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Welsh Science Park chooses Rinnai R290 heat pumps for heating and hot water decarbonisation 

  • Aug 25, 2025
  • 1 min read

Wales’ first dedicated science park has installed a custom-designed Rinnai heating and hot water system. The solution features multiple R290 high-temperature air source heat pumps, buffer vessels, and Modbus BMS integration – delivered as a complete, optimised package by Rinnai’s in-house design team. The three-storey facility is built to BREEAM Excellence standards, comprising offices, laboratory and workshop space for up to 700 people.

Rinnai supplied 10x 27kW high-temperature ASHPs, all with anti-corrosion treatment to protect from erosion caused by the nearby sea air. The system also has a custom-designed 3000-litre buffer vessel.

Rinnai’s ASHPs use R290 and have a low scoring GWP (Global Warming Potential) refrigerant. Energy efficiency is improved by 10%, enabling water temperatures of up to 75°C, while R290 usage provides compliance with European F-Gas regulations.


The range is available in 11 different sizes from 6kW up to 50kW. All units allow for time-sensitive programming and have an ERP rating of A +++ and A ++. 

 

 

 
 

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