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Guide to oil boiler prices, models, warranties and sizes

12/10/2019

 

Oil boilers prices vary according to size and quality, internal and external. Combi boilers range from £2,225 - £2,950; heat only boilers from £1,200 - £2,500 and system boilers from £1,450 - £2,600. We guide you on oil boiler prices, models, warranty periods and sizes in our comprehensive guide. Our pricing tables are ordered by size of property (this is a rough guide) and range from lowest to highest. We include oil boilers from Grant, Firebird, Warmflow and Worcester Bosch. For more on fitted oil boiler costs see our Guide to oil boiler installation costs. Also try our Guide to oil tank installation costs.

Which type of oil boiler do I need?

Oil boilers are available in combi, heat only and system models with internal and external models. The most suitable model will vary according to your circumstances. For more on which type of boiler is best try our Guide to Boiler Types.

Picking the right model

We collate combi, heating only and system boilers according to property size and internal and external models. Most oil boilers offer a kW range that can be adjusted by the engineer. Our sizes are a rough guide. We offer some extra guidance here: How to size your boiler

Oil boiler types

Combi boiler

Provide heating and hot water via a single unit (no hot water tank). Advantages are instant hot water and space saving. Disadvantages are no electric immersion back up for hot water and do not work well with poor water pressure.

Heat only boiler

Provides heating only and hot water in conjunction with a hot water tank. Advantages are more economical to replace and electric immersion back up for hot water. Disadvantage is higher maintenance requirements for hot water system not covered by boiler manufacturer’s warranty

System boiler

Provides heating only and hot water in conjunction with a hot water tank. Main advantage is that more system components are integral to the boiler and therefore cover by the manufacturer’s warranty. Disadvantage is that unlike a combi there is a maintenance cost to a separate hot water system

Guide to oil boiler sizes

Oil boilers will almost always be variable in output. A 15/21 boiler means it can be adjusted to output from 15kW to 21kW. The vast majority of oil boilers serve older, rural properties and we have grouped together boiler sizes accordingly. If you have a modern, well insulated home you can likely go to the table above your property size. For example, a modern three bed house may only require a 15/21 kW output boiler (listed under 2 bed houses) rather than a 21/26 kW output listed under 3 bed houses.

Sizing hot water flow rates for combi boilers

The hot water flow rate for a combi is not adjustable, but it does vary from boiler to boiler. For example, under 2 bed internal oil boilers, flow rates vary between 12 litres per minutes and 18 litres per minute. Flow rate is important particularly if you have multiple bathrooms when you may wish to opt for one of the higher flow rate models.

 

Jo & Caroline - Heating Heroes

Thinking about renewables options

We impartially review the feasibility of all renewable systems and specify the right system for you.

 

Internal oil boilers

Combi boilers

2 BEDROOM INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Firebird Envirogreen Internal Combi HEC20 Combi ECE020DLX £2,025.00 2 5-10 12/20 16 93.00%
Firebird Envirogreen Internal Slimline Combi C20 Combi ECE020SLM £2,050.00 2 5-10 12/20 12 93.00%
Grant VortexPro Internal Combi 21 Combi VTXCOMBI21 £2,175.00 2 5 15/21 15 90.81%
Warmflow Utility HEE Combi 15-21 Combi UC70HEE £2,275.00 2 5-7 15/21 18 90.70%
Worcester Bosch Heatslave II 12/18 Combi   £2,350.00 5 10 12/18 15 90.00%
Worcester Bosch Heatslave II 18/25 Combi   £2,450.00 5 10 18/25 18 90.00%
Grant VortexBlue Internal Combi 21 Combi VTXBFCOMBI21 £2,500.00 2 10 15/21 15 90.81%

 

3 BEDROOM INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Firebird Envirogreen Internal Combi HEC26 Combi ECE026DLX £2,075.00 2 5-10 20/26 16 93.00%
Firebird Envirogreen Internal Slimline Combi C26 Combi ECE026SLM £2,100.00 2 5-10 20/26 16 93.00%
Grant VortexPro Internal Combi 26 Combi VTXCOMBI26 £2,200.00 2 5 21/26 17 91.71%
Grant VortexPro Internal Combi XS 26 Combi VTXXSCOMBI26 £2,200.00 2 5 21/26 17 92.00%
Worcester Bosch Heatslave II 18/25 Combi   £2,450.00 5 10 18/25 18 90.00%
Warmflow Utility HEE Combi 21-26 Combi UC90HEE £2,450.00 2 5-7 21/26 24 90.80%
Grant VortexBlue Internal Combi 26 Combi VTXBFCOMBI26 £2,600.00 2 10 21/26 17 91.71%
Worcester Bosch Heatslave II 25/32 Combi   £2,650.00 5 10 25/32 22 91.00%

 

4 BEDROOM INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Firebird Envirogreen Internal Combi HEC35 Combi ECE035DLX £2,300.00 2 5-10 26/35 20 93.00%
Firebird Envirogreen Internal Slimline Combi C35 Combi ECEO35SLM £2,300.00 2 5-10 26/35 15 93.00%
Grant VortexPro Internal Combi 36 Combi VTXCOMBI36 £2,450.00 2 5 26/36 20 94.56%
Worcester Bosch Heatslave II 25/32 Combi   £2,650.00 5 10 25/32 22 91.00%
Warmflow Utility HEE Combi 26-33 Combi UC120HEE £2,675.00 2 5-7 26/33 24 90.70%
Grant VortexBlue Internal Combi 36 Combi VTXBFCOMBI36 £2,825.00 2 10 26/36 20 94.56%

 

5+ BEDROOM INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Firebird Envirogreen Internal Combi HEC35 Combi ECE035DLX £2,300.00 2 5-10 26/35 20 93.00%
Firebird Envirogreen Internal Slimline Combi C35 Combi ECEO35SLM £2,300.00 2 5-10 26/35 15 93.00%
Grant VortexPro Internal Combi 36 Combi VTXCOMBI36 £2,450.00 2 5 36 20 94.56%
Worcester Bosch Heatslave II 25/32 Combi   £2,629.00 5 10 25/32 22 91.00%
Warmflow Utility HEE Combi 26-33 Combi UC120HEE £2,675.00 2 5-7 26/33 24 90.70%
Grant VortexBlue Internal Combi 36 Combi VTXBFCOMBI36 £2,825.00 2 10 36 20 94.56%

 

Heat only boilers

2 BEDROOMS INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant VortexEco Internal Utility 15-21 Regular VTXECO15/21 £1,200.00 2 5 15/21 N/A 92.70%
Firebird Envirogreen Kitchen 12-18 Regular EGE018KIT £1,300.00 2 5-10 12/18 N/A 92.50%
Grant VorteXPro Internal Utility 15-21 Regular VTX15/21 £1,325.00 2 10 15/21 N/A 90.81%
Firebird Envirogreen Kitchen C20 Regular EGE020KIT £1,325.00 2 5-10 12/20 N/A 92.60%
Warmflow Utility HE Pre-Wired Utility Series 15-21 Regular U70HE £1,350.00 2 5-7 15/21 N/A 90.70%
Firebird Envirogreen Popular 12-18kw Regular- Boilerhouse EGE018POP £1,350.00 2 5-10 12-18 N/A 91.60%
Grant Grant VortexEco Wall Hung Internal 12-16 Regular VTXWH12/16 £1,375.00 2 5 12/16 N/A 90.13%
Grant Grant VortexEco Wall Hung Internal 16-21 Regular VTXWH16/21 £1,400.00 2 5 16/21 N/A 90.52%
Firebird Envirogreen Popular C20 Regular- Boilerhouse EGE020POP £1,400.00 2 5-10 12/20 N/A 92.50%
Worcester Bosch Danesmoor Utility Regular 12/18 Regular   £1,450.00 5 10 12/18 N/A 90.00%
Worcester Bosch Danesmoor 12/18 Regular   £1,625.00 5 10 12/18 N/A 90.00%
Warmflow Utility HE Pre-Pumped 15-21 Regular UP70HE £1,650.00 2 5-7 15/21 N/A 90.70%
Grant VortexBlue Internal 21 Regular VTXBF21 £1,825.00 2 10 15/21 N/A 90.81%
Warmflow B-Series Pre-wired 15-21 Regular B70HE £1,875.00 2 5-7 15/21 N/A 85.50%
Firebird Blue Supreme Utility C20 Regular EBS020CUT £2,750.00 5 5-10 12/20 N/A 97.40%

 

3 BEDROOMS INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Warmflow B-Series Pre-wired 21-26 Regular B90HE £1,225.00 2 5-7 21/26 N/A 85.50%
Warmflow Utility HE Pre-Wired Utility Series 21-26 Regular U90HE £1,250.00 2 5-7 21/26 N/A 90.80%
Grant VortexEco Internal Utility 21-26 Regular VTXECO21/26 £1,300.00 2 5 21/26 N/A 91.70%
Firebird Envirogreen Popular C26 Regular- Boilerhouse EGE026POP £1,475.00 2 5-10 20/26 N/A 92.60%
Firebird Envirogreen Kitchen C26 Regular EGE026KIT £1,525.00 2 5-10 20/26 N/A 92.60%
Worcester Bosch Danesmoor Utility Regular 18/25 Regular   £1,575.00 5 10 18/25 N/A 90.00%
Grant VortexPro Internal Utility 15-26 Regular VTX15/26 £1,600.00 2 10 15/26 N/A 91.71%
Worcester Bosch Danesmoor 18/25 Regular   £1,700.00 5 10 18/25 N/A 90.00%
Warmflow Utility HE Pre-Pumped 21-26 Regular UP90HE £1,725.00 2 5-7 21/26 N/A 90.80%
Grant VortexBlue Internal 26 Regular VTXBF26 £1,825.00 2 10 21/26 N/A 91.71%
Firebird Blue Supreme Utility C26 Regular EBS026CUT £2,525.00 5 5-10 20/26 N/A 97.40%

 

4 BEDROOMS INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Warmflow Utility HE Pre-Wired Utility Series 26-33 Regular U120HE £1,425.00 2 5-7 26/33 N/A 90.70%
Warmflow B-Series Pre-wired 26-33 Regular B120HE £1,425.00 2 5-7 26/33 N/A 85.50%
Firebird Envirogreen Kitchen C35 Regular EGE035KIT £1,775.00 2 5-10 26/35 N/A 93.80%
Grant VortexPro Internal Utility 26-36 Regular VTX26/36 £1,800.00 2 10 26/36 N/A 93.30%
Firebird Envirogreen Popular C35 Regular- Boilerhouse EGE035POP £1,850.00 2 5-10 26/35 N/A 92.60%
Warmflow Utility HE Pre-Pumped 26-33 Regular UP120HE £1,900.00 2 5-7 26/33 N/A 90.70%
Worcester Bosch Danesmoor Utility Regular 25/32 Regular   £1,950.00 5 10 25/32 N/A 91.00%
Worcester Bosch Danesmoor 25/32 Regular   £2,100.00 5 10 25/32 N/A 91.00%

 

5+ BEDROOMS INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Firebird Envirogreen Kitchen C58 Regular EGE058KIT £250.00 2 5-10 44/58 N/A 97.40%
Grant VortexEco Internal Utility 26-35 Regular VTXECO26/35 £1,550.00 2 5 26/35 N/A 92.40%
Warmflow Utility HE Pre-Wired Utility Series 33-44 Regular U150HE £1,775.00 2 5-7 33/44 N/A 90.30%
Firebird Envirogreen Kitchen C35 Regular EGE035KIT £1,775.00 2 5-10 26/35 N/A 93.80%
Firebird Envirogreen Popular C35 Regular- Boilerhouse EGE035POP £1,850.00 2 5-10 26/35 N/A 92.60%
Firebird Envirogreen Kitchen C44 Regular EGE044KIT £1,925.00 2 5-10 35/44 N/A 93.00%
Grant VortexPro Internal Utility 36-46 Regular VTX36/46 £2,050.00 2 10 36/46 N/A 90.00%
Worcester Bosch Danesmoor Utility Regular 32/50 Regular   £2,100.00 5 10 32/50 N/A 90.00%
Grant VortexPro Internal Utility 46-58 Regular VTX46/58 £2,100.00 2 10 46/58 N/A 91.94%
Grant VortexBlue Internal 36 Regular VTXBF36 £2,125.00 2 10 36 N/A 94.56%
Grant VortexPro Internal Utility 58-70 Regular VTX58/70 £2,175.00 2 10 58/70 N/A 91.61%
Warmflow Utility HE Pre-Pumped 33-44 Regular UP150HE £2,225.00 2 5-7 33/44 N/A 90.30%
Worcester Bosch Danesmoor Utlity Regular 50/70 Regular   £2,275.00 5 10 50/70 N/A 90.00%
Firebird Envirogreen Popular C44 Regular- Boilerhouse EGE044POP £2,300.00 2 5-10 35/44 N/A 93.80%
Firebird Envirogreen Popular C58 Regular- Boilerhouse EGE058POP £2,450.00 2 5-10 44/58 N/A 93.00%

 

System Boilers

2 BEDROOMS INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant VortexEco Internal Utility System 15-21 System VTXSECO15/21 1450 2 5 15/21 N/A 92.70%
Firebird Envirogreen Internal System C20 System ESE020DLX 1525 2 5-10 12/20 N/A 92.50%
Grant VortexPro Internal Utility System 15-26 System VTXS15/21 1600 2 10 15/26 N/A 91.71%
Grant Grant VortexEco Wall Hunt internal System 12-16 System VTXSWH12/16 1625 2 5 12/16 N/A 90.13%
Grant Grant VortexEco Wall Hung Internal System 16-21 System VTXSWH16/21 1650 2 5 16/21 N/A 90.52%
Worcester Bosch Danesmoor System Utility 12/18 System   1675 5 10 12/18 N/A 90.00%
Warmflow Utility HE System 15-21 System US70HE 1700 2 5-7 15/21 N/A 90.70%
Worcester Bosch Danesmoor System 12/18 System   1750 5 10 12/18 N/A 90.00%
Grant VortexBlue Internal System 21 System VTXSBF21 2025 2 10 15/21 N/A 90.81%

 

3 BEDROOMS INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant VortexEco Internal Utility System 21-26 System VTXSECO21/26 1550 2 5 21/26 N/A 91.70%
Firebird Envirogreen Internal System C26 System ESE026DLX 1550 2 5-10 20/26 N/A 92.60%
Grant VortexPro Internal Utility System 15-26 System VTXS15/21 1600 2 10 15/26 N/A 91.71%
Grant Grant VortexEco Wall Hung Internal System 16-21 System VTXSWH16/21 1650 2 5 16/21 N/A 90.52%
Warmflow Utility HE System 21-26 System US90HE 1775 2 5-7 21/26 N/A 90.80%
Worcester Bosch Danesmoor System Utility 18/25 System   1850 5 10 18/25 N/A 90.00%
Worcester Bosch Danesmoor System 18/25 System   1900 5 10 18/25 N/A 90.00%
Grant VortexBlue Internal System 26 System VTXSBF26 2050 2 10 21/26 N/A 91.71%

 

4 BEDROOMS INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant VortexEco Internal Utility System 26-35 System VTXSECO26/35 1800 2 5 26/35 N/A 92.40%
Firebird Envirogreen Internal System C35 System ESE035DLX 1900 2 5-10 26/35 N/A 92.60%
Warmflow Utility HE System 26-33 System US120HE 1975 2 5-7 26/33 N/A 90.70%
Worcester Bosch Danesmoor System 25/32 System   2300 5 10 25/32 N/A 91.00%
Worcester Bosch Danesmoor System Utility 25/32 System   2300 5 10 25/32 N/A 91.00%

 

5+ BEDROOMS INTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant VortexEco Internal Utility System 26-35 System VTXSECO26/35 1800 2 5 26/35 N/A 92.40%
Firebird Envirogreen Internal System C35 System ESE035DLX 1900 2 5-10 26/35 N/A 92.60%
Warmflow Utility HE System 26-33 System US120HE 1975 2 5-7 26/33 N/A 90.70%
Grant VortexPro Internal Utility System 26-36 System VTXS26/36 2025 2 10 26/36 N/A 93.30%
Firebird Envirogreen Internal System C44 System ESE044DLX 2125 2 5-10 35/55 N/A 93.80%
Worcester Bosch Danesmoor System 25/32 System   2300 5 10 25/32 N/A 91.00%
Worcester Bosch Danesmoor System Utility 25/32 System   2300 5 10 25/32 N/A 91.00%
Grant VortexPro Internal Utility System 36-46 System VTXS36/40 2350 2 10 36/46 N/A 90.00%
Grant VortexBlue Internal System 36 System VTXSBF36 2375 2 10 26/36 N/A 94.56%

 

External oil boiler prices

Combi boilers

2 BEDROOM EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Firebird Envirogreen External Combipac HEC20 Combi ECE020CPK £2,125.00 2 5-10 12/20 16 93.00%
Grant VortexPro External Combi 21 Combi VTXOMCOMBI21 £2,225.00 2 5 15/21 15 90.81%
Warmflow K-Series Combi External 15-21 Combi KC70HEE £2,325.00 2 5-7 15/21 18 89.10%
Worcester Bosch Heatslave II External 12/18 Combi   £2,450.00 5 10 12/18 15 90.00%
Grant VortexBlue External Combi 21 Combi VTXBFOMCOMB21 £2,550.00 2 10 15/21 15 90.81%
Worcester Bosch Heatslave II External 18/25 Combi   £2,600.00 5 10 18/25 18 90.00%

 

3 BEDROOM EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Firebird Envirogreen External Combipac HEC26 Combi ECE026CPK £2,200.00 2 5-10 20/26 16 93.00%
Grant VortexPro External Combi 26 Combi VTXOMCOMBI26 £2,400.00 2 5 21/26 17 91.71%
Grant VortexBlue External Combi 26 Combi VTXBFOMCOMB26 £2,525.00 2 10 21/26 17 91.71%
Warmflow K-Series Combi External 21-26 Combi KC90HEE £2,550.00 2 5-7 21/26 24 89.50%
Worcester Bosch Heatslave II External 18/25 Combi   £2,600.00 5 10 18/25 18 90.00%
Worcester Bosch Heatslave II External 25/32 Combi   £2,750.00 5 10 25/32 22 91.00%

 

4 BEDROOM EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Firebird Envirogreen External Combipac HEC35 Combi ECEO35CPK £2,475.00 2 5-10 26/35 20 93.00%
Grant VortexPro External Combi 36 Combi VTXOMCOMBI36 £2,575.00 2 5 26/36 20 94.56%
Warmflow K-Series Combi External 26-33 Combi KC120HEE £2,575.00 2 5-7 26/33 24 89.10%
Worcester Bosch Heatslave II External 25/32 Combi   £2,750.00 5 10 25/32 22 91.00%
Grant VortexBlue External Combi 36 Combi VTXBFOMCOM36 £2,950.00 2 10 26/36 20 94.56%

 

5+ BEDROOM EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Firebird Envirogreen External Combipac HEC35 Combi ECEO35CPK £2,475.00 2 5-10 26/35 20 93.00%
Grant VortexPro External Combi 36 Combi VTXOMCOMBI36 £2,575.00 2 5 36 20 94.56%
Warmflow K-Series Combi External 26-33 Combi KC120HEE £2,575.00 2 5-7 26/33 24 89.10%
Worcester Bosch Heatslave II External 25/32 Combi   £2,736.11 5 10 25/32 22 91.00%
Grant VortexBlue External Combi 36 Combi VTXBFOMCOM36 £2,950.00 2 10 36 20

94.56%

 

 

Heat only boilers

2 BEDROOMS EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant Vortex Boiler House 15-21 Regular VTXBH1521 £1,175.00 2 5 15/21 N/A 92.70%
Grant VortexEco External 15-21 Regular VTXOMECO15-21 £1,400.00 2 5 15/21 N/A 92.70%
Warmflow K-Series Pre-Wired External 15-21 Regular K70HE £1,450.00 2 5-7 15/21 N/A 90.70%
Grant VortexPro External 15-21 Regular VTXOM15/21 £1,550.00 2 5 15/21 N/A 90.81%
Firebird Envirogreen External Slimline Heatpac C20 Regular EGE020SLM £1,600.00 2 5-10 12/20 N/A 92.50%
Grant VortexEco Wall Hung External 12-16 Regular VTXOMWH12/16 £1,725.00 2 5 12/16 N/A 90.13%
Firebird Envirogreen External Heatpac 12-18kw Regular EGE018HPK £1,725.00 2 5-10 12-18 N/A 91.60%
Worcester Bosch Danesmoor Regular External 12/18 Regular   £1,825.00 5 10 12/18 N/A 90.00%
Warmflow K-Series Pre-Pumped External 15-21 Regular KP70HE £1,875.00 2 5-7 15/21 N/A 90.70%
Firebird Envirogreen External Heatpac C20 Regular EGE020HPK £1,900.00 2 5-10 12/20 N/A 92.50%
Grant VortexEco Wall Hung External 16-21 Regular VTXOMWH16/21 £1,975.00 2 5 16/21 N/A 90.52%
Grant VortexBlue External 21 Regular VTXBFOM21 £2,025.00 2 5 15/21 N/A 90.81%
Firebird Blue Supreme External Slimline Heatpac C20 Regular EBS020SLM £2,400.00 2 5-10 12/20 N/A 97.40%

 

3 BEDROOMS EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant Vortex Boiler House 21-26 Regular VTXBH2125 £1,150.00 2 5 21/26 N/A 91.70%
Grant VortexEco External 21-26 Regular VTXOMECO21-26 £1,550.00 2 5 21/26 N/A 91.70%
Firebird Envirogreen External Slimline Heatpac C26 Regular EGE026SLM £1,625.00 2 5-10 20/26 N/A 92.60%
Warmflow K-Series Pre-Wired External 21-26 Regular K90HE £1,700.00 2 5-7 21/26 N/A 90.80%
Grant VortexPro External 15-26 Regular VTXOM15/26 £1,725.00 2 5 15/26 N/A 91.71%
Worcester Bosch Danesmoor Regular External 18/25 Regular   £1,900.00 5 10 18/25 N/A 90.00%
Warmflow K-Series Pre-Pumped External 21-26 Regular KP90HE £1,925.00 2 5-7 21/26 N/A 90.80%
Firebird Envirogreen External Heatpac C26 Regular EGE026HPK £2,000.00 2 5-10 20/26 N/A 92.60%
Grant VortexBlue External 26 Regular VTXBFOM26 £2,100.00 2 5 26/36 N/A 91.71%
Firebird Blue Supreme External Slimline Heatpac C26 Regular EBS026SLM £2,475.00 2 5-10 20/26 N/A 97.40%

 

4 BEDROOMS EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Firebird Envirogreen External Slimline Heatpac C35 Regular EGE035SLM £1,650.00 2 5-10 26/35 N/A 92.60%
Warmflow K-Series Pre-Wired External 26-33 Regular K120HE £2,050.00 2 5-7 26/33 N/A 90.70%
Worcester Bosch Danesmoor Regular External 25/32 Regular   £2,275.00 5 10 25/32 N/A 91.00%
Warmflow K-Series Pre-Pumped External 26-33 Regular KP120HE £2,300.00 2 5-7 26/33 N/A 90.70%
Firebird Envirogreen External Heatpac C35 Regular EGE035HPK £2,500.00 2 5-10 26/35 N/A 92.60%

 

5+ BEDROOMS EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant Vortex Boiler House 26-35 Regular VTXBH2635 £1,575.00 2 5 26/35 N/A 92.40%
Firebird Envirogreen External Slimline Heatpac C35 Regular EGE035SLM £1,650.00 2 5-10 26/35 N/A 92.60%
Grant VortexEco External 26-35 Regular VTXOMECO26-35 £1,775.00 2 5 26/35 N/A 92.40%
Grant Vortex Boiler House 36-46 Regular VTXBH3646 £1,850.00 2 5 36/46 N/A 90.06%
Grant Vortex Boiler House 46-58 Regular VTXBH4658 £2,025.00 2 5 46/58 N/A 91.98%
Grant VortexPro External 26-36 Regular VTXOM26/36 £2,050.00 2 5 26/36 N/A 94.56%
Grant Vortex Boiler House 58-70 Regular VTXBH5870 £2,100.00 2 5 58/70 N/A 91.66%
Firebird Envirogreen External Heatpac C44 Regular EGE044HPK £2,275.00 2 5-10 35/44 N/A 93.80%
Grant VortexBlue External 36 Regular VTXBFOM36 £2,300.00 2 5 36 N/A 94.56%
Grant VortexPro External 36-46 Regular VTXOM36/46 £2,300.00 2 5 36/46 N/A 90.00%
Grant VortexPro External 46-58 Regular VTXOM46/58 £2,400.00 2 5 46/58 N/A 91.94%
Firebird Envirogreen External Heatpac C58 Regular EGE058HPK £2,425.00 2 5-10 44/58 N/A 93.00%
Warmflow K-Series Pre-Wired External 33-44 Regular K150HE £2,425.00 2 5-7 33/44 N/A 90.30%
Firebird Envirogreen External Heatpac C35 Regular EGE035HPK £2,500.00 2 5-10 26/35 N/A 92.60%
Grant VortexPro External 58-70 Regular VTXOM58/70 £2,550.00 2 5 58/70 N/A 91.61%
Warmflow K-Series Pre-Pumped External 33-44 Regular KP150HE £2,725.00 2 5-7 33/44 N/A 90.30%

 

System boilers

2 BEDROOMS EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant VortexEco External System 15-21 System VTXSOMECO15-21 1675 2 5 15/21 N/A 92.70%
Firebird Envirogreen External Systempac C20 System ESE020NKT 1775 2 5-10 12/20 N/A 92.50%
Firebird Envirogreen External Slimline Systempac C20 System ESE020SLM 1775 2 5-10 12/20 N/A 92.50%
Grant VortexEco Wall Hung External System 12-16 System VTXSOMWH12/16 1875 2 5 12/16 N/A 90.13%
Warmflow K-Series System External 15-21 System KS70HE 1925 2 5-7 15/21 N/A 90.70%
Grant VortexEco Wall Hung External System 16-21 System VTXSOMWH16/21 2000 2 5 16/21 N/A 90.52%
Worcester Bosch Danesmoor External System 12/18 System   2075 5 10 12/18 N/A 90.00%

 

3 BEDROOMS EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant VortexEco External System 21-26 System VTXSOMECO21-26 1800 2 5 21/26 N/A 91.70%
Firebird Envirogreen External Systempac C26 System ESE026NKT 1850 2 5-10 20/26 N/A 92.60%
Firebird Envirogreen External Slimline Systempac C26 System ESE026SLM 1850 2 5-10 20/26 N/A 92.60%
Warmflow K-Series System External 21-26 System KS90HE 1975 2 5-7 21/26 N/A 90.80%
Grant VortexEco Wall Hung External System 16-21 System VTXSOMWH16/21 2000 2 5 16/21 N/A 90.52%
Worcester Bosch Danesmoor External System 18/25 System   2250 5 10 18/25 N/A 90.00%

 

4 BEDROOMS EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant VortexEco External System 26-35 System VTXSOMECO26-35 2075 2 5 26/35 N/A 92.40%
Firebird Envirogreen External Systempac C35 System ESE035NKT 2225 2 5-10 26/35 N/A 92.60%
Firebird Envirogreen External Slimline Systempac C35 System ESE035SLM 2225 2 5-10 26/35 N/A 92.60%
Warmflow K-Series System External 26-33 System KS120HE 2375 2 5-7 26/33 N/A 90.70%
Worcester Bosch Danesmoor External System 25/32 System   2600 5 10 25/32 N/A 91.00%

 

5+ BEDROOMS EXTERNAL Boiler type Model Price Warranty Free extended warranty KW output range Hot water flow rate Efficiency
Grant VortexEco External System 26-35 System VTXSOMECO26-35 2075 2 5 26/35 N/A 92.40%
Firebird Envirogreen External Systempac C35 System ESE035NKT 2225 2 5-10 26/35 N/A 92.60%
Firebird Envirogreen External Slimline Systempac C35 System ESE035SLM 2225 2 5-10 26/35 N/A 92.60%
Warmflow K-Series System External 26-33 System KS120HE 2375 2 5-7 26/33 N/A 90.70%
Firebird Envirogreen External Systempac C44 System ESE044NKT 2400 2 5-10 35/44 N/A 93.80%
Worcester Bosch Danesmoor External System 25/32 System   2600 5 10 25/32 N/A 91.00%

 

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