Positive reviews for All Bay Insulation & HVAC highlight the company's expertise in furnace repair service. Customers appreciate the knowledgeable and well-versed team that is able to effectively address issues with ducts, asbestos, and insulation. The company is praised for their efficiency, quick turnaround time, and ability to complete large projects in a timely manner. Customers also value the company's commitment to customer satisfaction and their willingness to come back and fix any issues that arise. All Bay Insulation & HVAC's dedication to providing high-quality work, thorough inspections, and handling rebate processes is also highlighted in the positive reviews.