Surrey · Grease filter exchange
Grease Filter Exchange in Crondall
Grease filter exchange for businesses, landlords and public buildings in Crondall. BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease.
- Staff short of time to wash filters
- Hand-washed filters that still look greasy
- Drips falling from the filters onto equipment
Grease filter exchange in Crondall, done properly
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. If you are dealing with poor airflow through the filters and blocked baffle filters, we can put it right.
In a village or hamlet like Crondall, the kitchens that need extract cleaning are usually a pub, a school, a care home or a hall kitchen, wherever there is one. Every one of them still needs its extract kept clear of grease.
The report is your system’s health record: dated, with photos, and showing what was done. For TR19® Grease cleans, the certificate comes through the BESCA Vent Hygiene Elite portal, ready for your insurer.
- Location
- Crondall (GU10)
- Region
- Surrey
- Paperwork
- Report and pictures after the visit
- Price
- Fixed quote, normally within a working day
- When we work
- Nights, weekends or holidays to suit you
- Phone
- 0345 646 2711
- Updated
- 30 October 2026
When it’s something else
We’d rather tell you now than book work that won’t help, so these are the things it won’t cover:
- Greasy ducts and risers that a filter change won’t reach
- Extraction problems caused by the fan rather than the filters
- Grease behind the filters that a swap can’t remove
Not sure which it is? You can call us on 0345 646 2711 or use the quote form and we’ll tell you honestly.
What the work covers
- School and hospital kitchens
- Restaurants and pubs
- Baffle filters
- Mesh filters
- Island canopies
- Wall canopies
What happens on the day
Night work is normal for us. A lot of visits happen overnight or at weekends, so a kitchen or building can carry on as usual the next day. On site, the work takes a few minutes per canopy, longer for a large kitchen with several canopies. Somewhere like Crondall, lanes, gates and parking are worth mentioning in advance.
- First, we check the canopies and the filters in them.
- Any damaged or missing filters are noted.
- 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.
How to prepare
- Agree a time when the area can be out of use
- Make sure equipment near the work can be switched off and left to cool
- Let us know how we reach the system, including roofs, risers and plant rooms
Get a fixed quote
Photos are enough for some jobs, while others need a look on site. Big or complicated sites, and systems that are hard to see in pictures, get a survey first. Either way, you get a fixed price before any work starts.
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Questions from Crondall
Who enforces fire safety at workplaces in Crondall?
Fire safety enforcement in Crondall is handled by Surrey Fire and Rescue Service. Records of extract cleaning are a sensible thing to have ready if a fire safety officer carries out an audit.
Do you clean school canteen extracts around Crondall out of term?
Yes, out-of-term visits are normal for schools. Food Standards Agency records list about 2 schools, colleges and universities with registered kitchens within about a mile and a half of Crondall. Booking early in the term gives the best choice of holiday dates.
Does the report say when we need you again?
Yes. How often depends on use and condition and the report sets out why.
How do you protect the area?
Protection goes down first: floor sheeting and covers over nearby surfaces and equipment. The area is left tidy, with our waste taken away.
Do you deal with bent or broken filters?
Each filter is looked at when we exchange. We tell you about any that are damaged, because gaps let grease into the plenum.
Are you accredited?
CHAS, SafeContractor, ISO 9001 and BESCA Vent Hygiene Elite membership, cleaning to BESA TR19® Grease. We are fully insured and have been trading since 2009.
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 says certificates should show the date, location and technician.
Do you work with multi-site operators?
Yes. Our area covers London and the South East, so we can schedule a run of sites as one programme. Each site gets its own report and pictures.
What the work involves, part by part
Baffle filters
In a baffle filter, the air zigzags through metal baffles. Grease drops out as it does.
The plenum
A greasy plenum is a sign filters have been left too long, or that a full clean is due.
Keeping the system healthy
Simple habits between visits make a real difference. We recommend:
- Tell us if the menu or opening hours change
- Report damaged filters so they can be replaced
- Look out for drips from the canopy
- Keep the canopy clear for exchange visits
There’s no waiting: the canopy is ready as soon as the clean set is fitted. The dirty set leaves with us to be cleaned.
Damaged filters leave gaps in the defence. Replacing them early protects the plenum and ductwork.
Common problems we fix in Crondall
Cooking vapour carries grease into the canopy. Much of it is trapped by the filters, and day by day they load up and airflow falls away.
Look out for these warning signs:
- Grease dripping from the canopy
- Weak extraction at the canopy
- Grease building up behind the canopy filters
- Bent or damaged filters that do not sit properly
Term dates shape school work: for a school like Crondall Primary School, an extract clean fits neatly into a half-term or summer break.
Questions to ask before booking
- If they look at the system before pricing
- Their accreditations, such as BESCA Vent Hygiene Elite, CHAS or SafeContractor
- Whether they’re fully insured
- Whether a written report and photos are included
What affects the quote in Crondall
Every site gets its own quote. This is what makes a difference:
- The condition we find in the survey
- Access, including roofs, risers and ceiling voids
- The size of the system
- Site requirements such as sign-in and permits
The price reflects the work, not guesswork. That is why every job is surveyed first, and the price is agreed before we start.
What to send for a quote
What to send for a quote:
- When the site is open and when it’s quiet
- Photos showing the whole system and its surroundings
- Where the plant sits or the system leaves the building, such as a roof or outside wall
- The postcode and the type of business
Getting a quote does not take long. Send a few details and photos, and we usually reply with a fixed quote within one working day. If we need to see the system first, we book a survey around your hours.
Leave it or put it right?
A filter exchange is a few minutes; a choked extract affects a whole service. Few maintenance jobs are as easy, and one of the easiest to let slip. If the system at a site near Crondall fails, there may be nowhere nearby to move to.
Several systems or sites on one quote can make for a more efficient booking. Tell us about everything you’d like looked at and we’ll price it together.
Why choose Duct Doctor in Crondall
- Evenings, overnight and weekends, plus 24/7 emergency callout
- Trading since 2009
- One number for every site across the South East and London
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
Places near Crondall
More services for Crondall
Crondall kitchens: local notes
It’s Hart council that sends environmental health officers to food businesses in Crondall. Extraction counts as kitchen equipment, so its condition can come up on the day. Before-and-after pictures from each clean are a simple way to show the extract is in hand. The fire and rescue service for Crondall is Surrey Fire and Rescue Service. Grease in a kitchen extract is a recognised fire risk, and the fire authority enforces the law on managing it in most commercial premises.
Where a hall near Church of All Saints, or anywhere in Crondall, hosts lunch clubs or events, its extract gathers grease just as a café’s does. Kitchens that cook twelve hours or more a day, as some healthcare kitchens do, fall into BESA’s three-monthly minimum; Fleet Community Hospital is the nearest hospital to Crondall, about 3.8 miles north.
Crondall is about 3 miles south of Fleet, in Surrey. We provide grease filter exchange for businesses, landlords and public buildings in Crondall and the rest of Surrey. Crondall is one of 395 places in Surrey where we work for commercial clients. You can also see our page for Guildford, roughly 12 miles from Crondall.
Here we cover the GU10 postcode area for grease filter exchange. Streets in the area include Church Street, The Borough and Glebe Road, and we cover them all for grease filter exchange. We also cover the places around Crondall: Redlands (1 mile north-east), Bowling Alley (1 mile north), Dora's Green (1 mile east), Warren Corner (1 mile east) and Mill Lane (1 mile north). Within a short drive, we also cover Guildford (12 miles east), Woking (14 miles north-east), Camberley (9 miles north-east), Farnham (3 miles south-east), Frimley (8 miles north-east) and Haslemere (12 miles south-east).
Local landmarks in Crondall
Typical jobs here are in premises near The Plume Of Feathers Public House and St Nicholas' School and the streets around them. Crondall’s nearest station is Farnham station, about 3.3 miles south-east of the centre. Well-known places in the area include Museum of Farnham (2.8 miles south-east) and Hart Shopping Centre (3.4 miles north). Open spaces near Crondall include Beacon Hill and Aunt's Pool.