Fast and safe installation
How is a combi boiler different to other boiler types?
What size boiler do I need?
What's the difference between a combi boiler and a condensing boiler?
You can't directly compare combi boilers and condensing boilers, but the main features of them are:
- A combination (combi) boiler gives both heating and hot water directly from your home's mains without needing a hot water cylinder or water tank in other parts of your home. So they're perfect for smaller to medium sized houses, giving heat and hot water on demand and only using hot water when it's needed.
- Compared to older style boilers, condensing boilers can trap waste gases when the boiler is being used, which are normally released through a flue, and safely reuse it. So they're more efficient and eco-friendly than non-condensing boilers, using less energy for fuel and power. As it reuses the flue gases, anything that is eventually released through the flue is water vapour - which is why they're 'condensing'. Nowadays, all modern boilers are condensing.
Combi boilers that feature a flue heat recovery system become a combi condensing boiler too.
Which is the best combi boiler?
The best combi boiler for you will reflect your type of home and energy needs. We'll always recommend investing in an A-rated boiler like those from Worcester Bosch. As a Which? Best Boiler it performs powerfully but also efficiently to help save you money on bills.
How long should a combi boiler last?
On average, a Worcester Bosch combi boiler should last around 10-15 years. Its lifespan mostly depends on the make, model and how well it has been serviced. We've seen well cared for Worcester Bosch boilers still going strong after 22 years. A clear sign on how long a combi boiler should last can be found by looking at the guarantees from the manufacturer. For example, Worcester Bosch offers a five year guarantee as standard and extended guarantees from 10-12 years on their boilers, so it’s reasonable to expect it to last the length of its guarantee, if not longer.
How much does a new combi boiler cost?
Combi boilers can vary in price depending on factors like the size of your home, how much hot water you need and the water pressure in your area. Combi boilers can cost as little as £1,995, including installation, if you buy from us online. We also offer a flexible payment options.
Is there an extra cost for the installation of a combi boiler?
We'll include all installation and removal costs within the price of your new boiler.
The legal stuff
The £1,995 offer price is only applicable to a Worcester 30i Combination boiler purchased through our website without an in-home survey. If the customer's boiler replacement requirements cannot be met through the website and an in-home survey is needed, the offer price will not be available. The £1,995 price applies to any online Worcester 30i Combination boiler quotation.
1 E.ON Energy Installation Services Limited acts as a credit broker and not a lender and work exclusively with Creation Consumer Finance Limited who acts as the lender. Credit subject to status, terms and conditions apply. E.ON reserves the right to amend its finance offering at any time and may withdraw at short notice. E.ON Energy Installation Services Limited is registered in England and Wales under company number 09965944 with its registered office at Westwood Way, Westwood Business Park, Coventry, CV4 8LG. E.ON Energy Installation Services Limited is authorised and regulated by the Financial Conduct Authority in relation to credit broking services under number 750410.
2 Installation within five working days if you have no heating and no hot water, from the point you accept your boiler quote and either make your upfront payment or accept the Terms and Conditions of your finance agreement.
3 Savings information for boilers in the UK provided by the Energy Saving Trust, based on a semi-detached house with a boiler rating of G.