My old furnace was over 35 years old and still working. I didn't want to press my luck any further so I started with estimates from 6 companies. All came to give me a quote and I must say that Wayne from Air Zone was the most knowledgeable and was able to give me the best quote.
I must also give credit to Shawn and Martin who were the installers who did a great job and were very polite.
All that being said, I definitely would recommend Air Zone to anyone who requires furnace work.