When contacting client references, ask specific questions to gauge their experiences with the HVAC company. Inquire about the quality of work performed and whether it met their expectations. Ask if the company adhered to the agreed-upon timelines and if any delays occurred. Understanding how the company handled any issues that arose during the project can provide valuable insights. Additionally, inquire about the overall customer service experience and whether they felt valued as clients. Asking for both positive and negative aspects of their experience will help you form a well-rounded view of the company.