Combi Boilers Prices

Combi boilers prices vary from £600 to £2000 dependent on make and model

Combi boilers prices vary hugely in price – normally from £500 to £1500 depending on brand, insurance/warranty, installation and, of course, the size/power. Here we compare a few of each size to give you an idea on combi boilers prices.  Here is a list of some of the most popular combi boiler prices on the market today to give you a general idea:  What is a combi boiler?

Combi Boiler Model and Prices

Worcester Bosch Greenstar 42cdi Classic Typical Price – £1374
Worcester Bosch Greenstar 34cdi Classic Typical Price – £1,030
Vaillant ecoTEC Plus Combination Typical Price – £784
Potterton Promax Combi HE Plus Typical Price – £660
Potterton Performa Combi HE Typical Price -£650
Baxi Neta-Tec Plus Combi GA Typical Price -£640

Combi Boiler Sizes and Prices

Dependent on the size of your house, combi boilers prices will differ. The more rooms and the more radiators you have, the bigger combi boiler output will be required.  Here is a guide on on the size of combi boiler (kw output) and a price guide.

Smaller Houses – (Combi Boiler 24 kw to 27 kw Output)

A small house, flat or apartment would typically require a combi boiler output between 24 & 27kw.

Model Output Typical Price
Baxi Duo-Tec HE 24 kw £726
Valliant ecoTec Pro NG 24 kw £744

Semi-Detached / Detached Mid Size House (28 kw to 34 kw)

Medium size house requiring up to 15 radiators will require an estimated outout of 28kw to 34 kw

Model Output Typical Price
Worcester Bosch 34 Greenstar Classic 30 kw £726
Potterton Promax FSB30HE Floor Standing 30 kw £822

Large Detached / Detached Med Size House (35 kw to 42 kw)

Large size house with up to 3 – 5 bedrooms will require an estimated output of 35kw to 42kw

Model Output Typical Price
Worcester Bosch Greenstar Highflow 550CDI 41.1 kw £1900
Worcester Bosch Greenstar FS 42 CDi 42 kw £1600

Installation Costs

A combi boiler is designed to contain all its parts in one neat, compact unit.  This is far more energy efficient and takes a lot less time to heat up than older boilers with a hot storage water tank. When you are having your new combi boiler installed all that needs fitting is this single unit – this shouldn’t take a professional engineer more than a couple of hours to install.

Unfortunately this doesn’t mean that the installation is cheap.  While they may be single units that can be installed in little over two hours, each model is designed differently and a number of practical factors: size, radiator-replacement, the length of the flue required to vent waste gases and whether or not you need to remove old water tanks currently taking up space in your attic or airing cupboard.  This, therefore means that it could in fact take a couple of days to install your combi-boiler – that is if you are replacing a traditional boiler.

However, remember that after this initial system reboot, replacing and maintaining your combi-boiler is quick, easy and relatively cheap.  The amount of money you are most likely to save in the long run, should also more than make up for this initial cost.

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