Actual statement of events
★★★★★
CGR has completed his works in a very efficient and pleasant way.
Home / Areas we cover / Cobham
Boiler installation and heating engineers in Cobham
New boilers, repairs, servicing, central heating, plumbing and air conditioning across Cobham and the surrounding villages. Gas Safe registered, no call-out charge, and rated 9.67 out of 10 from 266 verified Checkatrade reviews.
Covering KT11
Burst pipe or leak? Emergency plumber in Cobham
- 9.67 / 10266 verified reviews
Boilers we supply and install
Heating engineers in Cobham who turn up when they say
We are a family-run heating and plumbing company based in Guildford, covering Cobham and the area around it. Twenty minutes from Guildford up the A3. Every job is carried out by a Gas Safe registered engineer, every price is confirmed in writing before we start, and there is no charge for coming out to look at a boiler repair.
Next day as standard, same day for emergencies.
What it costs in Cobham
- New boilers fitted from £2,211 including VAT
- Annual boiler service £89
- Landlord gas safety certificate £99, or £139 with a service
- Boiler repair diagnosis £75, with no call-out charge
- Powerflushing from £1,000 + VAT
- Air conditioning from £1,850 fitted
If you would rather see a figure for your own property than a range, the quote tool asks a few questions about your home and gives you real prices in about ninety seconds, without anybody visiting.
Instant quote
What would a new boiler cost in Cobham?
Answer a few questions and see real prices. About ninety seconds, no home visit.
Start my quoteGuide price, confirmed in writing after a survey.Or call 0333 054 0046
KT11Postcodes we cover
Hard waterA scale reducer protects a combi
No call-outFixed diagnosis fee, off the bill if fixed
9.67/10From 266 verified Checkatrade reviews
New boilers in Cobham: what we fit and why
Replacing a boiler is the largest single thing most households spend on their home without being shown a price first. We think that is the wrong way round, which is why every boiler we fit in Cobham is priced before anybody comes to the door. What follows is the reasoning we would go through with you at the survey, written out.
The housing here, and what it means for your boiler
Cobham is dominated by modern estate property, which brings cavity walls, decent insulation and boilers reaching the end of their first replacement cycle. In practice usually a straight swap, and one of the quicker jobs we do.
Alongside that sits a good deal of inter-war stock, where cavity walls, original airing cupboards and heating systems extended piecemeal since the sixties. The two need different approaches, and a company that quotes the same boiler into both is not really looking at your house.
Substantial detached property, a good deal of it on large plots, with village housing around the Cobham and Stoke d'Abernon centres.
Water in Cobham is hard
Heat hard water and the dissolved calcium comes out as limescale, coating every surface the hot water touches. Inside a combi that matters more than anywhere else, because the plate heat exchanger that makes your hot water has very narrow passages.
The symptoms arrive in a predictable order: hot water swinging between scalding and lukewarm, then a kettling noise when the boiler fires, then reduced flow at the tap, then a failed heat exchanger and a bill. A scale reducer on the incoming main costs a fraction of that.
Which type of boiler suits a Cobham home
For most properties here with one or two bathrooms and a reasonable incoming mains, a correctly sized combi is the right answer. It heats water on demand, frees up the airing cupboard and removes the loft tanks entirely.
Where it goes wrong is simultaneous demand. A combi produces hot water at a fixed rate, and that rate is shared between every outlet that is open. If two showers run at once, neither gets what it needs. Homes here with three or more bathrooms and showers in daily use are better served by a system boiler paired with an unvented cylinder, which delivers mains-pressure hot water to several outlets at the same time.
The other thing that rules a combi out is a weak incoming main. We measure the flow rate at the survey rather than assuming it, because no combi can deliver more water than the street brings in. Fitting a bigger boiler to fix a weak shower is the single most expensive misunderstanding in domestic heating, and it changes nothing at all.
Sizing: why bigger is not safer
There is a widespread belief that an oversized boiler is the cautious choice. It is not. A boiler substantially larger than its house heats the radiators quickly, reaches temperature and shuts down, then fires again a few minutes later. That is short cycling, and it is the heating equivalent of stop-start traffic: every ignition wastes fuel, the components wear faster, and the boiler never settles into the steady low-output condensing mode where it is most efficient.
The result is a boiler that costs more to buy, more to run and fails earlier. We size on the number of bathrooms and showers, the radiator count and the measured mains flow rate, not on the size of the old one.
Trusted by hundreds of homes across Surrey and London
Every review here is a verified Checkatrade review, left after a real job. Many were written under our previous name, CGR Plumbing & Heating — same engineers, same standards, new name.
9.67/10
★★★★★
Checkatradefrom 266 reviews
Waste piping replacement
★★★★★
CGR were rectifying the waste piping for under our kitchen sink, and also removing the waste for our previous water softener. Very happy with their knowledge, quality of work, customer service and wouldn't hesitate to recommend their services. Also a huge bonus to have a 30 day guarantee on the works provided.
Toilet fixing
★★★★★
He is a polite and knowledgeable tradesman. He communicates clearly and executes the job as planned and agreed.
Replaced a hot water expansion vessel
★★★★★
I have a great experience dealing with CGR. From the start he was very professional and efficient. Even when he ran into a complication with the combination valves, he resolved the issue without complaint and to an excellent standard. Thank you CGR.
Fixing shower pressure
★★★★★
My shower pressure suddenly fell very low. I called CGR and they came to fix the problem. Not even a day later and my shower was fixed. Thank you for your quick and very professional service.
Fixed the bathroom basin tap
★★★★★
We always call them as they are reliable and honest.
Replaced pump and 3 way valve
★★★★★
Great team. Quick job. Impossible to complain and happy to recommend.
Boiler service
★★★★★
CGR Heating serviced my gas boiler and magna clean system. They were punctual and completed the work to a high standard. I would recommend them.
Boiler service
★★★★★
Very reliable and punctual. He's very tidy and gets on with his work quietly.
Emergency water leak in kitchen
★★★★★
We had an emergency water leak. CGR was able to attend very quickly and help to isolate and stop the leak. It was near the stopcock and underneath some kitchen drawers so it required some cutting of wood to access and took a few hours, but he worked hard to fix it and then cleaned up thoroughly afterwards.
Boiler and radiator fault repair
★★★★★
I had a boiler fault that was actually caused by an airlock in my central heating. Chaudray identified the potential issue quickly and clearly communicated the steps required to fix it. He carried out the work then and there, and the problem was solved. He was very courteous and tidy, too.
Gas safety certificate
★★★★★
CGR carried out gas safety review and boiler service at one of our rental properties. Arrived on time and explained all the checks they did. Thank you.
Replaced electric shower
★★★★★
CGR were very quick to respond and replaced the electric shower in one of our rented properties.
Cap gas pipe
★★★★★
Perfect, thanks.
Water main repair and gas pipe cap
★★★★★
Great communication before, and turned up early and friendly. Perfect job completed in time. Thanks.
Removing radiators
★★★★★
Quality of work, clarity and tidiness was excellent. Chaudray was clear about all the steps of work, fixed some historical issues as part of solving the job to the best standard, but checked, explained and gave options as he went.
Excellent service
★★★★★
Chaudhry messaged me promptly and was able to come the next day. He was really friendly and carried out the work quickly and to a high standard.
Boiler fixed
★★★★★
Very professional and competent.
Repairs, and when to stop spending
There is no call-out charge anywhere in Cobham. We diagnose the fault for a fixed fee, tell you what it costs to put right, and you decide. If you say yes and we fix it on the same visit, that fee comes off the repair bill.
The faults we see most often here are predictable: a diverter valve that has stopped switching between heating and hot water, pressure dropping because of a leak or a failed expansion vessel, banging and kettling from scale or sludge in the heat exchanger, and fault codes on the display. Tell us the code when you ring and we can often bring the right part first time.
We will also tell you when to stop. If a boiler is past twelve years old, parts are getting scarce and the repair runs into several hundred pounds, replacing it is usually the better answer. Pouring money into a dying boiler helps nobody, and we would rather say so than take the work.
Servicing and landlord certificates in Cobham
An annual service takes about an hour on a typical domestic boiler, because a service that takes fifteen minutes is not a service. We check gas pressure and gas rate against the manufacturer's figures, run a flue gas analysis, inspect the flue inside and out, clean the heat exchanger, examine the burner, test every seal for soundness, operate the safety devices, check and recharge the expansion vessel, clear the condensate trap and set the controls correctly. You get the actual readings written down.
Almost every manufacturer guarantee requires a documented annual service. Miss one and cover can be void, which turns a heat exchanger failure in year six from a free warranty claim into a four-figure bill. It is the most common reason people lose cover they believed they had.
There is a reasonable rental market here, and we handle landlord gas safety certificates for single properties and small portfolios alongside owner-occupier work.
What a boiler installation in Cobham includes
- The boiler, with its full manufacturer guarantee registered on your behalf
- Fitting by a Gas Safe registered engineer, notified to building control
- A full system flush to clear rust and sludge before the new boiler is connected
- Cleaner and long-life inhibitor added to protect it from day one
- A magnetic filter, fitted as standard, to catch anything that forms later
- Controls and smart thermostats available — your choice, priced separately
- Any pipework alterations the swap needs
- The old boiler removed and taken away for recycling
- All certificates, and the warranty registration paperwork
There is no separate charge for the flush, the filter or taking the old boiler away. If the survey turns up something that changes the figure, you hear about it then, not halfway through the job.
Gas Safe registered
Reg. 300222
Checkatrade approved
9.67 / 10
FCA authorised
Ref. 1058977
Family run
Since 2019
Credentials
Checked, registered and accountable
Anyone can put a van sticker on and call themselves a heating engineer. These four are the ones that actually mean something, and we will show you any of them before you let us near your boiler.
- Gas Safe registration is a legal requirement for gas work, and it is what makes your installation notifiable and your manufacturer guarantee valid.
- Checkatrade verifies every review against a real job, so the 9.67 is not something we wrote about ourselves.
- FCA authorisation means the finance side is regulated rather than arranged on a handshake.
- Family run is not a certificate, but it is the reason the person quoting your job is the person accountable for it.
How quickly we can get to Cobham
Twenty minutes from Guildford up the A3. Next day as standard, same day for emergencies.
If you have no heating or hot water we treat it as urgent. A straight swap is a day's work; a conversion, a back boiler removal or a relocation is usually two.
Why a local firm beats a national in Cobham
The national names work on a call centre and a rota of subcontractors. You explain the problem to somebody reading a script, you are given a four-hour window, and the engineer who arrives has never seen your boiler and will not be the one who comes back.
We are a small family firm in Guildford. Your boiler is on our system with its history, and if we fitted it we know exactly what is in there. When you ring, you speak to somebody local who can tell you honestly whether we can reach Cobham today. The person who quotes the job is accountable for it.
It also means we know the housing. An unvented cylinder paired with a system boiler delivers mains-pressure hot water to three outlets at once. A combi will not, and pretending otherwise is how people end up disappointed.
Nearby
We also cover Esher, Leatherhead, Ripley and Weybridge and the rest of Surrey. If you are not certain your postcode is in range, put it into the checker further down this page and it will tell you straight away.
Guide prices including VAT, worked out from your answers and confirmed in writing after a survey.
The housing in Cobham, and what it means for your heating
Substantial detached property, a good deal of it on large plots, with village housing around the Cobham and Stoke d'Abernon centres.
Large houses with several bathrooms in daily use are the norm, and a combi is very often the wrong answer here no matter what the homeowner has been told. An unvented cylinder paired with a system boiler delivers mains-pressure hot water to three outlets at once. A combi will not, and pretending otherwise is how people end up disappointed.
Many properties have been extended more than once, leaving heating systems sized for a smaller house.
Cobham village and Stoke d'Abernon have conservation areas.
None of that is a reason to worry. It is a reason to have somebody look at the property before quoting, which is exactly what we do, and it is why a price from a national company reading off a script so often changes once their engineer actually arrives.
New boiler installation in Cobham
A new boiler is the biggest single thing most households spend on their home without ever seeing a price first. We think that is the wrong way round, which is why every boiler we fit in Cobham is priced before anybody comes to your door.
We install Worcester Bosch, Vaillant, Baxi and Glow-worm, and we are not tied to any of them. That matters, because the right boiler for a two-bedroom flat near the station is not the right boiler for a five-bedroom house with two en-suites, and a company that only sells one brand will fit that brand either way.
Sizing is the part that goes wrong most often. Fit a boiler that is too small and you get lukewarm showers whenever two taps run at once. Fit one that is too big — far more common, because it is the easy way to avoid complaints — and it cycles on and off all winter, wears itself out and costs more to run. We size on the number of bathrooms and showers, the radiator count and the incoming mains flow rate, not on a rule of thumb.
What is included in the price
- The boiler, with its full manufacturer guarantee registered for you
- Installation by a Gas Safe registered engineer
- A full system flush to clear rust and sludge
- Cleaner and long-life inhibitor
- A magnetic filter, fitted as standard
- Controls and smart thermostats available — your choice, priced separately
- Any pipework alterations the swap needs
- Removing and disposing of the old boiler
- Building control notification and all certificates
Boiler repair and breakdowns in Cobham
There is no call-out charge anywhere in Cobham. We diagnose the fault for £75, tell you exactly what it costs to put right, and you decide. If you say yes and we fix it on the same visit, that £75 comes off the repair bill.
The faults we see most are predictable: a diverter valve that has stopped switching between heating and hot water, pressure dropping because of a leak or a failed expansion vessel, banging and kettling from limescale or sludge in the heat exchanger, and fault codes on the display. If you tell us the code when you ring, we can often bring the right part first time and save you a second appointment.
We will also tell you when to stop spending. If your boiler is over twelve years old, parts are getting scarce and the repair runs into several hundred pounds, replacing it is usually the better answer. Pouring money into a dying boiler helps nobody, and we would rather say so than take the work.
If you smell gas, ring the National Gas Emergency Service on 0800 111 999 first. It is free and runs 24 hours. Turn the gas off at the meter if you can safely reach it, open the windows, leave electrical switches alone and get everybody out. Ring us afterwards and we will handle the repair once the supply has been made safe.
Boiler servicing and landlord certificates in Cobham
An annual service is £89 in Cobham, a landlord gas safety certificate is £99, and both together are £139. A service takes about an hour on a typical domestic boiler, because a service that takes fifteen minutes is not a service.
We check gas pressure and gas rate against the manufacturer's figures, run a flue gas analysis, inspect the flue inside and out, check and clean the heat exchanger, examine the burner and injectors, test every seal and joint for soundness, operate the safety devices, check and re-charge the expansion vessel, clear the condensate trap, and set the controls and system pressure correctly. You get a written record of the actual readings, not a sticker with a date on it.
Almost every manufacturer guarantee requires a documented annual service. Miss one and the cover can be void, which turns a heat exchanger failure in year six from a free warranty claim into a bill running into four figures. It is the single most common reason people lose cover they thought they had.
If you let property in Cobham, a gas safety check on every gas appliance is a legal requirement every twelve months and the certificate has to be given to your tenants. We handle single lets and portfolios, arrange access with tenants directly, and email certificates through the same day.
See your boiler price for Cobham in about ninety secondsReal prices from real answers. No home visit, nothing to sign.
Central heating in Cobham
A heating system that has been designed does something a system that has merely been installed does not: it heats every room to the same temperature at the same time, quietly, without any radiator needing to be nudged.
Before we quote a full system we work out the heat loss room by room, taking account of the size of the space, how many external walls it has, the windows, the insulation and what the room is actually used for. From that we size the radiators and the boiler, plan the pipework, and balance the system on commissioning so the flow is right everywhere rather than just near the boiler.
The cheapest way to cut a heating bill in Cobham is almost never a new boiler. It is controls. A house with one thermostat in the hall heats the whole building to whatever temperature the hall needs, all day, including bedrooms nobody uses until ten at night. Splitting a house into zones, fitting thermostatic valves on every radiator and adding a smart thermostat that knows when the house is empty costs a fraction of a boiler replacement. If that is what your house needs, that is what we will tell you.
Emergency plumbing in Cobham
Burst pipe, water through a ceiling, no water at all. Ring us on 0333 054 0046 and we will tell you honestly how soon we can reach Cobham rather than giving you a comforting answer.
Three things to do while you wait, all free and all worth doing. Turn the water off at the stopcock, usually under the kitchen sink. If water is anywhere near electrics, switch off at the consumer unit. Then open the cold taps downstairs, which drains the pipework faster and takes pressure off the leak.
Genuine emergencies are a burst pipe, no water in the property, a leak near electrics, total heating and hot water failure in cold weather, or anything you cannot stop at the stopcock. A dripping tap, a running overflow or one cold radiator can wait until the next working day, and we would rather tell you that than charge you an out-of-hours rate for something that did not need one.
Out-of-hours work is charged at a higher rate and we tell you what that rate is on the phone before we set off. You will never see a figure on an invoice you have not already heard.
Plumbing, taps and bathrooms in Cobham
The small jobs plenty of firms will not turn out for, done to the same standard as a full heating installation. Leaking joints, corroded pipework, seized stopcocks, new taps and mixers, electric showers, thermostatic valves, running toilets, leaking pan connectors, waste pipework, appliance plumbing and outside taps fitted with a proper isolation and check valve.
We charge an hourly rate with a minimum first hour, told to you before we set off rather than after the work is done. If your description makes it clear the job is bigger, we quote it as a single price instead so there are no surprises. We carry the common parts — washers, cartridges, valves and connectors — which means most small jobs are finished on the first visit rather than becoming two appointments and two charges.
Air conditioning in Cobham
Single-room air conditioning starts at £1,850 fitted and multi-room systems at £3,450, installed by F-Gas qualified engineers.
The part most people do not realise is that an air conditioner is a heat pump. It does not make cold; it moves heat from one side of a wall to the other. Run it in reverse and it moves heat into your home instead, delivering roughly three units of warmth for every unit of electricity it draws, because it is transporting heat rather than generating it.
That makes it the cheapest way to heat a room your central heating has never handled well — a loft conversion, a garden office, a conservatory, an extension at the end of a long pipe run — as well as the only way to properly cool one. In Cobham it is usually a cheaper install than extending the central heating to reach that room.
Where we work
We are based in Guildford and cover everything inside the orange line — thirty-one areas across Surrey and into south-west London. Tap any town to see what we do there.
Map data © OpenStreetMap contributors
Do we cover you?
Pop your postcode in and we will tell you straight away.
31areas covered
Same dayfor emergencies where we can
Most of our work is within half an hour of the door. That is deliberate — it is why we can usually reach a breakdown the same day.
Woking and north Surrey
Mid and east Surrey
South-west London
Areas we cover in and around Cobham
We work right across Cobham and the surrounding villages, including Oxshott, Stoke d'Abernon, Downside and Cobham Village and the streets between them. If your postcode starts KT11 we almost certainly reach you, and for larger jobs we travel further than that.
Not sure? Ring us on 0333 054 0046 and we will tell you in ten seconds rather than taking your details first.
Why a local engineer beats a national in Cobham
The big national names work on a call centre and a rota of subcontractors. You explain the problem to somebody reading a script, you get a four-hour window, and the engineer who arrives has never seen your boiler before and will not be the one who comes back if something needs looking at.
We are a small local company. Your boiler is on our system with its history, and if we fitted it we know exactly what is in there. When you ring, you speak to somebody in Guildford who can tell you honestly whether we can reach Cobham today. The person who quotes your job is the person accountable for it.
It also means we know the area. An unvented cylinder paired with a system boiler delivers mains-pressure hot water to three outlets at once. A combi will not, and pretending otherwise is how people end up disappointed.
Boiler and heating questions from Cobham customers
How much does a new boiler cost in Cobham?
A straight combi swap in Cobham starts at £2,211 fitted including VAT, and most three and four-bedroom homes sit a little above that, depending on the boiler and the guarantee you choose. Converting from a cylinder system to a combi adds around £900, and removing an old back boiler adds around £1,250. Our quote tool gives you a figure for your own property in about ninety seconds.
How quickly can you install a boiler in Cobham?
If you have no heating or hot water we treat it as urgent and aim to fit the replacement within 24 to 48 hours of you accepting the quote. A standard swap takes a day. A conversion, a back boiler removal or a relocation usually takes two. Next day as standard, same day for emergencies.
Do you charge a call-out fee in Cobham?
No. Boiler repairs carry a £75 diagnosis fee anywhere in Cobham, and that comes off the bill if we fix the fault on the same visit. There is no separate charge for coming out.
Are your engineers Gas Safe registered?
Yes. Every gas job in Cobham is carried out by a Gas Safe registered engineer and notified to building control, which is what keeps your manufacturer guarantee valid. We are happy to show you the card before we start, and you should ask any company that will not.
Do you do landlord gas safety certificates in Cobham?
Yes, for single properties and for portfolios. A landlord gas safety certificate is £99, or £139 alongside a full service. We contact tenants directly to arrange access and email the certificate to you the same day.
Is the water hard in Cobham?
Most of Surrey sits on chalk and has hard water, which furs up the inside of a combi boiler over time. An unvented cylinder paired with a system boiler delivers mains-pressure hot water to three outlets at once. A combi will not, and pretending otherwise is how people end up disappointed. We will tell you at the survey whether a scale reducer is worth fitting at your property.
Which boilers do you install in Cobham?
Worcester Bosch, Vaillant, Baxi and Glow-worm. We are not tied to one manufacturer, so we recommend on what actually suits the property rather than on what earns us the most. Guarantees run from five to twelve years depending on the model, and we register them with the manufacturer on your behalf.
Do you cover the villages around Cobham?
Yes. We cover Cobham and the surrounding area, including Oxshott, Stoke d'Abernon, Downside. If you are not sure whether your postcode is in range, ring us on 0333 054 0046 and we will tell you straight away.
Nearest to Cobham
Everywhere else we cover
Get a price without anyone knocking on your door
Answer a few questions and see real numbers in about ninety seconds. No sales visit needed to find out roughly what it costs.