10 Valentine Avenue, Parramatta

10 Valentine Avenue, Parramatta

Issue 4: November 2018

Limited space calls for innovative hot water solution



Owned by Australian Unity, 10 Valentine Avenue in Parramatta, NSW is a modern office building comprising 14 levels of office space.

Predominantly leased to the NSW State Government, the property is located approximately 100-metres from the Parramatta Bus and Railway Interchange and Westfield Parramatta.


In August 2017, building parking space was converted to accommodate bike storage and End of Trip facilities – a development undertaken to provide occupants with first-class workplace amenities and boost the building’s all-important NABERS rating.

With the consultant’s project requirements calling for a high-efficiency hot water plant capable of accommodating 10 showers and a 2000-litre load requirement over a two-hour peak, Rheem Commercial sized and proposed a ducted commercial heat pump. Configured to vent cool discharge air into the car park entrance via a sheet metal duct, the system’s flexibility was also a major advantage when it came to accommodating the limited space available for the hot water plant.



In order to provide hot water boost in situations where higher than expected peak loads or low overnight temperatures preclude heat pump hot water recovery, a 15kW heating element was installed in the top third of the 2000-litre storage tank.


Rheem Commercial Sales Manager for NSW and the ACT, Josh Elliott says the Valentine Avenue project perfectly highlighted the benefits of the Rheem heat pump system.

“A number of key factors meant that this project was ideally suited to our heat pump system,” he says. “We had a retro-fit situation, a demand for a high degree of energy efficiency, and a small available installation footprint. The end result was highly successful, enabling office workers to enjoy a shower after riding to work. Just as importantly, it contributed to the achievement of a 5-star NABERS rating.”

In summary

Hot Water plant:

•1 x 95202200D/A Rheem Commercial Ducted Vertical Discharge Heat Pump
•1 x RT2000SS tank
•1 x 15kW heating unit in the top flange for additional kW as required.



Hydraulic Consultant: WSP
Installing Contractor: Mr Water Plumbing