Hertfordshire · Grease filter exchange
Hudnall grease filter exchange
Grease filter exchange across Hudnall and nearby, booked around your opening hours and finished with a written report and pictures.
- Drips falling from the filters onto equipment
- Weak extraction at the canopy
- Bent or damaged filters that don’t sit properly
Honest limits
We’ll always give you a straight diagnosis, so here’s what this work cannot put right:
- Greasy ducts and risers that a filter change will not reach
- A canopy that needs a proper clean
- A canopy too small for the cooking beneath it
Not sure which it is? You can call 0345 646 2711 or drop us a line and we will tell you honestly before you book.
What we work on in Hudnall
- Restaurants and pubs
- Mesh filters
- Baffle filters
- Island canopies
- Wall canopies
- School and hospital kitchens
About our grease filter exchange in Hudnall
We run grease filter exchange for all kinds of kitchens in Hudnall, whether there’s one canopy or many. We can come before or after service so nobody has to stop cooking. If you are dealing with grease filters clogged with grease and filters that come out of the sink still dirty, we can help, from island canopies, baffle filters and school and hospital kitchens onwards.
For a kitchen in or near Hudnall, 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.
We’ve been trading since 2009, as a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. CHAS, SafeContractor and ISO 9001 are in place too, and we’re fully insured.
- Where
- Hudnall (HP4)
- Wider area
- Hertfordshire
- Paperwork
- Report and pictures after the visit
- Price
- A fixed price before work begins
- When we work
- Out of hours as standard, 24/7 emergency line
- Telephone
- 0345 646 2711
- Reviewed
- 30 October 2026
Grease filter exchange around Hudnall
Hudnall 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 Hudnall, food businesses are inspected by environmental health officers from Dacorum council. They look at how clean the premises and equipment are, and the kitchen extract is part of that. Keeping each certificate and photo report on file helps show the extract is looked after.
A hospital like Hemel Hempstead Hospital, about 5.1 miles south-east, is the kind of site where a kitchen may cook for patients, staff and visitors all day.
Hudnall is about 3 miles north of Berkhamsted, in Hertfordshire. Across the HP4 area, we cover grease filter exchange for commercial sites. Hudnall is one of 381 towns, villages and districts in Hertfordshire we cover for commercial clients. There’s also a page for Milton Keynes, roughly 18 miles from Hudnall.
Postcode districts we cover here for grease filter exchange: HP4. Close by, we work in Little Gaddesden (1 mile north-west), Hudnall Corner (1 mile east), Ringshall (1 mile north-west) and Dagnall (2 miles north). We also work in nearby towns such as Watford (12 miles south-east), Hemel Hempstead (5 miles south-east), St Albans (10 miles south-east), Welwyn Garden City (15 miles east), Harpenden (8 miles east) and Hitchin (15 miles north-east).
Local landmarks in Hudnall
For rail, the closest station is Berkhamsted station, roughly 3.2 miles south. Nearby you will also find Hemel Hempstead Hospital (5.1 miles south-east). Open spaces near Hudnall include Ivinghoe Beacon and Sallowsprings.
Nearby places to Hudnall
Other services in Hudnall
Common problems we fix in Hudnall
Washing filters by hand does not always get them clean. Grease hides in the folds of a baffle or the layers of a mesh and a sink wash rarely reaches it.
Keep an eye out for these warning signs:
- Bent or damaged filters that do not sit properly
- Weak extraction at the canopy
- Drips falling from the filters onto equipment
- Staff short of time to wash filters
For kitchens in and around Hudnall, the clean covers everything from the canopy to the discharge.
Before booking anyone
- What records you’ll receive afterwards
- Whether the work can be done while the site is closed
- Exactly which parts of the system are covered
- How areas they can’t reach will be recorded
Different parts, different methods
School, care home and staff kitchens
Even kitchens with fixed meal times build up grease, though often more slowly.
The plenum
With good filters, less grease ends up in the plenum, but it’s still cleaned during a full TR19 clean.
The process
There are three stages on the day: set-up, the treatment itself and the sign-off. Getting ready means protecting surfaces and switching off what needs to be off, while signing off means the written report and pictures. Most of the time goes on the work itself, which takes a few minutes per canopy, longer for a large kitchen with several canopies. Seeing the system in photos first means the trip to Hudnall can be planned properly.
- 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.
Preparing for the visit
- Plan for cooking equipment or plant to be off before we arrive
- Clear the space around the work
- Agree a time when the area can be out of use
How to get a quote
To help us quote: where the site is, what it is and its opening hours, a few pictures 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
How we price grease filter exchange
The quote reflects the site in front of us. We take into account:
- Working hours and out-of-hours timing
- The condition of the system
- The scale of the work
- Access, including roofs, risers and ceiling voids
The price reflects the work, not guesswork. That’s why we survey first, from pictures or on site, and the price is agreed before work begins.
Asking for a quote
A few details help us quote accurately. When you get in touch, it helps to send:
- How we’d reach plant on a roof or in a plant room
- Detail shots of panels, filters and grilles
- The paperwork from the last visit, if you have it
- A few general shots of the system
The quickest way to a quote is to send photos: 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.
Why deal with it now?
In Hudnall, as everywhere, a filter service isn’t a substitute for TR19 cleaning. They do help keep the system in better shape between cleans and the canopy and plenum stay cleaner. Planning a trip to Hudnall ahead is easier for everyone than a rushed one.
No two sites are the same, so we price each one individually. The size of the job, how we reach it, its condition and the working hours all make a difference.
Why choose Duct Doctor in Hudnall
- CHAS, SafeContractor and ISO 9001
- Fully insured
- Each visit written up, with photos
- Work around your opening hours, with 24/7 emergency cover
Take a look at what affects the cost and our accreditations and certificates.
Hudnall: your questions answered
Which fire and rescue service is responsible for Hudnall?
It’s Hertfordshire Fire and Rescue Service, which covers Hudnall. A recent cleaning certificate and a note of the next clean date show that grease in the extract is being managed.
Do you work overnight in Hudnall?
Yes. We work evenings, overnight and at weekends. The site is handed back ready to open. Just give us a ring on 0345 646 2711 or use the quote form with your opening times and we’ll plan around them.
Which kinds of sites do you work on?
Any commercial site with kitchens or ventilation, from a small pub to a hospital. We work with hotels, schools, care homes, offices, retail and leisure sites.
Where does the waste go?
We take it away when we go. While we work, it’s kept contained so the area stays clean.
Who is the responsible person?
Under the Regulatory Reform (Fire Safety) Order 2005, it’s the responsible person: often the employer, owner or occupier. Landlords, facilities managers and managing agents can also hold responsibility.
Can you clean our existing filters instead?
Yes, that is an option. We’ll check your filters first, as damaged ones may be better replaced.
Can damaged filters stay in the canopy?
We check every filter at each visit. We tell you about any that are damaged since a poor fit lets grease past.
Does a filter exchange replace TR19 cleaning?
No, the two work together. A TR19® clean deals with the whole system, with a certificate and photo report.
Staff cleaning versus specialist work
Logging matters as much as cleaning. A simple log of filter washes, wipe-downs and checks helps show that the system is managed between specialist visits, alongside our reports.
A few tasks are always specialist work: opening up ductwork, cleaning fans, drop testing fire dampers and measuring grease need training, the right equipment and safe access. That’s our job.