Jean Sebastien Dulac advises HVAC technicians on building a robust customer base by prioritizing customer satisfaction. Delivering exceptional service, being responsive to inquiries, and communicating effectively instills trust and loyalty. Offering maintenance contracts, providing personalized solutions, and following up post-service enhance client relationships. Leveraging digital marketing, obtaining positive reviews, and networking within the community also contribute to expanding the customer base. Consistent excellence in service and professionalism solidify the technician's reputation and attract new clients.