TLDR: SantaAir failed to let me know my unit was under warranty, causing me to pay to have my unit refilled, recommended a stop leak service, which was 50% of the cost of the actual repair. Only after going to another service company, which found the leak, in 30 mins without using any sort of stop leak. They offered me $100 dollars to refund my $750 repair that did nothing, in promise that I would not post a review online. Long Version: I called Santa Air in early December 2021 to look at my system (the unit freezing up and appeared to likely be low on refrigerant). I had used Santa Air previously with a good experience. They came out and read the system and confirmed it was low on refrigerant, and gave me have 3 options 1) Just fill the system ~400 2) Fill and use stop leak (and you get a 1 refill within 90 days if it leaks) ~750 3) Full leak test (I can’t remember the exact cost, but I believe it was the most expensive option). When we were discussing options I made sure to ask, is this common for a ~5 year old system, how much is a new coil replacement if the coil is leaking, what would you recommend we do if it was your home. I was told a new coil would likely cost me ~3k, and the stop leak works pretty often. We talked about how much a new system would be also. This whole time, they never mentioned to me that the unit might be under a parts warranty. I even said to them it has to have a leak, you were here before (Feb 2019) and we filled it up. I went with option 2, and by early March the unit was low again. They filled it up for free (Option 2), and again didn’t mention the unit was under warranty. I then reached out for a second opinion, and other companies all said that isn’t normal, did they look into the warranty at all? Never once did SantaAir mention that, they just told me it would cost me about 3,000 to replace the coil on my unit. The other company I called out was able to find the leak in about 30 mins, for much less than SantaAir was asking to find the leak, and didn’t even want to fill a unit that was leaking that would be under warranty, as you would just be paying two times, they actually wanted to troubleshoot the issue and do a long term fix for me. I completely understand that the first time out they may just fill the system as they can’t be sure of a leak. However they failed to mention that my unit might be under warranty at all, causing me to pick a solution I would have not had if I had been presented the information that is standard policy by SantaAir which admitted they missed that step in text messages to me. I contacted SantaAir about this and got a lengthy reply which included “I made mistake so just hope that I can get the forgiveness from you. I have no right to ask for it, just hope. That hurts when I lost your trust but at then end of the day, if you feel like we can help, feel free to let me know. Thanks Todd. John”. He then offered me a $100 dollar refund if I agreed to not post about this online. 100 dollars on a 750 dollar repair that he admits he made a mistake on - another quote “And again, we fail to mention about the potential under warranty then. I really understand what you mean and how can we refund all the cost that we've spent for the business to run for all the work. Not to mention, we did it again on Mar which also lead us to the lost.” His company's mistakes lead to extra costs on him, which is not my fault. Instead I am posting my review online, so other customers can see what happened, and hopefully not have this happen to them. He also claimed he didn’t have a good record system back in 2019 and that is why it was missed that he refilled it before, but I talked to them about that at least 2-3 times while they were here. They will likely reply and said I took the chance, but you can see in his messages, I took the chance based on the information he provided, which he admitted was their mistake of not informing me.