Hertfordshire · Grease filter exchange
Lemsford grease filter exchange
Need grease filter exchange in Lemsford? We diagnose first, fix the price and book the work around your hours, finishing with a written report and photos.
- Filters left unwashed on busy weeks
- Damaged filters letting grease past
- Missing filters in the filter bank
Grease filter exchange for kitchens and businesses in Lemsford
Across Lemsford, our filter exchange suits restaurants, pubs, cafés, schools, care homes and other kitchens, from a single canopy to several. Visits can be timed around your service so nobody has to stop cooking. The work covers island canopies, school and hospital kitchens and wall canopies, and people most often call us about drips falling from the filters onto equipment and grease collecting in the filter channels.
For a kitchen in or near Lemsford, the visit is planned around opening hours and the journey, and the clean covers the whole system, as it would anywhere: canopy to discharge, then a TR19® certificate and a photo report.
It’s worth checking any contractor’s accreditations. We are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease, and we hold CHAS, SafeContractor and ISO 9001, with full insurance on top.
- Place
- Lemsford (AL8)
- Wider area
- Hertfordshire
- Records
- Written report with photos
- Quote
- A fixed price before we start
- When we work
- Nights, weekends or holidays to suit you
- Telephone
- 0345 646 2711
- Page updated
- 30 October 2026
Aftercare tips
Once we’ve finished, these simple steps help:
- Do not refit a filter that’s bent
- Let us know if your cooking hours increase
- Make sure no filter is left out
- Never cook with the extract switched off
If the plenum behind the filters looks greasy, we say so. It can be a sign that a full TR19® clean is due and we can book that in.
Filters that are left too long stop protecting the system. A regular cycle keeps the rest of the system cleaner between full cleans.
Do you need grease filter exchange in Lemsford?
Repeated removal and washing takes its toll on filters. A bent filter doesn’t seat properly, leaving gaps for grease to slip through.
Common reasons sites call us include:
- Filters that leave gaps in the canopy
- Grease dripping from the canopy
- Blocked baffle filters
- Gaps where filters have been removed
If your kitchen is in a listed or historic building, like the houses around Lemsford (Digswell House is about 1.9 miles north-east), fitting access panels needs care.
What to look for in a quote
- Whether inaccessible sections are listed on the report
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- Whether the price is fixed
- What’s included in the scope, part by part
What affects the quote in Lemsford
There’s no set price list, because sites vary so much. The quote depends on:
- When the work can happen, such as evenings, overnight or weekends
- Access, including roofs, risers and ceiling voids
- The condition of the system
- Parking and loading at the site
The price reflects the work, not guesswork. That’s why we survey first, from photos or on site, and why the quote is fixed before we start.
What to send for a quote
To speed up the quote, please include:
- When the site is open and when it’s quiet
- Photos showing the whole system and its surroundings
- Your last certificate, test record or report
- Close-ups of filters, grilles, hatches or access panels
Photos are the quickest way to a quote: the system from a couple of angles, plus any access panels or hatches. Add the site type and your opening hours, and we can price many jobs without a visit.
What staff can safely do
Keep a record of what your team does. A dated log of in-house cleaning and checks shows an inspector that the system is looked after between visits, alongside our reports.
Good housekeeping makes our visits easier, not unnecessary. Regular in-house cleaning slows the build-up, but the parts you can’t see still need a specialist at the right interval.
What a clean won’t put right
An honest diagnosis matters more to us than a booking, so here’s what this work can’t put right:
- Grease already built up in the ductwork, which needs a full TR19 clean
- Odours from the discharge that filters won’t stop
- Grease behind the filters that a swap can’t remove
If you’re not sure, just call us on 0345 646 2711 or drop us a line and we’ll give you a straight answer before booking.
What we work on in Lemsford
- Restaurants and pubs
- Wall canopies
- Baffle filters
- Mesh filters
- School and hospital kitchens
- Island canopies
The process
We turn up at the time agreed with you, which is often after service, overnight or at a weekend. Anything that needs to be off for the work is switched off and left to cool first, and the area around the work is covered and protected. On site, it takes a few minutes per canopy, longer for a large kitchen with several canopies. Rural roads and tight entrances are worth telling us about before a visit to Lemsford.
- We record the number, size and type of your filters.
- We set the interval with you.
- The dirty set is lifted out.
- Clean filters go in and we check they sit snugly.
- The dirty filters leave with us and the next visit is booked.
How to prepare
- Arrange a key holder or contact on site
- Mention any locked doors, roof access or ceiling voids
- Let us know about parking and loading
Get a fixed quote
To help us quote: where the site is, what it is and its opening hours, photos of the system and the last certificate or report, if there is one. Once you have those, give us a ring on 0345 646 2711, or send details by email.
Read more
Questions from Lemsford
Do you work in villages like Lemsford?
Yes, we work in villages as well as towns, and Lemsford is covered. The journey is planned ahead, so a few details about the route help.
Can you clean school kitchen extracts in Lemsford during the holidays?
Yes. The holidays are the usual time for school work. There are about 12 schools, colleges and universities on the FSA’s food hygiene register within about 1.5 miles of Lemsford. You can ring 0345 646 2711, or send details by email with the dates the site is empty.
Which sectors do you work in?
All kinds of commercial and public premises: kitchens, offices, schools, healthcare, retail, leisure and food production. We fit the work around how the site operates.
How long does the visit take?
We will confirm the time with your quote. For a typical site, it takes less than an hour in most kitchens.
Where does the waste go?
Waste is contained during the work and removed when we leave, including grease, debris and dirty water. None of it is left on site.
Is there a cleaning option for the filters we have?
Yes, that’s an option. We will check your filters first, as damaged ones may be better replaced.
Are you accredited?
Our accreditations are CHAS, SafeContractor and ISO 9001, and we are a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Do we need to close the kitchen while filters are changed?
A filter change is quick and can be timed around service. Cooking shouldn’t happen with the filters out, so we swap them in one go.
Grease, kitchens and Lemsford
The FSA’s food hygiene register shows about 31 restaurants, cafés and works canteens and about 7 takeaways in and around Lemsford, up to about a mile and a half out. Clogged filters slow the airflow, and busy kitchens like these clog them fast. Food hygiene inspections in Lemsford are the job of Welwyn Hatfield council’s environmental health team. A greasy canopy or dripping filters are the sort of thing an inspection can pick up. Our report lists what was cleaned and when, which is useful to have ready. Hertfordshire Fire and Rescue Service covers Lemsford. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises.
For schools such as Applecroft School, kitchen extract cleaning is usually booked for the holidays, when the canteen is closed. Church and community hall kitchens, near Church of St John the Evangelist or anywhere around Lemsford, are easy to forget, but their extracts collect grease like any other.
Lemsford is about 2 miles west of Welwyn Garden City, in Hertfordshire. Lemsford 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. Our area takes in 381 places across Hertfordshire, from busy centres to quieter spots. For sites nearby, see our London page (21 miles or so).
Here we cover the AL8 postcode area for grease filter exchange. Grease filter exchange is available to premises on Mill Close, Lemsford Village and Great North Road and nearby roads. Close by, we work in Stanborough (1 mile south), Coleman Green (2 miles west), Cooper's Green (2 miles south-west), Hatfield (2 miles south) and Smallford (3 miles south-west). Larger places within reach include Watford (12 miles south-west), Hemel Hempstead (10 miles west), Stevenage (8 miles north), St Albans (5 miles south-west), Harpenden (5 miles west) and Hitchin (11 miles north).
Landmarks near Lemsford
Typical jobs here are in premises near Stanborough Park, Stanborough School and The Sun Inn. For rail, the closest station is Welwyn Garden City station, about 1.2 miles east. Nearby you will also find Queen Elizabeth II Hospital (2.1 miles south-east) and The Bunker at Hatfield Police Station (2.1 miles south). For a walk, there’s Lemsford Springs.
Towns and villages near Lemsford
More services for Lemsford
Leave it or put it right?
For any kitchen in Lemsford, filters can’t stand in for a full TR19 clean. They do help keep the system in better shape between cleans, and that shows when the next clean comes round. Systems in rural buildings are often out of sight and out of mind.
Working hours, access and the scale of the site all affect the cost. Each of those is built into the quote, and the price is fixed before we start.
Why Lemsford businesses choose us
- Every visit written up, with pictures
- Every job surveyed first
- CHAS and SafeContractor accredited, with ISO 9001
- Ventilation hygiene specialists since 2009
Take a look at our cost guide and our accreditations and certificates.