Heat Pump A/C unit not pumping cold air, but fan is running
Hello everyone, first time poster so please bare with me.
We have 2 units, the main floor unit stopped working this week. By "stop working" I mean that the unit will not blow cold air. The fan appears to be blowing because air is coming out of the vents and the air is room temperature. We turned the system off for a couple of days, thinking it may be frozen. However, this did not work.
We contacted a service company and he came out yesterday afternoon. I was with him as he inspected everything. First he found that the air filter needed to be replaced. His first assumption was that this had caused the system to lock up or something along those lines. Thus, the system was not able to pull air through to cool, causing the system to go into a lockdown mode that shut itself off automatically.
Then, I left him alone for another 30-45 minutes. He then returned to say that the TXV valve was bad and would need to be replaced. In addition, the freon would need to be flushed and replaced, and the filter that's located near the TXV valve would need to be replaced at the same time. All for $1200-1500 depending on if I bought the maintenance plan or not.
So, my question is, does this sound right? How can I verify his findings? Can I do this fix myself? We don't have enough money to do this right now, as I've been laid off for over 5 months and only my wife is supporting us.
Any help or advice is greatly appreciated. Thank you!
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Shane
This is a Lennox system, 2002, installed in 2003.