I came home to an absolutely freezing house, with a very strong burning smell throughout, very toxic. At 7PM I had to search for a company who could come right away, as it is going down to -29C. JCD was able to send a technician right away. He was very efficient in finding the problem, and was friendly. My Lennox heater needs replacing, but he was able to get my furnace back up and running for the night, so I have my heat on again! Great service all around, I don't know how I could've gone to sleep with no heat, so I'm a very satisfied customer right now.