Hertfordshire · Grease filter exchange

Grease filter exchange in Green End, Hertfordshire

Our technicians work in Green End on a scheduled grease filter exchange, swapping dirty canopy filters for clean ones. Out-of-hours visits, a fixed quote and a written report with photos as standard.

  • Filters so greasy the air can barely pass
  • Hand-washed filters that still look greasy
  • A canopy running with filters missing

Grease filter exchange near Green End

Grease filter exchange in Green End

We run grease filter exchange for all kinds of kitchens in Green End, from a single canopy to several. We can come before or after service, so cooking isn’t interrupted. If you’re dealing with drips falling from the filters onto equipment and grease building up behind the canopy filters, we can put it right, from wall canopies, mesh filters and baffle filters onwards.

For a kitchen in or near Green End, 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.

Nothing is signed off by word of mouth: a written report, dated and illustrated with pictures, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. Any parts we couldn’t reach are recorded on it too.

The Duct Doctor team standing beside their branded white and blue vans
Where
Green End (SG9)
Region
Hertfordshire
Records
Written report with pictures
Quote
A fixed quote up front
When we work
Evenings, overnight and weekends; 24/7 emergencies
Telephone
0345 646 2711
Last updated
30 October 2026

What a clean won’t put right

To be straight with you, there are a few things this work won’t fix:

  • A noisy or failed extract fan
  • Smell complaints that need odour control equipment
  • Grease already built up in the ductwork, which needs a full TR19 clean

If you are not sure, just ring 0345 646 2711 or send us an email and we will give you a straight answer.

Parts of the system we cover

  • Mesh filters
  • Wall canopies
  • School and hospital kitchens
  • Island canopies
  • Baffle filters
  • Restaurants and pubs

Managing agents and facilities teams in Green End

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.

When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We can quote either party and send the paperwork to whoever needs it.

Your questions about grease filter exchange in Green End

Can you get to a site in Green End?

Yes. Green End is within the area we cover across London and the South East. A survey first, from pictures or a visit, means we arrive with the right kit.

Which fire and rescue service is responsible for Green End?

That is Hertfordshire Fire and Rescue Service. TR19® is not law, but it’s the benchmark many fire officers and insurers look to when they ask how often the extract is cleaned.

How much notice do you need?

The more notice, the better, especially for out-of-hours work. Quotes normally come back within one working day, and there’s a 24/7 line for emergencies.

Can you give a price for filter changes?

We price it on the number of filters and the visit frequency. Send us details or photos and we’ll quote, usually within one working day.

Can we skip TR19 cleans if the filters are changed regularly?

No. Clean filters help keep grease down, but the ducts and plenum still need cleaning at the right interval.

What’s TR19?

TR19® is BESA’s specification for ventilation hygiene. TR19® Grease, a standalone specification since 2019, covers grease in kitchen extract systems, while TR19® Air covers other supply and extract ductwork.

What accreditations do you have?

We hold 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.

What happens to the dirty filters?

The greasy set leaves with us for cleaning and your staff do not have to deal with them. A clean set is fitted in their place.

The process

Night work is normal for us. Evenings, nights and weekends are when much of our work happens, so the site can open as normal afterwards. The visit itself takes a short visit, depending on how many filters the canopies hold. A quick note on how to find the site and where to park makes a visit to Green End run smoothly.

  1. We look at the canopies and the condition of the filters.
  2. We note any filters that are bent, damaged or missing.
  3. Greasy filters are swapped for clean ones.
  4. The filters are checked for fit before we go.
  5. We tell you if the plenum or canopy needs a clean.

Preparing for the visit

  • Have your last certificate or report to hand
  • Tell us the best time to work, such as after service or at a weekend
  • Make sure equipment near the work can be switched off and left to cool

How to get a quote

Photos are enough for some jobs, while others need a look on site. Larger sites, and anything hidden behind walls, ceilings or floors, are normally surveyed first. Either way, the quote is fixed before any work is booked.

Get a price

Advice

Grease filter exchange in Green End: the local picture

The fire and rescue service for Green End is Hertfordshire Fire and Rescue Service. The Fire Safety Order puts the duty on whoever runs a kitchen to control its fire risk, and a greasy duct is fuel. Green End is about 34 miles from central London, well within the area we cover across London and the South East. The visit is fixed around your opening hours, not ours.

Where a hall near Church of All Saints, or anywhere in Green End, hosts lunch clubs or events, its extract gathers grease just as a café’s does. School kitchens, at schools like Sandon Junior Mixed and Infant School for example, are typically cleaned in the holidays so no lunches are lost.

Green End is in Hertfordshire. Whether your site is in the middle of Green End or further out, we cover grease filter exchange for every kind of premises, from a single unit to a large public building. Across Hertfordshire, we cover 381 places, Green End among them. There’s also a page for Chelmsford, about 29 miles away.

Postcode districts we cover here for grease filter exchange: SG9. If your site is just outside Green End, we cover Roe Green (1 mile west), Sandon (1 mile north-west), Rushden (2 miles south-west), Buckland (2 miles east) and Chipping (2 miles south-east). We also work in nearby towns such as Stevenage (7 miles south-west), Bishop's Stortford (13 miles south-east), Welwyn Garden City (14 miles south), Hitchin (9 miles west), Hertford (13 miles south) and Letchworth (7 miles west).

Local landmarks in Green End

The nearest railway station is Ashwell & Morden station, roughly 3.6 miles north-west. A little further out are Clothall Castle (3.6 miles west). Not far away are Hawkins Wood.

Map of Green End © OpenStreetMap contributors

What staff can safely do

If your staff spot something between visits, such as dripping grease, a noisy fan, a smell or a filter that won’t come clean, it’s best reported rather than tackled in-house. We can diagnose it and quote.

Staff cleaning does not replace a specialist visit; it supports it. Regular in-house cleaning slows the build-up, but the parts you can’t see still need a specialist at the right interval.

What the work involves, part by part

The plenum

With good filters, less grease ends up in the plenum, but it’s still cleaned during a full TR19 clean.

Canopy filter housings

Filters sit in a housing or channel in the canopy. A damaged housing leaves gaps.

Fixed quotes for grease filter exchange in Green End

There’s no set price list, because sites vary so much. The quote depends on:

  • Whether it’s a one-off visit or part of a schedule
  • Site rules, permits and inductions
  • The number of sites or systems
  • Access, including roofs, risers and ceiling voids

Combining work into one visit or one programme often makes better use of the time. Tell us about everything you’d like looked at, and you’ll get one fixed quote.

What to send for a quote

The more you tell us, the more accurate the quote. With your enquiry, please include:

  • The postcode and the type of business
  • Problems your staff have spotted
  • Any previous report or certificate
  • When the site is open and when it’s quiet

The quickest way to a quote is to send pictures: wide shots of the system, close-ups of anything that worries you and how we’d get to it. Add the site type and your opening hours, and many jobs can be priced from that alone.

Aftercare tips

Good habits slow the build-up between visits. Our tips:

  • Make sure no filter is left out
  • Tell us if the menu or opening hours change
  • Keep canopy surfaces wiped down
  • Clear anything stored on or near the canopy

Between visits, check that every filter is still in place. A missing filter leaves a gap for grease, so let us know if one goes missing or gets damaged.

Damaged filters leave gaps in the defence. Replacing them early protects the plenum and ductwork.

BESCA Vent Hygiene EliteMember, cleaning to BESA TR19® Grease
CHAS · SafeContractorISO 9001 and fully insured
Certificate and photo reportWith every clean
24/7 emergency calloutEvenings, nights and weekends
Since 2009South East England and London