This review is long overdue. Darren did work for us on several occasions and every time its a 10 out of 10. When one of his guys couldn't make the appointment last year, Darren went out of his way and came to install the gas line in our brand new house himself, although it meant he was going to be late for his own family function. We really appreciated to be able to use our kitchen after a stressful move. On a different occasion, tenants in our rental property called when heat exchanger in their furnace died. This of course had to happen right on Christmas Day last year. Everybody we called wanted to sell us a new furnace. Darren took down furnace serial numbers and called the manufacturer to confirm that in fact the heat exchanger was still under warranty. He then sent one of his guys to pick up a new part from the manufacturer in the morning and installed it the same day for a total price of $500. This saved us at least $3000 not to mention that our tenants were happy to have their heat back in less then 24 hrs. Talk about customer service, value and integrity. Needless to say, we always call Darren for any heating or cooling work and would recommend Park Aire to anyone without hesitation. Keep up the great work! Cheers, Vitaly in Oakville