New Boilers
The 67 most popular gas central heating boilers from all the main UK suppliers analysed, reviewed and compared
Read the latest new boiler reviews and information. Compare new boilers and find out everything you need to know to make the right choice.
Below are a range of condensing and combi boilers to meet most needs and budgets. If you want to buy a Baxi, Vaillant, British Gas (Scottish Gas) or any other popular brand we have reviews of all the best models.
When you are planning on spending a lot of money on something which is integral to your day-to-day life, it’s important to understand as much as you can without having to read masses of hard-to-digest information. Lots of sites provide reviews of new boilers and heating systems, but it’s not exactly an everyday subject. Our reviews are as jargon free as possible, but just in case you’re not sure, we’ve taken the liberty of providing a brief outline of some of the terms you’ll come across in some of our new boiler reviews. We find this is the best way to ensure that you know exactly what you’re buying and why.
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BRITISH GAS 330 HE
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Review | £POA | "…one of the easiest to install boilers currently being offered in the UK." | 5.0 | 5.0 | 5.0 | 5.0 | 4.5 | 5.0 |
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BRITISH GAS 532 Combi
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Review | £POA | "…Award Winning compact and powerful combi boiler " | 5.0 | 5.0 | 5.0 | 5.0 | 5.0 | 4.0 |
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BAXI Duo-tec Combi 28 HE
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Review | £808 | "…a Which best boiler buy" | 5.0 | 5.0 | 5.0 | 4.5 | 4.5 | 5.0 |
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BAXI Duo-tec Combi HE A
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Review | £POA | "…integrates energy efficiency with functionality" | 5.0 | 5.0 | 5.0 | 4.5 | 4.5 | 5.0 |
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VAILLANT ecoTEC plus 630
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Review | £951 | "…a reliable unit with compact dimensions" | 4.5 | 5.0 | 5.0 | 5.0 | 4.5 | 5.0 |
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VAILLANT ecoTEC plus 824
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Review | £823 |
"…one of the lightest and smallest units on the market" |
4.5 | 5.0 | 5.0 | 5.0 | 4.5 | 5.0 |
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GLOW-WORM Ultrapower sxi  
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Review | £1700 | "… large amounts of hot water on demand" | 3.0 | 5.0 | 4.5 | 4.0 | 5.0 | 5.0 |
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GLOW-WORM Ultracom hxi
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Review | £700 | "…great if you live in a small to medium property" | 3.0 | 5.0 | 4.5 | 4.0 | 5.0 | 5.0 |
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GLOW-WORM Ultracom sxi
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Review | £700 | 3.0 | 5.0 | 4.5 | 4.0 | 5.0 | 5.0 | |
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GLOW-WORM Flexicom sx
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Review | £700 | 3.0 | 5.0 | 4.5 | 4.0 | 5.0 | 5.0 | |
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POTTERTON Gold C24 HE 
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Review | £755 | 5.0 | 5.0 | 5.0 | 4.0 | 4.5 | 5.0 | |
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VAILLANT ecoTEC plus 831
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Review | £912 | 4.0 | 5.0 | 5.0 | 4.5 | 4.5 | 5.0 | |
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VAILLANT ecoTEC pro 28
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Review | £744 | 4.5 | 5.0 | 4.5 | 4.0 | 4.5 | 5.0 | |
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BG POTTERTON Promax 15/2 HE+
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Review | £673 | 3.0 | 5.0 | 5.0 | 4.0 | 5.0 | 5.0 | |
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POTTERTON Promax 30 HE+
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Review | £794 | 3.0 | 5.0 | 5.0 | 4.0 | 5.0 | 5.0 | |
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GLOW-WORM 30hxi
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Review | £676 | 3.0 | 5.0 | 4.5 | 4.0 | 5.0 | 5.0 | |
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POTTERTON Promax Combi 28 HE+
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Review | £765 | 4.0 | 5.0 | 5.0 | 4.0 | 3.5 | 5.0 | |
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SAUNIER DUVAL Xeon Cond F30E
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Review | £980 | 4.0 | 4.0 | 4.0 | 4.5 | 5.0 | 5.0 | |
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VAILLANT ecoTEC plus 428
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Review | £736 | 4.0 | 5.0 | 4.0 | 3.5 | 5.0 | 5.0 | |
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GLOW-WORM 24cxi
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Review | £657 | 4.0 | 5.0 | 5.0 | 3.5 | 3.5 | 5.0 | |
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IDEAL Icos HE 30
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Review | £755 | 4.0 | 4.0 | 4.0 | 4.0 | 5.0 | 5.0 | |
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Ariston CLAS HE Combi
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Review | £748 | 4.0 | 5.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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Ariston GENUS HE 24 Combi
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Review | £748 | 4.0 | 5.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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Ariston CLAS HE System
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Review | £748 | 4.0 | 5.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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BAXI Bermuda BBU HE
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Review | £1255 | 3.0 | 5.0 | 4.0 | 4.0 | 3.0 | 5.0 | |
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BAXI Megaflow System HE A
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Review | £730 | 3.0 | 5.0 | 4.0 | 4.0 | 3.0 | 5.0 | |
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BAXI Solo 24 HE
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Review | £748 | 3.0 | 4.0 | 5.0 | 3.5 | 5.0 | 5.0 | |
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SAUNIER DUVAL Thema Cond F24E
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Review | £800 | 3.0 | 5.0 | 5.0 | 5.0 | 3.5 | 4.0 | |
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WORCESTER Greenstar 30 Si
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Review | £943 | 4.0 | 5.0 | 4.5 | 4.0 | 4.0 | 4.0 | |
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BUDERUS 500 System
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Review | £825 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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BUDERUS 600/28C
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Review | £986 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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BUDERUS 600/24R
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Review | £800 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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BUDERUS 800 System
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Review | £1230 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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HALSTEAD Ace HE 30
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Review | £653 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 5.0 | |
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WORCESTER 24Ri
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Review | £738 | 3.0 | 4.5 | 4.5 | 3.0 | 5.0 | 5.0 | |
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WORCESTER Greenstar 30CDi
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Review | £804 | 5.0 | 4.0 | 3.0 | 4.0 | 4.0 | 5.0 | |
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WORCESTER Greenstar 30CDi Conv
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Review | £776 | 3.0 | 4.0 | 5.0 | 4.0 | 4.0 | 5.0 | |
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GLOW-WORM Flexicom 30cx
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Review | £728 | 3.0 | 5.0 | 4.5 | 4.0 | 4.0 | 4.0 | |
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BG WORCESTER 28i HE Combi
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Review | £POA | 3.0 | 4.0 | 4.0 | 4.0 | 4.0 | 5.0 | |
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ALPHA CD13R
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Review | £660 | 4.0 | 5.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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ALPHA CD18R
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Review | £700 | 4.0 | 5.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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ALPHA CD24R
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Review | £770 | 4.0 | 5.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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ALPHA CD12S
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Review | £775 | 4.0 | 5.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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ALPHA CD20S
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Review | £745 | 4.0 | 5.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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ALPHA CD28S
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Review | £825 | 4.0 | 5.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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BAXI Platinum C28 HE
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Review | £939 | 3.0 | 5.0 | 4.0 | 4.0 | 3.0 | 5.0 | |
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Ferroli Econcept 50
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Review | £1150 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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Ferroli maXima 35s
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Review | £1100 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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Ferroli Optimax 25 OV
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Review | £680 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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Ferroli Optimax HE 18 OV
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Review | £939 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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Ferroli Optimax HE 18S
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Review | £625 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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Ferroli Optimax HE 25S
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Review | £775 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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Ferroli Optimax HE 31S
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Review | £850 | 5.0 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | |
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GLOW-WORM Flexicom 24hx
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Review | £638 | 3.0 | 5.0 | 3.5 | 3.5 | 4.5 | 4.5 | |
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WORCESTER Greenstar 24i Jr
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Review | £703 | 3.0 | 4.0 | 4.0 | 4.0 | 4.0 | 5.0 | |
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ALPHA CD28C
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Review | £865 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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ALPHA CD28X
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Review | £715 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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ALPHA CD25X
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Review | £637 | 4.0 | 4.0 | 4.0 | 4.0 | 4.0 | 3.0 | |
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BAXI Combi Instant 80 HE
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Review | £649 | 4.0 | 5.0 | 5.0 | 3.0 | 3.0 | 3.0 | |
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GLOW-WORM Ultracom 30 cxi
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Review | £734 | 4.0 | 4.0 | 3.0 | 4.0 | 4.0 | 4.0 | |
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POTTERTON Performa 30HE
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Review | £647 | 4.0 | 4.0 | 4.0 | 3.0 | 3.0 | 5.0 | |
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POTTERTON Promax 30 SL
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Review | £748 | 3.0 | 4.0 | 4.0 | 3.0 | 5.0 | 4.0 | |
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IDEAL Mini HE C24
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Review | £624 | 3.0 | 4.0 | 4.0 | 3.0 | 3.0 | 3.0 | |
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SAUNIER DUVAL Semia Cond F30E
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Review | £660 | 5.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | |
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IDEAL Isar HE 30
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Review | £873 | 3.0 | 3.0 | 3.0 | 2.0 | 4.0 | 4.0 | |
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RAVENHEAT CSI 85 AT
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Review | £654 | 4.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | |
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IDEAL Excel HE C28
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Review | £765 | 3.5 | 3.5 | 3.5 | 2.5 | 2.5 | 2.5 |
New Boiler Reviews
Big considerations when purchasing a new boiler are the 'output', the physical size and the location. They come in all different shapes and sizes and they also deliver heat and hot water differently – which can have an impact. Combi boilers are great for small homes or flats; they are compact and heat water directly from the mains delivering heat and hot water almost immediately. However, they aren’t always great for larger hot water requirements.
For larger properties, system or sealed system boilers are often used. These are bigger systems that use an expansion tank and storage cylinder which are installed either in the loft or in a big airing cupboard. System boilers are more suitable for homes that use a lot of hot water.
You may also need to consider whether to have a wall or floor mounted unit, depending on which position is most convenient, and on top of that there may be various weight and dimension factors to consider.
If you haven’t done so already, it may be worth grabbing a tape measure and doing a bit of reconnaissance work to establish what kind of heating system you currently have, where it is positioned and how big it is.
Some models use a pre-plumbing jig and this can actually make the installation process simpler or allow the system to be easily flushed protecting the boiler from any sediment. For on-going maintenance the standardised layout can also make servicing easier too. So, look out for models which have this feature because it could save time and money.
Most manufacturers tend to offer ranges of boiler 'output' to cater for most domestic heat and hot water needs. Naturally, the higher the output the more heat and hot water it can produce. If you are unsure what rating you require, there are plenty of good output calculators and SEDBUK (Seasonal Efficiency of Domestic Boilers in the UK) has one of their own. However, to give you an idea an average combination boiler with a 29kW output can deliver 12.5 litres/minute of hot water at 35°C.
The SEDBUK efficiency bands range from G which is below 70% efficiency to A which is above 90%. The higher the efficiency the less energy your boiler wastes, it’s as simple as that. The above information should give you an idea of what you should be looking out for when buying a new boiler.
View our complete list of best boiler manufacturers, including British Gas, Baxi, Worcester, Glow Worm, Vaillant and Potterton. The above table compares the latest models and brands on the market in an easy to understand format. BUYability uses a variety of product features to rate new boilers such as, price, efficiency, installation and emissions which are all important factors to consider when choosing what's right for your needs. Once you have seen a new boiler which fits your budget and overall specification you can go on to read our easy to understand jargon free review for more information.
Always consult a qualified Gas Safe heating engineer before buying.
Prices shown represent the lowest (approximate) base unit price for each boiler obtained from various online retail sources inclusive of VAT but excluding installation. British Gas boilers are normally quoted individually inclusive of installation so they are marked £POA (Price On Application).
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