HERTFORDSHIRE, BEDFORDSHIRE & NORTH LONDON
Boiler Repair in Chorleywood
Gas Safe registered boiler repair for Chorleywood homes on mains gas, all the common makes. A fixed £150 + VAT diagnostic (£180 including VAT) for up to an hour on site, with £70 off the repair if you go ahead on the same visit. Call 01462 506 374.
BOILER REPAIR IN CHORLEYWOOD
Four in five Chorleywood homes heat with mains gas
The 2021 Census counted 80.4% of households in Chorleywood North & Sarratt and 81.0% in Chorleywood South & Maple Cross heating with mains gas alone. Those are the boilers this page is about. Gas Safe registered under 956889, and every repair is carried out by a Gas Safe registered engineer.
The same Census found about 107 homes on oil only and 38 on bottled or tank gas only across the two wards, some of them in Sarratt and Maple Cross rather than Chorleywood. We work on mains gas boilers. If your boiler runs on oil or LPG, ring before you book and we will tell you straight whether we can help.
We repair boilers whoever fitted them, across all the common makes.
Faults we look at first
Larger houses often have a system boiler, a cylinder and two or more heating zones, so there are more valves and controls to rule out before the boiler itself is blamed.
Pressure falling and needing a top up every week or two, a leak or a flat expansion vessel
Hot water gone, heating fine, a diverter valve or scaled heat exchanger on a combi, or a zone valve on a system boiler
Locks out on frosty mornings, a frozen condensate pipe on an outside wall
One zone cold, a stuck motorised valve or a failed thermostat rather than the boiler
Banging or kettling as the boiler heats, scale or poor circulation in the heat exchanger
Radiators cold at the bottom, sludge in the system, which a power flush deals with
283
mg/l: one 2025 sample in Affinity’s Rickmansworth and Gerrards Cross zone (AF045)
What hard water does to a boiler
Third-party mapping by watergrade places Chorleywood in that zone. At about 283 mg/l the water is hard, and the part of a combi it troubles most is the plate heat exchanger that heats your taps. If that is what has failed, we fit the new one and talk to you about scale protection on the incoming main at the same visit.
How the £150 diagnostic works
Up to an hour on site
£150 + VAT (£180 including VAT), fixed. The engineer checks supply, pressure and controls, opens the boiler, reads the fault history and finds the fault. Minor work that needs no parts is included.
A fixed price for the repair
If a part or more time is needed, you get one figure for the repair before anything is replaced. Some parts are on a lead time, and we tell you before you decide.
£70 off if you go ahead
Agree to the repair on the same visit and £70 of the diagnostic comes off the repair bill.
If the boiler is past sensible repair, you get the replacement figure alongside. Boiler swaps start from £2,375 + VAT (£2,850 including VAT), and our boiler installation page explains how we price them.
Get a fixed price before we start
Call and talk to an engineer, or send us the details and we will come back to you with a price.
Repair or replace
A single failed part on a boiler under about eight years old is nearly always worth repairing. A heat exchanger or gas valve on a boiler past twelve, with parts getting harder to find, usually is not.
We give you both prices and the reasons, and you decide. Having us repair your boiler does not mean being sold a new one.
Flues on protected houses
Chorleywood has four conservation areas in the parish, with Heronsgate just south. On the Common, an Article 4 direction brings chimneys under planning control, and the Station Estate has its own direction on alterations.
A repair that keeps the existing flue rarely raises any of that. A replacement that moves the flue might, so we check before we quote for one.
What to tell us when you ring
The make and model, from the badge on the front or the label under the casing
Any fault code or flashing light on the display
The reading on the pressure gauge
Whether it is the heating, the hot water or both
When the boiler was last serviced, if you know
A photo of the display sent to us on WhatsApp
No heating in a cold snap
No heat in winter, with an older or vulnerable person in the house, is urgent, and our line is answered by a person 24 hours a day. Turn the boiler off at the switch and stop resetting it, because a boiler locking out is usually protecting itself.
Out of hours rates apply in the evenings, at weekends and overnight. The figures are on our prices page, and we tell you which applies before anyone sets off. For water leaks rather than heating, see our emergency plumber page.
Landlords: about one household in nine in each Chorleywood ward rented privately in 2021. A gas safety record is not a repair, but we can issue one at the same visit once the boiler is working.
What a boiler repair in Chorleywood costs
Gas Safe diagnostic: £150 + VAT (£180 including VAT), fixed, for up to one hour on site, covering the visit, finding the fault and minor work with no parts.
Repairs needing parts are priced in full before we start, and if you go ahead on the same visit, £70 of the diagnostic comes off. Our own work is guaranteed for 12 months, with the manufacturer’s warranty on any part we fit. Every rate is on our prices page.
★★★★★
Rated 4.9 on Google by the people we work for
Why choose Vantage
Rated 4.9 on Google from more than 700 reviews across Google, Checkatrade and Trustatrader. Qualified, accredited engineers, a fixed price before any work begins and a labour guarantee on every job, from an established local company with an office team you can actually reach. No job too small.
Gas Safe registered
Company registration 956889. Every gas engineer carries their own Gas Safe ID card, and you can ask to see it.
Refcom F-Gas certified
REF1024550. Legally required for air conditioning installation and servicing, and we hold it.
CHAS Elite accredited
Veriforce CHAS assessed for health and safety, which is why commercial clients and landlords use us.
City & Guilds and BPEC qualified
Qualified, insured engineers on every job. No subcontracted strangers.
700+ reviews, 4.9 on Google
Across Google, Checkatrade and Trustatrader. Read them before you book.
Labour guarantee on every job
12 months on repairs, installations and everything else. Two years on a full bathroom refit. If anything we did develops a fault, we come back and put it right.
Fixed price before we start
The price is agreed with you before any work begins. No hidden extras on the invoice.
24/7, answered by a person
The emergency line is answered every day of the year by someone who can send an engineer, not a call centre.
Fully stocked vans
Five vans carrying the parts that fail most often, so most jobs are fixed on the first visit.
An office team behind every job
An established local business with multiple engineers and a dedicated office team to keep you informed.
Vaillant myREWARDS and Ideal Max accredited
Accredited installer status means extended manufacturer warranties on the boilers we fit.
Emergency response within the hour
Our average response to an emergency call is under an hour across Hertfordshire, Bedfordshire and Cambridgeshire.
Trusted & Accredited Professionals
Why choose Vantage
Gas Safe registered under 956889. Company number 13248357, VAT number 392 8946 37. A fixed diagnostic price, a fixed repair price, and the choice left with you. Our own engineers, stocked vans, and twelve months on our own workmanship.
Where we repair boilers
Mains gas boilers across Chorleywood and the villages around it:
Station EstateChorleywood CommonChorleywood BottomChorleywood WestShire LaneQuickley LaneLower RoadHeronsgateLoudwaterOuter LoudwaterMaple CrossSarratt
Over the Buckinghamshire border
We repair mains gas boilers in Chenies and Little Chalfont too, on the same terms and at the same prices.
CheniesLittle Chalfont
Everything we offer in the area is on our Chorleywood page.
Frequently asked questions
How much is a boiler repair in Chorleywood?
The Gas Safe diagnostic is £150 + VAT (£180 including VAT), fixed, for up to an hour on site. If parts or more time are needed you get a fixed price first, and £70 of the diagnostic comes off the repair if you go ahead on the same visit.
Do you repair oil or LPG boilers?
This service is for boilers on mains gas, which is how about four in five households in the Chorleywood wards heat their homes. If yours runs on oil or LPG, ring us first and we will tell you plainly whether we can help.
Why does the heating work but the hot water does not?
On a combi, usually the diverter valve or a scaled plate heat exchanger. On a system boiler with a cylinder, look at the zone valve, the cylinder thermostat or the programmer. The diagnostic tells us which.
Is it all right to keep topping up the pressure?
Not for long. Falling pressure means a leak or an expansion vessel that has lost its charge. Each top up adds fresh water that feeds corrosion and sludge, so it is worth finding.
Is it worth repairing an older boiler?
Often yes for a single part on a younger boiler. A failed heat exchanger or gas valve on a boiler well into its teens is a different question. We give you the repair price and the replacement price and leave the choice with you.
How long is a boiler repair guaranteed?
Twelve months on our own workmanship, and the manufacturer’s warranty on the parts we fit.
More of what we do in Chorleywood
Every service we offer in Chorleywood
Annual service, £99 + VAT
Fixed price swaps from £2,375 + VAT
Sludge out, heat back, from £595 + VAT
24/7, answered by a person
Leaks, taps, toilets, cylinders and stopcocks
Every rate, in full, including VAT
Also nearby in Hertfordshire
Book a boiler repair in Chorleywood
Call 01462 506 374 with the make, model and any fault code. We will tell you what we think it is, what the diagnostic costs and when an engineer can be there.