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 money 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.