Completed Project

Double Bay Project

Architect: PopovBass

Builder: Komplete Constructions

Location: Double Bay, Sydney NSW

System: Hydronic Air-Source Heat Pumps

Capacity: 56kW

Project Brief/Scope:

  • High-end residential project
  • European hydronic air-source heat pumps
  • Involved in the project well after construction had begun
  • “Future-proofed” system
  • Quiet operation

CWL Group became involved in this project part way through the construction process. Prior to their involvement, the plan had been a conventional air-source VRF cooling system with gas-powered hydronic underfloor and domestic water heating.

CWL Group were brought in to provide a ‘future-proofed’ heating and cooling system for the residential property. There were several challenges that needed to be addressed, including:

  • Mitigating local council noise restrictions, which limit the use and/or location of conventional air-cooled air conditioning systems
  • Adapting the consultant-engineered conventional mechanical VRF design to the new hydronic fan-coil unit strategy at the eleventh hour, without affecting the architecturals

Due to becoming involved in the project well after construction had begun, installing a geothermal exchange system was no longer an option as it was impossible to install a ground heat-exchanger without nullifying the building works that had been completed up to that point. Instead, CWL Group engineered a hydronic-based air-source heat pump system that was able to fit into an internally-located central plant room.

This achieved the key objectives of providing a 100% electric-powered high-efficiency hydronic underfloor heating and forced-air central cooling system, as well as meeting the council noise requirements of being inaudible at the neighbouring property boundaries.

CWL Group was able to assess what had already been planned and use their specialised experience to enable the client to pivot well into the construction phase of the programme. This project exemplifies how GWL Group’s innovative engineering and installation team can attune solutions to any project’s varying targets and constraints.

bathroom construction

hydronic underfloor heating

central heating and cooling system

Our Trusted Partners

We wanted to drop you a line to say thank you for your expertise and professionalism during our geo journey. Your patience and outstanding knowledge were visible along the way and greatly appreciated. Congratulations in assembling a team who have all been of the same high standard. It has been a pleasure to deal with all of you.
- Jenine Cranston and Douglas Fone, Artarmon, Sydney
We engaged CWL for the geothermal exchange and HVAC works on our unique project in Bellevue Hill and were selected based on pricing and their previous experience. It turned out to be the best choice in subcontractors we made for the whole project. Their professionalism, work ethic, expertise and willing to help wherever needed made a highly complex services installation that much easier, and more efficient than expected. I’d like to personally thank James and the site team who put the extra effort in at all times to get our project over the line with remarkable results. Highly recommended Subcontractors and mechanical consultants.
- Theo Elphick, Site Manager, Built
A culture of striving for excellence combined with motivated and dedicated staff is what defines CWL Group. Their workmanship is second to none and it is obvious that all of the staff care about what they do. Commitments are met and exceeded and there are no problems that can’t be resolved. I’m looking forward to working with Clayton and his team in the future and have no hesitation in recommending them to anyone.
- Mick Carroll, Bellevarde Constructions
The team from CWL Group are very reliable, responsive and efficient in their work. They go above and beyond to make sure the job is completed at its highest standard. The knowledge of the guys is exceptional. I would recommend the CWL Group team every time!
- Annemarie Rodrigo, Bellevue Hill House Keeper
I want to thank CWL Group for the outstanding work in installing our hydronic heating system. I have worked with many plumbers over the years and I have never seen such a high standard of workmanship. They came in on time and on budget. I cannot recommend the team from CWL Group highly enough.
- Robert & Roberta Cook, Blue Mountains

Service that goes Above and Beyond... and Below.

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