What are Shepherd Filters made of?

Shepherd Filters are disposable kitchen grease filters made from 100% wool. Wool is naturally flame resistant and bio-degradable and therefore, safe to dispose of in your regular waste bin! Wool is the obvious choice for anyone concerned about the environment (and much safer to use than cleaning chemicals).

Can the Shepherd Filter fit into an existing hood?

Yes, filters are designed to retrofit to existing kitchen hoods.

Shepherd filters are pre-cut in all standard sizes to use with a specially designed UL1046 certified stainless-steel baffle frame, making the filters easy to use and highly effective.

What impact does this present to food safety or finished food product?

In terms of food safety, as the Shepherd Filter has no direct contact at all with the food produced, there would be no risk.

Keeping kitchen extraction systems free from grease build-up with the use of kitchen grease filters ensures that high HVAC hygiene standards are maintained, which is important in food preparation areas and required by food safety standards and local council regulations.

What impact does this have on the existing hood certification and insurance coverage?

Shepherd Filters will not alter the hoods function, operation, or infringe on the certification of the existing hood.

The single most important thing you can do to keep your systems safe is to regularly inspect and keep the system free from grease.

If you think your kitchen exhaust hood ventilation system does not meet current standards or represents a fire risk, you should contact SHEPHERD FILTERS to arrange an obligation-free fire risk assessment.

In the event of fire, what liability impact does this have for the restaurant?

Our product has been tested, listed and certified to all or more of the same standards that your current metal filters have been subjected to. With that said, the liability should not change at any level.

Will I still need to have my kitchen exhaust ducts cleaned regularly?

A clean system protected by the Shepherd Filters solution means you can greatly reduce the frequency of extensive hood, canopy and duct cleaning. This will see you saving for years.

With Shepherd Filters, airborne grease is heavily reduced from entering the kitchen hood exhaust system by up to 98%. This offers immediate savings by dramatically decreasing both the labour costs associated with cleaning metal grease filters and the number of kitchen duct cleans.

A simple mini spot inspection and clean only when required is all you will need to do.

In general, insurance companies require that kitchen exhaust systems be kept clean (not necessarily to be cleaned). So if the Shepherd Filters are used as per the filter change guide, a much cleaner kitchen exhaust duct and canopy will be the result and the frequency of kitchen duct cleaning will therefore reduce significantly.

Ultimately the responsibility is on the restaurant/food outlet owner, facilities manager and/or hotel engineer. Before your next clean, make sure you:

  • Engage a reputable kitchen duct cleaner
  • Know exactly what they are going to clean
  • Know how much it should cost; and
  • Check the work prior to payment!!! Why?

Shepherd Filters may be changing the way grease is managed in kitchen exhausts, but we are so concerned by the state of some systems we see, and the risks operators are taking not checking the work of the kitchen duct cleaner. Educate yourself and read about our experience with fake cleans.

Do Shepherd Filters kitchen grease filters have or meet the relevant certifications?

  • AS 1668.2 E6 Kitchen Exhaust Hoods Incorporating Grease Removal Devices
  • NFPA 96 Standard for Ventilation Control and Fire Protection of Commercial Cooking Operations
  • UL1046 Flame Test


Shepherd Filters Disposable Grease Filters

Shepherd Filters is proud to be a Member of IKECA and AIRAH

Shepherd Filters Disposable Grease Filters IKECA

Is there a guide on when and how to change your disposable kitchen grease filters?

Our Filter Change Guide will ensure that you know when it’s time to replace a filter. The best time is generally in the morning before equipment switched on.

If your laminated guide is missing from the wall, please contact us immediately and we will send you a new one.

For more on this, watch the short video below:

The frequency and colour of the filter will be affected by the equipment being used and what is being cooked. See below for an indication based on the cooking equipment that may feature in your kitchen:

Shepherd Filters Disposable Grease Filters

*Times may vary due to hours used per day and types of cooking.

Here is a quick demonstration on how a Shepherd Filters kitchen grease filter is replaced:

Is airflow affected when using Shepherd Filters?

Shepherd Filters capture up to 98% of airborne grease before it enters the exhaust duct without restricting airflow, when the wool filter media and frame are used together.

Easy to use, our products come with the peace of mind that they have been:

• Airflow tested
• UL1046 flame barrier tested; and
• HACCP approved

Shepherd Filters is the result of many years of development, receiving the UL 1046 standard in 2006, as well as AS1668 and NFPA 96. Shepherd Filters is patented in the USA, Australia and New Zealand. It is protected in numerous countries due to the specific natural formula of the product in regards to weight and loft. This formula optimises the capture and containment of grease particles without a restriction of airflow to the exhaust hood system. Click below for a copy of our:



Does wool burn?

Wool is an excellent fibre when it comes to fire safety as it is naturally flame-resistant.

Wool may be ignited if subjected to a significantly powerful heat source, but does not normally support flame and will instead smoulder (usually only for a short time).

For more on this fascinating fibre, visit ITWO.