- Oct 9, 1999
- 15,216
- 3
- 81
We have roof mounted Lennox heating/ac system. Its one of those compact units that does both. We have gas heating.
Anyway lately this is what I hear when the system kicks in.
15-20 seconds of a loud whirring sound (compressor??) and then 10 seconds of the burners kicking in (growl) and then the fan kicks on.
But I am wondering of the first loud whirring sound. It was never that loud. I dont know what it might be, its on the roof so its not that easy to check out.
The system is blowing hot air, and no problems. I think it does the same for cold air too (but I'll double check tomorrow and have the AC kick in during the day).
I am trying to find the bill. Its about umm.. 5-6 years old.
Edit:
Just updating the specs. I have a Lennox Package system 12GCS036X-75 The install in 2005 cost %3350
Anyway lately this is what I hear when the system kicks in.
15-20 seconds of a loud whirring sound (compressor??) and then 10 seconds of the burners kicking in (growl) and then the fan kicks on.
But I am wondering of the first loud whirring sound. It was never that loud. I dont know what it might be, its on the roof so its not that easy to check out.
The system is blowing hot air, and no problems. I think it does the same for cold air too (but I'll double check tomorrow and have the AC kick in during the day).
I am trying to find the bill. Its about umm.. 5-6 years old.
Edit:
Just updating the specs. I have a Lennox Package system 12GCS036X-75 The install in 2005 cost %3350
Last edited: