VAILLANT ECOTEC PLUS 826 COMBI BOILER 26kw 0010036015
The Vaillant ecoTEC Plus 826 is a premium 26kW combi boiler designed for medium to large UK homes.
- The combination range features 26, 32, 36 and 40kW output models. As one of Vaillant's flagship models, this A-rated condensing gas combi boiler delivers reliable central heating and instant hot water with outstanding energy efficiency — helping to reduce your fuel bills year-round.
Manufacturer's Extended 10-year guarantee available when registered on Advance with a Boiler Protection Kit.
Product Information
Why Choose the Vaillant ecoTEC Plus ?
Launched in July 2023, the updated ecoTEC Plus range features cutting-edge technology and a refined design, making it one of the best combi boilers available in the UK today.
The Vaillant ecoTEC Plus combi boiler is a top choice for homeowners and heating engineers across the UK. Its combination of high efficiency, smart connectivity, and whisper-quiet operation makes it a market-leading solution for combi boiler replacement or new installations. Available for supply only at a competitive trade price from Plumbie — your trusted UK plumbing and heating supplier.
Key Features
- ErP A-rated energy efficiency — maximises performance while minimising running costs
- Intelligent gas combustion technology for optimised efficiency
- Adjusts output to match heating demand, reducing fuel usage
- Smart home compatible — works with the myVAILLANT app (iOS & Android) for remote heating control
- Rapid hot water delivery
- Quiet Mark certified — ultra-quiet operation for a peaceful home environment
- Compact, installer-friendly design — easy access to all major components for straightforward installation and servicing
- The Vaillant ecoTEC plus combination boiler range has been refined and taken to the next level. Paired with our plug-and-play internet gateway, myVAILLANT connect, it enables app control, smart home integration and remote appliance care and support in minutes, for increased efficiency and first-class customer service.
- The combination range features 26, 32, 36 and 40kW output models. Beneath its familiar curved case, the internal layout of the ecoTEC plus has been finely tuned to ensure all components are easily accessible, making maintenance and servicing straightforward, and installation effortless.
- The semi-touch interface ensures easy, intuitive operation, while enhanced connectivity opens up more possibilities for remote diagnostics, performance monitoring and control.
- DETECT technology Intelligent gas combustion monitoring, helping the ecoTEC plus reach a wider modulation range of up to 1:11, for even greater system efficiency.
- Sharpened intelligence with LIN bus technology. Enables more intelligent and accurate reading of flow rate and pressure differential via internal pump for improved performance.
- Extended 10-year guarantee available when registered on Advance with a Boiler Protection Kit.
- Smart home ready when used with myVAILLANT connect The myVAILLANT connect internet gateway accessory works seamlessly with this range of ecoTEC plus boilers enabling easy connection to Vaillant controls with app connectivity and smart speaker integration in minutes(Compatible with the senso controls range and the VRC 700. Only for use with single heating zones).
- Familiar footprint and external layout Retaining the same case dimensions, boiler footprint, flue position and pipe connections for an effortless like-for-like swap.
- Intuitive semi-touch interface (not compatible with the timeSWITCH 150 and timeSWITCH 160) Allowing for effortless first-time installation and set-up, with guided commissioning and set up wizard and easy to follow navigation
- Automatic LPG conversion on most outputs. Completed in minutes using the intuitive interface, with no additional parts required (Excluding ecoTEC plus 840 and 940).
Product Dimensions
ecoTEC plus 826
ecoTEC plus 832
ecoTEC plus 836
ecoTEC plus 840
Maximum heat output for water generation
26.5 kW
32.6 kW
36.7 kW
40.8 kW
Boiler Ref
0010036015
0010036016
0010036017
0010036018
Boiler dimensions
(H x W x D)
720 x 440 x 352 mm
720 x 440 x 352 mm
720 x 440 x 352 mm
720 x 440 x 386 mm
LPG compatible
Yes
Yes
Yes
No
NOx ErP label
33.0 mg/kWh
27 mg/kWh
28.0 mg/kWh
26.0 mg/kWh
ErP efficiency (heating / DHW)
A / A
A / A
A / A
A / A
ErP efficiency
93 %
94 %
94 %
94 %
ErP decibel rating (sound power)
46 dB(A)
45 dB(A)
47 dB(A)
49 dB(A)
Nominal heat output range at 50/30˚C (condensing mode)
2.8 - 21.2 kW
3.9 - 26.5 kW
4.2 - 32.2 kW
5.0 - 32.3 kW
Nominal heat output range at 80/60˚C (non condensing mode)
2.5 - 19.8 kW
3.5 - 24.9 kW
3.7 - 29.9 kW
4.5 - 29.8 kW
Flow temperature range (factory setting - 75°C)
30 - 85 ˚C
30 - 85 ˚C
30 - 85 ˚C
30 - 85 ˚C
Lowest water pressure to operate boiler
0.7 bar
0.7 bar
0.7 bar
0.7 bar
Domestic hot water flow rate (at ∆t = 35K)
10.6 l/min
13.0 l/min
14.6 l/min
16.3 l/min
Hot water output temperature range
35 - 65 ˚C
35 - 65 ˚C
35 - 65 ˚C
35 - 65 ˚C
Heat exchanger material
Stainless steel
Stainless steel
Stainless steel
Stainless steel
Gas inlet connection (pipe size)
15 mm
15 mm
15 mm
22 mm
Heating flow and return connections (pipe size)
22 mm
22 mm
22 mm
22 mm
Hot and cold water connections (pipe size)
15 mm
15 mm
15 mm
15 mm
