10 Best Vaillant Ecotec Plus 840 40kw Combi Boiler in the UK 2025
Updated on 17/07/2025
#1
Recommended
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- Compact, cupboard fit solution
- Top and rear flue options
- Automotive Grade aluminium heat exchanger
- Clear LED display
- Easy installation and maintenance
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- Compact, cupboard fit solution
- Top and rear flue options
- Automotive Grade aluminium heat exchanger
- Clear LED display
- Easy installation and maintenance
#2
Value for Money
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- Replaces Vaillant Part No. 0020135165
- Authentic replacement component
- Available for next day delivery at no extra cost
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- Replaces Vaillant Part No. 0020135165
- Authentic replacement component
- Available for next day delivery at no extra cost
#3
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- Compatible with Vaillant ECOTEC PLUS models 612, 615, 618, 624, 630, 637, 831, 832, 824, 837, and 937
- Replacement PCB part number 0020132764
- Designed to enhance the performance of your heating system
- Ensures reliable operation of your heating system
- Easy installation for seamless integration
- A crucial component for maintaining efficiency in Vaillant heating units
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- Compatible with Vaillant ECOTEC PLUS models 612, 615, 618, 624, 630, 637, 831, 832, 824, 837, and 937
- Replacement PCB part number 0020132764
- Designed to enhance the performance of your heating system
- Ensures reliable operation of your heating system
- Easy installation for seamless integration
- A crucial component for maintaining efficiency in Vaillant heating units
#4
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- Compatible with Vaillant ECOTEC PLUS models 612, 615, 618, 624, and 630 from 2012.
- Replacement fan part number is 0020135138.
- Designed to efficiently support the operation of gas boilers.
- Developed for reliability and durability under normal use conditions.
- Facilitates proper airflow necessary for boiler function.
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- Compatible with Vaillant ECOTEC PLUS models 612, 615, 618, 624, and 630 from 2012.
- Replacement fan part number is 0020135138.
- Designed to efficiently support the operation of gas boilers.
- Developed for reliability and durability under normal use conditions.
- Facilitates proper airflow necessary for boiler function.
#5
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- Mechanical boiler programmer for central heating
- Directly mounts to boiler fascia for simple installation
- Operates on a 24-hour schedule
- Compatible with all Vaillant combi boilers and VRT 50 digital room thermostat
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- Mechanical boiler programmer for central heating
- Directly mounts to boiler fascia for simple installation
- Operates on a 24-hour schedule
- Compatible with all Vaillant combi boilers and VRT 50 digital room thermostat
#6
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- Compatible with Vaillant ECOTEC Plus, ECOTEC Exclusive, ECOTEC VUW, and ECOMAX VU models (part number 181051).
- 10L capacity for effective pressure management and system operation.
- Absorbs water expansion to prevent boiler damage from high pressure fluctuations.
- Constructed from high-quality materials for durability under high-pressure conditions.
- Quick and easy installation to minimize downtime.
- 12-month warranty included for reliable performance.
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- Compatible with Vaillant ECOTEC Plus, ECOTEC Exclusive, ECOTEC VUW, and ECOMAX VU models (part number 181051).
- 10L capacity for effective pressure management and system operation.
- Absorbs water expansion to prevent boiler damage from high pressure fluctuations.
- Constructed from high-quality materials for durability under high-pressure conditions.
- Quick and easy installation to minimize downtime.
- 12-month warranty included for reliable performance.
#7
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- COMPATIBILITY : Vaillant ecoTEC PLUS 824 Vaillant ecoTEC PLUS 824 Vaillant ecoTEC PLUS 831 Vaillant ecoTEC PLUS 831 Vaillant ecoTEC PLUS 837 Vaillant ecoTEC PLUS 937 Vaillant VUI 376/3-5 (2006-2010) Vaillant VUW 246/3-5 (2005-2005) Vaillant VUW 246/3-5 R1 (2005-2010) Vaillant VUW 316/3-5 (2005-2005)
- COMPATIBILITY : Vaillant VUW 316/3-5 R1 (2005-2010) Vaillant VUW 376/3-5 R1 (2006-2010) Vaillant VUW 246/5-5 (2012-CURR) Vaillant VUW 316/5-5 (2012-CURR) Vaillant VUW 376/5-5 (2012-CURR) Vaillant ecoTEC PLUS 824 Vaillant ecoTEC PLUS 831 Vaillant ecoTEC PLUS 837
- COMPATIBILITY : Vaillant VUW 246/5-5 R1 (2012-CURR) Vaillant VUW 316/5-5 R1 (2012-CURR) Vaillant VUW 376/5-5 R1 (2012-CURR) Vaillant ecoTEC PLUS 824 R1 Vaillant ecoTEC PLUS 831 R1 Vaillant ecoTEC PLUS 837 R1
- COMPATIBILITY : Vaillant VUI 376/5-5 (2012-CURR) Vaillant ecoTEC PLUS 937 Vaillant VIH CL 15 S (2012-CURR) Vaillant ACTOSTORE 15 (2012-CURR) Vaillant VUI 376/5-5 R1 (2012-CURR) Vaillant ecoTEC PLUS 937 R1 Vaillant VIH CL 15 S R1 (2012-CURR) Vaillant ACTOSTORE 15 R1 (2012-CURR)
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- COMPATIBILITY : Vaillant ecoTEC PLUS 824 Vaillant ecoTEC PLUS 824 Vaillant ecoTEC PLUS 831 Vaillant ecoTEC PLUS 831 Vaillant ecoTEC PLUS 837 Vaillant ecoTEC PLUS 937 Vaillant VUI 376/3-5 (2006-2010) Vaillant VUW 246/3-5 (2005-2005) Vaillant VUW 246/3-5 R1 (2005-2010) Vaillant VUW 316/3-5 (2005-2005)
- COMPATIBILITY : Vaillant VUW 316/3-5 R1 (2005-2010) Vaillant VUW 376/3-5 R1 (2006-2010) Vaillant VUW 246/5-5 (2012-CURR) Vaillant VUW 316/5-5 (2012-CURR) Vaillant VUW 376/5-5 (2012-CURR) Vaillant ecoTEC PLUS 824 Vaillant ecoTEC PLUS 831 Vaillant ecoTEC PLUS 837
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#8
11% Off
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- Designed for a precise fit in the Vaillant Ecotec Plus range, ensuring seamless replacement of control knobs.
- Constructed from high-quality materials for durability and resistance to wear.
- User-friendly design facilitates quick and straightforward installation, minimizing downtime.
- Enables smooth and accurate temperature adjustments, optimizing heating system performance.
- Restores functionality to the boiler’s control panel for efficient operation.
- Includes a 12-month warranty for assurance of quality and reliability.
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- Designed for a precise fit in the Vaillant Ecotec Plus range, ensuring seamless replacement of control knobs.
- Constructed from high-quality materials for durability and resistance to wear.
- User-friendly design facilitates quick and straightforward installation, minimizing downtime.
- Enables smooth and accurate temperature adjustments, optimizing heating system performance.
- Restores functionality to the boiler’s control panel for efficient operation.
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#9
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- Compatible with ECOTEC PLUS models: 824 VUW 246/3-5 (2005-2012), 831 VUW 316/3-5 (2005-2013), and various R1 and R3 versions.
- Supports ECOTEC PRO models: 28 VUW 286/5-3 R4, 30 VUW 306/5-3 R4, and 24 VUW 246/5-3 R4 in current production.
- Fits ECOTEC PLUS models: 832 VUW 326/5-5 R4, 838 VUW 386/5-5 R4, and 835 VUW 356/5-5 R4, as well as LPG versions of ECOTEC PRO 28 (R1 and R4).
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- Compatible with ECOTEC PLUS models: 824 VUW 246/3-5 (2005-2012), 831 VUW 316/3-5 (2005-2013), and various R1 and R3 versions.
- Supports ECOTEC PRO models: 28 VUW 286/5-3 R4, 30 VUW 306/5-3 R4, and 24 VUW 246/5-3 R4 in current production.
- Fits ECOTEC PLUS models: 832 VUW 326/5-5 R4, 838 VUW 386/5-5 R4, and 835 VUW 356/5-5 R4, as well as LPG versions of ECOTEC PRO 28 (R1 and R4).
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