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ecoTEC exclusive Green iQ 27kW

ecoTEC exclusive system boiler

  • Wide modulation range of up to 1:10
  • 85% recyclable at the end of its life
  • Compatible with Vaillant’s vSMART™ heating control
  • 5-year guarantee as standard, with 7 years available when you book a Vaillant Advance installer or 10 years when fitted with a Boiler Protection Kit by a Vaillant Advance installer*


*10 year guarantee only available on boilers with an output of up to 45kWs

The new ecoTEC exclusive Green iQ is our first ever boiler product with the power of Green iQ technology.

Combining our complete range of smart technologies and features, you can be sure you’re receiving the very best when you have a new ecoTEC exclusive installed. As well as providing great performance, the new ecoTEC exclusive intelligently manages consumption and output to keep all its components running at peak performance, for longer, providing a low maintenance solution that you can rely on.

The ecoTEC exclusive range consists of two large output combination boilers with extra condensate technology, and a single system boiler, which includes an integrated diverter valve for the first time in UK Vaillant history.

Features and benefits:

  • Wide modulation range of up to 1:10 - Adapts perfectly to every situation, therefore your ecoTEC exclusive boiler will not use any more energy than it needs to - ensuring fuel bills are kept to a minimum
  • Extra condensate heat exchanger - Taking overall combi boiler efficiency to the next level, offering the highest efficiency levels to reduce energy bills
  • Green iQ Mode - Outstanding eco-credentials from Vaillant’s latest boiler range, which optimises running cycles, results in even lower gas consumption and the boiler is highly recyclable (85%) at the end of its life
  • Compatible with Vaillant’s vSMART™ heating control - When a vSMART control is added the ecoTEC exclusive will achieve an A+ ErP rating, making it welcome in any switched on, energy-conscious home
  • Standard 2 year warranty, can be upgraded to a 7 year warranty when registered by on Vaillant Advance
  • Option to purchase extended warranty up to 10 years when registered by an Advance installer



Technical dataUnit of measureecoTEC exclusive 627
Boiler type system
Signature model output 27kW
Article number 0010017063
Gas Council number 41-694-02
Boiler dimensions (HxWxD)mm720 x 440 x 338
Nominal heat output range at 50/30˚C (Condensing mode)kW4.2 - 26.7
Nominal heat output range at 80/60˚C (Non condensing mode)kW3.7 - 24.7
Maximum flow temperature˚C80
Flow temperature range˚C30 - 80
Flow temperature factory setting˚C75
Approximate condensate volume at 50/30˚Clitres/hr2.52
Modulation (max/min)1 : X1:8.1
Domestic Hot Water
Maximum heat output for water generationkW30
Lowest water pressure to operate boilerbar-
Lowest water flow for operationl/min-
Lowest water pressure for maximum flow ratebar0.8
Domestic hot water flow rate (at DT = Δ35K) * l/min-
Hot water output temperature range˚C-
Expansion vessel sizelitres10
Gas inlet connection (pipe size)mm15
Heating flow and return connections (pipe size)mm22
Hot and cold water connections (pipe size)mm-
Heat exchanger materialStainless/AluminimumStainless Steel
Boiler lift weight (Dry boiler)kg37.5
NOx class 5
NOx (En 15502-2-1)mg/kWh30
ErP efficiency%94
ErP decibel rating (sound power)dBa43
Fluing options
Maximum horizontal flue length 60/100m5.5
Maximum vertical flue length 60/100m8
Maximum horizontal flue length 80/125m32
Maximum vertical flue lengthm34

*flow restrictor fitted to achieve a Δ42K rise

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