Menu
Track Order
0 Basket
Click and Collect
From your local City Plumbing store
Free Standard delivery
Free Standard delivery

System Boilers

System boilers heat your central heating system and produce hot water from an unvented storage cylinder. These boilers operate similar to regular (conventional) boilers by storing hot water, but they differ in how they take in their water supply. In this section of the website, you'll find a selection of system boilers in a variety of sizes, controller types and other features.

 
 

Filter By
263 results

Check stock in your area

Delivery and collection options for

Change location

Delivery Options

Home delivery(263)

Click & Collect(8)

Brand

Worcester(154)

Ideal Heating(30)

Vaillant(22)

Warmflow(12)

Firebird(11)

Baxi(9)

Grant(8)

Viessmann(8)

Glow-worm(6)

Main(2)

Keston(1)

View More

Boiler/Product Type

Boiler Pack(78)

Gas Boiler(29)

Heat Only (Regular) Boiler(28)

LPG Boiler(7)

System Boiler(70)

Other(51)

View More

Fuel Type

Natural Gas(135)

LPG(15)

Oil(37)

Other(76)

Range

Greenstar 8000+(24)

Vogue Max(2)

Greenstar 4000(19)

800(2)

818(1)

System 2 S30(1)

Vitodens 200-W(1)

Vitodens 100-W(5)

Vitodens 050-W(2)

Energy7(5)

System 2(3)

Logic2 Max(2)

Logic2(5)

Vortex Pro(1)

Vortex Eco(6)

Vortex(1)

Vogue(4)

Other(100)

Agentis(12)

Logic+(4)

Logic Max(1)

Greenstar Ri(7)

Greenstar i System(4)

Greenstar i(4)

Greenstar Danesmoor Utility System(3)

Greenstar Danesmoor External System(3)

Envirogreen(11)

ecoTEC Plus(6)

ecoFIT Pure(17)

Eco Compact(2)

Easicom(1)

Condens(1)

Assure(3)

View More

Category

Boiler Packs

Boilers

ErP Rating

ErP A(121)

Other(142)

Heat Output (kW)

10(1)

11(2)

12(7)

15(22)

18(19)

19(2)

20(4)

21(9)

24(30)

25(13)

26(8)

27(8)

30(66)

32(6)

33(4)

35(38)

40(2)

44(2)

45(2)

46(1)

50(2)

65(1)

Other(14)

View More

Price

£
to

£860-£1430(60)

£1430-£1620(30)

£1620-£1810(43)

£1810-£2000(34)

£2000-£2370(56)

£2370-£3870(40)

View More

Guarantee (Years)

2(46)

3(1)

5(32)

7(29)

8(3)

10(18)

12(24)

Other(110)

View More

Stock Status

In Stock Only(248)

Width (mm)

370(3)

390(16)

395(14)

400(25)

413(12)

418(1)

430(3)

440(30)

442(4)

445(6)

450(1)

465(3)

470(2)

505(3)

550(1)

565(3)

720(3)

839(1)

Other(132)

View More


Filter By
263 results

Check stock in your area

Delivery and collection options for

Change location

Delivery Options

Home delivery(263)

Click & Collect(8)

Brand

Worcester(154)

Ideal Heating(30)

Vaillant(22)

Warmflow(12)

Firebird(11)

Baxi(9)

Grant(8)

Viessmann(8)

Glow-worm(6)

Main(2)

Keston(1)

View More

Boiler/Product Type

Boiler Pack(78)

Gas Boiler(29)

Heat Only (Regular) Boiler(28)

LPG Boiler(7)

System Boiler(70)

Other(51)

View More

Fuel Type

Natural Gas(135)

LPG(15)

Oil(37)

Other(76)

Range

Greenstar 8000+(24)

Vogue Max(2)

Greenstar 4000(19)

800(2)

818(1)

System 2 S30(1)

Vitodens 200-W(1)

Vitodens 100-W(5)

Vitodens 050-W(2)

Energy7(5)

System 2(3)

Logic2 Max(2)

Logic2(5)

Vortex Pro(1)

Vortex Eco(6)

Vortex(1)

Vogue(4)

Other(100)

Agentis(12)

Logic+(4)

Logic Max(1)

Greenstar Ri(7)

Greenstar i System(4)

Greenstar i(4)

Greenstar Danesmoor Utility System(3)

Greenstar Danesmoor External System(3)

Envirogreen(11)

ecoTEC Plus(6)

ecoFIT Pure(17)

Eco Compact(2)

Easicom(1)

Condens(1)

Assure(3)

View More

Category

Boiler Packs

Boilers

ErP Rating

ErP A(121)

Other(142)

Heat Output (kW)

10(1)

11(2)

12(7)

15(22)

18(19)

19(2)

20(4)

21(9)

24(30)

25(13)

26(8)

27(8)

30(66)

32(6)

33(4)

35(38)

40(2)

44(2)

45(2)

46(1)

50(2)

65(1)

Other(14)

View More

Price

£
to

£860-£1430(60)

£1430-£1620(30)

£1620-£1810(43)

£1810-£2000(34)

£2000-£2370(56)

£2370-£3870(40)

View More

Guarantee (Years)

2(46)

3(1)

5(32)

7(29)

8(3)

10(18)

12(24)

Other(110)

View More

Stock Status

In Stock Only(248)

Width (mm)

370(3)

390(16)

395(14)

400(25)

413(12)

418(1)

430(3)

440(30)

442(4)

445(6)

450(1)

465(3)

470(2)

505(3)

550(1)

565(3)

720(3)

839(1)

Other(132)

View More


Filter Results
263 results
worcester-greenstar-4000-15kw-system-boiler-natural-gas

Worcester Bosch Greenstar 4000 15kW System Gas Boiler - 7733600379

Worcester
£1,311.36 inc
VAT
✓ 21 In Stock
worcester-greenstar-4000-12kw-system-boiler-natural-gas

Worcester Bosch Greenstar 4000 12kW System Gas Boiler - 7733600377

Worcester
£1,248.84 inc
VAT
✓ 15 In Stock
worcester-greenstar-4000-18kw-system-boiler-natural-gas

Worcester Bosch Greenstar 4000 18kW System Gas Boiler - 7733600381

Worcester
£1,336.33 inc
VAT
✓ 22 In Stock
worcester-greenstar-4000-21kw-system-boiler-natural-gas

Worcester Bosch Greenstar 4000 21kW System Gas Boiler - 7733600383

Worcester
£1,427.14 inc
VAT
✓ 12 In Stock
worcester-greenstar-4000-24kw-system-boiler-natural-gas

Worcester Bosch Greenstar 4000 24kW System Gas Boiler - 7733600385

Worcester
£1,479.00 inc
VAT
✓ 31 In Stock
worcester-greenstar-4000-15kw-system-boiler-lpg

Worcester Greenstar 4000 15kW System Boiler LPG - 7733600380

Worcester
£1,424.95 inc
VAT
✓ 5 In Stock
worcester-greenstar-4000-18kw-system-boiler-lpg

Worcester Greenstar 4000 18kW System Boiler LPG - 7733600382

Worcester
£1,492.73 inc
VAT
✓ In Stock
worcester-greenstar-4000-12kw-system-boiler-lpg

Worcester Greenstar 4000 12kW System Boiler LPG - 7733600378

Worcester
£1,350.26 inc
VAT
✓ In Stock
worcester-greenstar-4000-21kw-system-boiler-lpg

Worcester Greenstar 4000 21kW System Boiler LPG - 7733600384

Worcester
£1,577.76 inc
VAT
✓ In Stock
worcester-greenstar-4000-24kw-system-boiler-lpg

Worcester Greenstar 4000 24kW System Boiler LPG - 7733600386

Worcester
£1,621.43 inc
VAT
✓ 10 In Stock
worcester-greenstar-4000-12kw-system-boiler-vertical-flue

Worcester Greenstar 4000 12kW System Boiler & Vertical Flue

More Options Available
Worcester
£1,377.47 inc
VAT
✓ 15 In Stock
worcester-greenstar-4000-12kw-system-boiler-horizontal-flue

Worcester Greenstar 4000 12kW System Boiler & Horizontal Flue

More Options Available
Worcester
£1,343.60 inc
VAT
✓ 15 In Stock
worcester-greenstar-4000-15kw-system-boiler-horizontal-flue

Worcester Greenstar 4000 15kW System Boiler & Horizontal Flue

More Options Available
Worcester
£1,405.74 inc
VAT
✓ 21 In Stock
worcester-greenstar-4000-18kw-system-boiler-horizontal-flue

Worcester Greenstar 4000 18kW System Boiler & Horizontal Flue

More Options Available
Worcester
£1,467.65 inc
VAT
✓ 22 In Stock
worcester-greenstar-4000-18kw-system-boiler-vertical-flue

Worcester Greenstar 4000 18kW System Boiler & Vertical Flue

More Options Available
Worcester
£1,501.51 inc
VAT
✓ 22 In Stock
worcester-greenstar-4000-24kw-system-boiler-horizontal-flue

Worcester Greenstar 4000 24kW System Boiler & Horizontal Flue

More Options Available
Worcester
£1,604.45 inc
VAT
✓ 31 In Stock
worcester-greenstar-4000-21kw-system-boiler-vertical-flue

Worcester Greenstar 4000 21kW System Boiler & Vertical Flue

More Options Available
Worcester
£1,591.25 inc
VAT
✓ 12 In Stock
worcester-greenstar-4000-24kw-system-boiler-vertical-flue

Worcester Greenstar 4000 24kW System Boiler & Vertical Flue

More Options Available
Worcester
£1,638.31 inc
VAT
✓ 31 In Stock
firebird-envirogreen-c20-system-oil-boiler

Firebird Envirogreen C20 20kW System Oil Boiler - ESE020DLX

Firebird
£2,073.14 inc
VAT
✓ In Stock
firebird-envirogreen-c26-system-oil-boiler

Firebird Envirogreen C26 26kW System Oil Boiler - ESE026DLX

Firebird
£2,381.99 inc
VAT
✓ In Stock
firebird-envirogreen-c35-system-oil-boiler

Firebird Envirogreen C35 35kW System Oil Boiler - ESE035DLX

Firebird
£2,978.39 inc
VAT
✓ In Stock
firebird-envirogreen-c44-system-oil-boiler

Firebird Envirogreen C44 44kW System Oil Boiler - ESE044DLX

Firebird
£3,316.55 inc
VAT
✓ In Stock
firebird-envirogreen-systempac-c20-external-system-oil-boiler

Firebird Envirogreen Systempac C20 20kW External System Oil Boiler - ESE020NKT

Firebird
£2,779.19 inc
VAT
✓ In Stock
firebird-envirogreen-systempac-c26-external-system-oil-boiler

Firebird Envirogreen Systempac C26 26kW External System Oil Boiler - ESE026NKT

Firebird
£2,889.59 inc
VAT
✓ In Stock
firebird-envirogreen-systempac-c35-external-system-oil-boiler

Firebird Envirogreen Systempac C35 35kW External System Oil Boiler - ESE035NKT

Firebird
£3,580.79 inc
VAT
✓ In Stock
firebird-envirogreen-systempac-c44-external-system-oil-boiler

Firebird Envirogreen Systempac C44 44kW External System Oil Boiler - ESE044NKT

Firebird
£3,865.19 inc
VAT
✓ In Stock
firebird-envirogreen-slimline-systempac-c20-external-system-oil-boiler

Firebird Envirogreen Slimline Systempac C20 20kW External System Oil Boiler - ESE020SLM

Firebird
£2,551.79 inc
VAT
✓ In Stock
firebird-envirogreen-slimline-systempac-c26-external-system-oil-boiler

Firebird Envirogreen Slimline Systempac C26 25kW External System Oil Boiler - ESE026SLM

Firebird
£2,869.51 inc
VAT
✓ In Stock
firebird-envirogreen-slimline-systempac-c35-external-system-oil-boiler

Firebird Envirogreen Slimline Systempac C35 35kW External System Oil Boiler - ESE035SLM

Firebird
£3,152.65 inc
VAT
✓ In Stock
main-eco-compact-18kw-natural-gas-system-boiler-erp

Main Eco Compact 18kW Natural Gas System Boiler - 7714606

Main
£996.16 inc
VAT
✓ 24 In Stock
main-eco-compact-15kw-natural-gas-system-boiler-erp

Main Eco Compact 15kW Natural Gas System Boiler - 7714605

Main
£862.97 inc
VAT
✓ 42 In Stock
warmflow-agentis-15-21kw-professional-external-system-oil-boiler

Warmflow Agentis 15-21kW Professional External System Oil Boiler - E21SPRO

More Options Available
Warmflow
£2,798.60 inc
VAT
✓ In Stock
warmflow-agentis-21-27kw-professional-external-system-oil-boiler

Warmflow Agentis 21-27kW Professional External System Oil Boiler - E26SPRO

More Options Available
Warmflow
£2,734.60 inc
VAT
✓ In Stock
1 2 … 7 8