Hertfordshire · Grease filter exchange
Grease Filter Exchange in Great Wymondley
Grease filter exchange for businesses, landlords and public buildings in Great Wymondley. CHAS, SafeContractor and ISO 9001, and fully insured.
- Bent or damaged filters that don’t sit properly
- Staff short of time to wash filters
- Grease dripping from the canopy
What grease filter exchange looks like in Great Wymondley
Food Standards Agency records list about 9 restaurants, cafés and canteens and about 6 takeaways and sandwich shops within 1.5 miles or so of the middle of Great Wymondley. Clogged filters slow the airflow, and busy kitchens like these clog them fast. Environmental health officers from North Hertfordshire council inspect food businesses in Great Wymondley. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. A TR19® certificate and photo report after each clean gives you a record to show an inspector. Great Wymondley sits within the area of Hertfordshire Fire and Rescue Service. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order.
If you run a church or community hall kitchen, near Church of St Mary the Virgin or elsewhere in Great Wymondley, its extract still collects grease from every lunch and event. Healthcare kitchens, like those at hospitals such as Lister Hospital (about 1.6 miles south-east), often cook for long hours, which puts them in BESA’s heavier-use bands.
Great Wymondley is about 2 miles east of Hitchin, in Hertfordshire. We carry out grease filter exchange for businesses, landlords and public buildings in Great Wymondley and the rest of Hertfordshire. We cover 381 places across Hertfordshire, from busy centres to quieter spots. Milton Keynes is in our area too, about 24 miles from Great Wymondley.
We work across SG4 for grease filter exchange and the roads nearby. Whether your site is on Graveley Road, Hitchin Road and Arch Road or anywhere close by, our technicians can take on the work. Neighbouring places we cover for grease filter exchange include Little Wymondley (1 mile south), Poets Estate (1 mile north-west), Graveley (1 mile south-east), Titmore Green (1 mile south) and Willian (1 mile north-east). We also work in nearby towns such as Stevenage (3 miles south-east), St Albans (14 miles south), Welwyn Garden City (10 miles south), Harpenden (10 miles south-west), Hatfield (12 miles south) and Hertford (12 miles south-east).
What’s near Great Wymondley
Locally, jobs take us to businesses close to Hitchin Girls' School, The Green Man pub and Kingshott School. The closest station to Great Wymondley is Hitchin station, roughly 1.4 miles north-west of the centre. Other landmarks nearby include North Hertfordshire Museum (2 miles west) and Lister Hospital (1.6 miles south-east). For a walk, there’s Purwell Ninesprings.
Grease filter exchange for kitchens and businesses in Great Wymondley
Filter exchange sits between full TR19® cleans. Clean filters reduce the grease reaching the ducts though vapour still carries some grease past them. That is why the whole system still needs cleaning to TR19 at the right interval. Typical jobs include gaps where filters have been removed and grease collecting in the filter channels, on school and hospital kitchens, island canopies and restaurants and pubs.
Work in a small place like Great Wymondley starts with a call to agree access and timings, and the clean covers the whole system, as it would anywhere: canopy, filters, duct, fan and discharge, with a certificate and photo report at the end.
Think of the report as the system’s health record: a dated account with pictures of everything we did. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal and sits alongside the report.

- Location
- Great Wymondley (SG4)
- Wider area
- Hertfordshire
- Reporting
- Photo report after every visit
- Price
- A fixed price before we start
- When we work
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Reviewed
- 30 October 2026
What we are called out for in Great Wymondley
However long the kitchen cooks each day, the filters see every minute of it. A kitchen that cooks all day loads its filters quickly so changes need to come round sooner.
Clients normally contact us when they notice something like this:
- Filters left unwashed on busy weeks
- Blocked baffle filters
- Weak extraction at the canopy
- Missing filters in the filter bank
If you run catering at a historic house or estate in the area (Knebworth House is about 4.9 miles south), event kitchens in older buildings often have awkward duct runs that need planning.
What your quote should include
- Whether the quote shows VAT
- If they look at the system before pricing
- Whether the work can be done while the site is closed
- What records you’ll receive afterwards
Managing agents and facilities teams in Great Wymondley
Keeping records across a portfolio is half the battle. Each visit produces a dated report with photos, ready to show insurers, fire officers or EHOs.
Landlords, managing agents and facilities managers book us, not only the businesses that use the systems. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we can quote for the whole system.
Fixed quotes for grease filter exchange in Great Wymondley
Your quote is based on your site. We take into account:
- What state the system is in
- How big the system is
- Whether several sites go on one quote
- Parking and loading at the site
Putting the work off seldom saves money. Build-up, wear and faults tend to get worse, not better, and a neglected system can mean more work. If you are not sure what’s needed, ring 0345 646 2711, or send details by email and we will give you an honest view and a fixed quote.
Asking for a quote
Photos and a few facts are often enough to price the work. Send what you can of the following:
- When the site is open and when it’s quiet
- Any previous report or certificate
- Detail shots of panels, filters and grilles
- Photos showing the whole system and its surroundings
For grease filter exchange in Great Wymondley, phone us on 0345 646 2711 or drop us a line. Tell us what kind of premises it is and when it’s open, and send photos or your last report if you can. A fixed quote usually follows within one working day.
What grease filter exchange cannot fix
Before booking, it helps to know what’s not included:
- Smell complaints that need odour control equipment
- Extraction problems caused by the fan rather than the filters
- A canopy that doesn’t capture the vapour properly
If you’re not sure, just phone us on 0345 646 2711 or use the quote form and we’ll give you a straight answer.
What we work on in Great Wymondley
- School and hospital kitchens
- Island canopies
- Mesh filters
- Restaurants and pubs
- Wall canopies
- Baffle filters
Places near Great Wymondley
Also in Great Wymondley
Why deal with it now?
Changing filters on schedule costs far less disruption than a blocked extract. It’s one of the simplest parts of looking after the system, and one of the easiest to let slip. Rural sites cannot always move to another kitchen or room when something fails.
Every site is different, so each one gets its own fixed quote. The size of the job, how we reach it, its condition and the working hours all make a difference.
Why choose Duct Doctor in Great Wymondley
- Accredited under CHAS and SafeContractor, with ISO 9001
- Trading since 2009
- A single point of contact for sites across the South East and London
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Read how cleaning jobs are priced or how to check a contractor.
Staff cleaning versus specialist work
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.
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but hidden parts of the system still need specialist attention.
What happens on the day
A visit follows the same order every time: sheeting and protection first, isolate whatever needs isolating, do the work, tidy up and leave you the report. The visit itself takes a few minutes per canopy, longer for a large kitchen with several canopies. We agree a date with you, plan the drive to Great Wymondley and turn up when the site is quiet.
- We record the number, size and type of your filters.
- An exchange schedule is agreed to suit your cooking.
- The dirty set is lifted out.
- A clean set is fitted and checked for gaps.
- The dirty filters leave with us and the next visit is booked.
Before we arrive
- Agree a time when the area can be out of use
- Mention any locked doors, roof access or ceiling voids
- Dig out any earlier paperwork for the system
Ask for a quote
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, you get a fixed price before any work starts.
Related advice
FAQs for Great Wymondley
Which environmental health team covers Great Wymondley?
In Great Wymondley, it’s North Hertfordshire council that carries out food hygiene inspections. How often a business is inspected depends on the risk rating the council gives it, so it’s worth staying ready all year.
Who enforces fire safety at workplaces in Great Wymondley?
Fire safety enforcement in Great Wymondley is handled by Hertfordshire Fire and Rescue Service. Records of extract cleaning are a sensible thing to have ready if a fire safety officer carries out an audit.
Does a filter exchange replace TR19 cleaning?
It is not. The rest of the system still collects grease at the right interval.
What accreditations do you have?
We hold CHAS, SafeContractor and ISO 9001, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Can you come out in an emergency?
Yes. Our emergency line runs 24/7, for problems that cannot wait. Call us any time and explain what’s happened.
Are you insured?
Yes, we are fully insured. CHAS and SafeContractor accreditation sit alongside it for clients who vet their contractors.
Does the report say when we need you again?
Yes. The interval depends on how much the system is used and what we find, and we explain the reasoning on the report.
Can you give a price for filter changes?
It depends on the number and type of filters and how often they’re changed. We’ll give you a fixed quote, normally within one working day.