Surrey · Grease filter exchange
Grease filter exchange in Castle Green, Surrey
Looking for grease filter exchange in Castle Green? We survey first, send you a fixed quote and work around your opening hours, then sign off with a report and photos.
- Grease building up behind the canopy filters
- Filters so greasy the air can barely pass
- Filters that come out of the sink still dirty
Grease filter exchange for kitchens and businesses in Castle Green
Filter exchange sits between full TR19® cleans. Clean filters reduce the grease reaching the ducts though vapour still carries some grease past them. So the canopy, plenum and ducts still need their full TR19 clean. We are often asked to deal with filters that come out of the sink still dirty and weak extraction at the canopy, on wall canopies, restaurants and pubs and school and hospital kitchens.
For a kitchen in or near Castle Green, the visit is planned around opening hours and the journey, and the clean itself is the same full TR19® job as in any town: 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 photos, and for TR19® Grease cleans, a certificate issued through the BESCA VHE portal. Any parts we couldn’t reach are recorded on it too.
- Place
- Castle Green (GU24)
- Region
- Surrey
- Reporting
- Report and photos after the visit
- Quote
- A fixed quote up front
- Working hours
- Evenings, overnight and weekends; 24/7 emergencies
- Phone
- 0345 646 2711
- Updated
- 30 October 2026
What we do, step by step
There are three stages on the day: set-up, the treatment itself and the sign-off. Set-up means sheeting and making equipment safe, while signing off means the written report and photos. The middle part takes longest, and that 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 Castle Green run smoothly.
- 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.
- We check the filters are seated and the canopy is ready to use.
- Anything that needs attention, such as a greasy plenum, is pointed out.
How to prepare
- Agree a time when the area can be out of use
- Mention any sign-in, permit or induction we need
- Have your last certificate or report to hand
Get a fixed quote
To help us quote: where the site is, what it is and its opening hours, photos of the system and the last certificate or report, if there is one. Then ring 0345 646 2711 or drop us a line.
Related advice
Multi-site and managed buildings
Managing agents often deal with us directly. Tell us the site, the work and the access arrangements, and we will send a fixed quote.
We work for landlords, managing agents and facilities managers as well as the people running the site. Shared systems, like a riser serving several units, need a clear agreement on who books the work, and we’re happy to quote for all of it.
Signs you need grease filter exchange in Castle Green
Missing filters are more common than you’d think. Every gap in the filter bank lets grease straight into the plenum and on into the ductwork.
These are the problems we see most often:
- Poor airflow through the filters
- Filters so greasy the air can barely pass
- Filters left unwashed on busy weeks
- Hand-washed filters that still look greasy
School kitchens, at schools like St Lawrence CofE (Aided) Primary School for example, are typically cleaned in the holidays so no lunches are lost.
Comparing quotes
- Whether the whole system is included, or only the parts that are easy to reach
- Whether the quote is based on a survey or pictures
- When the next visit should be, and why
- Whether the quote shows VAT
How we price grease filter exchange
Sites vary more than people expect. The main factors:
- The condition of the system
- Parking and loading at the site
- The size of the system
- Working hours and out-of-hours timing
One small site or a whole estate, the quote is built the same way: what needs doing, how we get to it and when. The price is fixed before we start.
What we need to know
Photos let us diagnose from a distance. The most useful are:
- The paperwork from the last visit, if you have it
- Your opening hours and when the area is out of use
- The roof, plant room or outside wall the system runs to
- Problems your staff have spotted
Quoting starts with a diagnosis, either from photos and details you send or from a site visit. Then we send a fixed price so you know the cost before we start.
Why deal with it now?
Washing filters in-house is an option for kitchens in Castle Green, and it works when it’s done well and never skipped. When it doesn’t happen reliably, an exchange makes it automatic. Our emergency line runs 24/7, but a planned visit to Castle Green is calmer for everyone.
What you pay depends on how big the system is, the condition it’s in and access to every part of it. You get a fixed price before we start, so there are no surprises.
Why choose Duct Doctor in Castle Green
- Photo reports with every job
- Fully insured
- BESCA Vent Hygiene Elite member, cleaning to BESA TR19® Grease
- Accredited under CHAS and SafeContractor, with ISO 9001
Take a look at our cost guide or how to check a contractor.
Part by part
Busy restaurant and pub kitchens
The more a kitchen cooks, the more grease the filters see. Changing them on time protects the ducts behind.
Baffle filters
In a baffle filter, the air zigzags through metal baffles. Grease drops out as it does.
Your questions about grease filter exchange in Castle Green
Can you work in Castle Green outside opening hours?
Yes, evening, overnight and weekend work is normal for us. The work in Castle Green can fit around your hours. Your opening times are the first thing we ask for.
Which environmental health team covers Castle Green?
In Castle Green, it’s Surrey Heath 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.
How much notice do you need?
That depends on the slot you want and the size of the job. Tell us your preferred dates when you ask for a quote, and if it’s an emergency, call us any time.
How do you keep the site clean during the work?
Floors and surfaces near the work are sheeted before any work starts, and anything we remove is contained. Before we leave, we tidy up and clean down.
What if parts of the system can’t be reached?
They’re marked on the report. Often the fix is extra access, such as new panels in ductwork, which we can install.
Does the report say when we need you again?
Yes. The recommended date is on the report. BESA’s minimum intervals for kitchen extracts range from 3-monthly for heavy use to 12-monthly for light use, and fire dampers need testing at least once a year.
How long does the visit take?
That depends on the amount of work, but for many sites it takes anything from a few minutes to an hour or so, depending on the number of filters. We will give you a better idea when we quote.
Can damaged filters stay in the canopy?
Filters that no longer fit properly need replacing. We will tell you which ones and why when we find them.
Looking after it afterwards
Once we’ve finished, these simple steps help:
- Keep the canopy clear for exchange visits
- Never cook with the extract switched off
- Keep canopy surfaces wiped down
- Make sure no filter is left out
Your next visit is scheduled before we leave. If cooking increases, we can change filters more often to match.
A kitchen that’s getting busier needs its filters changed more often. Changing the interval early stops grease building up unseen in the ducts.
Castle Green kitchens: local notes
The Food Standards Agency lists about 9 pubs, bars and clubs as registered food businesses in and around Castle Green, up to about a mile and a half out. Wherever they cook, the canopy, duct and fan collect grease just as a restaurant’s do. The fire and rescue service for Castle Green is Surrey Fire and Rescue Service. In most workplaces, including commercial kitchens, it’s the fire and rescue authority that enforces the Fire Safety Order. In Castle Green, food businesses are inspected by environmental health officers from Surrey Heath council. The cleanliness of the kitchen and its equipment, extraction included, is part of what they check. Keeping each certificate and photo report on file helps show the extract is looked after.
If you run a church or community hall kitchen, near Church of St Lawrence or elsewhere in Castle Green, its extract still collects grease from every lunch and event. Kitchens that cook twelve hours or more a day, as some healthcare kitchens do, fall into BESA’s three-monthly minimum; Brookwood Hospital is the nearest hospital to Castle Green, about 1.6 miles south.
Castle Green is about 2 miles north-west of Woking, in Surrey. Castle Green gets the same approach as every site we work on: a survey first, a fixed quote, work timed around your hours and a report with pictures. Our Surrey coverage runs to 395 places, Castle Green among them. Our Guildford page covers sites nearby (6 miles or so).
Our technicians cover all of the GU24 postcode area for grease filter exchange and the streets around it. Whether your site is on Scotts Grove Road, Guildford Road and Scott's Grove Close or anywhere close by, our technicians can take on the work. If your site is just outside Castle Green, we cover Penny Pot (1 mile north-west), Coxhill Green (1 mile north-east), Chobham (1 mile north-east), West End (1 mile west) and Bisley (1 mile south-west). We also work in nearby towns such as Guildford (6 miles south), Camberley (5 miles west), Epsom (15 miles east), Farnham (12 miles south-west), Ewell (15 miles east) and Egham (7 miles north-east).
Near you in Castle Green
We work in commercial kitchens and buildings around The Sun Public House, Gordon's School and Milford Green and Coxhill Green, among other places. The closest station to Castle Green is Brookwood station, roughly 2.6 miles south-west. A little further out are Brookwood Hospital (1.6 miles south) and Chobham Museum (0.8 miles north-east). Green spaces nearby include Brookwood Lye.