Hertfordshire · Grease filter exchange
Grease filter exchange in London Colney, Hertfordshire
A scheduled grease filter exchange, swapping dirty canopy filters for clean ones in London Colney, surveyed first and signed off with a written report and photos. Call for a fixed quote.
- A canopy that drips grease
- Grease filters clogged with grease
- Hand-washed filters that still look greasy
Grease filter exchange in London Colney
We run grease filter exchange for all kinds of kitchens in London Colney, whether there’s one canopy or many. Visits can be timed around your service, so cooking is not interrupted. If you have grease dripping from the canopy and a canopy running with filters missing, we can help, from wall canopies, school and hospital kitchens and island canopies onwards.
Size does not change the work: a kitchen in a place like London Colney gets the whole system cleaned, canopy to discharge. The visit is booked around your opening hours, and the journey is planned ahead.
Duct Doctor has been trading since 2009, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we’re fully insured.
- Location
- London Colney (AL2, AL1)
- Wider area
- Hertfordshire
- Paperwork
- Report and pictures after the visit
- Quotes
- Fixed quote, usually within a working day
- Hours
- When your site is closed, plus a 24/7 line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
Do you need grease filter exchange in London Colney?
Every fry, grill and sauté sends grease-laden vapour upwards. Much of it is trapped by the filters so they gradually clog until the air can barely get through.
Look out for any of the following:
- Damaged filters letting grease past
- Staff short of time to wash filters
- Smoke and heat lingering under the hood
- A greasy plenum behind the filters
Older buildings often hide long, awkward duct runs, and if you run a kitchen at a historic venue in the area (Batchwood Hall is about 3.9 miles north-west), access may need planning.
Before you book anyone
- Exactly which parts of the system are covered
- Which accreditations they hold, and whether you can check them
- Whether a survey comes first
- If the quote is a fixed price or an estimate
What the work involves, part by part
School, care home and staff kitchens
A longer exchange interval may suit lighter cooking. The interval is set to fit.
Canopy filter housings
The filter housing holds each filter at an angle in the canopy. A damaged housing leaves gaps.
Landlords, agents and facilities managers
Under the Regulatory Reform (Fire Safety) Order 2005, the responsible person must assess and reduce fire risk, and that can be the employer, the owner, a landlord, a facilities manager or a managing agent. Where responsibility is shared, records matter even more.
Whether it’s one building or many, you get the same standard: diagnosis, a fixed price, work booked around your hours and a written report with photos.
What we do, step by step
There’s very little for your team to do on the day. A contact on site lets us in at the agreed time and points us to the system, and the rest is down to us. Afterwards, the area is left tidy and the written report follows. Because the survey comes first, a visit to London Colney can usually be finished without a second trip.
- First, we check the canopies and the filters in them.
- We note any filters that are bent, damaged or missing.
- Greasy filters are swapped for clean ones.
- The filters are checked for fit before we go.
- Anything that needs attention, such as a greasy plenum, is pointed out.
Getting ready for the visit
- Mention any sign-in, permit or induction we need
- Clear the space around the work
- Name a contact who can let us in at the agreed time
How to get a quote
If you need grease filter exchange in London Colney, ring 0345 646 2711 or use the quote form. Let us know the site type and the opening hours, plus photos or the previous report if they’re to hand. We normally send a fixed quote within one working day.
Related advice
London Colney questions
Who carries out food hygiene inspections in London Colney?
Food hygiene inspections in London Colney are carried out by St Albans City council. An officer may look up into the canopy, so clean filters on the day and a recent certificate on file both help.
Do you do school kitchen extract cleaning in London Colney in the summer holidays?
Yes. Half-terms and the summer break are the natural time for school work. Food Standards Agency records list about 9 schools, colleges and universities with registered kitchens within about a mile and a half of London Colney. You can phone us on 0345 646 2711 or email us with the dates the site is empty.
How long will you be on site?
It depends on the size of the system, but for many sites it takes a few minutes per canopy, longer for a large kitchen with several canopies. We will give you a better idea when we quote.
Do you clean filters as well as exchanging them?
We offer filter cleaning as well as exchange. We’ll explain the options when we quote.
Do you cover London Colney?
Yes. We cover London Colney and the rest of Hertfordshire, within our South East and London area. To book, call 0345 646 2711 or drop us a line.
Can you give a price for filter changes?
The cost depends on your filters and the schedule. We will give you a fixed quote, normally within one working day.
Will we have to stop cooking for a filter change?
Most changes take less than an hour in most kitchens, so the impact is small. We plan visits outside your busiest times wherever we can.
Do you have insurance?
Yes. Duct Doctor is fully insured, and we can share the details when you need them.
When it’s something else
An honest diagnosis matters more to us than a booking, so here’s what grease filter exchange won’t do:
- A canopy that doesn’t capture the vapour properly
- A fan that is failing or too weak for the system
- Odours from the discharge that filters will not stop
Not sure which it is? You can phone us on 0345 646 2711, or send details by email and we’ll tell you honestly before booking.
What the work covers
- Wall canopies
- Baffle filters
- Mesh filters
- Island canopies
- School and hospital kitchens
- Restaurants and pubs
London Colney kitchens: local notes
According to Food Standards Agency records, there are about 10 pubs and bars in London Colney and the streets around it, up to about 1.5 miles out. A pub or hotel kitchen that cooks every day builds up grease in its extract like any other. It’s St Albans City council that sends environmental health officers to food businesses in London Colney. An officer looking round a kitchen will see the canopy, and grease there is hard to miss. Our report lists what was cleaned and when, which is useful to have ready. London Colney sits within the area of Hertfordshire Fire and Rescue Service. Fire and rescue authorities enforce the Fire Safety Order in most non-domestic premises, and in a kitchen that fire risk includes the grease in the extract.
Healthcare kitchens, like those at hospitals such as Napsbury Hospital (about 0.5 miles west), often cook for long hours, which puts them in BESA’s heavier-use bands. Bursars and site managers at schools such as Bowmansgreen Primary School tend to book extract cleaning for when the kitchen is empty.
London Colney is about 2 miles south-east of St Albans, in Hertfordshire. London Colney gets the same approach as every site we work on: a survey first, a fixed quote, work timed around your hours and a report with pictures. We cover 381 places across Hertfordshire, large and small. London is in our area too, around 18 miles away.
Work in AL2 and AL1 is surveyed, quoted and booked the same way as anywhere else. We cover sites on High Street, London Road and Haseldine Road and the roads around them. We also cover Broad Colney (1 mile south), Tyttenhanger (1 mile north), Shenleybury (1 mile south), Sleapshyde (2 miles north-east) and Colney Heath (2 miles north-east). Within a short drive, we also cover Watford (6 miles south-west), Hemel Hempstead (7 miles west), Stevenage (14 miles north), Welwyn Garden City (7 miles north-east), Harpenden (7 miles north) and Hoddesdon (12 miles east).
What’s near London Colney
Locally, jobs take us to businesses close to White Horse pub, Highfield Park and Samuel Ryder Academy and the streets around them. For rail, the closest station is Park Street station, roughly 1.9 miles west. A little further out are Napsbury Hospital (0.5 miles west) and St Albans Musical Museum (2.6 miles north-west). The countryside around London Colney includes Verulamium Lake and Broad Colney Lakes.
Towns and villages near London Colney
More services for London Colney
Leave it or put it right?
A filter exchange is a few minutes; a choked extract affects a whole service. Few maintenance jobs are as easy, and one of the easiest to let slip. Booking now means the visit to London Colney is planned around you, not forced by a breakdown.
Putting the work off seldom saves money. Problems in a system tend to grow, which can make the next visit longer. If you are unsure, call 0345 646 2711 or use the quote form and we will give you an honest view and a fixed quote.
Why choose Duct Doctor in London Colney
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- A single point of contact for sites across the South East and London
- Every job surveyed first
- A fixed price before any work starts
Read how cleaning jobs are priced and our accreditations and certificates.
Aftercare tips
Here’s the after-treatment advice, short and simple:
- Make sure no filter is left out
- Let us know if your cooking hours increase
- Wipe the outside of the canopy as part of daily cleaning
- Keep filter exchange and TR19 cleaning on the same plan
If the plenum behind the filters looks greasy, we say so. That might mean bringing a TR19® clean forward, and we can arrange it.
If cooking has stepped up, the filter schedule should too. Changing the interval early stops grease building up unseen behind the canopy.