Combi Boiler Prices 2018

Combi boiler prices start from £500 and go up to over £2,500, but this doesn't include installation.

Fitting a combi boiler will cost between £500 and £1,500, depending on the type of installation.

Combi boilers are an excellent alternative to conventional boilers because they save space and are around 90% efficient.



Combi Boiler Prices UK

Combi boiler prices will vary according to a number of factors, such as brand, model, efficiency rating and the power output. The cheapest of combi boilers cost around £500, while top-of-the-range combi boilers can cost as much as £2,500. Plus, there's also the price of installation to consider.

For example, a Potterton Promax FSB 30 HE floor-standing combi boiler, which has an energy output of 30kW, normally costs around £700. A Worcester Bosch Greenstar Highflow 550CDi, on the other hand, delivers an output of 41kW and is priced at approximately £1,900. The former is ideal for a medium-size house with up to 15 radiators, while the latter will suit a larger property that has as many as 5 bedrooms.

The amount you pay will also depend on whether you choose a gas or oil combi boiler (but Liquid Petroleum Gas (LPG) and electric combi boilers are available, too). Oil boilers are typically more expensive than their gas counterparts and are usually favoured by homeowners living in more remote parts of the country (i.e. off the gas grid).

This table gives you rough overall costs for combi boilers based on their output and fuel type:

Property Size
No. of Bedrooms
No. of Bathrooms
No. of Radiators
Output
Price Range (Gas)
Price Range (Oil)
Small
1 to 2
1
10 max.
24kW to 27kW
£425 to £2,990
£1,600 to £3,700
Medium
3 to 4
Up to 2
15 max.
28kW too 34kW
£555 to £2,750
£72,460 to £2,600
Large
4+
2+
20 max.
35kW to 42kW
£765 to £1,430
£2,330 to £2,925


Get a Free Combi Boiler Quote for Your Home


Back to top



Combi Boiler Prices by Brand

There are several boiler brands to choose from in the UK. Below, you'll find prices for 8 of the most popular manufacturers. The examples given include the cheapest and the most expensive combi boilers produced by each brand.


Baxi Combi Boiler Prices

Model
Fuel Type
Output
Warranty
Efficiency
Typical Price
124 Combi
Gas
24kW
2 years
89.1%
£708
Platinum Combi 40
Gas
40kW
10 years
88.9%
£1,218


Glow-worm Combi Boiler Prices

Model
Fuel Type
Output
Warranty
Efficiency
Typical Price
Easicom 24
Gas
24kW
3 years
86 to 90%
£624
Ultracom 35
Gas
35kW
2 years
89.2%
£1,310


Grant Combi Boiler Prices

Model
Fuel Type
Output
Warranty
Efficiency
Typical Price
Vortex Blue
Oil
21kW
2 years
90.8%
£1,700
Vortex Pro External 36
Oil
36kW
2 years
94.5%
£2,490


Ideal Combi Boiler Prices

Model
Fuel Type
Output
Warranty
Efficiency
Typical Price
Logic Combi 24
Gas
24kW
2 years
86 to 90%
£656
Logic Code Combi ES 38
Gas
38kW
2 years
90% +
£1,330


Potterton Combi Boiler Prices

Model
Fuel Type
Output
Warranty
Efficiency
Typical Price
Performa Combi 24 Eco HE
Gas
24kW
1 year
86% +
£640
Titanium Combi 40
Gas
40kW
2
90% +
£996


Vaillant Combi Boiler Prices

Model
Fuel Type
Output
Warranty
Efficiency
Typical Price
ecoTEC Pro 28
Gas
28kW
2 years
86 to 90%
£876
ecoTEC Exclusive 838
Gas
38kW
7 years
86 to 90%
£1,305


Viessmann Combi Boiler Prices

Model
Fuel Type
Output
Warranty
Efficiency
Typical Price
Vitodens 100-W Combi
Gas
26kW
5 years
90% +
£844
Vitodens 242-F 26kW
Gas
26kW
2 years
90% +
£6,188


Worcester Bosch Combi Boiler Prices

Model
Fuel Type
Output
Warranty
Efficiency
Typical Price
Greenstar 24i Junior
Gas
24kW
5 years
90% +
£768
Greenstar Highflow 550CDi
Gas
30kW
5 years
90% +
£2,034


Get a Free Combi Boiler Quote for Your Home


Back to top



Combi Boiler Installation Cost

installing a combi boiler

When choosing your combi boiler, it's also important to think about the price of installation. Not only is cost a factor, but using the services of an accredited installer (a Gas Safe Registered engineer for an LPG or gas boiler, and an OFTEC registered engineer for an oil boiler) is an absolute must.

A registered engineer will install your new combi boiler with minimum disruption and provide you with all the necessary documentation, including service records. It's also worth thinking about investing in boiler cover, which, at the very least, will protect you against breakdown.

  • Average cost of replacing a combi boiler: £540 to £660
  • Average cost of replacing another kind of boiler with a combi boiler: About £1,440

For a no-obligation quote that's tailored to your needs, please complete the form at the top of this page to hear about combi boiler deals from a trusted local installer.


Back to top



Combi Boiler Service Cost

Annual servicing by a qualified engineer is just as important as ensuring that your combi boiler has been fitted by a registered installer. Servicing prices will vary according to the type of coverage you require and many people will choose a boiler cover to take care of this. For example, you can choose to cover the cost of the boiler - or the boiler and central heating.

Or, you might wish to opt for comprehensive cover, which includes boiler, central heating, plumbing and wiring. Bearing these points in mind, and the variance in prices set by different businesses, servicing cover costs can begin at £60 and peak at around £120.

Of course, the more components you wish to have covered, the greater the cost. This can be as little as £4.95 per month, and as much as £16.90 per month. It's also worth bearing in mind that you will likely be liable for a call-out fee for any boiler-related issues not covered by your service plan. Conversely, if all elements are covered, call-outs will normally be included.

You can read more aboutboiler servicing costs here.


Back to top



Interested in How a Combi Boiler Works?

The 'combi' (combination) part of this boiler type's name comes from its ability to efficiently deliver hot water to kitchens, bathrooms and radiators. Water is heated directly from the mains, so there's no need for an additional water storage cylinder (or a cold-water storage tank) which is typically installed in a property's roof or loft space.

In recent years, the popularity of combi boilers in the UK has grown significantly. Now, more than 70% of homes opt for a combi boiler, as opposed to a conventional boiler.

A major factor in this surge in popularity is efficiency - replacing an older boiler with a combi means it's possible to make savings of up to £350 per year on energy bills; not something to be sniffed at.

Read our comprehensive combi boilers guide to discover the pros and cons, different system sizes, and whether to opt for electric, gas or oil.


Back to top



FAQs

Which is the best combi boiler to buy?

We recommend buying a combi boiler from Grant, Ideal, Vaillant, Viessmann or Worcester Bosch. These brands make high quality combi boilers that have been praised by both homeowners and boiler engineers for their reliability and performance. The best combi boilers to buy are:

  • Grant Vortex Pro Internal Combi 21e: £2,060
  • Ideal Vogue Combi 32: £1,090
  • Vaillant ecoTEC plus 838: £1,330
  • Viessmann Vitodens 100-W Combi 30kW: £960
  • Worcester-Bosch Greenstar Highflow 440 CDi ErP: £1,900

Can you buy a combi boiler on finance?

Yes you can. If you don’t have the money to to buy a new combi boiler upfront, many installation companies offer a variety of finance options that allow you to spread the cost over a series of monthly payments - often between 12 and 36 months. Interest is often added to the amount you pay back, however, meaning you’ll end up paying more for your combi boiler on finance than it’s actually worth.

How much can you save with a new combi boiler?

You can save hundreds of pounds on your energy bill every year by updating from a G-rated combi boiler to a new A-rated combi boiler. For example, a semi-detached house can save up to £350 every year, while a detached house can save up to £570 a year. Most households will break-even on their new combi boiler within 8 years.

How long should a combi boiler last?

A combi boiler should last up to 15 years before it needs replacing. If your combi boiler is approaching this age, you should think about investing in a new one. To keep your combi boiler in a good condition for as long as possible, you should have it serviced at least once a year. This will ensure it’s working properly and safely, and will help to avoid any breakdowns.

Get a Free Combi Boiler Quote for Your Home


Back to top


Spread the Word!