We checked all air filters. They’re perfectly clean.

Thank you! I do believe we needed a new fan last summer, but I don't think it was installed or connected properly and a series of band-aids have been done in the last year. What would get replaced in the above situations you mention?

Was the condenser (outside unit) or furnace replaced? In your post you just say "it needed a new fan" and there are fans in both units.

There are multiple reasons an AC will freeze. The company you choose ultimately has to know what those reasons are to be able to fix it.

Most HVAC companies have a licensed contractor that sits behind a desk. This person rarely runs or does any service work. In some remote cases this person may have never done any real amount of service work. He may have had *help* to get the license he got.

Then to keep overhead costs low, this person hires people with little to no real experience... it's a recipe to disaster when high skilled problems develop.

If you're not confident in this company, it's probably not going to get any better.

I service the Katy, Texas area.

If you live in or near Mercer county I can recommend a competent HVAC company that should be able to diagnose and fix your problem.

Did the current company add refrigerant on prior service visits without determining the source of the leak?

The condenser I fairly new (we didn’t replace it upon buying the home, but it’s on the newer side). We replaced the furnace. And yes, Freon was added last summer and again Sunday without determining if a leak was present.

sounds like a typical gas n go...they should be outlawed...

IMO

And yes, Freon was added last summer and again Sunday without determining if a leak was present.

It's been determined for you. An AC system doesn't use up refrigerant. If you have to keep recharging it, there is a leak somewhere. Most of the time the fix will require replacement of a major component at least.

Sometimes you may get lucky and the leak repair doesn't require a major component change, but these can still be costly in some cases.

If you don't hire someone 'known' to be skilled in this area... the proposed fix will probably not last that long. (maybe a season or two)

I service the Katy, Texas area.