Hertfordshire · Grease filter exchange
Hemel Hempstead grease filter exchange
Need grease filter exchange in Hemel Hempstead? We diagnose first, fix the price and book the work around your hours, finishing with a written report and photos.
- Bent or damaged filters that do not sit properly
- Hand-washed filters that still look greasy
- Grease building up behind the canopy filters
What your team can do, and what needs us
Staff cleaning and specialist work aren’t the same thing. 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.
Day-to-day cleaning is something your team can do: wiping canopies, washing grease filters and recording it in a log. What they cannot safely do is clean inside the ductwork, the fan or the risers, and that is where we come in.
Grease filter exchange in Hemel Hempstead
Washing filters in the kitchen sink is messy and easily missed on a busy week. An exchange service means clean filters arrive and greasy ones leave, so the canopy is never left without filters. The work covers mesh filters, baffle filters and island canopies, and people most often call us about grease left in baffles after washing and grease filters clogged with grease.
Town-centre kitchens in a place like Hemel Hempstead often sit below flats or offices, and the extract can climb several storeys before it discharges. Vertical risers like that need access panels in the right places, and any section we cannot reach is recorded on the report.
Duct Doctor has been trading since 2009, and we’re a BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease. We also hold CHAS, SafeContractor and ISO 9001, and we carry full insurance.
- Place
- Hemel Hempstead (HP2, HP3, HP1)
- Region
- Hertfordshire
- Paperwork
- Report and pictures after the visit
- Price
- A fixed quote up front
- When we work
- Overnight and weekend work, 24/7 emergency callout
- Call
- 0345 646 2711
- Checked
- 30 October 2026
How the job changes from site to site
Busy restaurant and pub kitchens
High-output kitchens clog filters quickly. They often need the shortest exchange interval.
Canopy filter housings
We check that filters sit snugly in the housing at each visit since a gap is a route for grease.
Kitchen extracts in Hemel Hempstead
Food Standards Agency data counts about 108 restaurants, cafés and canteens and about 69 takeaways within about 1.5 miles of central Hemel Hempstead. Any of those kitchens with a canopy relies on its filters to catch grease before it reaches the duct. Hemel Hempstead is covered by 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 Hemel Hempstead, food businesses are inspected by environmental health officers from Dacorum council. An officer looking round a kitchen will see the canopy, and grease there is hard to miss. A TR19® certificate and photo report after each clean gives you a record to show an inspector.
Older buildings often hide long, awkward duct runs, and if you run a kitchen at a historic venue in the area (High Elms Manor is about 4.6 miles south-east), access may need planning. Healthcare kitchens, like those at hospitals such as Hemel Hempstead Hospital (about 0.5 miles west), often cook for long hours, which puts them in BESA’s heavier-use bands.
Hemel Hempstead is about 24 miles north-west of London, in Hertfordshire. From the centre of Hemel Hempstead to the outskirts, grease filter exchange is available to all kinds of commercial premises, from small sites to large estates. Hemel Hempstead is one of 381 towns, villages and districts in Hertfordshire we cover for commercial clients. You can also see our page for London, roughly 24 miles from Hemel Hempstead.
Our technicians cover all of the HP2, HP3 and HP1 postcode area for grease filter exchange and the roads nearby. We cover sites on The Queen's Square, High Street and Sun Square and nearby roads. You will find Hemel Hempstead on the A41 and A414, so it’s easy for us to get to for out-of-hours visits. We also cover the places around Hemel Hempstead: Grovehill (1 mile west), Woodhall Farm (1 mile west), Adeyfield (1 mile north-east), Highfield (1 mile north) and Bennetts End (1 mile south-east). Larger places within reach include Watford (7 miles south-east), St Albans (6 miles east), Welwyn Garden City (12 miles east), Harpenden (6 miles north-east), Hatfield (10 miles east) and Borehamwood (10 miles south-east). As one of the bigger places in Hertfordshire, Hemel Hempstead has commercial sites of every size, and we cover all of them for grease filter exchange.
What’s near Hemel Hempstead
Around Hemel Hempstead, our work takes us to kitchens and buildings near Gadebridge Park, The Full House and Adeyfield School and the streets around them. The nearest railway station is Apsley station, about 1.4 miles south. Well-known places in the area include Redbourn Museum (4 miles north-east) and Hemel Hempstead Hospital (0.5 miles west). The countryside around Hemel Hempstead includes Verulamium Lake and Long Deans.
What affects the quote in Hemel Hempstead
Your quote is based on your site. We take into account:
- The size of the system
- A single visit or a regular plan
- Access, including roofs, risers and ceiling voids
- Whether several sites go on one quote
What you pay reflects the actual work. That is why every job is surveyed first, and the price is agreed before any work starts.
What we need to know
To help us quote quickly, please include:
- Close-ups of filters, grilles, hatches or access panels
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- Your opening hours and when the area is out of use
- Photos showing the whole system and its surroundings
Quoting starts with a diagnosis, either from pictures and details you send or from a site visit. Then we send a fixed price, before any work starts.
How the visit works
Protection comes first: sheeting goes over floors and surfaces close to the work. After that, the system is made safe and the work begins. It takes less than an hour in most kitchens, and the area is cleaned down before we leave. Managed buildings in a place the size of Hemel Hempstead often have sign-in, permits-to-work and key holders, and the visit is planned around them.
- We look at the canopies and the condition of the filters.
- Any damaged or missing filters are noted.
- Greasy filters are swapped for clean ones.
- The filters are checked for fit before we go.
- Anything that needs attention, such as a greasy plenum, is pointed out.
How to prepare
- Let us know about parking and loading
- Make sure someone can let us in and lock up afterwards
- Move anything stored near the system
How to get a quote
Want a quote for grease filter exchange? Please call 0345 646 2711 or drop us a line and tell us about the site. We’ll talk you through the work and send you a fixed quote before you commit to anything.
Advice
When to call us in Hemel Hempstead
However long the kitchen cooks each day, the filters see every minute of it. Heavy daily use means fast build-up so changes need to come round sooner.
These are the problems we see most often:
- Gaps where filters have been removed
- Filter washing that keeps being missed
- Grease dripping from the canopy
- Blocked baffle filters
Bursars and site managers at schools such as Broadfield Academy tend to book extract cleaning for when the kitchen is empty.
What to look for in a quote
- What paperwork you get at the end
- When they can work, and whether that’s outside your opening hours
- Whether the figure could change on the day
- Whether they recommend a next date
Hemel Hempstead: your questions answered
Who is the fire and rescue service for Hemel Hempstead?
Hemel Hempstead is in the area of Hertfordshire Fire and Rescue Service. It’s worth keeping your fire risk assessment, TR19® certificates and photo reports together, ready to show.
Who carries out food hygiene inspections in Hemel Hempstead?
In Hemel Hempstead, it’s Dacorum council that carries out food hygiene inspections. An officer may look up into the canopy, so clean filters on the day and a recent certificate on file both help.
Do you offer emergency callouts?
Yes, any time. For anything urgent, such as a fan failure or damage after a fire, ring the 24/7 line, and we’ll advise on what to do next.
Which records should we keep?
Every certificate and report from each visit, kept together in your maintenance log, along with your own cleaning log. BESA advises that certificates record the date, location and technician.
What accreditations do you have?
Our accreditations are CHAS, SafeContractor and ISO 9001, alongside BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. The Vent Hygiene Elite scheme is run by BESCA and audited independently.
Will I get paperwork for my records?
Yes. Every visit ends with a written report and pictures, showing what was done, anything we couldn’t reach and when the next visit is due. Where the work is a TR19® Grease clean, there’s also a certificate issued through the BESCA Vent Hygiene Elite portal.
What’s the right interval for changing filters?
It depends on how much and what the kitchen cooks. Kitchens that fry and grill all day need changes more often than kitchens that cook less. We agree the interval with you.
Do you take the used filters away?
We take them away to be cleaned and your staff don’t have to deal with them. Clean filters go straight in.
Why act early in Hemel Hempstead
In Hemel Hempstead, as everywhere, a filter service is not a substitute for TR19 cleaning. But clean filters do help the system between cleans and the canopy and plenum stay cleaner. If an insurer or inspector asks when the work was last done, an up-to-date certificate answers the question.
Whatever the type of site, the quote works the same way: how much there is, how we reach it, what state it’s in and when we can work. Ask for a fixed quote and we’ll explain each part.
Why us?
- Work around your opening hours, with 24/7 emergency cover
- In business since 2009
- CHAS, SafeContractor and ISO 9001
- Fixed quotes from a survey or photos
Towns and villages near Hemel Hempstead
Also in Hemel Hempstead
Multi-site and managed buildings
When the building owner and the occupier are different, it’s worth checking the lease for who maintains the systems. We’re happy to deal with either side and send the paperwork to whoever needs it.
Facilities teams in offices, schools and healthcare sites book us too in Hemel Hempstead and across Hertfordshire. Work can be phased by floor, building or site around the people who use them.