Every installation follows the same four steps: a free fifteen-minute survey, an itemised fixed quote in writing, the install day itself (one day for a swap, usually two for a conversion), then handover — controls set up, warranty registered in your name, compliance certificate posted to you. Combi swaps start at £1,999 fitted; conversions from £2,699.
What you get for the price
This page is the full picture of how an installation with us actually works, start to finish, and exactly what the fitted price buys. Every installation we quote is a complete job, not a boiler on a wall. The fitted prices on this site include the appliance, a horizontal flue, a wireless room thermostat, a magnetic system filter, chemical cleanser and long-term inhibitor, all fittings, and the Building Regulations notification that goes to your local authority.
- The boiler itself, sized to your radiator count
- A horizontal flue
- A wireless room thermostat
- A magnetic system filter
- Chemical cleanse and long-term inhibitor
- All fittings
- Building Regulations notification to your local authority
- Compliance certificate posted to you
- Manufacturer warranty registered in your name
- Old boiler and packaging taken away
Combi swap or system conversion?
A combi swap means your new boiler goes where the old one was and the pipework is largely reused — the cheapest and quickest option, usually one day.
A conversion means moving from an older system with a hot water cylinder and a tank in the loft over to a single combi. It costs more because we remove the cylinder and tanks, re-run pipework, make good, and rebalance the whole system. Budget two days, from £2,699. For most three-bed houses across Birmingham it is the change that makes the biggest difference to running costs and loft space.
If you have two or more bathrooms and a household that showers at the same time, a combi is often the wrong answer — we will say so at the survey rather than sell you the wrong boiler.
Which boiler should you actually buy?
We install Worcester Bosch, Vaillant, Baxi and Main — those four only. Forget the idea of a single best boiler — choose the output your radiator count needs and the warranty that matches how long you plan to stay.
- Baxi / Main Eco Compact and Worcester Greenstar 1000 — a solid budget choice for a flat or small terrace, 5 year warranty.
- Baxi 600 — the best warranty-per-pound on our list, at 7 years.
- Worcester Greenstar 4000 and 8000 — quieter, better hot-water performance, worth it in a family home with a power shower.
- Vaillant ecoTEC plus — our pick for larger properties and for anyone who wants parts availability for years to come.
Not sure? Answer three questions and we will point you at the right row of the price list.
Prices
| 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.
How the job runs
- 1
Survey
Gas meter and supply pipe checked, radiators counted, flue routes and water pressure looked at — around fifteen minutes, free.
- 2
Fixed quote
You get an itemised price in writing, and it only moves if the scope does.
- 3
Install day
On a swap the water and gas go off in the morning and come back on the same evening. A conversion or a boiler move usually runs to two days.
- 4
Handover
We set up the controls, show you how the thermostat works, register the warranty and hand over the paperwork.
The paperwork that follows
An installation is not finished when the boiler fires. We notify Building Control of the new appliance, and the compliance certificate is posted to you — keep it safe, because solicitors ask for it when you sell. We register the manufacturer warranty in your name so the 5, 7 or 10 year cover actually stands, and we complete the commissioning record in the boiler's Benchmark section, which the manufacturer can ask to see if you ever make a warranty claim. You are left with the user instructions, the certificates, and a working knowledge of your own thermostat.
One thing worth knowing for later: every manufacturer requires an annual service to keep the warranty valid. That is routine work our engineers handle year-round — the same team, whichever site you found us through.
Costs that are not in the headline price
We would rather flag these now than surprise you on the day. 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. A free survey catches all of them before you commit.