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ISOTWIN CONDENS F35E Reviews (Combi Condensing)

Our rating: 4/5thumbthumbthumbthumbthumb
Efficiency rating: 92.0%*A Rating
Average householder rating: Not yet rated. Use the “comments & reviews” section below to be the first!
Average installer rating: Not yet rated. Use the “comments & reviews” section below to be the first!

Saunier Duval ISOTWIN CONDENS F35E

The Saunier Duval ISOTWIN CONDENS F35E combi boiler has an excellent reputation for being a highly-recommended energy-saving product. Established in 1907, Saunier Duval is one of the first comapnies to launch combination boilers in the United Kingdom.

The Saunier Duval ISOTWIN CONDENS F35E is a high efficiency product which has been manufactured and designed using the newest advancements in heating technology. The team at Saunier Duval invests heavily in research and development with the aim of designing safe, efficient and reliable combi boilers. The Saunier Duval ISOTWIN CONDENS F35E combi boiler is has been designed with such efficiency that it safeguards our environment as well as helps keep energy bills down for homeowners. The Saunier Duval ISOTWIN CONDENS F35E combi boiler, together with other Saunier Duval products, are recommended by the Energy Saving Trust. Saunier Duval is also a member of the heating and hotwater information council or HHCI.


Here are some advantages of the Saunier Duval ISOTWIN CONDENS F35E:


  • High-efficiency condensing storage combination boiler with a SEDBUK A rating
  • ISODYN Shift Load storage system which delivers up to 200 litres of DHW
  • Supplied with a second direct hot water response rate
  • Telescopic Flue and Plume Diverter kit compatible
  • Stainless Steel heat exchanger
  • Frost Protected
  • Zero compartment ventilation
  • Flexible flue options
  • Extensive fault codes
  • Daily Pump spin

    • The technical specification of the Saunier Duval ISOTWIN CONDENS F35E are:


  • Height 890mm
  • Width 700mm
  • Depth 480mm
  • Net weight 75kg
  • Heating output max (kW) 30.6 kW
  • Maximum system capacity (75°C) (l) 240 liters
  • Max supply pressure (bar) 0.5 bar
  • Maximum usage capacity (kW) 33.2 kW
  • Threshold flow rate (l/min) 14 l/min
  • Internal diameter of the horizontal suction cup 100
  • External diameter of the horizontal suction cup 10

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    * When review applies to a range of boilers, efficiency applies to best model in range. Always check with manufacturer.