A boiler that won't fire usually shows a fault code or a flashing light. The fix depends entirely on the code — and most can be diagnosed before a callout.
Safe steps you can take in the next 10 minutes — in order.
When to stop and call
Any fault code starting with E, F, or specific numbers your manufacturer says require an engineer. Always when there's a smell of gas — call National Gas first on 0800 111 999.
Most cases of a boiler that won't fire in Tredworth homes come down to one of these.
Quick fix
£110
Typical
£260
Worst case
£700
Pressure or condensate fix: £90–£140. Diverter or expansion vessel: £180–£320. PCB or heat exchanger: £400+.
The service that fixes this
Gas Safe registered boiler installation and replacement — energy-efficient systems from Worcester Bosch, Vaillant, and Ideal with manufacturer warranties.
See boiler installation in Tredworth →Sometimes yes — the steps above cover the common DIY fixes. Any fault code starting with E, F, or specific numbers your manufacturer says require an engineer. Always when there's a smell of gas — call National Gas first on 0800 111 999.
Around £260 for the typical repair (range £110–£700). Pressure or condensate fix: £90–£140. Diverter or expansion vessel: £180–£320. PCB or heat exchanger: £400+.
For genuine emergencies in Tredworth we usually attend within 1–3 hours during weekdays. For non-urgent jobs we typically book within 2–5 working days.
Usually no. A boiler that won't fire can normally wait until the next working day, which keeps the cost down. Genuine emergencies are flooding, no water at all, or gas smells.
We cover Tredworth and the wider Gloucestershire area for fast plumbing and bathroom repairs.
Call 07927 593 585A small sample of Gloucestershire work. Every job here was managed by the same team that would handle your Tredworth project.



5.0 stars across 34 reviews. Local team. Fully insured. Workmanship guarantee. We're 20 minutes from Tredworth, so we're not booking and dropping.
Most Tredworth clients come to us after a quote elsewhere that felt thin on detail. Ours isn't — every line item is listed, every assumption is named, and we'd rather lose the job than over-promise.
Boiler Installation jobs in Tredworth are scheduled around the realities below — postcode coverage, nearest roads, councils involved, and the named places we travel to from there.
Gloucester City Council — covering GL1, GL2, GL3, GL4 postcode districts.
We reach Tredworth via M5 J11, M5 J11a, M5 J12 — and serve sites within roughly 20 miles of here.
Gloucester Quays · Gloucester Business Park (Brockworth) · Waterwells Business Park · Quedgeley West Business Park
Tredworth is a Gloucester neighbourhood — gloucester city centre has restricted-access streets — we plan deliveries around the one-way system and use trade parking off westgate.