New furnace with the same old problems

I can’t stand having to handle the same problem twice. When I go through my to-do list for the week, I will feel my eye begin to twitch if I see something on the list from the week before. Sure, there’s things you always have to do on a routine basis, such as picking up groceries. However, I shouldn’t have to make a note to check on my furnace every week, and verify that it’s working as intended. About a month ago, I started to get headaches at night while trying to sleep. I felt like I might’ve just been dealing with head colds, but I wasn’t – it was actually a leak of carbon monoxide from the furnace in my basement! Imagine your air quality being quietly sabotaged by a silent, odorless gas that can easily kill you. It’s enough to scare you, right? Well, the fear died down after the first week, as I had to make it a weekly routine to go into the basement and make sure the furnace wasn’t leaking again. The flue for the furnace seems to have a crack in it, but I can’t figure out where it is! Every time I think I’ve fixed the issue, the carbon monoxide levels in my basement begin to climb – and the headaches come back. At this point, I think I’m just going to have to call a professional heating and A/C technician to handle this issue. Clearly, I can’t figure out the problem – and I can’t risk waiting around until the Spring, because that’s just going to end in disaster for me. I just hope that when I do get this HVAC repair technician in here, he can fix the problem immediately!
a/c serviceman