Hertfordshire · Grease filter exchange
Grease filter exchange in Codicote, Hertfordshire
Grease filter exchange for Codicote and the surrounding area: diagnosis first, then a fixed quote, the work and a report with pictures. Call for a fixed quote.
- Staff short of time to wash filters
- Weak extraction at the canopy
- Grease building up behind the canopy filters
What the work involves, part by part
School, care home and staff kitchens
For kitchens closed in the holidays, visits can be timed around term or rota so the filters are clean when cooking picks up.
The plenum
Heavy grease in the plenum often follows clogged or missing filters or that the next TR19 clean is due.
Grease filter exchange in Codicote
Filter exchange sits between full TR19® cleans. Fresh filters help limit what gets into the ductwork, but some grease still passes through as vapour. So the canopy, plenum and ducts still need their full TR19 clean. The work covers island canopies, restaurants and pubs and baffle filters, and the jobs we see most are filters so greasy the air can barely pass and staff short of time to wash filters.
Size does not change the work: a kitchen in a place like Codicote gets the whole system cleaned, canopy to discharge. We plan the visit around your hours, with the journey sorted in advance.
Insurers, fire officers and environmental health officers all look at records. That’s why every job is written up in a report with pictures, and grease extract cleans come with a TR19® certificate issued through the BESCA Vent Hygiene Elite portal.
- Place
- Codicote (SG4)
- Wider area
- Hertfordshire
- Records
- Photo report after every visit
- Price
- A fixed price before any work starts
- Working hours
- After hours by arrangement; emergencies any time
- Telephone
- 0345 646 2711
- Updated
- 30 October 2026
Kitchen extracts in Codicote
The FSA’s food hygiene register includes about 3 pubs and bars across Codicote and its immediate surroundings (about a mile and a half). Any of them serving cooked food has an extract to keep clean, from canopy to discharge. It’s North Hertfordshire council that sends environmental health officers to food businesses in Codicote. They look at how clean the premises and equipment are, and the kitchen extract is part of that. A dated certificate in the maintenance file answers the question before it’s asked. Codicote sits within the area of Hertfordshire Fire and Rescue Service. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises.
Volunteers running a hall kitchen near Parish Church of St Giles, or anywhere in Codicote, may not know when the extract was last cleaned, and a grease test settles it. School kitchens, at schools like Codicote Church of England Primary School for example, are normally cleaned in the holidays so no lunches are lost. Historic houses near Codicote, such as Shaw's Corner about 1.7 miles south-west, are a reminder that older buildings with event kitchens can have long, awkward duct routes.
Codicote is about 4 miles north-west of Welwyn Garden City, in Hertfordshire. From the centre of Codicote to the outskirts, grease filter exchange is available to all kinds of commercial premises, from a single unit to a large public building. Our Hertfordshire coverage runs to 381 places, and Codicote is one of them. London is in our area too, around 25 miles away.
We cover every part of SG4 for grease filter exchange and the streets around it. Grease filter exchange is available to premises on High Street, Baker's Lane and The Green and the roads around them. Close by, we work in Codicote Bottom (1 mile west), Driver's End (1 mile north), Nup End Green (1 mile north-east), Pottersheath (1 mile east) and Ayot St Lawrence (1 mile south-west). Further out, we also cover Watford (15 miles south-west), Hemel Hempstead (12 miles south-west), Stevenage (5 miles north-east), St Albans (8 miles south-west), Welwyn Garden City (4 miles south-east) and Harpenden (5 miles south-west).
What’s near Codicote
We work in commercial kitchens and buildings around The Goat Public House, Monk's Walk School and Danesbury Park, among other places. Codicote’s nearest station is Knebworth station, roughly 2.4 miles north-east of the centre. Nearby you will also find Howard Centre (3.6 miles south) and Queen Elizabeth II Hospital (5 miles south-east). Green spaces nearby include Mardley Heath.
What your team can do, and what needs us
Staff cleaning does not replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
Day-to-day cleaning is something your team can do: wiping down canopy surfaces, cleaning filters and keeping a simple log. What they cannot safely do is clean inside the ductwork, the fan or the risers, and that’s where we come in.
Honest limits
We’ll always give you a straight diagnosis, so here’s what grease filter exchange will not do:
- A canopy too small for the cooking beneath it
- Grease behind the filters that a swap can’t remove
- Extraction problems caused by the fan rather than the filters
If you’re not sure, just give us a ring on 0345 646 2711 or use the quote form and we will give you a straight answer.
What the work covers
- School and hospital kitchens
- Wall canopies
- Mesh filters
- Restaurants and pubs
- Baffle filters
- Island canopies
Why act early in Codicote
Some kitchens in Codicote wash filters themselves to save the cost of a service, and that can work if it’s done thoroughly and on time. Where it slips, an exchange service takes the job off staff. Systems on quieter sites still build up dirt and wear, just more slowly.
Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Ask for a fixed quote and we’ll go through it with you.
Why choose Duct Doctor in Codicote
- Fully insured
- Ventilation hygiene specialists since 2009
- Out-of-hours work and a 24/7 emergency line
- Accredited under CHAS and SafeContractor, with ISO 9001
Take a look at how cleaning jobs are priced and how to check a contractor.
Multi-site and managed buildings
Running several sites is easier with one contractor. We cover South East England and London, so visits at different addresses can be planned together and kept on a regular cycle.
We also work for facilities teams across offices, schools and healthcare across Hertfordshire. Work can be phased by floor, building or site around the people who use them.
FAQs for Codicote
Can you work in Codicote outside opening hours?
Yes, we can come after you close and finish before you open. That way a site in Codicote does not have to lose a day’s trading. Let us know the hours you are closed and we’ll book within them.
Do you clean school canteen extracts around Codicote out of term?
Yes, and it’s the easiest time to do it. Food Standards Agency records list about 2 schools, colleges and universities with registered kitchens within about a mile and a half of Codicote. Just ring 0345 646 2711 or drop us a line with your term dates and we’ll plan around them.
What should go in our maintenance log?
Anything that proves the system is maintained: our reports and pictures, any certificates and your in-house logs. One maintenance log per site keeps it simple.
Does the law say we must follow TR19?
No. TR19® is BESA’s specification, not legislation. The law is the Regulatory Reform (Fire Safety) Order 2005, which makes the responsible person assess and reduce fire risk, and cleaning to TR19® is the recognised way to show grease is under control.
How much notice do you need?
For planned work, earlier is better, particularly if your next visit is nearly due. Emergencies are different, because our line is open 24/7.
Who is responsible for fire safety on the premises?
Under the Regulatory Reform (Fire Safety) Order 2005, it’s the responsible person: normally the employer or whoever controls the premises. Landlords, facilities managers and managing agents can also hold responsibility.
Is there a survey before the work?
Yes. Photos often do the job, and larger or hidden systems get a visit.
What does grease filter exchange cost?
We price it on the number of filters and the visit frequency. Send us details or pictures and we’ll quote, typically within one working day.
Aftercare tips
No system stays clean for ever, but care slows the build-up. A few tips:
- Tell us if a filter is bent or damaged
- Always run the extract while cooking
- Keep filter exchange and TR19 cleaning on the same plan
- Mention it if the kitchen gets busier
If the plenum behind the filters looks greasy, we say so. That might mean bringing a TR19® clean forward and we can book that in.
If cooking has stepped up, the filter schedule should too. Adjusting the schedule now prevents a build-up behind the canopy.
Towns and villages near Codicote
Also in Codicote
How it works
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. In a smaller place like Codicote, parking is rarely the issue, but tell us about gates, roof access and opening hours.
- We start by noting how many filters you have and what type they are.
- A change schedule is agreed to match the kitchen’s cooking hours.
- On each visit, the dirty filters come out of the canopy.
- Clean filters go straight back in, seated properly with no gaps.
- Anything we notice, such as bent filters or a dirty plenum, is pointed out.
Preparing for the visit
- Name a contact who can let us in at the agreed time
- Mention any locked doors, roof access or ceiling voids
- Mention any parking or loading restrictions
Get a fixed 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. Then we send a fixed price so you know the cost before we start.