Vokèra Unica i combi boiler

The Unica i is a high specification condensing combi boiler range. Advanced energy saving credentials define this product range, which boasts a class leading modulation ratio of 10:1, enabling the boiler to reduce its output in line with the demand in your home, reducing wasted energy.

Its advanced technology also allows the Unica i to connect to the Vokera OpenTherm control; not only giving you complete control over your heating and hot water requirements, but can save up to £67 a year on your fuel bills. As well as its advanced energy saving credentials, the Unica i provides exceptional hot water comfort.


  • ErP Class A
  • 7 year parts & labour warranty
  • Combi boiler for instantaneous heating and hot water
  • Simple to operate
  • No need for storage cylinders or tanks

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10:1 modulation explained:

The Unica i range boasts an enviable modulation ratio of 10:1, this high ratio enables the boiler output to be reduced to as little as 10%.  For example the 28kW Unica i can reduce its output to just 2.8kW, so when the home only requires 3kW, the boiler will modulate itself down to 3kW.  Boilers with an inferior ratio, for example 4:1 would only reduce to 7kW, resulting in wasteful on/off cycling and reduced efficiency. A high modulation ratio can significantly reduce wasteful on/off cycles, which in turn, will increase component longevity and helps to ensure stable domestic hot water temperatures.

In simple terms; 10:1 modulation = better fuel efficiency, increased component longevity, optimal comfort.