If space is at a premium in your home, the cupboard-size ecoFIT pure system boiler is the choice for you. It's designed to be flexible, with a rear flue option available to give you more choice where you put it. But being lightweight and compact, doesn't mean you have to compromise on comfort. The ecoFIT pure's powerful aluminum heat exchanger which offers outstanding performance and low energy consumption for any home. It's smart, too. When you don't need as much heat, it will reduce itself to just 20% of its maximum output - meaning greater energy efficiency and lower bills for you. And because it works with vSMART, you can control your low-cost, climate-friendly heating via the internet.