Main Water Boilers for sale

MAIN ECO COMPACT SYSTEM 15 18 & COMBI 25 30 BOILER PCB 7688421
Excellent - Refurbished · Main
£66.00 to £96.00
Free postage
Est. delivery Thu, Aug 7
55 sold
Refurbished on eBay
Energy Rating A+++
MAIN COMBI 30 ECO & 30 ECO ELITE BOILER MAIN PCB 5131265
New (other) · Main
£45.00
Free postage
Est. delivery Wed, Aug 6
MAIN COMBI 30 ECO & 30 ECO ELITE BOILER MAIN PCB 5131265
New (other) · Main
£42.99
Free postage
Est. delivery Wed, Aug 6
30 sold
Energy Rating A++
MAIN COMBI 24 24 30 HE 24HE 30HE DIVERTER VALVE 248061 7224344
New (other) · Main
£69.99
(£69.99/Unit)
Free postage
Est. delivery Thu, Aug 7
360 sold
Main Combi 25 30 Eco Elite 3 Way Diverter Valve Cartridge Valve Motor - 248733
Brand new · Main
£26.85
Free postage
Main Combi 24SE 24HE 30HE DHW Diaphragm, Repair Kit 5111137
Brand new · Main
£3.45
Free postage
Est. delivery Thu, Aug 7
50 sold
MAIN COMBI 25 & 30 ECO ELITE TEMPERATURE SENSOR THERMISTER 5114725
Brand new · Main
£4.50
Free postage
153 sold
Main Combi 24, 24HE, Performa 24 ECO HE PCB 5112657
Excellent - Refurbished · Main
£55.20
Free postage
Est. delivery Thu, Aug 7
150 sold
Refurbished on eBay
Main Combi 25, 30 Eco & Elite Domestic Hot Water Heat Exchanger 248048 7225723
Brand new · Main
(1)
£33.35
Free postage
Est. delivery Thu, Aug 7
62 sold
MAIN COMBI ERP ECO ELITE 24 28 COMBI ERP BOILER BURNER PLATE GASKET 5130582
Brand new · Main
£22.33
Free postage
Est. delivery Thu, Aug 7
3 watching
Main Combi 24, 24HE, Performa 24 ECO HE PCB 5112657 See List Below
Excellent - Refurbished · Main
£52.44
Free postage
Est. delivery Wed, Aug 6
Refurbished on eBay
MAINS MEDWAY SUPER BOILER WATER VALVE 10/18907 COME WITH 1 YEAR WARRANTY
Pre-owned · Main
£60.00
£6.50 P&P
MAIN COMBI 24SE 24HE 30HE THERMISTER TEMPERATURE SENSOR 5108265 WAS 247394 NEW
Brand new · Main
(5)
£4.20
Free postage
Est. delivery Thu, Aug 7
368 sold
Energy Rating A
MAIN MULTI POINT FF WATER HEATER PCB 5111408
New (other) · Main
£49.99
Free postage
Est. delivery Wed, Aug 6
12 sold
Energy Rating A++
MAIN HEATING ONLY 9HE 12 15 18 20 & 24 BOILER FAN 5112320 1 YEAR WARRANTY
Pre-owned · Main
£60.00
£7.00 P&P
Main Combi 24 24HE, 30HE Diverter Valve Repair Kit 248061RK 248061 248062**NEW**
Brand new · Main
£16.99
Free postage
MAIN COMBI 25ECO ELITE & 30ECO ELITE BOILER AUTO AIR VENT 5130570
Brand new · Main
£8.95
Free postage
Main Combi 24 24HE 30HE Complete Full Diverter Valve Repair Kit 248061 RK 248062
Brand new · Main
£21.73
Free postage
Est. delivery Thu, Aug 7
136 sold
Energy Rating A+++
Main Combi 24 & 24HE DHW Plate Heat Exchanger Part No: 248046 ALFA LAVAL NEW
Brand new · Baxi
(23)
£31.87
Free postage
MAIN COMBI 24 HE 30 HE BOILER OVER HEAT LIMIT THERMOSTAT 248079
Brand new · Main
(4)
£4.18
Free postage
Est. delivery Thu, Aug 7
85 sold
MAIN MULTIPOINT BF WATER VALVE PART 5110959
Brand new · Main
£165.00
Free postage
Only 3 left
MAIN COMBI 25 & 30 ECO & ECO ELITE 01.76.5094.1 MECHANICAL CLOCK TIMER 247206
Excellent - Refurbished · Main
(2)
£10.80
Free postage
Est. delivery Thu, Aug 7
228 sold
Refurbished on eBay
MAIN MULTIPOINT BF & BF ERP WATER HEATER THERMOCOUPLE TWIN CABLE 5110886
Brand new · Main
£74.99
(£74.99/Unit)
Free postage
2 watching
Main Multipoint BF Water Heater Thermocouple 5110886 Inc. VAT Next Day Option
Brand new · Main
(6)
£37.08
(£37.08/Unit)
or Best Offer
£2.70 P&P
MAIN COMBI 30 ECO Boiler RRP 1499
Pre-owned · Main
£290.84
or Best Offer
£19.99 P&P
MAIN COMBI 30HE & SYSTEM 18HE 24HE 28HE BOILER PCB 5112380
Excellent - Refurbished · Main
£34.80
Free postage
Est. delivery Thu, Aug 7
49 sold
Refurbished on eBay
Energy Rating A+++
MAIN COMBI 30 HE BOILER FAN ASSEMBLY 5112430
Excellent - Refurbished · Main
(1)
£41.04
Free postage
Est. delivery Wed, Aug 6
Refurbished on eBay
Main Medway Super Thames Diaphragm 10/17467 See List Below
Brand new · Main
(13)
£4.02
Free postage
Est. delivery Thu, Aug 7
33 sold
Main Multipoint Water Heater
Pre-owned · Main
£333.08
or Best Offer
Collection in person
MAIN COMBI 24HE 30HE 25 ECO & 25 ELITE BOILER BOILER PUMP 248042
New (other) · Main
£38.99
(£38.99/Unit)
Free postage
Est. delivery Thu, Aug 7
Main Combi 25 30 Eco Elite Diverter Valve 7224764 was 5132456
New (other) · Main
£36.00 to £66.00
Free postage
Est. delivery Wed, Aug 6
Energy Rating A++
Main Combi 25,30 Eco Ignition Electrode Kit MPN 5130293
Brand new · Main
(12)
£27.89
(£27.89/Unit)
Free postage
Est. delivery Thu, Aug 7
Main Multipoint BF Water Heater Thermocouple 5110886 Inc. VAT Next Day Option
Brand new · Main
(6)
£74.99
(£74.99/Unit)
Free postage
4 watching
MAIN COMBI 24 24 HE 30 HE DHW HYDRAULIC VENTURI 248051 248050
Brand new · Main
£13.87
Free postage
Est. delivery Thu, Aug 7
50 sold
MAIN 25 & 30 ECO COMBI 3 WAY DIVERTER VALVE ASSEMBLY 5118381 7224763
Brand new · Main
£59.56
Free postage
Est. delivery Thu, Aug 7
MAIN COMBI 25 ECO & 25 ECO ELITE ERP PRINTED CIRCUIT BOARD PCB 7679746, 5131264
Brand new · Main
£73.48
or Best Offer
£2.94 P&P
Energy Rating A
Main 5110843 OUTER CASE ONLY Multipoint BF Water Heater - (THIS IS NOT A BOILER)
Brand new · Main
£149.99
Free postage
Est. delivery Thu, Aug 7
MAIN COMBI 25 30 ECO & 25 30 ECO ELITE BOILER BURNER PLATE GASKET 5130582
Brand new · Main
£22.50
Free postage
29 sold
Combi Eco Elite 30kW Gas Boiler (Main)
Pre-owned · Main
£312.68
or Best Offer
Collection in person
Energy Rating A
MAIN COMBI 24HE 30HE 25 ECO & 25 ELITE BOILER PUMP 248042
New (other) · Main
£41.00
Free postage
Est. delivery Wed, Aug 6
Energy Rating A++
Genuine Grant AAV - MPCBS29 All Boilers
Brand new · Main
£14.00
(£14.00/Unit)
Free postage
Main Combi 25 30 Eco Elite 3 Way Diverter Valve Cartridge Kit 720003100
Brand new · Main
(1)
£13.60
Free postage
Est. delivery Thu, Aug 7
124 sold
MAIN COMBI 25 ECO & 30 ECO MAGNETIC FLOW SWITCH SUITABLE 5114710
Brand new · Main
£12.19
Free postage
MAIN COMBI 25 30 ECO & 25 30 ECO ELITE BOILER FAN 5121447
Excellent - Refurbished · Main
(3)
£41.04
Free postage
Est. delivery Thu, Aug 7
Refurbished on eBay
MAIN COMBI 30 HE DIVERTER VALVE 248061- 7224344
Brand new · Main
£89.50
Free postage
Only 3 left
MAIN ECO COMPACT SYSTEM 15 18 & COMBI 25 30 BOILER PCB 7688421
New (other) · Main
£59.00
Free postage
Est. delivery Wed, Aug 6
Energy Rating A+++
Main Combi Eco 25 & 30 Diverter MOTOR & CARTRIDGE 720003100 & 248733 7224764
Brand new · Main
£26.95
Free postage
152 sold
Main Boiler Pump Head (15-60) UPM4 7713520
Brand new · Main
£123.50
Free postage
Est. delivery Thu, Aug 7
MAIN COMBI 24 30 HE DIVERTER VALVE 248061- 7224344
Brand new · Main
£89.50
Free postage
Energy Rating A+++
MAIN COMBI 25 30 ECO & 25 30 ECO ELITE BOILER FLOW SENSOR 5114767
Brand new · Main
£11.40
Free postage
Est. delivery Thu, Aug 7
Main Combi 30 HE DHW Heat Exchanger 16 Plates 248048 7225723
Excellent - Refurbished · Main
(1)
£28.80
Free postage
Est. delivery Thu, Aug 7
42 sold
Refurbished on eBay
Energy Rating A+++
MAIN COMBI 30 ECO & ECO ELITE BOILER MAIN PCB 5131265
Excellent - Refurbished · Main
£49.20
Free postage
Est. delivery Thu, Aug 7
62 sold
Refurbished on eBay
Energy Rating A+++
Main Eco compact Combi Boiler Pressure Relief Valve (PRV) 7683976 New
Brand new · Main
£18.00
(£18.00/Unit)
Free postage
Est. delivery Thu, Aug 7
Main Combi 25 30 Eco Elite Diverter Valve 5132456 Brand New
Brand new · Main
£62.64
Free postage
Est. delivery Thu, Aug 7
MAIN COMBI ECO ELITE 25 COMBI ERP BOILER MAIN PRINTED CIRCUIT BOARD PCB 5131264
Excellent - Refurbished · Main
(1)
£41.51
Free postage
Est. delivery Thu, Aug 7
Refurbished on eBay
MAIN COMBI 25ECO ELITE & 30ECO ELITE TEMPERATURE SENSOR THERMISTER 5114725
Brand new · Main
£3.52
Free postage
Est. delivery Thu, Aug 7
48 sold
MAIN COMBI 30 ECO & 30 ECO ELITE BOILER MAIN PCB 5131265 7679744 (NEXT DAY)
New (other) · Baxi
£40.99
(£40.99/Unit)
Free postage
Est. delivery Thu, Aug 7
65 sold
Main 5110963 Multipoint BF Diaphragm
Brand new · Main
(12)
£34.99
Free postage
60 sold
MAIN MULTIPOINT BF WATER VALVE 5110959 - Brand New April Stock 2025
Brand new · Main
£169.16
Free postage
34 sold
MAIN COMBI 30HE & SYSTEM 18HE 24HE 28HE PRINTED CIRCUIT BOARD PCB 5112380
New (other) · Main
£52.00
Free postage
Est. delivery Wed, Aug 6
33 sold
Energy Rating A++

Main Water Boilers

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2,871 results

MAIN ECO COMPACT SYSTEM 15 18 & COMBI 25 30 BOILER PCB 7688421

MAIN COMBI 30 ECO & 30 ECO ELITE BOILER MAIN PCB 5131265

MAIN COMBI 30 ECO & 30 ECO ELITE BOILER MAIN PCB 5131265

MAIN COMBI 24 24 30 HE 24HE 30HE DIVERTER VALVE 248061 7224344

Main Combi 25 30 Eco Elite 3 Way Diverter Valve Cartridge Valve Motor - 248733

Main Combi 24SE 24HE 30HE DHW Diaphragm, Repair Kit 5111137

MAIN COMBI 25 & 30 ECO ELITE TEMPERATURE SENSOR THERMISTER 5114725

Main Combi 24, 24HE, Performa 24 ECO HE PCB 5112657

Main Combi 25, 30 Eco & Elite Domestic Hot Water Heat Exchanger 248048 7225723

MAIN COMBI ERP ECO ELITE 24 28 COMBI ERP BOILER BURNER PLATE GASKET 5130582

Main Combi 24, 24HE, Performa 24 ECO HE PCB 5112657 See List Below

MAINS MEDWAY SUPER BOILER WATER VALVE 10/18907 COME WITH 1 YEAR WARRANTY

MAIN COMBI 24SE 24HE 30HE THERMISTER TEMPERATURE SENSOR 5108265 WAS 247394 NEW

MAIN MULTI POINT FF WATER HEATER PCB 5111408

MAIN HEATING ONLY 9HE 12 15 18 20 & 24 BOILER FAN 5112320 1 YEAR WARRANTY

Main Combi 24 24HE, 30HE Diverter Valve Repair Kit 248061RK 248061 248062**NEW**

MAIN COMBI 25ECO ELITE & 30ECO ELITE BOILER AUTO AIR VENT 5130570

Main Combi 24 24HE 30HE Complete Full Diverter Valve Repair Kit 248061 RK 248062

Main Combi 24 & 24HE DHW Plate Heat Exchanger Part No: 248046 ALFA LAVAL NEW

MAIN COMBI 24 HE 30 HE BOILER OVER HEAT LIMIT THERMOSTAT 248079

MAIN MULTIPOINT BF WATER VALVE PART 5110959

MAIN COMBI 25 & 30 ECO & ECO ELITE 01.76.5094.1 MECHANICAL CLOCK TIMER 247206

MAIN MULTIPOINT BF & BF ERP WATER HEATER THERMOCOUPLE TWIN CABLE 5110886

Main Multipoint BF Water Heater Thermocouple 5110886 Inc. VAT Next Day Option

MAIN COMBI 30 ECO Boiler RRP 1499

MAIN COMBI 30HE & SYSTEM 18HE 24HE 28HE BOILER PCB 5112380

MAIN COMBI 30 HE BOILER FAN ASSEMBLY 5112430

Main Medway Super Thames Diaphragm 10/17467 See List Below

Main Multipoint Water Heater

MAIN COMBI 24HE 30HE 25 ECO & 25 ELITE BOILER BOILER PUMP 248042

Main Combi 25 30 Eco Elite Diverter Valve 7224764 was 5132456

Main Combi 25,30 Eco Ignition Electrode Kit MPN 5130293

Main Multipoint BF Water Heater Thermocouple 5110886 Inc. VAT Next Day Option

MAIN COMBI 24 24 HE 30 HE DHW HYDRAULIC VENTURI 248051 248050

MAIN 25 & 30 ECO COMBI 3 WAY DIVERTER VALVE ASSEMBLY 5118381 7224763

MAIN COMBI 25 ECO & 25 ECO ELITE ERP PRINTED CIRCUIT BOARD PCB 7679746, 5131264

Main 5110843 OUTER CASE ONLY Multipoint BF Water Heater - (THIS IS NOT A BOILER)

MAIN COMBI 25 30 ECO & 25 30 ECO ELITE BOILER BURNER PLATE GASKET 5130582

Combi Eco Elite 30kW Gas Boiler (Main)

MAIN COMBI 24HE 30HE 25 ECO & 25 ELITE BOILER PUMP 248042

Genuine Grant AAV - MPCBS29 All Boilers

Main Combi 25 30 Eco Elite 3 Way Diverter Valve Cartridge Kit 720003100

MAIN COMBI 25 ECO & 30 ECO MAGNETIC FLOW SWITCH SUITABLE 5114710

MAIN COMBI 25 30 ECO & 25 30 ECO ELITE BOILER FAN 5121447

MAIN COMBI 30 HE DIVERTER VALVE 248061- 7224344

MAIN ECO COMPACT SYSTEM 15 18 & COMBI 25 30 BOILER PCB 7688421

Main Combi Eco 25 & 30 Diverter MOTOR & CARTRIDGE 720003100 & 248733 7224764

Main Boiler Pump Head (15-60) UPM4 7713520

MAIN COMBI 24 30 HE DIVERTER VALVE 248061- 7224344

MAIN COMBI 25 30 ECO & 25 30 ECO ELITE BOILER FLOW SENSOR 5114767

Main Combi 30 HE DHW Heat Exchanger 16 Plates 248048 7225723

MAIN COMBI 30 ECO & ECO ELITE BOILER MAIN PCB 5131265

Main Eco compact Combi Boiler Pressure Relief Valve (PRV) 7683976 New

Main Combi 25 30 Eco Elite Diverter Valve 5132456 Brand New

MAIN COMBI ECO ELITE 25 COMBI ERP BOILER MAIN PRINTED CIRCUIT BOARD PCB 5131264

MAIN COMBI 25ECO ELITE & 30ECO ELITE TEMPERATURE SENSOR THERMISTER 5114725

MAIN COMBI 30 ECO & 30 ECO ELITE BOILER MAIN PCB 5131265 7679744 (NEXT DAY)

Main 5110963 Multipoint BF Diaphragm

MAIN MULTIPOINT BF WATER VALVE 5110959 - Brand New April Stock 2025

MAIN COMBI 30HE & SYSTEM 18HE 24HE 28HE PRINTED CIRCUIT BOARD PCB 5112380

Best selling

Main Eco Elite Combi ERP 25 Boiler Ignition & Ionisation Electrode 5130293

Geninue Main Combi 30 He 16 Plate DHW Heat Exchanger - 7225723

Main Boiler Service Kit – 5130604 5130588 5130582 5130293

Main Multipoint BF Thermocouple 5110886 Post

Main Eco Compact 25 30 Cobmi Boiler Pump Head (15-60) UPM4 7684006

Main Combi 24 24he & 30he NTC Temperature Sensor Thermister 5108265 247394

Main 5110963 Multipoint BF Diaphragm

MAIN COMBI 25 30 ECO & 25 30 ECO ELITE BOILER FAN 5121447

Top-rated

Main Eco Elite Combi ERP 25 Boiler Ignition & Ionisation Electrode 5130293

Main 5110963 Multipoint BF Diaphragm

Main Medway Super Thames Diaphragm 10/17467 See List Below

Main Multipoint BF Thermocouple 5110886 Post

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Main Combi 24 24HE, 30HE Diverter Valve Repair Kit 248061RK 248061 248062NEW