direction, allowing the system to "breathe", but the bad smells can't escape.

Q. Will the Maxi-Filtra fit my vent pipe?
A. There is only one size of Maxi-Filtra but it can be made to fit any ventilation pipe size (normally 100mm in France) using the appropriate adapters. Click here for more information

Q. How long does the filter cartridge last?
A. The STUDOR Maxi-Filtra should remain effective for up to two years. However, in situations with a high odour saturation, the carbon filter may need to be replaced more regularly.

Q. Can I change the filter cartridge easily?
A. Yes, as long as you have access to the Maxi-Filtra, replacement of the cartridge is very easy.

Q. Are the replacement cartridges expensive?
A. No. Replacement cartridges are available from the Humm-Busters online store.

Q. Will the Maxi-Filtra be affected by the weather?
A. The STUDOR Maxi-Filtra is constructed in black ABS plastic and is resistant to adverse weather conditions (-20°C to +60°C). However, for additional protection we supply an Aluminium cover.

Q. How much is the Postage & Packing?
A. Orders that include a Maxi-Filtra will be shipped free of charge to addresses in the UK, France, Eire and Spain. For all other orders, it depends upon what you order, where you live and the shipping method you choose. The actual cost is calculated in the online store once we know what you want and where you want it to be sent. Packages are despatched by Royal Mail First Class Post, Next Day Delivery, Small Packet Airmail or Airsure services.

Q. What payment methods do you accept?
A. We accept credit card payment by any of the cards whose logos appear at the top of the online store page.

Q. Who or what is RBS WorldPay?
A. RBS WorldPay is a payment gateway that processes credit card payments on behalf on internet merchants such as ourselves. It is a highly secure sytem that is owned and managed by the Royal Bank of scotland. Using RBS WorldPay we do not get to see or copy any of your credit card details.

Q. Is the Maxi-Filtra available in DIY stores?
A. No