Need a new boiler? Get FREE no-obligation quotes now!

Get FREE no-obligation quotes now!

No delays! Get quotes today
Compare quotes & get the best prices
Gas Safe & OFTEC registered engineers

The smarter way to find approved boiler engineers

What work do you require?

New Boiler

New Central Heating

Boiler Repair

Compare Gas Combi Boilers

You can select up to 4 gas boilers. Simply add your choices to compare.

Filter boilers

Fuel type

Gas
(798)
Oil
(440)
Electric
(60)

Boiler type

Combi
(462)
Regular
(345)
System
(320)

Manufacturer

Alpha
(22)
Ariston
(22)
ATAG
(7)
Baxi
(32)
Biasi
(15)
Daikin
(3)
Ferroli
(20)
Glow-worm
(29)
Heatline
(2)
Ideal
(34)
Intergas
(17)
Johnson and Starley
(3)
Keston
(2)
Main
(4)
Navien
(4)
Potterton
(22)
Ravenheat
(21)
Vaillant
(29)
Viessmann
(16)
Vokera
(16)
Warmhaus
(12)
Worcester Bosch
(39)
Zanussi
(3)

Clear search

Alpha

Boiler Model	kW	Efficiency	Warranty	Typical Price
Available
Alpha E-TEC 28kW Combi Gas Boiler VIEW	26.1 kw	93%	7 years	£745	VIEW
Alpha E-TEC 33kW Combi Gas Boiler VIEW	29.7 kw	93%	7 years	£745	VIEW
Alpha EVOKE 28kW Combi Gas Boiler VIEW	26.1 kw	93%	7 years	£575	VIEW
Alpha EVOKE 33kW Combi Gas Boiler VIEW	29.7 kw	93%	7 years	£590	VIEW
Alpha E-TEC PLUS 28kW Combi Gas Boiler VIEW	26.1 kw	93%	10 years	£800	VIEW
Alpha E-TEC PLUS 33kW Combi Gas Boiler VIEW	29.7 kw	93%	10 years	£925	VIEW
Discontinued
Alpha CD28C Combi Gas Boiler VIEW	28kw	90.3%	5 years	£781	VIEW
Alpha CD35C Combi Gas Boiler VIEW	35kw	90.5%	5 years	£850	VIEW
Alpha CD28X Combi Gas Boiler VIEW	28kw	88.50%	2 years	£690	VIEW
Alpha CD25X Combi Gas Boiler VIEW	25kw	88.60%	2 years	£745	VIEW
Alpha CD25C Combi Gas Boiler VIEW	25kw	89.00%	5 years	£850	VIEW
Alpha CD50 Combi Gas Boiler VIEW	50kw	89.30%	3 years	£1,900	VIEW
Alpha InTec2 26CE Combi Gas Boiler VIEW	26kw	88.8%	7 years	£713	VIEW
Alpha InTec2 30CE Combi Gas Boiler VIEW	30kw	88.8%	7 years	£818	VIEW
Alpha InTec2 35CE Combi Gas Boiler VIEW	35kw	88.9%	7 years	£883	VIEW
Alpha InTec 30C Combi Gas Boiler VIEW	30kw	88.2%	7 years	£895	VIEW
Alpha InTec 34C Combi Gas Boiler VIEW	34kw	88.8%	7 years	£975	VIEW
Alpha InTec2 25XE Combi Gas Boiler VIEW	25kw	88.8%	7 years	£645	VIEW
Alpha InTec2 28XE Combi Gas Boiler VIEW	28kw	88.8%	4 years	£675	VIEW
Alpha Eco2 Plus Combi Gas Boiler VIEW	28kw	88.8%	4 years	£750	VIEW
Alpha InTec Gs 30kW Combi Gas Boiler VIEW	30kw	88.8%	5 years	£1,900	VIEW
Alpha InTec Gs 40kW Combi Gas Boiler VIEW	40kw	88.8%	5 years	£2,500	VIEW

Ariston

Boiler Model	kW	Efficiency	Warranty	Typical Price
Available
Ariston CLAS HE evo 30 Combi Gas Boiler VIEW	30kw	90%	5 years	£1,100	VIEW
Ariston CLAS HE evo 24 Combi Gas Boiler VIEW	24kw	90.1%	5 years	£910	VIEW
Ariston CLAS HE evo 38 Combi Gas Boiler VIEW	38kw	90%	5 years	£750	VIEW
Ariston E-COMBI evo 24 Combi Gas Boiler VIEW	24kw	90%	2 years	£650	VIEW
Ariston E-COMBI evo 30 Combi Gas Boiler VIEW	30kw	90%	2 years	£705	VIEW
Ariston E-COMBI evo 38 Combi Gas Boiler VIEW	38kw	90.1%	2 years	£900	VIEW
Ariston Clas Net One 24kW Combi Gas Boiler VIEW	24kw	90%	12 years	£1,215	VIEW
Ariston Clas Net One 30kW Combi Gas Boiler VIEW	30kw	90%	12 years	£1,400	VIEW
Ariston Clas Net One 38kW Combi Gas Boiler VIEW	38kw	90%	12 years	£1,500	VIEW
Ariston Clas One 24kW Combi Gas Boiler VIEW	24kw	90%	8 years	£800	VIEW
Ariston Clas One 30kW Combi Gas Boiler VIEW	30kw	90%	8 years	£850	VIEW
Ariston Clas One 38kW Combi Gas Boiler VIEW	38kw	90%	8 years	£1,149	VIEW
Ariston E-Combi One 24kW Gas Boiler VIEW	24kw	90%	2 years	£575	VIEW
Ariston E-Combi One 30kW Gas Boiler VIEW	30kw	90%	2 years	£600	VIEW
Ariston ALTEAS ONE NET 30kW Combi Gas Boiler VIEW	30kw	90.1%	12 years	£1,300	VIEW
Ariston ALTEAS ONE NET 35kW Combi Gas Boiler VIEW	35kw	90.1%	12 years	£2,000	VIEW
Ariston GENUS ONE NET 24kW Combi Gas Boiler VIEW	24kw	90.1%	12 years	£3,120	VIEW
Ariston GENUS ONE NET 30kW Combi Gas Boiler VIEW	30kw	90.4%	12 years	£1,825	VIEW
Ariston GENUS ONE NET 35kW Combi Gas Boiler VIEW	35kw	90.1%	12 years	£1,950	VIEW
Discontinued
Ariston GENUS HE 24 Combi Gas Boiler VIEW	24kw	90.3%	1 year	£702	VIEW

ATAG

Boiler Model	kW	Efficiency	Warranty	Typical Price
ATAG IC Economiser Plus 39kW Combi Gas Boiler VIEW	39kw	89.7%	10 years	£2,460	VIEW
ATAG IC Economiser Plus 35kW Combi Gas Boiler VIEW	35kw	89.7%	10 years	£2,380	VIEW
ATAG IC Economiser Plus 27kW Combi Gas Boiler VIEW	27kw	89.7%	10 years	£2,150	VIEW
ATAG IC36 36kW Combi Gas Boiler VIEW	31.2 kw	94%	10 years	£N/A	VIEW
ATAG IC28 28kW combi Gas Boiler VIEW	23.2 kw	94%	10 years	£N/A	VIEW
ATAG IC24 24kW Combi Gas Boiler VIEW	23.2 kw	94%	10 years	£N/A	VIEW
ATAG IC40 40kW Combi Gas Boiler VIEW	31.2 kw	94%	10 years	£N/A	VIEW

Baxi

Boiler Model	kW	Efficiency	Warranty	Typical Price
Best Sellers
Baxi 800 platinum+ 40kW Combi Gas Boiler VIEW	40kw	93%	10 years	£N/A	VIEW
Available
Baxi Duo-tec Combi 28 LPG Gas Boiler VIEW	28kw	88.6%	7 years	£870	VIEW
Baxi EcoBlue Advance Combi 24 Gas Boiler VIEW	24kw	89.1%	10 years	£962	VIEW
Baxi EcoBlue Advance Combi 28 Gas Boiler VIEW	28kw	89.1%	10 years	£1,102	VIEW
Baxi EcoBlue Advance Combi 33 Gas Boiler VIEW	33kw	89.1%	10 years	£1,200	VIEW
Baxi EcoBlue Advance Combi 40 Gas Boiler VIEW	40kw	89.1%	10 years	£1,260	VIEW
Baxi Platinum Combi 24 Gas Boiler VIEW	24kw	89%	10 years	£890	VIEW
Baxi Platinum Combi 28 Gas Boiler VIEW	28kw	89%	10 years	£1,025	VIEW
Baxi Platinum Combi 33 Gas Boiler VIEW	33kw	88.9%	10 years	£1,100	VIEW
Baxi Platinum Combi 40 Gas Boiler VIEW	40kw	88.9%	10 years	£1,385	VIEW
Baxi Duo-tec Combi 24 Gas Boiler VIEW	24kw	88.6%	7 years	£1,135	VIEW
Baxi Duo-tec Combi 28 Gas Boiler VIEW	28kw	88.6%	7 years	£850	VIEW
Baxi Duo-tec Combi 33 Gas Boiler VIEW	33kw	88.5%	7 years	£925	VIEW
Baxi Duo-tec Combi 40 Gas Boiler VIEW	40kw	88.5%	7 years	£1,105	VIEW
Baxi 224 Combi Gas Boiler VIEW	24kw	89%	3 years	£635	VIEW
Baxi 228 Combi Gas Boiler VIEW	28kw	89%	3 years	£631	VIEW
Baxi 424 Combi Gas Boiler VIEW	24kw	89%	5 years	£625	VIEW
Baxi 428 Combi Gas Boiler VIEW	28kw	89%	5 years	£655	VIEW
Baxi 624 Combi Gas Boiler VIEW	21.2 kw	93%	7 years	£735	VIEW
Baxi 630 Combi Gas Boiler VIEW	21.2 kw	93%	7 years	£820	VIEW
Baxi 636 Combi Gas Boiler VIEW	26.4 kw	93%	7 years	£995	VIEW
Baxi 825 25kW Combi Gas Boiler VIEW	25kw	93%	10 years	£N/A	VIEW
Baxi 830 30kW Combi Gas Boiler VIEW	30kw	93%	10 years	£N/A	VIEW
Baxi 836 36kW Combi Gas Boiler VIEW	36kw	93%	10 years	£N/A	VIEW
Discontinued
Baxi Combi 105 HE 30kW Gas Boiler VIEW	30kw	87.3%	2 years	£948	VIEW
Baxi Neta-Tec Combi 33 GA Gas Boiler VIEW	33kw	89%	5 years	£1,110	VIEW
Baxi EcoBlue+ Combi 24 Gas Boiler VIEW	24kw	89.1%	7 years	£910	VIEW
Baxi EcoBlue+ Combi 28 Gas Boiler VIEW	28kw	89.1%	7 years	£959	VIEW
Baxi EcoBlue+ Combi 33 Gas Boiler VIEW	33kw	89.1%	7 years	£995	VIEW
Baxi 124 Combi Gas Boiler VIEW	24kw	89.1%	2 years	£785	VIEW
Baxi 128 Combi Gas Boiler VIEW	28kw	89.1%	2 years	£835	VIEW

Biasi

Boiler Model	kW	Efficiency	Warranty	Typical Price
Biasi Advance Plus Combi ErP 25kW Gas Boiler VIEW	25kw	88.7%	5 years	£595	VIEW
Biasi Inovia ErP 25kW Combi Gas Boiler VIEW	25kw	88.7%	5 years	£615	VIEW
Biasi Inovia Combi ErP 30kW Gas Boiler VIEW	30kw	88.6%	5 years	£625	VIEW
Biasi Inovia Combi ErP 35kW Gas Boiler VIEW	35kw	88.6%	5 years	£695	VIEW
Biasi Advance Plus ErP 30kW Combi Gas Boiler VIEW	30kw	88.6%	5 years	£625	VIEW
Biasi Advance Plus ErP 35kW Combi Gas Boiler VIEW	35kw	88.6%	5 years	£650	VIEW
Biasi Riva Plus ErP 24kW Combi Gas Boiler VIEW	24kw	88%	2 years	£525	VIEW
Biasi Riva Plus ErP 28kW Combi Gas Boiler VIEW	28kw	88%	2 years	£525	VIEW
Biasi Advance 25kW Combi Gas Boiler VIEW	25kw	88.7%	5 years	£N/A	VIEW
Biasi Advance 30kW Combi Gas Boiler VIEW	30kw	89%	5 years	£N/A	VIEW
Biasi Advance 35kW Combi Gas Boiler VIEW	35kw	89%	5 years	£N/A	VIEW
Biasi Advance Plus 7 30kW Combi Gas Boiler VIEW	30kw	92%	7 years	£N/A	VIEW
Biasi Advance Plus 7 25kW Combi Gas Boiler VIEW	25kw	92%	7 years	£N/A	VIEW
Biasi Advance Plus 7 35kW Combi Gas Boiler VIEW	35kw	92%	7 years	£N/A	VIEW

Daikin

Boiler Model	kW	Efficiency	Warranty	Typical Price
Daikin D2CND 24kW Combi Gas Boiler VIEW	24kw	93%	2 years	£N/A	VIEW
Daikin D2CND 28kW Combi Gas Boiler VIEW	28kw	93.1%	2 years	£N/A	VIEW
Daikin D2CND 35kW Combi Gas Boiler VIEW	35kw	93%	2 years	£N/A	VIEW

Ferroli

Boiler Model	kW	Efficiency	Warranty	Typical Price
Available
Ferroli Modena 32c HE Combi Gas Boiler VIEW	32kw	90.3%	5 years	£665	VIEW
Ferroli Modena 27c HE Combi Gas Boiler VIEW	27kw	90.3%	5 years	£645	VIEW
Ferroli Modena 38c HE Combi Gas Boiler VIEW	38kw	90.3%	5 years	£845	VIEW
Ferroli iBoiler 29kW Combi Gas Boiler VIEW	29kw	86%	2 years	£N/A	VIEW
Ferroli iBoiler 25kW Combi Gas Boiler VIEW	25kw	85%	2 years	£N/A	VIEW
Ferroli BLUEHELIX RRT Tech 24kW Combi Gas Boiler VIEW	24kw	94%	10 years	£N/A	VIEW
Ferroli BLUEHELIX RRT Tech 28kW Combi Gas Boiler VIEW	28kw	94%	10 years	£N/A	VIEW
Ferroli BLUEHELIX RRT Tech 34kW Combi Gas Boiler VIEW	34kw	94%	10 years	£N/A	VIEW
Discontinued
Ferroli maXima 35 S Combi Gas Boiler VIEW	35kw	91%	1 year	£753	VIEW
Ferroli maXima 35 C Combi Gas Boiler VIEW	35kw	90.9	1 year	£645	VIEW
Ferroli Optimax HE 38 C Combi Gas Boiler VIEW	30kw	90.5%	5 years	£699	VIEW
Ferroli Optimax HE 31 C Combi Gas Boiler VIEW	25kw	90.4	5 years	£652	VIEW
Ferroli Domicompact F 30 B Combi Gas Boiler VIEW	30kw	87.7%	1 year	£650	VIEW
Ferroli i25 Combi Gas Boiler VIEW	24kw	96.5%	2 years	£435	VIEW
Ferroli i29 Combi Gas Boiler VIEW	27kw	96.5%	2 years	£500	VIEW

Glow-worm

Boiler Model	kW	Efficiency	Warranty	Typical Price
Available
Glow-worm Energy Combi 25kW Gas Boiler VIEW	25kw	89.2%	7 years	£775	VIEW
Glow-worm Energy Combi 30kW Gas Boiler VIEW	30kw	89.2%	7 years	£795	VIEW
Glow-worm Energy Combi 35kW Gas Boiler VIEW	35kw	89.2%	7 years	£915	VIEW
Glow-worm Easicom₃ 24kW Combi Gas Boiler VIEW	24kw	94%	3 years	£614	VIEW
Glow-worm Easicom₃ 28kW Combi Gas Boiler VIEW	28kw	94%	3 years	£665	VIEW
Glow-worm Energy 35 Store 35kW Combi Gas Boiler VIEW	35kw	89.4%	7 years	£1,580	VIEW
Glow-worm Essential 24kW Combi Gas Boiler VIEW	24kw	89.3%	3 years	£1,853	VIEW
Glow-worm Essential 28kW Combi Gas Boiler VIEW	28kw	89.3%	3 years	£1,234	VIEW
Glow-worm Ultimate3 30kw Combi Gas Boiler VIEW	30kw	89.6%	10 years	£705	VIEW
Glow-worm Ultimate3 35kw Combi Gas Boiler VIEW	35kw	89.7%	10 years	£775	VIEW
Glow-worm Easicom3 24kW Combi Gas Boiler VIEW	24kw	89.6%	6 years	£625	VIEW
Glow-worm Easicom3 28kW Combi Gas Boiler VIEW	28kw	89.6%	6 years	£N/A	VIEW
Glow-worm betacom4 24kW Combi gas boiler VIEW	24kw	89.2%	5 years	£525	VIEW
Glow-worm betacom4 30kW Combi gas boiler VIEW	30kw	89.2%	5 years	£565	VIEW
Discontinued
Glow-worm Xtramax HE 28kW Combi Gas Boiler VIEW	28kw	89.2%	3 years	£550	VIEW
Glow-worm Betacom 30c Combi Gas Boiler VIEW	30kw	85.7%	2 years	£644	VIEW
Glow-worm Ultrapower 100 SXI 24kW Combi Gas Boiler VIEW	24kw	89.2%	2 years	£1,700	VIEW
Glow-worm Ultracom2 35 store 35kW Combi Gas Boiler VIEW	35kw	89.4%	2 years	£1,400	VIEW
Glow-worm Ultracom2 cxi 30kW Combi Gas Boiler VIEW	30kw	89.3%	2 years	£900,730	VIEW
Glow-worm Flexicom cx 24kW Combi Gas Boiler VIEW	24kw	88.4%	2 years	£830	VIEW
Glow-worm Betacom2 24kW Combi Gas Boiler VIEW	24kw	89%	2 years	£590	VIEW
Glow-worm Betacom3 24kW Combi Gas Boiler VIEW	24kw	89.2%	2 years	£560	VIEW
Glow-worm Betacom3 30kW Combi Gas Boiler VIEW	30kw	89.2%	2 years	£610	VIEW
Glow-worm Procombi Essential 24kW Combi Gas Boiler VIEW	24kw	89.2%	2 years	£660	VIEW
Glow-worm Procombi Essential 28kW Combi Gas Boiler VIEW	28kw	89.2%	2 years	£700	VIEW
Glow-worm Procombi Essential 35kW Combi Gas Boiler VIEW	35kw	89.7%	2 years	£841	VIEW
Glow-worm Ultimate2 Combi 30kW Gas Boiler VIEW	30kw	89.2%	2 years	£720	VIEW
Glow-worm Ultimate2 Combi 35kW Gas Boiler VIEW	35kw	89.2%	2 years	£863	VIEW

Heatline

Boiler Model	kW	Efficiency	Warranty	Typical Price
Heatline Capriz2 24kW Combi Gas Boiler VIEW	24kw	89.3%	2 years	£N/A	VIEW
Heatline Capriz2 28kW Combi Gas Boiler VIEW	28kw	89.3%	2 years	£N/A	VIEW

Ideal

Boiler Model	kW	Efficiency	Warranty	Typical Price
Best Sellers
Ideal Vogue Max C26 Combi Gas Boiler VIEW	18 kw	93%	10 years	£1,089	VIEW
Ideal Vogue Max C32 Combi Gas Boiler VIEW	26 kw	93%	10 years	£1,206	VIEW
Ideal Vogue Max C40 Combi Gas Boiler VIEW	32 kw	93%	10 years	£1,323	VIEW
Available
Ideal Vogue GEN2 C26 Combi Gas Boiler VIEW	18kw	93%	8 years	£1,165	VIEW
Ideal Vogue GEN2 C32 Combi Gas Boiler VIEW	26kw	93%	8 years	£1,334	VIEW
Ideal Vogue GEN2 C40 Combi Gas Boiler VIEW	32kw	93%	8 years	£1,354	VIEW
Ideal Logic Max C24 Combi Gas Boiler VIEW	24.2 kw	94%	10 years	£968	VIEW
Ideal Logic Max C30 Combi Gas Boiler VIEW	24.2 kw	94%	10 years	£1,026	VIEW
Ideal Logic Max C35 Combi Gas Boiler VIEW	24.2 kw	94%	10 years	£1,156	VIEW
Ideal Logic Plus C24 Combi Gas Boiler VIEW	24.2 kw	94%	7 years	£847	VIEW
Ideal Logic Plus C30 Combi Gas Boiler VIEW	24.2 kw	94%	7 years	£1,019	VIEW
Ideal Logic Plus C35 Combi Gas Boiler VIEW	24.2 kw	94%	7 years	£1,039	VIEW
Ideal Logic Combi C24 Gas Boiler VIEW	24.2 kw	94%	2 years	£750	VIEW
Ideal Logic Combi C30 Gas Boiler VIEW	24.2 kw	94%	2 years	£845	VIEW
Ideal Logic Combi C35 Gas Boiler VIEW	24.2 kw	94%	2 years	£950	VIEW
Discontinued
Ideal Vogue 40kW Combi Gas Boiler VIEW	26kw	89.10%	7 years	£1,210	VIEW
Ideal Logic Code Combi ES 26kW Gas Boiler VIEW	26kw	89.00%	2 years	£1,110	VIEW
Ideal Logic Combi ESP1 24kW Gas Boiler VIEW	24kw	94%	2 years	£770	VIEW
Ideal Logic Combi ESP1 30kW Gas Boiler VIEW	30kw	94%	2 years	£714	VIEW
Ideal Logic Combi ESP1 35kW Gas Boiler VIEW	35kw	94%	2 years	£765	VIEW
Ideal Logic Code Combi ES 33kW Gas Boiler VIEW	33kw	91%	10 years	£1,480	VIEW
Ideal Logic Code Combi ES 38kW Gas Boiler VIEW	38kw	91%	10 years	£1,500	VIEW

Intergas

Boiler Model	kW	Efficiency	Warranty	Typical Price
Intergas Combi Compact HRE 28/24 Gas Boiler VIEW	23kw	88.8%	7 years	£885	VIEW
Intergas Combi Compact HRE 36/30kW Gas Boiler VIEW	27kw	89.1%	7 years	£995	VIEW
Intergas Combi Compact HRE 36/40 Gas Boiler VIEW	41kw	88.8%	7 years	£1,020	VIEW
Intergas Rapid 25kW Combi Gas Boiler VIEW	25kw	89%	3 years	£625	VIEW
Intergas Rapid 32kW Combi Gas Boiler VIEW	32kw	88.9%	3 years	£665	VIEW
Intergas Combi Compact ECO RF 24kW Gas Boiler VIEW	24kw	88.8%	10 years	£1,100	VIEW
Intergas Combi Compact ECO RF 30 Gas Boiler VIEW	23kw	88.8%	10 years	£1,155	VIEW
Intergas Combi Compact ECO RF 36kW Gas Boiler VIEW	27kw	89.1%	10 years	£990	VIEW
Intergas Combi Compact HRE 24/18 Gas Boiler VIEW	17kw	88.8%	7 years	£775	VIEW
Intergas Rapid 25kW Plus Combi Gas Boiler VIEW	25kw	93%	6 years	£590	VIEW
Intergas Rapid 32kW Plus Combi Gas Boiler VIEW	32kw	93%	6 years	£645	VIEW
Intergas Xtreme 24kW Combi Gas Boiler VIEW	24kw	93%	7 years	£N/A	VIEW
Intergas Xtreme 30kW Combi Gas Boiler VIEW	30kw	93%	7 years	£N/A	VIEW
Intergas Xtreme 36kW Combi Gas Boiler VIEW	36kw	93%	7 years	£N/A	VIEW
Intergas Xclusive 24kW Combi Gas Boiler VIEW	24kw	87%	10 years	£N/A	VIEW
Intergas Xclusive 30kW Combi Gas Boiler VIEW	30kw	89%	10 years	£N/A	VIEW
Intergas Xclusive 36kW Combi Gas Boiler VIEW	36kw	89%	10 years	£N/A	VIEW

Johnson and Starley

Boiler Model	kW	Efficiency	Warranty	Typical Price
Johnson and Starley QuanTec HR 28c Combi 28kW Gas Boiler VIEW	28kw	89.3%	8 years	£N/A	VIEW
Johnson and Starley QuanTec 24c Combi 24kW Gas Boiler VIEW	16 kw	93%	8 years	£N/A	VIEW
Johnson and Starley QuanTec 30c Combi 28kW Gas Boiler VIEW	23kw	93%	8 years	£N/A	VIEW

Keston

Boiler Model	kW	Efficiency	Warranty	Typical Price
Keston C30 30kW Combi Gas Boiler VIEW	30kw	89.6%	7 years	£1,140	VIEW
Keston C35 35kW Combi Gas Boiler VIEW	35kw	89.6%	7 years	£1,180	VIEW

Main

Boiler Model	kW	Efficiency	Warranty	Typical Price
Main Combi Eco Elite 25kW Gas Boiler VIEW	25kw	89%	5 years	£590	VIEW
Main Combi Eco Elite 30kW Gas Boiler VIEW	30kw	88.7%	5 years	£670	VIEW
Main Eco Compact 25kW Combi Gas Boiler VIEW	25kw	93%	5 years	£620	VIEW
Main Eco Compact 30kW Combi Gas Boiler VIEW	30kw	93%	5 years	£710	VIEW

Navien

Boiler Model	kW	Efficiency	Warranty	Typical Price
Navien NCB 24kW Combi Gas Boiler VIEW	24kw	92%	7 years	£N/A	VIEW
Navien NCB 28kW Combi Gas Boiler VIEW	28kw	93%	7 years	£N/A	VIEW
Navien NCB 34kW Combi Gas Boiler VIEW	34kw	93%	7 years	£N/A	VIEW
Navien NCB 40kW Combi Gas Boiler VIEW	40kw	93%	7 years	£N/A	VIEW

Potterton

Boiler Model	kW	Efficiency	Warranty	Typical Price
Available
Potterton Titanium 24kW Combi Gas Boiler VIEW	24kw	91.1%	7 years	£850	VIEW
Potterton Gold Combi 24kW Gas Boiler VIEW	24kw	91.1%	2 years	£625	VIEW
Potterton Promax 24kW Combi Gas Boiler VIEW	24kw	89%	2 years	£1,065	VIEW
Potterton Promax 28kW Combi Gas Boiler VIEW	28kw	89%	2 years	£910	VIEW
Potterton Promax 33kW Combi Gas Boiler VIEW	33kw	89%	2 years	£1,100	VIEW
Potterton Promax Ultra 24kW Combi Gas Boiler VIEW	24kw	89.1%	2 years	£1,100	VIEW
Potterton Promax Ultra 28kW Combi Gas Boiler VIEW	28kw	89.1%	2 years	£950	VIEW
Potterton Promax Ultra 33kW Combi Gas Boiler VIEW	33kw	89.1%	2 years	£1,490	VIEW
Potterton Promax Ultra 40kW Combi Gas Boiler VIEW	40kw	89.1%	2 years	£1,420	VIEW
Potterton Titanium 28kW Combi Gas Boiler VIEW	28kw	91.1%	7 years	£835	VIEW
Potterton Titanium 33kW Combi Gas Boiler VIEW	33kw	91.1%	7 years	£925	VIEW
Potterton Titanium 40kW Combi Gas Boiler VIEW	40kw	91.1%	7 years	£935	VIEW
Potterton Gold Combi 28kW Gas Boiler VIEW	28kw	89%	2 years	£705	VIEW
Potterton Gold Combi 33kW Gas Boiler VIEW	33kw	89%	2 years	£825	VIEW
Potterton Assure 25kW Combi Gas Boiler VIEW	25kw	93%	2 years	£620	VIEW
Potterton Assure 30kW Combi Gas Boiler VIEW	30kw	93%	2 years	£732	VIEW
Potterton Assure 36kW Combi Gas Boiler VIEW	36kw	93%	2 years	£1	VIEW
Discontinued
Potterton Heatmax Combi HE 24kW Gas Boiler VIEW	24kw	91.10%	2 years	£580	VIEW
Potterton Performa Combi HE 30kW Combi Gas Boiler VIEW	30kw	86.40%	1 year	£810	VIEW
Potterton Heatmax Combi HE 28kW Gas Boiler VIEW	28kw	91.1%	2 years	£694	VIEW
Potterton Heatmax Combi HE 33kW Gas Boiler VIEW	33kw	91.1%	2 years	£806	VIEW
Potterton Performa Combi HE 24kW Combi Gas Boiler VIEW	30kw	86%	1 year	£590	VIEW

Ravenheat

Boiler Model	kW	Efficiency	Warranty	Typical Price
Available
Ravenheat CSI 120 32kW Combi Gas Boiler VIEW	32kw	90.6%	3 years	£1,905	VIEW
Ravenheat WH80 25kW Combi Gas Boiler VIEW	25kw	90.3%	5 years	£525	VIEW
Ravenheat WH90 30kW Combi Gas Boiler VIEW	25kw	90.3%	5 years	£525	VIEW
Ravenheat CSI Primary AAA 25kW Combi Gas Boiler VIEW	25kw	90.1%	3 years	£645	VIEW
Ravenheat CSI 120 25kW Combi Gas Boiler VIEW	25kw	92%	3 years	£550	VIEW
Ravenheat HE 42 42kW Combi Gas Boiler VIEW	42kw	90.6%	3 years	£1,444	VIEW
Ravenheat HE80 25kW Combi Gas Boiler VIEW	25kw	90.3%	5 years	£957	VIEW
Ravenheat HE98 30kW Combi Gas Boiler VIEW	30kw	90.3%	5 years	£800	VIEW
Ravenheat CS80 25kW Combi Gas Boiler VIEW	25kw	90.3%	2 years	£545	VIEW
Ravenheat CS90 30kW Combi Gas Boiler VIEW	30kw	90.3%	2 years	£593	VIEW
Ravenheat HE98S 30kW Combi Gas Boiler VIEW	31kw	88.9%	5 year	£750	VIEW
Ravenheat HE30S 31kW Combi Gas Boiler VIEW	26.4kw	92%	7 years	£N/A	VIEW
Discontinued
Ravenheat CSI 150 28kW Combi Gas Boiler VIEW	28kw	88.90%	3 years	£985	VIEW
Ravenheat CSI 85 Combi Gas Boiler VIEW	22.3kw	86.9%	3 years	£590	VIEW
Ravenheat WH100 Combi Gas Boiler VIEW	26kw	90.3%	5 years	£599	VIEW
Ravenheat WH130 29kW Combi Gas Boiler VIEW	29kw	90.3%	5 years	£643	VIEW
Ravenheat CSI 150 Combi Gas Boiler VIEW	28kw	90.6%	3 years	£603	VIEW
Ravenheat Combi Plus 32kW Gas Boiler VIEW	32kw	90.7%	3 years	£1,905	VIEW
Ravenheat Combi Plus 42kW Gas Boiler VIEW	42kw	90.37	3 years	£1,519	VIEW
Ravenheat Combi Store 32kW Gas Boiler VIEW	32kw	90.7%	3 years	£1,314	VIEW
Ravenheat Combi Store 42kW Gas Boiler VIEW	42kw	90.7%	3 years	£1,558	VIEW

Vaillant

Boiler Model	kW	Efficiency	Warranty	Typical Price
Best Sellers
Vaillant ecoTEC plus 825 Combi Gas Boiler VIEW	20.4 kw	94%	5 years	£1,152	VIEW
Vaillant ecoTEC plus 832 Combi Gas Boiler VIEW	25.7 kw	94%	5 years	£1,248	VIEW
Vaillant ecoTEC plus 835 Combi Gas Boiler VIEW	32.2 kw	94%	5 years	£1,431	VIEW
Vaillant ecoTEC plus 838 Combi Gas Boiler VIEW	30.1 kw	94%	5 years	£1,408	VIEW
Available
Vaillant ecoTEC Pro 28 kW Combi Gas Boiler VIEW	25.9 kw	94%	2 years	£1,119	VIEW
Vaillant ecoTEC Exclusive Green IQ 835 Combi Gas Boiler VIEW	26.4 kw	94%	5 years	£1,425	VIEW
Vaillant ecoTEC Pro 30kW combi Gas boiler VIEW	25.7 kw	93%	2 years	£1,211	VIEW
Vaillant ecoTEC Exclusive Green IQ 843 Combi Gas Boiler VIEW	36 kw	94%	5 years	£1,673	VIEW
Vaillant ecoFIT pure 825 Combi Gas Boiler VIEW	19.1kw	94%	2 years	£907	VIEW
Vaillant ecoFIT pure 830 Combi Gas Boiler VIEW	26.5 kw	94%	2 years	£1,058	VIEW
Vaillant ecoFIT pure 835 Combi Gas Boiler VIEW	26.7 kw	94%	2 years	£1,192	VIEW
Vaillant ecoTEC plus 938 Combi Gas Boiler VIEW	30.9 kw	94%	5 years	£1,703	VIEW
Vaillant ecoTEC Pro 24kW combi Gas boiler VIEW	24.8 kw	94%	2 years	£1,015	VIEW
Discontinued
Vaillant ecoTEC exclusive 832 Combi Gas Boiler VIEW	32kw	89.3%	2 years	£1,200	VIEW
Vaillant ecoTec plus 937 Combi Gas Boiler VIEW	37kw	89.3.%	5 years	£1,500	VIEW
Vaillant EcoTEC Exclusive 32kW Combi Gas Boiler VIEW	32kw	89.8%	5 years	£1,395	VIEW
Vaillant EcoFIt sustain 825 Combi Gas Boiler VIEW	25kw	89.3%	5 years	£1,250	VIEW
Vaillant EcoFIt sustain 830 Combi Gas Boiler VIEW	30kw	89.3%	5 years	£1,500	VIEW
Vaillant EcoFIt sustain 835 Combi Gas Boiler VIEW	35kw	89.3%	5 years	£1,300	VIEW
Vaillant Home 25kW Combi Gas Boiler VIEW	25kw	89.3%	2 years	£1,525	VIEW
Vaillant Home 30kW Combi Gas Boiler VIEW	30kw	89.3%	2 years	£1,025	VIEW
Vaillant Home 35kW Combi Gas Boiler VIEW	35kw	89.3%	2 years	£1,300	VIEW

Viessmann

Boiler Model	kW	Efficiency	Warranty	Typical Price
Best Sellers
Viessmann B2KB Vitodens 200-W 26kW Combi Gas Boiler VIEW	26kw	89%	3 - 5 years	£1,445	VIEW
Viessmann B2KB Vitodens 200-W 30kW Combi Gas Boiler VIEW	30kw	89%	3 - 5 years	£1,565	VIEW
Viessmann B2KB Vitodens 200-W 35kW Combi Gas Boiler VIEW	35kw	89.1%	3 - 5 years	£1,425	VIEW
Available
Viessmann B1KC Vitodens 100-W 30kW Combi Gas Boiler VIEW	30kw	88.9%	5 years	£1,095	VIEW
Viessmann BPJD Vitodens 050-W 29kW Combi Gas Boiler VIEW	29kw	89%	3 years	£865	VIEW
Viessmann B1LD Vitodens 111-W 26kW Combi Gas Boiler VIEW	26kw	89.5%	5 years	£1,550	VIEW
Viessmann B2TB Vitodens 222-F 19kW Storage Combi Gas Boiler VIEW	19kw	89.3%	3 - 5 years	£2,560	VIEW
Viessmann B2UB Vitodens 242-F 19kW Storage Combi Gas Boiler VIEW	19kw	89.3%	2 years	£2,700	VIEW
Viessmann BPJD Vitodens 050-W 35kW Combi Gas Boiler VIEW	35kw	89%	3 years	£910	VIEW
Viessmann B1KC Vitodens 100-W 26kW Combi Gas Boiler VIEW	26kw	89.1%	5 years	£1,125	VIEW
Viessmann B1KC Vitodens 100-W 35kW Combi Gas Boiler VIEW	35kw	89.3%	5 years	£1,175	VIEW
Viessmann B1LD Vitodens 111-W 35kW Combi Gas Boiler VIEW	35kw	89.5%	5 years	£1,590	VIEW
Viessmann B2TB Vitodens 222-F 26kW Storage Combi Gas Boiler VIEW	26kw	89.4%	3 - 5 years	£2,700	VIEW
Viessmann B2TB Vitodens 222-F 35kW Storage Combi Gas Boiler VIEW	35kw	89.5%	3 - 5 years	£2,975	VIEW
Viessmann B2UB Vitodens 242-F 26kW Storage Combi Gas Boiler VIEW	26kw	89.3%	2 years	£2,975	VIEW
Discontinued
Viessmann B1KC Vitodens 100-W 19kW Combi Gas Boiler VIEW	19kw	89.2%	5 years	£950	VIEW

Vokera

Boiler Model	kW	Efficiency	Warranty	Typical Price
Vokera Unica i28kW Combi Gas Boiler VIEW	28kw	89.6%	2 years	£750	VIEW
Vokera Linea One 38kW Combi Gas Boiler VIEW	38kw	93%	5 year	£1,105	VIEW
Vokera Vision 25c Combi Gas Boiler VIEW	25kw	89.1%	5-7 years	£630	VIEW
Vokera Unica i32kW Combi Gas Boiler VIEW	32kw	89.6%	5 years	£825	VIEW
Vokera Unica i36kW Combi Gas Boiler VIEW	36kw	89.2%	5 year	£920	VIEW
Vokera Vision 30c Combi Gas Boiler VIEW	30kw	89%	5-7 years	£691	VIEW
Vokera Compact 25A Combi Gas Boiler VIEW	25kw	89.1%	2 years	£545	VIEW
Vokera Compact 29A Combi Gas Boiler VIEW	29kw	89%	2 years	£615	VIEW
Vokera Evolve C 24kW Combi Gas Boiler VIEW	24kw	94%	7 years	£838	VIEW
Vokera Evolve C 28kW Combi Gas Boiler VIEW	28kw	94%	7 years	£874	VIEW
Vokera Evolve C 32kW Combi Gas Boiler VIEW	32kw	94%	7 years	£940	VIEW
Vokera Evolve C 35kW Combi Gas Boiler VIEW	35kw	94%	7 years	£980	VIEW
Vokera Evolve C 42kW Combi Gas Boiler VIEW	42kw	94%	7 years	£1,020	VIEW
Vokera Easi-Heat Plus 25Ci Combi Gas Boiler VIEW	25kw	93%	5 years	£450	VIEW
Vokera Easi-Heat Plus 29Ci Combi Gas Boiler VIEW	29kw	93%	5 years	£475	VIEW
Vokera Easi-Heat Plus 32Ci Combi Gas Boiler VIEW	32kw	93%	5 years	£620	VIEW

Warmhaus

Boiler Model	kW	Efficiency	Warranty	Typical Price
Warmhaus Enerwa 31kW Combi Gas Boiler VIEW	31kw	91%	2 years	£N/A	VIEW
Warmhaus Enerwa 35kW Combi Gas Boiler VIEW	35kw	91%	2 years	£N/A	VIEW
Warmhaus Enerwa 40kW Combi Gas Boiler VIEW	40kw	91%	2 years	£N/A	VIEW
Warmhaus Enerwa Plus 31kW Combi Gas Boiler VIEW	23.7 kw	92%	2 years	£N/A	VIEW
Warmhaus Enerwa Plus 35kW Combi Gas Boiler VIEW	28 kw	92%	2 years	£N/A	VIEW
Warmhaus Enerwa Plus 40kW Combi Gas Boiler VIEW	33 kw	92%	2 years	£N/A	VIEW
Warmhaus Priwa 31kW Combi Gas Boiler VIEW	31kw	90%	2 years	£N/A	VIEW
Warmhaus Priwa 35kW Combi Gas Boiler VIEW	35kw	90%	2 years	£N/A	VIEW
Warmhaus Priwa 40kW Combi Gas Boiler VIEW	40kw	90%	2 years	£N/A	VIEW
Warmhaus Priwa Plus 31kW Combi Gas Boiler VIEW	31kw	90%	2 years	£N/A	VIEW
Warmhaus Priwa Plus 35kW Combi Gas Boiler VIEW	35kw	90%	2 years	£N/A	VIEW
Warmhaus Priwa Plus 40kW Combi Gas Boiler VIEW	40kw	90%	2 years	£N/A	VIEW

Worcester Bosch

Boiler Model	kW	Efficiency	Warranty	Typical Price
Best Sellers
Worcester Bosch Greenstar 25i Combi Gas Boiler VIEW	25kw	94%	5 years	£975	VIEW
Worcester Bosch Greenstar 30i Combi Gas Boiler VIEW	30kw	94%	5 years	£1,075	VIEW
Available
Worcester Bosch Greenstar 28CDi Compact Combi Gas Boiler VIEW	28kw	94%	5 years	£1,002	VIEW
Worcester Bosch Greenstar 32CDi Compact Combi Gas Boiler VIEW	32kw	94%	5 years	£1,111	VIEW
Worcester Bosch Greenstar Highflow 550CDi Combi Gas Boiler VIEW	30.6kw	92%	5 years	£2,475	VIEW
Worcester Bosch Greenstar Highflow 440CDi Combi Gas Boiler VIEW	29.2kw	92%	2 years	£2,130	VIEW
Worcester Bosch Greenstar 30Si Compact Combi Gas Boiler VIEW	30kw	94%	5 years	£1,161	VIEW
Worcester Bosch Greenstar 25Si Compact Combi Gas Boiler VIEW	25kw	94%	5 years	£1,075	VIEW
Worcester Bosch Greenstar 36CDi Compact Combi Gas Boiler VIEW	36kw	94%	5 years	£1,370	VIEW
Worcester Bosch Greenstar 8000 Style 30kW Combi Gas Boiler VIEW	30kw	94%	5 years	£1,300	VIEW
Worcester Bosch Greenstar 8000 Style 40kW Combi Gas Boiler VIEW	40kw	94%	5 years	£1,625	VIEW
Worcester Bosch Greenstar 8000 Style 45kW Combi Gas Boiler VIEW	45kw	94%	5 years	£1,908	VIEW
Worcester Bosch Greenstar 8000 Style 50kW Combi Gas Boiler VIEW	50kw	94%	5 years	£2,297	VIEW
Worcester Bosch Greenstar 8000 Style 35kW Combi Gas Boiler VIEW	35kw	94%	5 years	£1,500	VIEW
Worcester Bosch Greenstar 8000 Life 30kW Combi Gas Boiler VIEW	30kw	94%	5 years	£1,200	VIEW
Worcester Bosch Greenstar 8000 Life 35kW Combi Gas Boiler VIEW	35kw	94%	5 years	£1,315	VIEW
Worcester Bosch Greenstar 8000 Life 40kW Combi Gas Boiler VIEW	40kw	94%	5 years	£1,495	VIEW
Worcester Bosch Greenstar 8000 Life 45kW Combi Gas Boiler VIEW	45kw	94%	5 years	£1,800	VIEW
Worcester Bosch Greenstar 8000 Life 50kW Combi Gas Boiler VIEW	50kw	94%	5 years	£2,100	VIEW
Worcester Bosch 2000 25kW Combi Gas Boiler VIEW	25kw	93%	5 years	£777	VIEW
Worcester Bosch 2000 30kW Combi Gas Boiler VIEW	30kw	93%	5 years	£890	VIEW
Discontinued
Worcester Bosch Greenstar 27CDi Combi Gas Boiler VIEW	27kw	90.3	5 years	£1,700	VIEW
Worcester Bosch Greenstar 37CDi Combi Gas Boiler VIEW	32kw	90.1	5 years	£1,282	VIEW
Worcester Bosch Greenstar 30CDi Combi Gas Boiler VIEW	30kw	90.1	5 years	£1,127	VIEW
Worcester Bosch Greenstar 42CDi Combi Gas Boiler VIEW	42kw	90.1	5 years	£1,769	VIEW
Worcester Bosch Greenstar 24i Junior Combi Gas Boiler VIEW	24kw	89.10%	7 years	£800	VIEW
Worcester Bosch Greenstar 42CDi Classic Combi Gas Boiler VIEW	42kw	92%	2 years	£1,600	VIEW
Worcester Bosch Greenstar 34CDi Classic Combi Gas Boiler VIEW	34kw	92%	2 years	£1,169	VIEW
Worcester Bosch Greenstar 38CDi Classic Combi Gas Boiler VIEW	38kw	92%	2 years	£1,331	VIEW
Worcester Bosch Greenstar 29CDi Classic Combi Gas Boiler VIEW	29kw	89.10%	2 years	£1,116	VIEW
Worcester Bosch Greenstar 28i Junior Combi Gas Boiler VIEW	28kw	89.10%	2 years	£900	VIEW

Zanussi

Boiler Model	kW	Efficiency	Warranty	Typical Price
Zanussi Ultra Combi 30kW Gas Boiler VIEW	24.2 kw	93%	2 years	£N/A	VIEW
Zanussi Ultra Combi 35kW Gas Boiler VIEW	24.2 kw	91%	2 years	£N/A	VIEW

What work do you require?

Compare Gas Combi Boilers

You can select up to 4 gas boilers. Simply add your choices to compare.

Alpha

Available

Discontinued

Ariston

Available

Discontinued

ATAG

Baxi

Best Sellers

Available

Discontinued

Biasi

Daikin

Ferroli

Available

Discontinued

Glow-worm

Available

Discontinued

Heatline

Ideal

Best Sellers

Available

Discontinued

Intergas

Johnson and Starley

Keston

Main

Navien

Potterton

Available

Discontinued

Ravenheat

Available

Discontinued

Vaillant

Best Sellers

Available

Discontinued

Viessmann

Best Sellers

Available

Discontinued

Vokera

Warmhaus

Worcester Bosch

Best Sellers

Available

Discontinued

Zanussi

Compare boilers

Try our boiler comparison tool

Need a new boiler?

Get FREE boiler quotes now!

Boiler Cost Calculator

Takes less than a minute

Need a boiler repair?

Get a FREE boiler repair quote!

Need a new boiler?

Get FREE no-obligation quotes now!

What work do you require?

Find approved boiler engineers in your area.

Begin your search by entering your postcode below.

Or select your region from the list and start your search

Who are Boiler Guide

Useful links

For tradespeople

Manufacturers

Find approved boiler engineers
in your area.