There are lots of qualities that make a good HVAC contractor, but the average homeowner might not be familiar with what they are. Good customer service is pretty obvious, as is having a good reputation, but there's a lot more to it as well:Certification and qualifications: HVAC contractors working in Ontario have to complete an apprenticeship and get a Certificate of Qualification, and ones working in Toronto also require a separate permit to operate. Certification doesn’t necessarily require a contractor to have insurance, but this is something that’s also important. Training and experience: People don’t become good HVAC technicians as soon as they're certified—it’s something that takes time, additional training (such as training that manufacturers provide for their specific equipment), and plenty of experience working in the field. Full range of services: The best heating and cooling contractors in Toronto are full-service companies, meaning they do sales, installation, regular maintenance, emergency services, repairs, replacements, annual tune-ups, inspections, and more. And the best ones aren't just familiar with furnaces and air conditioners: they can also work with water heaters, ventilation systems, boilers, and other HVAC equipment. Overall customer service: Customer service isn't just about being friendly, and HVAC companies should also be available and responsive when you need them (even in the middle of the night), their staff should be fully trained and knowledgeable, and they should provide transparent quotes that are fair, accurate, and easy to understand.