How To Clean Your Extractor Hood And Filters

cleaning an extractor hood filter

Grease, grime and dirt love to build up on extractor hoods. It’s one of nature’s laws.

Because your cooking hood lives right above your hob and its primary purpose is to draw up the smoke or steam that your cooking food gives off, there’s no avoiding it getting slightly greasy over time.

What can be avoided, though, is a thick layer of grease building up and making it both dirty and less effective. The longer you put off cleaning your extractor hood and filter, the less effective it will be and the harder you’ll have to work to get it clean.

Be proactive and get your extractor hood back to full working order by following our guide to cleaning both the hood itself and the important filters.

How to clean extractor hood filters

Extractor hood filters are the fine mesh grates that are on the underside of the hood. They serve to keep all of the grease that cooking smoke contains out of the extraction vents to avoid them being clogged and more expensive cleaning tasks being necessary.

how to clean extraction filters

Cleaning your extractor hood filters is a simple process:

Method 1
  • Remove your filters carefully
  • Fill your sink, a large pan, or a large bucket (big enough to fit at least half of the filter in) with boiling water and mix in baking soda and dish soap
  • Put the filters in the hot water and let them soak for at least 10 minutes
  • After they’ve soaked, scrub them gently with a brush (make sure it’s not too stiff a brush to avoid damaging the filters), rinsing occasionally until all of the grease build up is cleared
  • If you could only fit half of the filter in the water, repeat for the other side
  • Rinse thoroughly and pat dry or allow to fully air dry
  • Reinsert the filters into the extractor hood
Method 2
  • Remove your filters carefully
  • Put the filters in the dishwasher on the hottest program available.
  • If the filters are still blocked with grease then repeat the process again to try to clear it out.
  • If after a few washes they are still blocked you might need to think about replacing them.

How to clean an extractor hood surface

It’s not just the filters that can get dirty, however. The surface of extractor hoods also pick up a layer of grease over time and dust can collect too, creating a sticky, fluffy coating on what was once a pristine surface.

Most extractor hoods are made of either stainless steel or glass, so we’ll cover both here!

Cleaning a stainless steel extractor hood

  • Mix bicarbonate of soda with boiling water and use a sponge to gently scrub the hood with the solution
  • Use a household grease removing product (or try making your own!) and a cloth, wiping the hood and removing the now loosened grease and dust
  • Wash gently with warm water to remove all remains
  • Dry with a cloth or allow to air dry before optionally applying a coat of stainless steel polish if you want an extra glossy finish

Cleaning a glass extractor hood

  • Just like with stainless steel, mix bicarb of soda with boiling water and softly scrub the hood all over to loosen the grime, using paper towels to get rid of the excess solution as you go
  • Use a grease removing detergent or washing up liquid to dissolve the grease.
  • This should clear all the grease build up fairly quickly, but it might take several passes.
  • Once the grease is all removed, use a household glass cleaner to create a sparkling finish

If you cleaned your cooker hood because it was under-performing and you thought it might be a build-up of grease, but it’s not helped, it might be an internal fault with the motor or control switch.

We offer extractor hood repairs across the country, so get in touch if you need help and you can get back to having a fresh smelling, smoke-free kitchen in no time.


Sunday, September 29, 2019 at 11:52 am


Do you guys do kitchen extractor cleaning service?
How much you quote for service to clean home kitchen extractor cleaning?


Monday, September 30, 2019 at 8:41 am

Unfortunately we don’t offer that service but you shouldn’t need it.
The metal grease filters you can put through the dishwasher on the highest temperature wash. If they are still not clean then run them through a few more times.

Apart from that your best bet is to get a domestic cleaning service to clean it over for you. There is nothing special that needs to be done with cleaning cooker hoods, you just need to remember that it is grease you are dealing with so heat and detergent like washing up liquid must be used.

If the metal grease filters are still clogged after going through the dishwasher a few times you will need to buy new filters and then make sure you wash them more reqularly so the same situation doesn’t occur again.

colin morgan
Tuesday, May 19, 2020 at 11:02 am

2 years ago we moved into a new bungalow complete with SMEG kitchen appliances.
The fridge is integrated and has a hole which leaks water onto a shelf which is supposed to evaporate but it does not.

Smeg provide a plastic stick which you poke in the hole to remove debris.

This is supposed to make sure that no water escapes into the fridge but it does and needs wiping out every 2 weeks.

I have bought a more longer plastic stick but to no avail

Is there a permanent cure for this. PLEASE

Andy Grocott
Saturday, May 30, 2020 at 11:48 am

I used Dr.Oetker Bicarbonate of soda with hot water on my cooker hood & the result was Amazing !! So Quick & Easily cleaned the sticky grease & dust grime off immediately

Olivia Agate
Saturday, January 9, 2021 at 11:14 pm

Hello, I have tried cleaning my stainless steel cooker hood with all the methods mentioned above but it dies streaky always in the same places. Any tips?

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