Prisma Filters for CPAP & Bi-Level Machines by Lowenstein
Prisma Filters for CPAP & Bi-Level Machines by LowensteinPrisma Filters for CPAP & Bi-Level Machines by LowensteinPrisma Filters for CPAP & Bi-Level Machines by LowensteinPrisma Filters for CPAP & Bi-Level Machines by LowensteinPrisma Filters for CPAP & Bi-Level Machines by Lowenstein

Prisma Filters for CPAP & Bi-Level Machines by Lowenstein

PRICE:  £4.95(plus 20% VAT if applicable)
Most products qualify for Zero Rate VAT Relief which will be shown at checkout if applicable.
Please read the VAT Declaration below.

Part Number:  WM29928
Brand:  Lowenstein Medical

  (6 Reviews)

Lowenstein Medical

Replacement Coarse Filters and additional Pollen Filters for the Prisma-series of CPAP and Bi-Level Machines by Lowenstein.

These are the genuine Lowenstein Filters for the whole Prisma-series of CPAP and Bi-Level Machines  and are available as follows:-

2 x Coarse Dark Grey Filters

These Coarse Washable Filters are essential and require washing at least monthly, or when dirty, and replacing every 6 months. 2 are supplied in each pack.

Prisma Coarse Filter

Fitting the Coarse Filter after washing or replacing

Fitting Coarse Filters


12 x White Pollen Filters

These optional Disposable Pollen Filters give extra protection for allergies and sinus issues etc. They must not be washed or allowed to get wet and need replacing every 30 days or sooner if dirty. 12 are supplied which should last for over a year.

Prisma Pollen Filter

Fitting the Optional Pollen Filter (which goes underneath the Coarse Filter)

Prisma Pollen Filter Fitting

Video Includes Fitting the Filters (forward to 1 min 30 seconds)

Average Rating (6 Reviews):  
Write a Review and share your opinions!

Top product and servive
22 October 2023  | 

Appreciated the fact that I could order from someone else and that Hope2sleep informed me of VAT deductions.

Was this helpful to you?  Yes  /  No

This review has not been appraised.

Prisma Filters
26 July 2023  | 

Great quality filters, I made the mistake of ordering elsewhere (before buying from H2S), I won't ever do that again! Brilliant price too.

Was this helpful to you?  Yes  /  No

This review has not been appraised.

Great filters
09 November 2022  | 

Great filters. Work really well with my Prisma Smart

Was this helpful to you?  Yes  /  No

This review has not been appraised.

Effective and economical
01 November 2022  | 

These do an effective filtration job. They go from very white to darker in a month, when used. Extra peace of mind you are breathing clean air. Really cheap compare to some CPAP filters. Simple design.

Was this helpful to you?  Yes  /  No

This review has not been appraised.

Fits perfectly
18 October 2022  | 

Great value, true to size for my CPAP
Also reusable easy to wash.

Was this helpful to you?  Yes  /  No

This review has not been appraised.

Pollen Filters for Lowenstein Prisma
08 May 2022  | 

These arrived quickly- service from Hope2Sleep is always excellent. Very simple to insert in the machine- just remove the grey dust filter, slip a white pollen filter in its place, then out the dust filter back, on top of the pollen filter. There is enough in the pack to last you two years, following the instructions for changing it regularly. So not expensive and well worth it.

Was this helpful to you?  Yes  /  No

This review has not been appraised.



We try our best to ship all orders received by us Monday-Friday on the same working day if received before 12 noon, and more often than not orders processed before 3pm will be despatched the same day whenever possible.  Weekend or UK bank holiday orders are sent out the next working day.  An automated email is sent when products have been despatched so please check your spam box and add us to your safe senders list.  Also, if you do not receive an email confirmation, please check that you have typed the correct email address in your account.

All orders are sent via 1st class mail within the UK.  Masks and some other more expensive products are always sent via 'signed for' insured delivery and cannot be left in 'safe' places, but there is the option for an alternative shipping address when processing the orders. 

Delivery charges are worked out automatically by weight and you can clearly see the delivery charges before making a payment.  On the rare occasion delivery charges are miscalculated by the website, a refund will be sent, as it is not our policy to make money on postage charges and neither do we add the cost of delivery into the price and offer so-called  'free delivery' like some sites and Ebay pressurise sellers to do! 

Wherever possible with larger parcels, we try to re-use boxes to keep shipping costs down and protect the environment.

If a product is out of stock and the order contains multiple items, the 'in stock' items will be sent immediately and further items will follow upon arrival with no further postage charges incurred.  

Important for International Orders

We can ship most products internationally, but all prices are in UK British Pounds and if paying by debit or credit card the bank will automatically convert to the current conversation rate.  Likewise, if you choose the Paypal option, they will convert into your currency for you as payment is made.  

International orders are sent via tracked Airmail, and whilst we're happy to ship internationally, we cannot be held responsible for any delays at Customs at your end, or charges that may be added in your own country, such as customs fees and import tax on delivery, which are determined by your country’s import laws and are beyond our control. Therefore, it is the customer’s responsibility to pay these charges, and certain courier companies will not be able to deliver the goods to you without pre-payment of any charges. From our experience, it appears to be randomised as to which parcels incur extra charges, but please know that all accompanying paperwork is filled in correctly when shipping and there is nothing more we can do, as much as we'd like to.

If you purchase from us out of the UK or you move to another country after purchasing products, please be aware that the warranty for CPAP machines, masks and parts from the manufacturers are under warranty  with the manufacturer based in the UK, so you will be responsible for sending the product back to us and will need to pay postage to get the product back to you after exchange or repair, as the manufacturer will not pay for shipping in any country outside of the UK.


Masks, CPAP machines and and most other products are exempt from a refund or exchange unless faulty due to health and hygiene issues - as stated in our 'Terms and Conditions', and in particular due to the risk of cross contamination as they cannot be re-sold. The Consumer Contracts Regulations 28.(3)(a) confirms exemption as follows:-  "exemption in the case of a contract for the supply of sealed goods which are not suitable for return due to health protection or hygiene reasons, if they become unsealed after delivery."

Unopened (sealed) products in their original packing can be returned within 14 days for a refund of the product cost, but the purchaser is to pay the return postage, and we would advise retaining proof of postage. This excludes any faulty goods, for which postage will be reimbursed.  A full refund for the price of the product will be issued when received by us, less the original postage charges when the order was sent to you.



Most of the products we sell are eligible for Zero Rated VAT in the UK, and in order to qualify, you should meet the criteria for the following HMRC VAT Declaration:-

  1. You or the person you are purchasing on behalf of have "a condition which the medical profession treats as a chronic sickness," (sleep apnoea and sleep disordered breathing, which require therapy, are such conditions).
  2. "The goods or services are for the personal or domestic use of the customer."

We cannot advise on individual cases, but more information can be found on HMRC’s website under notice 701/7 on the following link

If you are not eligible for Zero Rated VAT then please make sure that the VAT Relief box in unticked so that VAT is applied to the order.

If you are purchasing on behalf of someone else who meets the above criteria, you must provide their name and address, and you will be prompted of this during the checkout process.

Customers living outside of the UK do not pay UK VAT charges, so please leave the the VAT Relief box ticked.  However, we cannot be held responsible for any additional costs incurred when the products reach your own country.

If you are purchasing with the intention of re-selling any products, you are liable to pay VAT on all products so you must untick the 'zero rate eligibility' box which will add VAT to your order.

Any products that our not eligible for zero rate VAT, will not display the VAT Declaration, and VAT will be added at checkout.

Related Products