The ecoTEC plus range of open vent boilers is extremely reliable, with the quality of components and manufacturing that Vaillant is known for.

• Thanks to continuous modulation and real combustion control by a multi-sensor system, they achieve high efficiency with the lowest emissions.
• These boilers have an aluminium heat exchanger with wide waterways: an ideal choice for larger properties.
• Each boiler is ultra-quiet, a feature recognised by the Noise Abatement Society, which has awarded many of the ecoTEC plus range with the Quiet Mark accreditation for its innovative design, specifically created to ensure a peaceful home.

10-year guarantee available

• Free 5-year guarantee out of the box as standard. Extended guarantee available when installed with a Boiler Protection Kit and registered on Advance.

Boiler Plus compliant with Vaillant controls

• Install with the VRT 15, timeSWITCH 160 and VR 66 wiring centre for the easiest way to meet Boiler Plus.

High specification aluminium heat exchanger

• Designed for longer life, easier maintenance, and lower energy bills.

Easy installation and maintenance

• Accessible layout allows all components to be replaced from the boiler front, with removable side panels for even more access.

Flue options (sold separately)

• 60/100 push fit flue system with full range of accessories
• 80/125 flue system option for even longer lengths and installation flexibility.

Electronic gas and air modulation system

• For precise self-setting gas combustion to improve performance and lower emissions.

Compatible with Vaillant’s heat pump range

• Can be fitted with an aroTHERM heat pump to create a hybrid system.

 

	ecoTEC plus 412	ecoTEC plus 415	ecoTEC plus 418	ecoTEC plus 424	ecoTEC plus 430	ecoTEC plus 435
Boiler output	12 kW	15 kW	18 kW	24 kW	30 kW	35 kW
Boiler Ref	0010021220	0010021221	0010021222	0010021223	0010021224	0010015674
Boiler dimensions  (H x W x D)	602 x 375 x 320  mm	602 x 375 x 320  mm	602 x 375 x 320  mm	602 x 375 x 320  mm	602 x 375 x 320  mm	602 x 375 x 320  mm
NOx (En 15502-2-1)	32 mg/kWh	33 mg/kWh	39 mg/kWh	39 mg/kWh	40 mg/kWh	29 mg/kWh
ErP efficiency (heating / DHW)	A	A	A	A	A	A
ErP efficiency	94 %	94 %	94 %	94 %	94 %	93 %
ErP decibel rating (sound power)	45 dB(A)	48 dB(A)	51 dB(A)	52 dB(A)	55 dB(A)	53 dB(A)
Nominal heat output range at 50/30˚C (condensing mode)	4.7 - 12.8  kW	4.7 - 15.9  kW	5.2 - 19.1   kW	6.3 - 25.7   kW	7.5 - 31.8 kW	7.5 - 37.1 kW
Nominal heat output range at 80/60˚C (non condensing mode)	4.5 - 12.3 kW	4.5 - 15.2   kW	5.0 - 18.3 kW	6.1 - 24.6  kW	7.2 - 30.5 kW	7.1 - 35.1 kW
Flow temperature range	10 - 80 ˚C	10 - 80 ˚C	10 - 80 ˚C	10 - 80 ˚C	10 - 80 ˚C	10 - 80 ˚C
Heat exchanger material	Aluminium	Aluminium	Aluminium	Aluminium	Aluminium	Aluminium
Gas inlet connection (pipe size)	15 mm	15 mm	15 mm	15 mm	15 mm	15 mm
Heating flow and return connections (pipe size)	22 mm	22 mm	22 mm	22 mm	22 mm	22 mm