The real question is usually not the price — it is whether this boiler has earned a repair or reached the end. If a repair is genuinely the better call, we will say so and point you to our repair arm. If replacement wins, a like-for-like combi swap starts at £1,999 fitted and a cylinder-system-to-combi conversion from £2,699.
Is it actually time to replace?
Some boilers earn a repair; some have simply reached the end. Replacement usually wins when the boiler has been condemned, when the fault is a major component on a unit long out of warranty, or when you are paying for the second or third repair in a couple of winters and the maths has stopped working.
It is not always the answer, though. A modest part on a boiler with years left in it is usually worth fitting — and that is exactly the work our repair arm exists for. If a repair is the better call for your boiler, we will tell you, and you can book it at BirminghamBoilerRepair.co.uk. Same engineers either way, so there is no incentive for us to push you the expensive route.
Undecided? We have written the whole repair-or-replace question up honestly in our guide: should I repair or replace my boiler? It walks through the factors that actually move the decision — what has failed, the boiler's age and warranty position, and what the repairs have been costing you — before any brochure enters the conversation.
What a replacement costs
If the old boiler is a combi, a like-for-like swap starts at £1,999 fitted. If you are on an older system with a cylinder and tanks, converting to a combi starts at £2,699.
| Job | Warranty | Fitted price |
|---|---|---|
| Baxi / Main Eco Compact — combi swap | 5 yr | £1,999 |
| Worcester Greenstar 1000 — combi swap | 5 yr | £1,999 |
| Baxi 600 — combi swap | 7 yr | £2,199 |
| Worcester Greenstar 4000 — combi swap | 10 yr | £2,699 |
| Vaillant ecoTEC plus — combi swap | 10 yr | £2,699 |
| Worcester Greenstar 8000 — combi swap | 10 yr | £2,899 |
| Conversion to combi (from system or open vent) | — | from £2,699 |
Every price includes the boiler, horizontal flue, wireless thermostat, magnetic filter, system cleanse and inhibitor, Building Regulations notification, and removal of the old boiler. Same-position swaps. Estimates confirmed after a free survey.
Broken down right now?
Replacement on this site is planned work — surveyed, quoted, then booked. If your boiler has died and you need someone out to look at it first, start diagnosis-first with the repair side at BirminghamBoilerRepair.co.uk: a proper diagnosis tells you whether you are buying a part or a boiler, and it turns a panicked decision into an informed one. Either way you end up with a written figure before anything is committed.
Costs to weigh before you decide
If the decision does come down on the replacement side, get the whole figure in front of you before comparing it against another repair. A gas supply pipe that is undersized for the new boiler's output, a flue that has to be re-routed, a fused spur that needs moving, a system so heavily sludged it needs a power flush before the warranty is valid, or condensate that has to be run to a soil stack — any of these add cost beyond the headline price. The free survey catches all of them, so the number you weigh against repairing is the real one.