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ecoTEC plus 46 and 65kW (Discontinued)

Light commercial boilers

  • Suitable for domestic and commercial projects
  • High quality stainless steel heat exchanger offers more resistance to oxidation and corrosion
  • All major components built-in for easy installation
  • ErP A rated


Attention: This product is now discontinued, so if you are looking for a new product, please refer to ecoTEC plus 48 and 64kW.

With a whole host of built-in features, the installation and servicing of the ecoTEC 46kW & 65kW boilers could not be more straightforward. Lightweight for its class with a compact design and a comprehensive range of flues, fittings and accessories, the ecoTEC boiler can be sited almost anywhere.

Suitable for both domestic and commercial buildings, in addition to properties with more complex layouts. The ecoTEC 46 and 65kW boilers can be installed in cascade to provide a flexible and extremely efficient heating system. The ecoTEC 46 and 65kW boilers utilise modulation of the gas valve to automatically optimise heat and hot water supply according to the demands on the system.

ecoTEC 46kW is suitable for both natural gas and LPG applications. LPG conversion kits are available from Vaillant.

Please note ecoTEC 65kW is only compatible with natural gas.

Features and benefits

  • High quality stainless steel heat exchanger - Offers more resistance to oxidation and corrosion
  • Pump included and integrated connection for expansion vessel - Easy installation
  • Built-in two-stage frost protection - Ensure optimal performance all year round
  • Fully modulating low NOx burner – Lower NOx emissions are achieved
  • Easy access to all components from the front, along with a single electronic circuit board and flue gas analysis point – Repairs and servicing are easier than ever
  • All models are equipped with an air separator with auto air vent and filter – To remove fine particles
  • A full range of intelligent eBUS controls, including weather compensation and multiple boiler management control systems – To ensure your system is reliable and easy to run, whatever your requirements
  • Push-fit flue system – Simple to install
  • LPG conversion kit available – Flexibility where mains gas is unavailable



Technical DataUnitecoTEC 46kWecoTEC 65kW
Article number  00100178190010017820
Heat output range 80/60°C natural gas G20 at 20mbkW12.3 - 44.1NG 13.8 - 63.7
Heat output range 50/30°C natural gas G20 at 20mbkW12.9 - 46.4NG 14.6 - 67.6
Conversion to LPG G31 80/60°C at 37mb (46kW only)kW12.5 - 45.0N/A
Conversion to LPG G31 50/30°C at 37mb (46kW only)kW12.5 - 46.4N/A
Maximum heat input (net)kW4665
Minimum flow temperature °C3535
Maximum flow temperature°C8585
Nominal CH flow rate Δt = 20 K l/hr1940 2750
ErP rating  AA
Seasonal efficiency* - NG%95.895.5
Dimensions (H x W x D) mm800 x 480 x 450800 x 480 x 472
Dry weight (includes pump) kg4675

*in accordance with the non-domestic building services compliance guide 2013

For further details on the specifications of this products, please download the Technical Specification table/s below:

46kW (722 kB)

65kW (824 kB)

Related Products

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VRC 700 and VRC 700f

  • Takes care of all Vaillant equipment automatically by intelligently communicating with all Vaillant appliances
  • Flexible time programs
  • Clear, high contrast backlit display
  • Programs are permanantly stored


Alternative products

Alternative products

ecoTEC plus 80, 100 and 120kW

  • High quality stainless steel heat exchanger offers more resistance to oxidation, seizing and corrosion
  • Energy saving two-stage frost protection system and pressure sensor to monitor system pressure via diagnostics
  • Full range of accessories available for a complete system solution
  • ErP 'A' rated