These people know what they are doing. You can see many years of experience plus an engineering background – the problem is being addressed exactly at the root of it.
It’s nowadays rare when people looking for an issue (in our case it was a Freon leaking because of the bad valve on a condenser) but not for a money to snatch from the customer.
We had 2 different companies coming and giving us estimates for unit replacement. A lot of money, very confident talk, convincing statements – but nobody really looked into a problem as Eugene did. And it appeared to be just a simple valve and a simple repair. It works for a few months since that with no problem. We’ve got our appliance back!