The other day i took the heater out and checked everything out. The combustion chamber is fine, intake and exhaust was clean. Put it all back together and ran the house for like an hour and i felt OK. So while i cannot pinpoint the issue, i think for now i am just going to run the house and see what happens. The house has only been used a couple times, so maybe theres something with the heater being new that threw me off… hard to say.
I got a new CO and LP detector for safety, so now we just need some damn ice so i can use and test this setup out.