Greater London · Grease filter exchange
Grease Filter Exchange in Penge
One call covers a scheduled grease filter exchange, swapping dirty canopy filters for clean ones in Penge, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Hand-washed filters that still look greasy
- Filters so greasy the air can barely pass
- Grease building up behind the canopy filters
What we are called out for in Penge
Repeated removal and washing takes its toll on filters. A bent filter doesn’t seat properly and grease passes round them.
If you notice any of these, it’s worth a diagnosis:
- Grease filters clogged with grease
- Weak extraction at the canopy
- Hand-washed filters that still look greasy
- A greasy plenum behind the filters
Bursars and site managers at schools such as Harris Primary Academy Crystal Palace tend to book extract cleaning for when the kitchen is empty.
Before you book anyone
- Whether the work can be done while the site is closed
- Whether a written report and pictures are included
- When the next visit should be, and why
- Which accreditations they hold, and whether you can check them
How we handle grease filter exchange in Penge
An exchange visit in Penge does not take long. The greasy filters come out, clean ones go in, and we check they’re seated with no gaps. If something looks wrong, we tell you. If you have grease filters clogged with grease and hand-washed filters that still look greasy, we can help.
London kitchens tend to trade late and open early, so work in Penge is normally booked for the night or the early hours. Parking, loading and access to the roof are agreed with the building before the night of the clean.
Good records are part of the job. Each visit is written up with photos, covering the work done, any areas we couldn’t access and a recommended next date. Keep it with your fire safety records so it’s ready for an insurer, fire officer or EHO.
- Location
- Penge (SE20, SE19, SE26)
- Wider area
- Greater London
- Records
- Report and pictures after the visit
- Quotes
- A fixed quote up front
- Hours
- Out of hours as standard, 24/7 emergency line
- Call
- 0345 646 2711
- Page updated
- 30 October 2026
How the job changes from site to site
Mesh filters
Mesh filters are still found in many canopies. We exchange them on the same basis as baffles.
Baffle filters
A clogged baffle filter restricts airflow. Swapping them for a clean set restores it.
Your questions about grease filter exchange in Penge
How do you handle parking and loading in Penge?
Parking and loading in London need planning, so tell us about bays, permits and building rules when you book. Much of our London work is done overnight, which helps.
Which fire and rescue service is responsible for Penge?
Penge is in the area of London Fire Brigade. It’s worth keeping your fire risk assessment, TR19® certificates and photo reports together, ready to show.
What if parts of the system cannot be reached?
We never leave them off the paperwork. You will know exactly which parts weren’t reached and why, and we can quote to improve the access.
Which accreditations do you hold?
We hold CHAS, SafeContractor and ISO 9001, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. Vent Hygiene Elite is run by BESCA and independently audited.
Can you come out in an emergency?
Yes, any time. If something urgent happens, like a fan failing or damage after a fire, call our 24/7 line, and we’ll advise on what to do next.
Is there a survey before the work?
Yes. We always survey first, from your photos and details, or with a visit where necessary. A fixed quote follows.
What should go in our maintenance log?
Everything that shows the system is looked after: our reports and pictures, any certificates and your in-house logs. A single log for each site works best.
Do you work with multi-site operators?
Yes. Our area covers London and the South East, so sites at different addresses can be planned together on one programme. Every site has its own report.
More services for Penge
Looking after it afterwards
No system stays clean for ever, but care slows the build-up. A few tips:
- Keep the extract on whenever the range is in use
- Keep every filter in place during service
- Tell us if the menu or opening hours change
- Book full TR19 cleans alongside filter changes
The canopy looks cleaner and the air moves better from the moment they’re fitted. Always run the extract during cooking so they catch grease as intended.
Filter exchange and TR19 cleaning work best together. A maintenance plan that covers both keeps everything on track.
Why deal with it now?
Once filters are saturated, more grease gets past them. The ductwork then loads up faster and grease readings can rise between cleans. In Penge, as across London, ductwork often passes through shared risers and other people’s space.
When the work has to happen, how we reach it and how big the site is can all change the price. Each of those is built into the quote, and the price is fixed before work begins.
Why choose Duct Doctor in Penge
- Accredited under CHAS and SafeContractor, with ISO 9001
- Out-of-hours work and a 24/7 emergency line
- Trading since 2009
- Fixed quotes, normally within one working day
Take a look at what affects the cost and how to check a contractor.
What your team can do, and what needs us
Keep a record of what your team does. A dated log of in-house cleaning and checks helps show that the system is managed between specialist visits, alongside our reports.
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. That is our job.
What affects the quote in Penge
Before we fix a price, we need to know a few things. We check:
- The times the site is available
- Whether we need access equipment or extra panels
- Where the site is and how we reach it
- The number of sites or systems
Leaving it longer rarely makes the work cheaper. Build-up, wear and faults tend to get worse, not better, and a neglected system can mean more work. If you’re not sure what’s needed, give us a ring on 0345 646 2711, or send details by email for straight advice and a fixed quote.
What we need to know
Photos and a few facts are often enough to price the work. Useful things to send:
- Your last certificate, test record or report
- When the site is open and when it’s quiet
- The site address and the type of premises
- A few general shots of the system
We don’t publish a price list, because no two systems are the same. We look at your system first, from pictures or on a visit, and then send you a fixed quote. To start, give us a ring on 0345 646 2711 or email us.
Penge kitchens: local notes
Food Standards Agency data counts about 269 cafés, restaurants and staff canteens and about 129 takeaways within roughly a mile and a half of the centre of Penge. Swapping filters on a schedule keeps kitchens like these drawing air properly. London Fire Brigade covers Penge. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order. Overnight is the normal time to clean a London kitchen extract, so trading is not affected.
Healthcare kitchens cannot easily close, so their extracts are cleaned overnight or between meal services; the nearest hospital to Penge is St Christopher's Hospice, about 0.5 miles north. Volunteers running a hall kitchen near Church of St John the Evangelist, or anywhere in Penge, may not know when the extract was last cleaned, and a grease test settles it.
Penge is about 1 mile west of Beckenham, in Greater London. Wherever you are in the SE20 postcode area, we can take on grease filter exchange. 764 places in Greater London are on our list, large and small. We also work in London, around 6 miles away.
Postcode districts we cover here for grease filter exchange: SE20, SE19 and SE26. If you need grease filter exchange at premises on High Street, Anerley Station Road and Station Road or anywhere close by, our technicians can take on the work. Main roads around Penge include the A234, which makes travel easy for evening and night visits. Neighbouring places we cover for grease filter exchange include Anerley (1 mile west), Crystal Palace (1 mile north-west), Sydenham (1 mile north), Gipsy Hill (1 mile north-west) and Upper Norwood (1 mile west). We also work in nearby towns such as London (6 miles north), City of Westminster (8 miles north-west), Marylebone (8 miles north-west), Kensington (8 miles north-west), St Pancras (8 miles north) and Shoreditch (8 miles north).
Landmarks near Penge
In Penge, that means kitchens and buildings near Crystal Palace School, Crooked Billet pub and Crystal Palace Dinosaurs, among other places. Penge has its own railway station: Penge West station. Well-known places in the area include St Christopher's Hospice (0.5 miles north) and Crystal Palace Museum (0.8 miles north-west). The countryside around Penge includes Dulwich Upper Wood and Knight's Hill.
The process
We’re used to working while the site is closed. A lot of visits happen overnight or at weekends, so a kitchen or building can carry on as usual the next day. On site, the work takes anything from a few minutes to an hour or so, depending on the number of filters. Night and weekend working is normal for us in London, and a site in Penge is no exception.
- First, we record the size, type and number of filters in each canopy.
- We agree a schedule that suits how much the kitchen cooks.
- On each visit, the dirty filters come out of the canopy.
- Clean filters go straight back in, seated properly with no gaps.
- If a filter is damaged or the plenum needs attention, we tell you.
Getting ready for the visit
- Find the previous report, if there is one
- Let us know about parking and loading
- Let us know when the site is closed or quiet
Getting a quote
Every quote begins with a look at the system, from your pictures and details or, where that is not enough, a survey on site. After that, you get a fixed price for the work so you know the cost before work begins.