Customer Dispute Over a System That 'Never Worked'
A homeowner calls six months after a heat pump installation, claiming the system 'never worked right' and demanding a full refund. The installing company's records show a commissioning report with measured airflow of 1,050 cfm, a temperature split of 18 F, and a recorded outdoor temperature of 88 F at start-up. The homeowner has since replaced the thermostat themselves with a third-party model and added a smart vent system in two bedrooms. The system now short-cycles and the homeowner reports high bills. The service technician arrives and finds the new thermostat configured for a single-stage compressor while the unit is two-stage, and two smart vents closed. The homeowner is angry and threatens a review campaign.
1. How should the technician document and communicate the findings without inflating or dismissing the homeowner's complaint?
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The technician should record objective measurements: current thermostat configuration, the model and settings, the number and position of closed smart vents, static pressure before and after opening the vents, and the system's stage behavior. The original commissioning report should be referenced as the baseline. Communication should separate what changed after installation from what the installer controlled. The technician can acknowledge the homeowner's frustration, explain that the third-party thermostat was set for a single-stage unit and that closed smart vents raised static pressure and reduced airflow, and note that the original start-up data met the design targets. Avoid blaming the homeowner; frame it as a configuration issue that can be corrected. Offer a written summary of findings and a corrective plan, and avoid promising a refund the company has not authorized.
2. What corrective actions should be taken, and how should they be verified?
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Reconfigure the thermostat for two-stage operation and verify the staging sequence with a call for second stage. Open the smart vents or remove them, then measure external static pressure and airflow to confirm the system is within the manufacturer's rating, targeting roughly 400 cfm/ton in second stage. Verify the temperature split and refrigerant charge at stabilized conditions. Check that the thermostat's auxiliary and compressor lockouts are appropriate. Run the system through a full cycle and record supply and return conditions, static pressure, and stage timing. Provide the homeowner with the updated commissioning data and a plain-language explanation of what changed. Follow up after a week to confirm comfort and energy use, and document the follow-up.
3. What customer-service and documentation practices reduce the risk of this dispute escalating?
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Keep a complete installation and commissioning file, including the load calculation, equipment selection, measured airflow, charge verification, and thermostat settings, because it establishes the baseline. When a homeowner modifies the system, document the modification and its effect with measurements rather than opinion. Use a written service report with findings, actions, and recommendations, and have the homeowner sign or acknowledge it. Communicate in plain language, set expectations for follow-up, and avoid adversarial language. If the homeowner remains dissatisfied, escalate to a manager and offer a documented resolution path. Maintain professional records of all calls and visits. This protects both parties and supports a fair resolution without conceding fault that the data do not support.