SolvedAC Installation
Anyone dealt with a replacement cooling system coming in with very different tonnage and pricing in Adelaide?
Asked by Charlotte Pricein Adelaide, South Australia· 4/1/2026· 404 views
I'm in Adelaide, South Australia and dealing with a 10-year-old replacement cooling system in our older detached house. Over the past two weeks, it has been coming in with very different tonnage and pricing and we're now noticing we are trying to decide this week and i do not want to sign off blindly.
One contractor quoted A$1,134 for repair, while another jumped straight to a A$13,961 replacement because of the age. The weather here has been dealing us coastal humidity, so I do not want to wait too long, but I also do not want to approve the wrong scope.
If you were comparing bids on this, what would you want checked first? I especially want to know how much weight you would give to load calculation, duct condition, insulation assumptions, and line-set reuse.
replacementsizingpricing
8 Answers
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✓ Accepted Answer
From a contractor side, I would not approve a major repair or replacement without test results that line up with the symptoms. For a replacement cooling system that is coming in with very different tonnage and pricing, the first things I would ask for are load calculation, duct condition, insulation assumptions, and line-set reuse. If the contractor is recommending bigger work, ask them to explain which measurement supports that recommendation and whether they ruled out airflow or controls first. In Adelaide, South Australia, pricing can move around, but the diagnostic process should still be clear.
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From a contractor side, I would not approve a major repair or replacement without test results that line up with the symptoms. For a replacement cooling system that is coming in with very different tonnage and pricing, the first things I would ask for are load calculation, duct condition, insulation assumptions, and line-set reuse. If the contractor is recommending bigger work, ask them to explain which measurement supports that recommendation and whether they ruled out airflow or controls first. In Adelaide, South Australia, pricing can move around, but the diagnostic process should still be clear.
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The recommendation should be tied to measurements, not just the age of the equipment. Age matters, but it is not a diagnosis on its own. For a replacement cooling system that is coming in with very different tonnage and pricing, the first things I would ask for are load calculation, duct condition, insulation assumptions, and line-set reuse. If the contractor is recommending bigger work, ask them to explain which measurement supports that recommendation and whether they ruled out airflow or controls first. In Adelaide, South Australia, pricing can move around, but the diagnostic process should still be clear.
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Before signing anything, I would ask the technician to show the readings and explain which number actually supports the recommendation. For a replacement cooling system that is coming in with very different tonnage and pricing, the first things I would ask for are load calculation, duct condition, insulation assumptions, and line-set reuse. If the contractor is recommending bigger work, ask them to explain which measurement supports that recommendation and whether they ruled out airflow or controls first. In Adelaide, South Australia, pricing can move around, but the diagnostic process should still be clear.
24
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From a contractor side, I would not approve a major repair or replacement without test results that line up with the symptoms. For a replacement cooling system that is coming in with very different tonnage and pricing, the first things I would ask for are load calculation, duct condition, insulation assumptions, and line-set reuse. If the contractor is recommending bigger work, ask them to explain which measurement supports that recommendation and whether they ruled out airflow or controls first. In Adelaide, South Australia, pricing can move around, but the diagnostic process should still be clear.
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I would compare how clearly each contractor explains the diagnosis, not just the price. The clearer company ended up being the better hire for us. We had a related issue with our replacement cooling system in Adelaide. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Owen Walker·4/1/2026
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We used the directory reviews to filter out firms that were vague about what they had actually tested. That saved us a lot of time. We had a related issue with our replacement cooling system in Adelaide. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Charlotte Price·4/1/2026
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If you can, ask whether they checked airflow before recommending equipment. We nearly replaced a system when the bigger issue was elsewhere. We had a related issue with our replacement cooling system in Adelaide. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Sofia Nguyen·4/1/2026