Thu 27th Mar 2014

Ferroli Optimax 25 OV

Ferroli Optimax 25 OV


The Ferroli Optimax 25OV is a regular boiler which, says the 50-year manufacturer of heating systems, gives the user high savings on gas bills. Not only that, it also boasts lower emissions and is a deserving member of the A SEDBUK band. Ferroli also claim it’s as quiet as a church mouse when working and, cleverly, is self diagnostic, which means it should tell you what’s wrong with it on a bad day. Like most Ferroli boilers, access to the components is straightforward.

Price Range £630 – £730

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  • Big savings on gas
  • A SEDBUK rated
  • Frost protection
  • Advanced burner design
  • Easy access to components
  • Very quiet. • Premix fan assembly
  • Auto output selection
  • Optional five year guarantee on burner


  • Optional time clock


Type: Regular
Boiler Output: 25 kW
Hot Water Flow Rate (L/min): n/a
Clock/Timer: LCD
Sedbuk Energy Efficiency Category: A
Size (cm): 58 x 40 x 31
LPG Convertible: Yes

BUYability Favourite Features

The emphasis on gas bill savings will go down with buyers of this boiler and it has the gizmos to deliver, including auto output selection and advanced burner design. Shame about the time clock being an optional extra though.

BUYability Ratings  

Ease of Use:

Overall BUYability Rating  

A fine mid range regular boiler that’s up for the job in hand. Kitted out with advanced Ferroli components, this might just save a few bob off the gas bill.

Boiler Output Choices

Choose a model to suit your property

Model Output (CH) Typically Suitable for
Optimax HE 18 OV
18kW Flat
Optimax HE 25 OV
24.6kW Larger Flat/Small House


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