Ariston • Conventional • Gas Fuel
The Ariston Microsystem 21 RFFI has a 80.4% efficiency rating.
The Ariston Microsystem 21 RFFI is a Conventional boiler with a maximum power output of 21.0 - 21.0 (KW) that uses Gas as its fuel source.
This boiler will provide efficient heating and subsequently reduce fuel bills and carbon dioxide emissions. Potential annual savings compared to older boilers: £100-£250.
Why the Ariston Microsystem 21 RFFI is an excellent choice for your home
80.4% efficiency rating for maximum energy savings
Reduce your energy bills by up to £100-£250 annually
Ariston quality with comprehensive warranty
Built to last with modern condensing technology
Discover other efficient boilers you might be interested in
Check if you're eligible for a free Ariston Microsystem 21 RFFI boiler through the ECO4 scheme and start saving money on your energy bills.
