Combi Boiler Cost — How Much Is a Combi Boiler Fitted in 2026?
A combi boiler fitted by a Gas Safe engineer costs between £1,699 and £2,499 in 2026. That price includes the boiler unit, full installation, thermostat, magnetic filter, system flush, old boiler removal and your Gas Safe installation certificate.
Combi (combination) boilers are the most popular type in the UK — they heat your central heating and domestic hot water on demand, with no need for a separate hot water cylinder or cold water tank in the loft. They're compact, efficient and ideal for most homes with 1–3 bathrooms.
Call us: 07305 687 331 — Gas Safe registered engineers serving Greater Manchester.
Combi Boiler Prices by Brand — Fully Installed
Here's what you'll pay for a combi boiler fully fitted by Next Gen Boilers Ltd in 2026:
- Alpha Evoke combi — from £1,699 installed. Budget-friendly with A-rated efficiency, 10-year warranty available. Ideal for smaller homes and landlords.
- Baxi 400 series combi — from £1,749 installed. Excellent mid-range option, quiet, efficient and well-supported. Popular for family homes.
- Baxi 800 series combi — from £1,999 installed. Premium Baxi with enhanced efficiency and 10-year warranty. Great value for money.
- Viessmann Vitodens 050-W combi — from £1,999 installed. German-engineered, stainless steel heat exchanger, 10-year warranty. Superb long-term reliability.
- Worcester Bosch Greenstar 4000 combi — from £2,099 installed. UK's most trusted brand. Up to 10-year warranty.
- Worcester Bosch Greenstar 8000 combi — from £2,299 installed. Top-of-the-range efficiency, premium build quality, maximum comfort.
All prices are fully inclusive — no hidden labour charges, no extras on the day. What we quote is what you pay.
What's Included in the Price?
When you get a combi boiler fitted by Next Gen Boilers Ltd, the price always includes:
- Supply of the new combi boiler — your chosen brand and model
- Full installation by a Gas Safe registered engineer
- Room thermostat or Hive smart thermostat (included as standard)
- Magnetic system filter (e.g. Fernox TF1 or Adey MagnaClean)
- Chemical system flush to protect the new boiler
- Removal and disposal of your old boiler
- Gas Safe installation certificate
- Manufacturer warranty registration — we do this for you on the day
There are no additional call-out fees, no VAT surprises, and no labour charges on top. Our price is fixed before we start.
Is a Combi Boiler Right for My Home?
A combi boiler is the right choice for most homes, but not all. Here's a quick guide:
- Best for: 1–3 bedroom properties, homes with 1–2 bathrooms, homes without room for a hot water cylinder, and properties where gas pressure is good.
- May not suit: Larger homes with 4+ bedrooms and 3+ bathrooms where demand for simultaneous hot water is high. A system boiler with a well-insulated cylinder may be better.
- Converting from system/regular to combi: Most conversions are straightforward. We remove the existing cylinder and tanks, run any additional pipework needed, and install the combi. This typically adds £200–£400 to the price and can still be done in a day.
Not sure what you need? Call us on 07305 687 331 — we'll ask a few questions and give you honest advice on the right boiler type for your home, at no cost.
Frequently Asked Questions
How much is a combi boiler and fitted?
A combi boiler fully fitted in 2026 costs from £1,699 for a budget model (e.g. Alpha Evoke) up to £2,499 for a premium Worcester Bosch 8000. All prices are fully inclusive — boiler, installation, thermostat, filter, flush, old boiler removal and Gas Safe certificate. No hidden extras.
What is the best combi boiler to buy in 2026?
The best combi boiler depends on your budget and home. For budget: Alpha Evoke or Baxi 400. For mid-range reliability: Baxi 800 or Viessmann Vitodens 050. For premium peace of mind: Worcester Bosch Greenstar 8000. All carry up to 10-year warranties when installed by an approved engineer.
How long does a combi boiler installation take?
A like-for-like combi replacement takes 4–6 hours. A combi conversion (replacing a system or regular boiler, including removing the cylinder) takes 6–8 hours and is normally completed in a single day. We leave you with full heating and hot water before we go.
Can I get 0% finance on a combi boiler?
Yes — Next Gen Boilers Ltd offers 0% interest-free finance on all combi boiler installations. A £1,699 boiler over 60 months is from £28/month with no deposit. Finance is subject to approval — apply online or call us to discuss.
Do you remove my old boiler?
Yes — removal and disposal of your old boiler is included in the price. We take it away the same day, leaving your home clean and tidy.