SolvedCommercial HVAC
What would you ask before approving commercial hvac work in Dallas?
Asked by Harper Pricein Dallas, Texas· 3/27/2026· 1012 views
I'm in Dallas, Texas and dealing with a 14-year-old rooftop unit in our two-storey home. Over the last month, it has been cooling the space unevenly during occupied hours and we're now noticing the technician who came out last time did not leave any actual readings behind.
One contractor quoted $1,202 for repair, while another jumped straight to a $15,750 replacement because of the age. The weather here has been dealing us dry afternoon heat, 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 economizer settings, supply temperatures, occupancy schedules, and sensor calibration.
commercialrtucontrols
6 Answers
34
✓ Accepted Answer
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 rooftop unit in Dallas. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Isla Foster·3/27/2026
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The price range alone does not tell you enough. Ask what was tested, what failed, and which assumptions are built into the quote. For a rooftop unit that is cooling the space unevenly during occupied hours, the first things I would ask for are economizer settings, supply temperatures, occupancy schedules, and sensor calibration. 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 Dallas, Texas, 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 rooftop unit that is cooling the space unevenly during occupied hours, the first things I would ask for are economizer settings, supply temperatures, occupancy schedules, and sensor calibration. 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 Dallas, Texas, pricing can move around, but the diagnostic process should still be clear.
11
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The price range alone does not tell you enough. Ask what was tested, what failed, and which assumptions are built into the quote. For a rooftop unit that is cooling the space unevenly during occupied hours, the first things I would ask for are economizer settings, supply temperatures, occupancy schedules, and sensor calibration. 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 Dallas, Texas, pricing can move around, but the diagnostic process should still be clear.
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We had something similar and the turning point was asking each company for the actual readings in writing instead of a verbal explanation. We had a related issue with our rooftop unit in Dallas. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Ella Diaz·3/27/2026
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We had something similar and the turning point was asking each company for the actual readings in writing instead of a verbal explanation. We had a related issue with our rooftop unit in Dallas. Once we forced every quote into the same format, the decision got much easier because the weak recommendations stood out immediately.
Claire Bennett·3/27/2026