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Compare System Boilers
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Fuel type
Boiler type
Manufacturer
- Alpha (12)
- Ariston (6)
- Baxi (11)
- Biasi (7)
- Ferroli (7)
- Firebird (12)
- Glow-worm (7)
- Grant (16)
- Ideal (16)
- Intergas (4)
- Johnson and Starley (1)
- Keston (1)
- Main (2)
- Mistral (18)
- Potterton (10)
- Ravenheat (2)
- Vaillant (20)
- Viessmann (8)
- Vokera (7)
- Warmflow (6)
- Worcester Bosch (23)
- Zanussi (4)
Alpha
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Alpha CD28S System Gas Boiler | 28kw | 88.80% | 3 years | £840 | |
| Alpha CD20S System Gas Boiler | 20kw | 88.80% | 3 years | £770 | |
| Alpha CD12S System Gas Boiler | 12kw | 88.60% | 3 years | £760 | |
| Alpha InTec2 20SE System Gas Boiler | 20kw | 88.9% | 5 years | £827 | |
| Alpha InTec2 30SE System Gas Boiler | 30kw | 89% | 5 years | £827 | |
| Alpha InTec 12S System Gas Boiler | 13kw | 88.80% | 3 years | £800 | |
| Alpha InTec 18S System Gas Boiler | 20kw | 88.80% | 3 years | £900 | |
| Alpha InTec 28S System Gas Boiler | 30kw | 89.00% | 3 years | £900 | |
Ariston
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Ariston GENUS HE 24 System Gas Boiler | 24kw | 90.3 | 1 year | £571 | |
| Ariston E-SYSTEM evo 24 System Gas Boiler | 24kw | 90% | 2 years | £495 | |
| Ariston E-SYSTEM evo 30 System Gas Boiler | 30kw | 90.2% | 2 years | £805 | |
| Ariston CLAS HE SYSTEM evo 18 System Gas Boiler | 18kw | 90.2% | 5 years | £834 | |
| Ariston CLAS HE SYSTEM evo 24 System Gas Boiler | 24kw | 90.1% | 5 years | £891 | |
| Ariston CLAS HE SYSTEM evo 30 System Gas Boiler | 30kw | 90.2% | 5 years | £969 | |
Baxi
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Baxi EcoBlue System 12 Gas Boiler | 12kw | 89.1% | 7 years | £841 | |
| Baxi EcoBlue System 15 Gas Boiler | 15kw | 89.1% | 7 years | £846 | |
| Baxi EcoBlue System 18 Gas Boiler | 18kw | 89.1% | 7 years | £918 | |
| Baxi EcoBlue System 24 Gas Boiler | 24kw | 89.1% | 7 years | £1007 | |
| Baxi EcoBlue System 28 Gas Boiler | 28kw | 89.1% | 7 years | £1189 | |
| Baxi EcoBlue System 32 Gas Boiler | 32kw | 89.1% | 7 years | £1084 | |
| Baxi Megaflo System 15 Gas Boiler | 15kw | 88.6% | 7 years | £760 | |
| Baxi Megaflo System 18 Gas Boiler | 18kw | 88.6% | 7 years | £812 | |
| Baxi Megaflo System 24 Gas Boiler | 24kw | 88.6% | 7 years | £859 | |
| Baxi Megaflo System 28 Gas Boiler | 28kw | 88.5% | 7 years | £929 | |
| Baxi Megaflo System 32 Gas Boiler | 32kw | 88.5% | 7 years | £924 | |
Biasi
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Biasi Inovia System ERP 25kW Gas Boiler | 25kw | 92% | 5 years | £677 | |
| Biasi Advance Plus ERP 16kW System Gas Boiler | 16kw | 91% | 5 years | £561 | |
| Biasi Advance Plus ERP 25kW System Gas Boiler | 25kw | 92% | 5 years | £593 | |
| Biasi Advance Plus ERP 30kW System Gas Boiler | 30kw | 92% | 5 years | £615 | |
| Biasi Riva Plus ERP 28kW System Gas Boiler | 28kw | 89% | 2 years | £574 | |
| Biasi Riva Plus ERP 24kW System Gas Boiler | 24kw | 89% | 2 years | £574 | |
Ferroli
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Ferroli Optimax HE PLUS 18 s System Gas Boiler | 18kw | 92.5% | 5 years | £539 | |
| Ferroli Optimax HE PLUS 25s System Gas Boiler | 25kw | 90.5% | 5 years | £539 | |
| Ferroli Optimax HE 31 S System Gas Boiler | 30kw | 90.6% | 5 years | £589 | |
| Ferroli Modena 18s HE System Gas Boiler | 18kw | 90.20% | 5 year warranty (7 year and 10 year option) | £556 | |
| Ferroli Modena 25s HE System Gas Boiler | 25kw | 90.40% | 5 year warranty (7 year and 10 year option) | £568 | |
| Ferroli Modena 32s HE System Gas Boiler | 32kw | 90.40% | 5 year warranty (7 year and 10 year option) | £647 | |
Firebird
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Firebird Envirolite Utility Internal 35kW Regular Oil Boiler | 35kw | 92% | 5 years | £2052 | |
| Firebird Envirolite System Internal 35kW Oil Boiler | 35kw | 93% | 5 years | £2248 | |
| Firebird Enviroblue Kitchen System Internal 20kW Oil Boiler | 20kw | 93% | 5 years | £1275 | |
| Firebird Enviroblue Kitchen System Internal 26kW Oil Boiler | 26kw | 93% | 5 years | £1283 | |
| Firebird Enviroblue Kitchen System Internal 35kW Oil Boiler | 35kw | 93% | 5 years | £2369 | |
Glow-worm
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Glow-worm Ultimate2 25kW System Gas Boiler | 25kw | 89.3% | 5 years | £865 | |
| Glow-worm Easicom 25s System Gas Boiler | 25kw | 89.3% | 3 years | £860 | |
| Glow-worm Energy System 12kW Gas Boiler | 12kw | 89.4% | 5 years | £667 | |
| Glow-worm Energy System 15kW Gas Boiler | 15kw | 89.4% | 7 years | £706 | |
| Glow-worm Energy System 18kW Gas Boiler | 18kw | 89.4% | 7 years | £759 | |
| Glow-worm Energy System 25kW Gas Boiler | 25kw | 89.4% | 7 years | £796 | |
| Glow-worm Energy System 30kW Gas Boiler | 30kw | 89.3% | 7 years | £822 | |
Grant
Ideal
Intergas
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Intergas Compact HRE SB 18Kw System Gas Boiler | 18kw | 93% | 7 years | £900 | |
| Intergas Compact HRE SB 24Kw System Gas Boiler | 24kw | 93% | 7 years | £1026 | |
| Intergas Compact HRE SB 30Kw System Gas Boiler | 30kw | 93% | 7 years | £1121 | |
| Intergas Compact HRE SB 40Kw System Gas Boiler | 40kw | 92% | 10 years | £1185 | |
Johnson and Starley
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Johnson and Starley QuanTec 24s System 24kW Oil Boiler | 24kw | 89.5% | 8 years | £816 | |
Keston
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Keston S30 30kW System Gas Boiler | 30kw | 89.6% | 2 years | £1075 | |
Main
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Main System Eco Elite 24kW Gas Boiler | 24kw | 89.10% | 5 years | £618 | |
| Main System Eco Elite 28kW Gas Boiler | 28kw | 88.80% | 5 years | £829 | |
Mistral
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Mistral Sealed System CS1 20kW Oil Boiler | 20kw | 92% | 2 yr. parts - 5 yr. heat exch | £2300 | |
| Mistral Sealed System CS2 26kW Oil Boiler | 26kw | 92% | 2 yr. parts - 5 yr. heat exch | £2370 | |
| Mistral Sealed System S1 20kW Oil Boiler | 20kw | 87% | 2 yr. parts - 5 yr. heat exch | £1320 | |
| Mistral Sealed System S2 26kW Oil Boiler | 26kw | 87% | 2 yr. parts - 5 yr. heat exch | £1380 | |
| Mistral Sealed System S3 35kW Oil Boiler | 35kw | 87% | 2 yr. parts - 5 yr. heat exch | £1500 | |
| Mistral Sealed System S4 41kW Oil Boiler | 41kw | 87% | 2 yr. parts - 5 yr. heat exch | £1680 | |
| Mistral Outdoor Sealed System OD SS1 20kW Oil Boiler | 20kw | 87% | 2 yr. parts - 5 yr. heat exch | £1500 | |
| Mistral Outdoor Sealed System OD SS2 26kW Oil Boiler | 26kw | 87% | 2 yr. parts - 5 yr. heat exch | £1590 | |
| Mistral Outdoor Sealed System OD SS4 41kW Oil Boiler | 41kw | 87% | 2 yr. parts - 5 yr. heat exch | £1920 | |
| Mistral Sealed System CS3 35kW Oil Boiler | 35kw | 92% | 2 yr. parts - 5 yr. heat exch | £2700 | |
| Mistral Sealed System CS4 41kW Oil Boiler | 41kw | 92% | 2 yr. parts - 5 yr. heat exch | £3200 | |
| Mistral Outdoor Sealed System COD SS1 20kW Oil Boiler | 20kw | 92% | 2 yr. parts - 5 yr. heat exch | £1605 | |
| Mistral Outdoor Sealed System COD SS2 26kW Oil Boiler | 26kw | 92% | 2 yr. parts - 5 yr. heat exch | £1680 | |
| Mistral Outdoor Sealed System COD SS3 35kW Oil Boiler | 35kw | 92% | 2 yr. parts - 5 yr. heat exch | £2040 | |
| Mistral Outdoor Sealed System COD SS4 41kW Oil Boiler | 41kw | 90% | 2 yr. parts - 5 yr. heat exch | £2160 | |
Potterton
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Potterton Promax System HE Plus A 12kW Gas Boiler | 12kw | 91.10% | 2 years | £735 | |
| Potterton Promax System 12kW Gas Boiler | 12kw | 89% | 2 years | £913 | |
| Potterton Promax System 15kW Gas Boiler | 15kw | 89% | 2 years | £980 | |
| Potterton Promax System 18kW Gas Boiler | 18kw | 89% | 2 years | £863 | |
| Potterton Promax System 24kW Gas Boiler | 24kw | 89% | 2 years | £791 | |
| Potterton Promax System 32kW Gas Boiler | 32kw | 89% | 2 years | £1246 | |
| Potterton Promax System HE Plus A 15kW Gas Boiler | 15kw | 91.1% | 2 years | £825 | |
| Potterton Promax System HE Plus A 18kW Gas Boiler | 18kw | 91.1% | 1 year | £1085 | |
| Potterton Promax System HE Plus A 32kW Gas Boiler | 32kw | 91.1% | 1 year | £1228 | |
| Potterton Promax System HE Plus A 24kW Gas Boiler | 24kw | 91.1% | 1 year | £779 | |
Ravenheat
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Ravenheat WH System 4-24 26kW Gas Boiler | 26kw | 90.3% | 5 years | £579 | |
| Ravenheat CS System 4-24 26kW Gas Boiler | 26kw | 90.3% | 2 years | £579 | |
Vaillant
Viessmann
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Viessmann B2HB Vitodens 200-W 30kW System Gas Boiler | 30kw | 97.91% | 3 - 5 years | £2774 | |
| Viessmann B1HC Vitodens 100-W 19kW System Gas Boiler | 19kw | 97.92% | 5 years | £2035 | |
| Viessmann B1HC Vitodens 100-W 26kW System Gas Boiler | 26kw | 97.95% | 5 years | £2105 | |
| Viessmann B1HC Vitodens 100-W 30kW System Gas Boiler | 30kw | 98.02% | 5 years | £2167 | |
| Viessmann B1HC Vitodens 100-W 35kW System Gas Boiler | 35kw | 97.91% | 5 years | £2272 | |
| Viessmann B2HB Vitodens 200-W 19kW System Gas Boiler | 19kw | 97.53% | 3 - 5 years | £2360 | |
| Viessmann B2HB Vitodens 200-W 26kW System Gas Boiler | 26kw | 97.95% | 5 years | £2570 | |
| Viessmann B2HB Vitodens 200-W 35kW System Gas Boiler | 35kw | 97.72% | 3 - 5 years | £2874 | |
Vokera
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Vokera Mynute i20 System Gas Boiler | 20kw | 97% | 5 years | £704 | |
| Vokera Mynute i30 System Gas Boiler | 30kw | 97% | 5 years | £748 | |
| Vokera Mynute 35HE System Gas Boiler | 35kw | 80.4% | 2 years | £782 | |
| Vokera Vision 20s System Gas Boiler | 20kw | 97% | 5-7 years | £699 | |
| Vokera Vision 25s System Gas Boiler | 25kw | 97% | 5-7 years | £708 | |
| Vokera Verve i50 System Gas Boiler | 47kw | 90% | 2 years | £2399 | |
Warmflow
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Warmflow Kabin Pak HE 21 Kw System Oil Boiler | 21kw | 90.7% | 2 years | £1417 | |
| Warmflow Kabin Pak HE 26kW System Oil boiler | 26kw | 90.8% | 2 years | £1790 | |
| Warmflow Kabin Pak HE 33kW System Oil boiler | 33kw | 90.7% | 2 years | £1788 | |
| Warmflow Utility HE 21kW System Oil Boilers | 21kw | 90.7% | 5 years | £1376 | |
| Warmflow Utility HE 26kW System Oil boiler | 26kw | 90.8% | 5 years | £1610 | |
| Warmflow Utility HE 33kW System Oil boilers | 33kw | 90.7% | 5 years | £1510 | |
Worcester Bosch
Zanussi
| Boiler Model | kW Options | Efficiency | Standard Warranty | Typical Price | Add to Compare |
|---|---|---|---|---|---|
| Zanussi Ultra System 15kW Gas Boiler | 12kw | 89.3% | 10 years | £0 | |
| Zanussi Ultra System 18kW Gas Boiler | 18kw | 92% | 10 years | £0 | |
| Zanussi Ultra System 24kW Gas Boiler | 24kw | 93% | 10 years | £0 | |
| Zanussi Ultra System 30kW Gas Boiler | 30kw | 89.6% | 10 years | £0 | |
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