Buy a new conventional boiler with British Gas today
Get a energy-efficient conventional boiler from British Gas and you could cut your gas bill by up to 22%.
Two ways to get your conventional boiler quote
Whatever you pick, we'll give you personalised conventional boiler recommendations tailored to your home.
Our most popular option
Online quote
Get an instant estimate for a new conventional boiler in minutes. Just answer a few questions about your home and we’ll do the rest.
Home visit
Rather speak to an expert face-to-face? Book a free, in-person visit and they’ll find the right one for your home and budget.
What is a conventional boiler and how does it work?
What is a conventional boiler?
Also known as a ‘regular’ or ‘heat-only’ boiler, conventional boilers are one of the types of boiler that has a water tank. They heat up your radiators directly and connect to a separate cylinder or tank to provide hot water.
How do conventional boilers work?
As with combi boilers, a heat exchanger warms water when fuel is ignited, but with a conventional boiler a pump transports the water to a storage tank. This hot water then flows through to radiators to heat them, or into your taps when you switch them on.
What is the typical cost of a conventional boiler?
New conventional boilers range in price from £1,200 to £5,000 - but these are just average prices. You need to take lots of things into consideration, such as the brand of conventional boiler you want, the model, the warranty and the property size. For example, larger conventional boilers will cost more than smaller ones. The average costs of installing a conventional boiler can vary. You could buy your boiler and then get a local tradesperson to fit it who will charge separately for labour and any additional costs. You might find prices ranging from £600 to £1000s.
The quote for your conventional boiler includes installation
At British Gas, the quote you get for your conventional boiler includes installation too. And no hidden costs. Get a quote from British Gas and we can help you find the perfect conventional boiler to suit your needs. Learn more about the cost of a new conventional boiler
Is a conventional boiler right for me?
A conventional boiler is the right type of boiler for you if:
- There’s backup hot water in the tank so if your conventional boiler isn’t working properly, there’s still some hot water to use, especially if you have an immersion heater installed in the cylinder
- You can use multiple taps and showers at the same time and still get the same temperature or water pressure from all of them
- Conventional boilers work with older heating systems, making it perfect for older homes
|
Advantages |
Disadvantages |
|---|---|
|
Multiple use – hot water can run from several taps at once |
Water wait – hot water isn’t always available on demand, you |
|
Solar compatible – to lower your bills and do your bit for the |
Less efficient – conventional boilers aren’t as efficient as |
|
Back up – even if your boiler breaks down, you can still have |
Pricey installation – can be more expensive to install if you |
|
Money saving – these are the cheapest boilers to replace |
Bulky system – you’ll need space for the tanks as well as the |
|
Low pressure – conventional boilers don’t rely on high mains |
Limited water – once the hot water tank runs out, you’ll have |
What size conventional boiler should I have installed in my home?
There’s no one-size-fits all conventional boiler for your home. It all depends on various factors, such as the size of your home and how many bathrooms it has. Here’s a rough guide:
|
Bedrooms |
Bathrooms |
Radiators |
Recommended output |
|---|---|---|---|
|
1-2 |
1 |
0-10 |
9-18kW |
|
3-4 |
2-3 |
10+ |
18-26kW |
|
4+ |
3+ |
20+ |
27-40kW |
Choose how you want to pay for your new boiler
A range of loan options 2
Up to 3 years interest free (0% APR or up to 10 year 9.9% APR 3) all available at £0 deposit – subject to status.
Or pay in full
Pay just 10% today and the rest after installation.
Why choose British Gas to install a new system boiler for your home
Our A-rated energy efficient boilers can save up to 22% on your gas bills 1.
- A range of loan options 2 (up to 3 years interest free 0% APR or up to 10 year 9.9% APR 3) all available at £0 deposit – subject to status
- 5-year British Gas warranty - with all parts and labour included 4
- Gas Safe certified installation by a Which? Trusted Trader
- System water treatment and system cleanse included
- Waste collection, recycle or disposal included
- Carbon Monoxide Detector and Room Thermostat included
We stock the best new system boiler brands
At British Gas, we partner with top system boiler brands, including Vaillant, Worcester and many more. And we’ll give you impartial advice to help find the best system boiler for your home.
What our customer think of us
Frequently Asked Questions
Are conventional boilers efficient?
All the conventional boilers we supply at British Gas are A-rated for energy efficiency. So yes, they are efficient! When it comes down to efficiency, it all comes down to how you use your energy. And we have a range of tips that can help you with that, whether you’ve got a conventional boiler, system boiler or combi boiler.
Which conventional boiler manufacturer is best?
At British Gas we work with some of the best boiler manufacturers in the industry, including:
Worcester – continuously ranked as one of the UK’s best value boiler brands.
Vaillant – Quiet Mark accredited boilers so you can heat your home without the noise!
Ideal – come with an innovative displays and features, making them easy to use
And many more.
Additional information
Savings based on an electricity price of 24.5 p/kWh and a gas price of 6.29 p/kWh, calculated from a weighted average of projected, current and recent energy price caps. The estimate applies to a semi-detached, gas-heated home upgrading from a D-rated boiler to a new A-rated boiler (with a programmer, room thermostat and thermostatic radiator controls (TRVs)). Actual savings will vary depending on the size and thermal performance of your home.
British Gas acts as a credit broker, not the lender and offers products from a panel of lenders. Payment options are subject to change without notice. British Gas is a trading name of British Gas New Heating Limited (No. 06723244), an appointed representative of British Gas Services Limited (No. 03141243) which is authorised and regulated by the Financial Conduct Authority (Financial Services Register No. 490568). Both companies registered in England and Wales. Registered office: Millstream, Maidenhead Road, Windsor, Berkshire SL4 5GD. Availability of credit depends on status and credit checks. Terms and Exclusions apply.
Representative example for 120 month order: Cash price: £2,503 | Deposit: £0 | Loan amount: £2,503 | Loan period: 10 years | Monthly repayment: £32.36 | Total amount payable: £3,883.20 | APR: 9.9%.
An annual boiler service is needed to keep your warranty valid. Boiler warranties range depending on the model.