20+ years
Local heating specialists
Gas Safe
Registered Engineers.
Same-day
Mon–Fri 9am–6pm
9.96 / 10
Checkatrade rating
Gas boiler repair in Marlow
Jericos aim to be with you the same day for gas boiler repair in Marlow. We work Monday to Friday, 9am–6pm. We do not take weekend call-outs because the heating wholesalers are closed and we cannot get parts. The van carries a range of common parts — not every part for every boiler. Call-out and diagnosis is £120 + VAT. After that we give a fixed-price repair. We are always happy to repair; we will tell you if it is uneconomical or the boiler is obsolete. If you think the boiler is fine and the problem is the heating system — pumps, radiators or valves — use our central heating repair page.
Same-day aim Mon–Fri
Gas Safe registered
Checkatrade 9.96/10
Range of parts on the van.
Diagnosis
Call-out and diagnosis is £120 + VAT. We find the fault, explain it, then quote a fixed price before any repair starts.
- Fault code, pressure, ignition and flue checks
- £120 + VAT call-out and diagnosis
- Fixed-price repair quoted after diagnosis
Common faults
The faults we see most on gas boilers in Marlow and South Bucks. Common parts are on the van; some parts have to wait for a weekday wholesaler.
- Not firing or no hot water
- Losing pressure or leaking
- Frozen condensate in cold weather
Repair or replace
We are always happy to repair. If the job is uneconomical, or the boiler is obsolete and parts are scarce, we will say so and quote a replacement.
- Repair first where it makes sense
- 12-month guarantee on the part and problem we fix
- If the radiators or pump are the fault, see central heating repair
Why choose Jericos for boiler repair
A family-run Marlow company. We aim to be there the same weekday, diagnose the boiler ourselves, and quote a fixed price after the £120 + VAT call-out. All repair work carries a 12-month guarantee on that part and that problem — not a new warranty on the whole boiler.
Based in Marlow — we aim for same-day weekday visits
Ideal, Worcester Bosch, Vaillant, Intergas, Viessmann and other manufacturers
£120 + VAT diagnosis, then a fixed-price repair
Gas Safe engineers. 12-month guarantee on the repair
Reviews
Jerricos recently sorted out my outdoor lighting for my summer BBQ's, and an emergency call out for a leaking tap. Can't recommend Jerry enough.
Fantastic service. Came out promptly, fixed the problem, no fuss, no bother. Very honest and clear about the work undertaken. Jerrard was excellent. Highly recommended.
Thank you for all your help today. I appreciated your professionalism, knowledge and insights on future solutions.
Amazing service! Very professional
Boiler was installed in no time!
Thank you so much
Boiler was installed in no time!
Thank you so much
Common boiler faults we see
| What you notice | Often is | What we do |
|---|---|---|
| Dead, fault code, no hot water | Ignition, PCB, diverter, pressure | £120 + VAT diagnosis, then a fixed-price repair |
| Works then locks out in a frost | Frozen condensate | Thaw, test, advise insulation. 12-month guarantee on that repair |
| Pressure keeps dropping | Leak, PRV, expansion vessel | Find the loss, quote a fixed price. Repair if it makes sense |
Where we repair gas boilers
We cover Marlow and the towns we actually drive to: Bourne End, Cookham, Maidenhead, Bisham, High Wycombe and Beaconsfield — mainly SL7, SL8 and SL6. Thames-side and Chiltern houses here often mean tight flues, older gravity systems and loft tanks. That is everyday gas work for us.
We aim to reach you the same weekday. The van carries a range of common parts; we cannot carry every part for every boiler. At the weekend the wholesalers are shut, so we do not take those jobs. Recent work: combi lockout in SL7; pressure loss on a Vaillant in SL8; frozen condensate on a cold snap in Marlow. Qualified on Ideal, Worcester Bosch, Vaillant, Intergas, Viessmann and other manufacturers. Owner Jerrard Watts. Gas Safe 571340.
Gas boiler repair FAQs
Do you aim to repair my boiler the same day?
Yes. We aim to be with you the same day, Monday to Friday, 9am–6pm. Same-day depends on the diary and whether the part is on the van.
Why don’t you work weekends?
Heating wholesalers are closed at the weekend, so we cannot get parts. The van carries a range of common parts, not everything. Weekend work would often mean a second visit anyway.
How much is the call-out?
Call-out and diagnosis is £120 + VAT. After we have found the fault we give a fixed-price repair. You decide before we start the repair.
Is the repair guaranteed?
Yes. The part we fit and the problem we fix are guaranteed for 12 months. That is not a new warranty on the whole boiler.
What if you don’t have the part on the van?
We carry a range of common parts. If the part is not on the van we collect it from a weekday wholesaler and come back to finish. That is also why we do not take weekend jobs.
Will you always try to repair rather than replace?
Yes. We are always happy to repair. If the boiler is obsolete, parts are scarce, or the repair is uneconomical next to a new boiler, we will explain that and quote a replacement.
Are you Gas Safe registered?
Yes. Jericos Gas Safe number is 571340. The engineer’s Gas Safe ID is shown on arrival. We do not put scanned certificates on the website — the live register number is what matters.
Which boilers do you work on?
Ideal, Worcester Bosch, Vaillant, Intergas and Viessmann, and other manufacturers — combi, system and heat-only.
What if I think it is the central heating, not the boiler?
If the boiler fires but the house stays cold — or only some radiators heat — the fault is often the system. Use the central heating repair page. If you are not sure, book a diagnosis here and we will tell you which it is.
Jericos
Gas boiler repair in Marlow
5 Washington Court, Marlow, SL7 1UN