Completed Project

NSW DPI Greenhouse, Glen Innes

Architect: NSW Department of Primary Industries

Builder: PJ Truman Constructions Pty Ltd

Location: Glen Innes, New South Wales

System: Geothermal Exchange System with Horizontal Ground Heat Exchanger

 Project Brief/Scope:

  • NSW State Government project
  • Providing heating and cooling for a key agricultural, research, and community hub
  • Consistent performance irrespective of Glen Innes’ extreme temperature variances
  • Carbon-free alternative to conventional systems

CWL Group provided an energy-conscious alternative to conventional heating and cooling for a state government client, targeting their key hub that provides research, education, farming, and community services, in the New England region of New South Wales.

The water-to-water ground source heat pump that CWL Group installed at the glasshouse utilises a horizontal-ground heat exchanger to tap into the stable heat source/sink that is the earth surrounding the site. Though ambient temperatures in the Northern Tablelands can range from -12ºC to 37ºC, the temperature beneath the earth where the horizontal ground heat exchanger lies remains relatively steady throughout the year. This provides the geothermal exchange system with a source of heat in the winter, and a dense and cool place to reject heat to (a “heat-sink”) in the summer, resulting in increased system efficiency and reduced electrical consumption year-round.

As explained by Northern Tablelands MP Adam Marshall, the new geothermal exchange conditioned glasshouse is, “vitally important for our farmers and graziers to keep ahead of the global agricultural industry and our northern research must play a big part in that overall R&D push,

“The current glasshouses date back to the 1960s and while they can grow plants for basic experiments, there are no climatic control functions – so this will provide for a giant step in their research capability, and bolster research that takes account of changing climatic conditions.

“They will be able to do temperature experiments into tropical pastures and the different environmental effects of those.”

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

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