HVAC work covers furnaces, boilers, air conditioning, heat pumps, ventilation and controls. Start with the equipment type and symptoms, then compare companies that publish experience with that system.
What to compare
Ask about diagnostic charges, estimate terms, equipment options, warranty coverage, maintenance requirements and disposal of old equipment. For replacement quotes, compare model numbers and the full installation scope.
Prepare equipment details
Record the equipment make, model, approximate age, error code and maintenance history if available. Explain whether the issue is constant or intermittent and which parts of the property are affected.