Complete newbie to HVAC systems, so please bear with me.
This is my situation. Want to get your opinion.
1) I've lived in my home for 8 years now. In that time, the air that was pushed through the vents was always at variable speeds. It made the house (especially upstairs) very comfortable.
2) A few weeks ago, an a/c repair man changed out the fan that sits on top of the condensor. He also replaced a couple of small parts, but don't know their name or function.
Now, the air speed from the vents is not variable any more. It is either completely off, or blowing at full speed.
I called him and he said that the airflow is controlled by the thermostat, not the outside unit.
What are your thoughts?
A) Is he correct, and the incident that I've encountered coincidental?
or B) is he inaccurate in his assessment?
I am willing to find someone else to fix what he has done, but I would first like to know if I'm on the right track. Your thoughts are greatly appreciated.