I was in a similar situation about a month ago. Got two units and neither was working. The smaller one hadn't been working for a couple years, it just cools the room over the garage which we never used so we hadn't bothered trying to get it fixed. Then last year the big main unit which is less than 5 years old started giving me trouble at the end of the season so this spring I called Conway services for their tune up deal on both units. I was thinking the newer one probably just needed to be cleaned and the older on just needed a charge of coolant. Conways tech came out and told me both units were shot and not worth repairing and I needed an upgrade. He said he couldn't believe someone put in a unit less than 5 years ago that still used r22. Their sales guy came out the next day and gave me an estimate of over $14,000 to replace both units. We got a second opinion from a friend of a friend who works in hvac and the guy had them both fixed in less than a couple hours for around $400. The smaller unit he was able to fix with a $5 part he already had on his truck, the bigger unit he was able to get the replacement part under warrantee and we just paid his labor and for the coolant to recharge it after he fixed it. That's was the only thing Conway's tech was right about, the old r22 coolant is expensive as hell and that was the bulk of the $400. I'll never call CONway again.

