Hertfordshire · Grease filter exchange
Letchworth Garden City grease filter exchange
Our technicians work in Letchworth Garden City on grease filter exchange. Fixed quotes, work around your opening hours and photo reports as standard.
- Grease filters clogged with grease
- Grease dripping from the canopy
- Filters that leave gaps in the canopy
How we handle grease filter exchange in Letchworth Garden City
An exchange visit in Letchworth Garden City does not take long. We lift out the dirty filters and fit a clean set and make sure there are no gaps between them. Anything that needs attention is pointed out. Common call-outs are for grease filters clogged with grease and gaps where filters have been removed, on school and hospital kitchens, restaurants and pubs and mesh filters.
Around a town like Letchworth Garden City, extract cleaning typically means a restaurant, pub, takeaway or the kitchen of a school or care home. Whatever the kitchen, the canopy, filters, duct and fan all collect grease.
It’s worth checking any contractor’s accreditations. We’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, and we are fully insured.
- Location
- Letchworth Garden City (SG6, SG7)
- Region
- Hertfordshire
- Reporting
- Report and photos after the visit
- Quote
- A fixed price before work begins
- Working hours
- Out of hours as standard, 24/7 emergency line
- Phone
- 0345 646 2711
- Checked
- 30 October 2026
Part by part
The plenum
A greasy plenum is a sign filters have been left too long or that the next TR19 clean is due.
Baffle filters
In a baffle filter, the air zigzags through metal baffles. Grease drops out as it does.
Aftercare tips
Think of this as the after-treatment advice, short and simple:
- Look out for drips from the canopy
- Tell us if the menu or opening hours change
- Always run the extract while cooking
- Make sure we can reach the canopy on exchange day
There’s no waiting: the canopy is ready as soon as the clean set is fitted. We take the greasy filters with us to be cleaned.
If cooking has stepped up, the filter schedule should too. Adjusting the schedule now prevents a build-up in the ducts.
Nearby places to Letchworth Garden City
What else we do in Letchworth Garden City
When it’s something else
We’d rather tell you now than book work that will not help, so these are the things it won’t cover:
- Grease behind the filters that a swap can’t remove
- Cooking smells reaching neighbours, which need odour control
- A canopy that doesn’t capture the vapour properly
If in doubt, ring 0345 646 2711 or send us an email and we’ll say what we think.
What the work covers
- Wall canopies
- School and hospital kitchens
- Mesh filters
- Restaurants and pubs
- Island canopies
- Baffle filters
What happens on the day
At the end of the visit, someone from your team can look over the work with us. We point out anything that couldn’t be reached or needs a follow-up, and it goes on the report too. The visit takes anything from a few minutes to an hour or so, depending on the number of filters. A closed day, an evening or an early start: whichever suits your site in Letchworth Garden City, we’ll book around it.
- 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.
- We tell you if the plenum or canopy needs a clean.
How to prepare
- Let us know how we reach the system, including roofs, risers and plant rooms
- Have your last certificate or report to hand
- Let us know about permits to work or site inductions
How to get a quote
We do not publish a price list, because no two systems are the same. We look at your system first, from photos or on a visit, and then send you a fixed quote. To get going, call us on 0345 646 2711 or email us.
Advice
FAQs for Letchworth Garden City
Which fire and rescue service is responsible for Letchworth Garden City?
That’s Hertfordshire Fire and Rescue Service. If a fire safety officer visits a commercial kitchen, they may ask about the fire risk assessment and how the extract is kept clean.
Do you work at weekends in Letchworth Garden City?
Yes, evening, overnight and weekend work is normal for us. It means the site in Letchworth Garden City keeps running as normal. Just phone us on 0345 646 2711 or email us with your opening times and we’ll plan around them.
Do you work with multi-site operators?
Yes. You deal with one contact for every site across London and the South East, and visits can be set on a regular cycle.
Where do the greasy filters go?
We do. Used filters go with us to be cleaned while a clean set goes in.
Which records should we keep?
Every certificate and report from each visit, kept together in your maintenance log with your in-house cleaning records. BESA advises that certificates record the date, location and technician.
How long will you be on site?
It depends on the size of the system, but for many sites it takes a short visit, depending on how many filters the canopies hold. We will give you a better idea when we quote.
How do you protect the area?
Floors and surfaces near the work are sheeted before any work starts, and waste is contained as we go. At the end, the area is cleaned down.
Can you give a price for filter changes?
It depends on the number and type of filters and how often they’re changed. We will send you a fixed quote once we know your canopies.
Why deal with it now?
Changing filters on schedule costs far less disruption than a blocked extract. Few maintenance jobs are as easy and few are as easy to forget. With a fire risk assessment or inspection due, getting the work done first puts you on the front foot.
The cost depends on how big the system is, the condition it’s in and access to every part of it. You get a fixed price before any work starts, so you know where you stand.
Why choose Duct Doctor in Letchworth Garden City
- A single point of contact for sites across the South East and London
- CHAS and SafeContractor accredited, with ISO 9001
- Out-of-hours work and a 24/7 emergency line
- Full insurance on every job
Take a look at what affects the cost or our accreditations and certificates.
Staff cleaning versus specialist work
In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but grease that has passed the filters is out of reach. That part needs specialist access and equipment.
A few tasks are always specialist work: entering ducts, working on fans, testing dampers and taking grease readings need training, the right equipment and safe access. That is our job.
What affects the cost of grease filter exchange
The diagnosis comes before the price. The main factors are:
- Any permits to work or inductions
- Whether several sites go on one quote
- Access, including roofs, risers and ceiling voids
- One-off work versus a regular cycle
Putting the work off seldom saves money. Build-up, wear and faults tend to get worse, not better, which can make the next visit longer. If you are unsure, phone us on 0345 646 2711 or drop us a line and we’ll give you an honest view and a fixed quote.
What we need to know
There’s no need for technical detail. Just send:
- The times we could work without disrupting the site
- Photos showing the whole system and its surroundings
- Your last certificate, test record or report
- Detail shots of panels, filters and grilles
Quotes are quick. Call or email with a few details and you will usually have a fixed price within one working day. If we need to see the system first, we book a survey around your hours.
Letchworth Garden City kitchens: local notes
Food Standards Agency records list about 54 restaurants, cafés and works canteens and about 26 takeaways in and around Letchworth Garden City, up to about a mile and a half out. Where they cook under a canopy, the grease filters are the first line of defence and clog quickly. In Letchworth Garden City, food businesses are inspected by environmental health officers from North Hertfordshire council. Extraction counts as kitchen equipment, so its condition can come up on the day. A TR19® certificate and photo report after each clean gives you a record to show an inspector. The fire and rescue service for Letchworth Garden City is Hertfordshire Fire and Rescue Service. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order.
For kitchens close to Letchworth Garden City station, where the day often starts early and ends late, the extract can be cleaned overnight. School kitchens, at schools like Pixmore Junior School for example, are typically cleaned in the holidays so no lunches are lost. Volunteers running a hall kitchen near St Michael, or anywhere in Letchworth Garden City, may not know when the extract was last cleaned, and a grease test settles it.
Letchworth Garden City is about 5 miles north-west of Stevenage, in Hertfordshire. We provide grease filter exchange for commercial premises of every kind in Letchworth Garden City and the rest of Hertfordshire. Across Hertfordshire, we cover 381 places, Letchworth Garden City among them. We also work in Milton Keynes, about 23 miles from Letchworth Garden City.
We cover every part of the SG6 and SG7 postcode area for grease filter exchange and the streets around it. You’ll find streets such as Pix Road, Field Lane and Ridge Road, all of which we cover for grease filter exchange. With the A505 close by, Letchworth Garden City is easy for our technicians to reach for grease filter exchange. We also cover the places around Letchworth Garden City: Letchworth (1 mile east), Willian (1 mile south), Norton (1 mile north-east), Walsworth (2 miles south-west) and Ickleford (2 miles west). We also work in nearby towns such as Stevenage (5 miles south-east), Welwyn Garden City (13 miles south), Harpenden (12 miles south-west), Hitchin (3 miles south-west), Hatfield (15 miles south) and Hertford (14 miles south-east).
What’s near Letchworth Garden City
We work in commercial kitchens and buildings around Norton School, Three Magnets pub and Church of St Paul and the streets around them. Letchworth Garden City has its own railway station: Letchworth Garden City station. A little further out are Wymondley Castle (2.5 miles south) and Fairfield Hospital (1.8 miles north-west). Open spaces near Letchworth Garden City include Purwell Ninesprings.