Boiler replacement in Derby
Typical costs before anyone visits, then a fixed price from a Gas Safe registered installer working in Derby.
Derby homes, and the boiler that fits each one
Derby's older streets near the centre are mostly Victorian terraces. Further out, suburbs are filled with semis built between the 1930s and 1960s, and newer estates sit on the edges. A combi suits most terraces and smaller semis. Bigger households with two bathrooms usually need stored hot water instead. We help you pick the right type, then the price is fixed.
Victorian terraces near the centre: The kitchen wall or a back bedroom cupboard are the usual spots for a combi. Mid-terrace homes need a flue route that keeps clear of next door's windows.
Suburban semis from the 1930s to the 1960s: A one-bathroom semi usually suits a combi. With an en suite added, a system boiler and unvented cylinder handle two showers far better.
Modern estates on the outskirts: A like-for-like combi swap is normal and rarely runs past a single day. Upgrading to a higher output may need a larger gas pipe.
Boiler replacement prices in Derby
| Job | Typical price | Fitting time |
|---|---|---|
| Combi to combi swap | £2,200 to £3,400 | 1 day |
| System or regular to combi | £3,000 to £4,200 | 1 to 2 days |
| System boiler replacement | £2,800 to £4,000 | 1 to 2 days |
| Boiler and full system flush | add £300 to £500 | same day |
Typical prices including VAT, checked October 2026. Your installer gives you a fixed price in writing before any work starts. More detail in our boiler replacement cost guide.
Thinking about a heat pump instead?
With the £7,500 grant, a heat pump can cost less than you think in a well-insulated Derby home.
Is a heat pump right for you?Areas we cover around Derby
- Allestree
- Darley Abbey
- Mickleover
- Littleover
- Chaddesden
- Normanton
- Alvaston
- Oakwood
- Spondon
- Chellaston
Also nearby: Boiler replacement in Nottingham, Boiler replacement in Leicester, Boiler replacement in Sheffield, Boiler replacement in Stoke-on-Trent
Boiler replacement in Derby: questions
What is the typical cost of a new boiler in Derby?
A combi swapped for a new combi usually costs £2,200 to £3,400 fitted, VAT included. Changing a regular or system boiler to a combi typically costs £3,000 to £4,200. The quote is fixed in writing.
We added an en suite to our semi. Is a combi still right?
Possibly not. A combi struggles to run two showers at once. A system boiler with an unvented cylinder stores hot water so both bathrooms get a good flow. Your installer checks mains pressure before advising.
Can I keep my current radiators?
In most cases, yes. The installer checks them during the survey and will only suggest replacing radiators that are leaking, badly corroded or too small for the room.
Will my new boiler come with a warranty?
Most new boilers come with a manufacturer warranty, and the length depends on the brand and model. Your installer registers it for you. Keep up the annual service to stay covered.