Heat Interface Units

Introducing Calefa – the new standard in Heat Interface Units

Supplied, commissioned and maintained by Warmafloor, the Calefa family of Heat Interface Units optimises hot water delivery in terms of responsiveness, efficiency and ease of installation.

Project proven in Europe and developed in Denmark with the manufacturing expertise of our parent company Wavin, Calefa is setting new standards for HIUs with a choice of indirect or direct models.

Market leading efficiency

Calefa’s unique 4-option (Open/Closed/Schedule/Auto) bypass control can ensure optimum efficiency and gives the user maximum functionality.

With the bypass set to Auto via the intelligent Electronic Control Unit, the ECU automatically recognises the current usage pattern in the home, and after just 2 weeks will have learnt the consumption demands and will respond accordingly. The result is optimum efficiency – making Calefa a market leader through annual volume weighted average return temperature (VWART).

BESA test

The BESA test is the UK standard for HIUs. With Calefa’s unique bypass control in Auto setting, performance of the unit can be optimised by the intelligent control of the ECU to provide market leading VWART calculations.

  • Minimum saving of 200-400kWh per year
  • DHW to target temperature in 42 seconds in both high and low temperature tests
  • DHW to 45°C in just 11 seconds in both high and low temperature tests
BESA test Results chevron

Sentio App control

Linking Calefa to Sentio’s smart and simple control enables valuable synergies for the user:

  • Control domestic hot water temperature through the Sentio App
  • Receive pressure loss notifications via the App
  • Domestic hot water priority for optimum underfloor heating control

Set-up and install

Calefa couldn’t be easier to handle and install, set-up, service and maintain.

Wall-mounted with appropriate fixings in two easy access ‘keyholes’ and with connections made, simply power up and the control unit starts automatically and is ready to use after only a few seconds.

With easy access components and a simple 3-piece construction, servicing and maintenance is simplified and is further aided by fault-finding diagnostics delivered through the Electronic Control Unit.

Read the Calefa story

Download a PDF of our Calefa brochure for an overview of its key features, benefits and BESA results, or fill in the form to request a copy in the post, which folds out to present an all but life size representation of the unit and its high quality components.

Download the brochure chevron

Get in touch now to discover more or discuss your next project

01489 581 787
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