Hertfordshire · Grease filter exchange
Oxhey grease filter exchange
One call covers a scheduled grease filter exchange, swapping dirty canopy filters for clean ones in Oxhey, from survey to sign-off. CHAS and SafeContractor accredited, ISO 9001 and fully insured.
- Smoke and heat lingering under the hood
- Grease collecting in the filter channels
- Blocked baffle filters
What happens on the day
Your trading hours come first. We book the visit for a time the area is closed, whether that’s an evening, overnight or a weekend. Once we’re in, the area is sheeted and anything that has to be off is turned off and cooled, and the work takes a few minutes per canopy, longer for a large kitchen with several canopies. For a place like Oxhey, we load the van from the survey notes so the work can be done in one visit where possible.
- 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.
- Clean filters go in and we check they sit snugly.
- The dirty filters leave with us and the next visit is booked.
Getting ready for the visit
- Mention any locked doors, roof access or ceiling voids
- Arrange a key holder or contact on site
- Let us know about parking and loading
Get a fixed quote
We do not publish a price list, because every site is different. Instead, we look at your site first, from photos or a survey, then send a fixed quote. To start, call us on 0345 646 2711, or send details by email.
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Grease filter exchange in Oxhey, done properly
A clean set of filters is a simple, regular dose of prevention. It keeps airflow up and grease down between full cleans and takes a messy task off your team. Full TR19 cleaning still comes at the right interval, with a certificate. The work covers restaurants and pubs, island canopies and baffle filters, and people most often call us about a greasy plenum behind the filters and grease filters clogged with grease.
Kitchens around a place like Oxhey are often in older buildings or single-storey extensions, with the duct running through a roof space or up an outside wall. Flat runs collect grease and need proper access to clean.
Duct Doctor has been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Where
- Oxhey (WD23, WD19, WD17)
- Wider area
- Hertfordshire
- Records
- Photo report after every visit
- Quote
- A fixed price before any work starts
- Hours
- Overnight and weekend work, 24/7 emergency callout
- Telephone
- 0345 646 2711
- Reviewed
- 30 October 2026
Nearby places to Oxhey
Other services in Oxhey
Do you need grease filter exchange in Oxhey?
What a kitchen cooks affects how fast filters clog. Fryers, grills and woks load filters faster than ovens and steamers so no single schedule suits every kitchen.
The symptoms we are asked about most include:
- Missing filters in the filter bank
- Grease filters clogged with grease
- Filter washing that keeps being missed
- Grease building up behind the canopy filters
If you run catering at a healthcare site, such as a hospital like Watford General Hospital about 1.2 miles west, the extract may need cleaning more often than a part-time kitchen.
Questions to ask before booking
- Proof of insurance
- Which accreditations they hold, and whether you can check them
- How they set the interval to the next visit
- When they can work, and whether that’s outside your opening hours
Aftercare tips
To keep the system working properly between visits:
- Make sure no filter is left out
- Wipe the outside of the canopy as part of daily cleaning
- Keep the canopy clear for exchange visits
- Let us know if your cooking hours increase
Nothing changes for your staff, except one less greasy job. Make sure we can reach the canopy on exchange day and tell us if service times change.
A kitchen that’s getting busier needs its filters changed more often. Adjusting the schedule now prevents a build-up in the ducts.
How the job changes from site to site
Mesh filters
Grease lodges deep in the layers of a mesh filter, which makes hand-washing hard work.
Canopy filter housings
The filter housing holds each filter at an angle in the canopy. A damaged housing leaves gaps.
Staff cleaning versus specialist work
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks shows an inspector that the system is looked after between visits, next to our reports.
In-house cleaning and specialist cleaning do different jobs. Wiping filters daily and washing them weekly keeps the visible parts in order, but they do not reach the grease that builds up further in. Reaching it takes a specialist with the right equipment.
Grease filter exchange in Oxhey: the local picture
There are about 123 restaurants, cafés and canteens and about 35 sandwich bars and takeaways within 1.5 miles or so of the middle of Oxhey, according to the Food Standards Agency’s register. Swapping filters on a schedule keeps kitchens like these drawing air properly. Oxhey sits within the area of Hertfordshire Fire and Rescue Service. Fire and rescue authorities enforce the Fire Safety Order in most non-domestic premises, and in a kitchen that fire risk includes the grease in the extract. In Oxhey, food businesses are inspected by environmental health officers from Hertsmere council. Extraction counts as kitchen equipment, so its condition can come up on the day. Our report lists what was cleaned and when, which is useful to have ready.
School kitchens, at schools like Bushey Manor Junior School for example, are usually cleaned in the holidays so no lunches are lost. Where a hall near Church of St James, or anywhere in Oxhey, hosts lunch clubs or events, its extract gathers grease just as a café’s does.
Oxhey is about 1 mile west of Bushey, in Hertfordshire. Across the WD23 area, we cover grease filter exchange for commercial sites. We cover 381 places across Hertfordshire, large and small. London is in our area too, around 16 miles away.
We work across the WD23, WD19 and WD17 postcode area for grease filter exchange and the roads nearby. Local streets include Cow Lane, Vale Road and Park Road, all of which we cover for grease filter exchange. Oxhey sits on or near the A4008, which makes travel easy for evening and night visits. Neighbouring places we cover for grease filter exchange include Watford Heath (1 mile south-west), Bushey (1 mile east), Carpenders Park (1 mile south), Watford (2 miles north-west) and Bushey Heath (2 miles south-east). Larger places within reach include Hemel Hempstead (8 miles north-west), St Albans (8 miles north), Welwyn Garden City (13 miles north-east), Harpenden (12 miles north), Cheshunt (15 miles east) and Hatfield (10 miles north-east).
Local landmarks in Oxhey
We work in commercial kitchens and buildings around St. Hilda's School, Oxhey Park and The Bushey Academy and the streets around them. There’s a railway station in Oxhey itself: Bushey station. Nearby you’ll also find Hertfordshire Fire Brigade Museum (0.7 miles north-west) and Harlequin Centre (1 mile north-west). For a walk, there’s Harrow Weald Common.
Questions from Oxhey
Can you come to Oxhey after we close?
Yes, evening, overnight and weekend work is normal for us. It means the site in Oxhey keeps running as normal. Tell us your opening hours when you ask for a quote.
Who inspects food businesses in Oxhey?
In Oxhey, it’s Hertsmere council that carries out food hygiene inspections. Ratings are published by the Food Standards Agency, so a clean extract and good records are worth keeping up.
What accreditations do you have?
Duct Doctor is a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
How far ahead should we book?
Earlier is better, particularly for night and weekend visits. Quotes typically come back within one working day, and emergencies are covered by our 24/7 line.
How do you keep the site clean during the work?
We start with protection: sheeting over floors, worktops and anything close to the work. We tidy up and take our waste away before we leave.
Will you tell us when the next visit is due?
Yes. Every report includes a recommended date for the next visit, based on what we found and how the system is used.
Will we have to shut during the visit?
Not usually. We work when the area is out of use, such as evenings, overnight, early mornings or weekends, so you keep your normal hours.
Can you give a price for filter changes?
Filters, canopies and how often you need visits all affect the price. Tell us what you have and we will come back with a fixed quote, usually within one working day.
What affects the cost of grease filter exchange
We don’t publish a price list, because no two systems are the same. What we look at:
- How easy every part is to reach
- Where the site is and how we reach it
- One-off work versus a regular cycle
- What state the system is in
You won’t find a price list here, because the cost depends on the site in front of us. Call for a fixed quote, and we will talk you through it.
Asking for a quote
When you call or email, it’s useful to have:
- Anything you’ve noticed, such as smells, noise, drips or poor airflow
- A few general shots of the system
- Detail shots of panels, filters and grilles
- How we’d reach plant on a roof or in a plant room
Photos are the quickest way to a quote: the system from a couple of angles, plus any access panels or hatches. Tell us what kind of site it is and when it’s open, and many jobs can be priced from that alone.
Multi-site and managed buildings
Multi-site operators often want one contractor and one number. We work across London and the South East, so visits at different addresses can be planned together and kept on a regular cycle.
Managing agents often deal with us directly. Send the address, what’s needed and how access works, and we’ll send a fixed quote.