The job: Like-for-like combi swap in a 3-bed mid-terrace on BB10, replacing a 14-year-old Worcester Greenstar 24Ri that had finally given up after a heat-exchanger failure.
Postcode: BB10 · Property: 1930s 3-bed mid-terrace · Bathrooms: 1 · Customer: Family of four upgrading from old combi · Install time: 1 day
The brief
Sarah called us on a Monday morning — no heating, no hot water, two school-age kids and a cold snap forecast. The 14-year-old combi had been making a banging noise for weeks and finally locked out with a fault code (EA — flame loss) overnight. We sent an engineer that afternoon for a free diagnostic visit.
On inspection: the primary heat exchanger had developed a hairline crack and was leaking onto the burner. Repairable in theory; in reality, the boiler was out of warranty, parts alone would be £450, and the rest of the unit was at end-of-life. We quoted both the repair and a new fitted boiler — Sarah went with the new install.
What we fitted
- Worcester Bosch 8000 30kW combi — chosen for the 12-year warranty and excellent hot-water flow rate (Sarah's kitchen tap had always run a bit weak with the old 24kW unit).
- New Adey MagnaClean Pro2 filter on the return — captures sludge and protects the new heat exchanger.
- Full chemical power-flush with X400 cleaner and X100 inhibitor — the old system was full of black ferric oxide sludge typical of an unfiltered Lancashire system.
- New wireless room thermostat (included as standard with every install).
- Old condensate pipe re-routed internally to avoid the freeze-up problem the previous boiler had each winter.
Why a Worcester 8000 for this BB10 home
BB10 mid-terraces typically have a single bathroom and family-of-four hot-water demand. 30kW gives plenty of shower flow at the upstairs bathroom while staying efficient on cold mornings. The Worcester 8000 also takes the Easy-Control thermostat which Sarah's husband wanted to control from his phone — bonus.
We chose the 30kW over the 35kW because the existing 22mm gas pipework from meter to boiler position was already maxed out — going to 35kW would have triggered a gas-pipe upsize (extra £350). With one bathroom the 30kW is more than enough.
Local touches that mattered
BB10 has notoriously hard water (~285 ppm CaCO3 — read more in our hard-water guide). To protect the new boiler we fitted an Adey SilverShield in-line magnetic/electrolytic filter on the cold mains and over-dosed the system with extra MC1+ inhibitor. This should add 4–6 years to the heat-exchanger life on average for a Burnley home like Sarah's.
We also re-pitched the condensate drain through the cellar wall — the previous installer had run it externally up the back of the property where it froze every January, locking the boiler out. A 15-minute fix that probably saved Sarah a £180 emergency callout next winter.
The numbers
- Boiler: Worcester Bosch 8000 30kW combi — £2,800 fitted
- Add-ons: MagnaClean Pro2 (included), SilverShield (£85), condensate re-route (included)
- Total invoice: £2,885 inc. VAT — fixed price, no surprises
- Warranty: 12 years parts & labour (annual service required — £85)
- Job completed: 9am–4:30pm, single working day
Sarah's feedback (verbatim, with permission)
“Honestly the fastest, cleanest boiler install we've had. The lads were brilliant with the kids, dust-sheeted everything, talked me through the new thermostat properly, and the hot water from the kitchen tap is genuinely better than it's ever been. Reassuring to have the 12-year guarantee, too.” — Sarah, BB10
Could we do the same for your home?
If you're in a Burnley, Padiham, Nelson or Brierfield 2–3 bed property with a tired combi and one bathroom, the Worcester 8000 30kW is hard to beat in 2025. Read the full Worcester 8000 spec page or get your fixed quote — same-day visits across BB10–BB12.