Determine type of refrigerant in system.

[linepath]

I received a call to install two new condensers. The previous were stolen from the home. On one of the coils it states that its designed for R22 or 410a. How do I determine what refrigerant was used in the past?

[carmon]

you have a problem..... if there is no refrigerant left who knows......

[timjimbob]

oil smells diferent POE vs Mineral. Maybe smell line set. If TXV equip, that will tell you.

[VTP99]

I received a call to install two new condensers. The previous were stolen from the home. On one of the coils it states that its designed for R22 or 410a. How do I determine what refrigerant was used in the past?

On the coil marked 22/410 I would go with 410. The c/u will come with gas that is a whole lot cheaper. What about the second coil ?

[timjimbob]

Although marked 410, it may be with mineral oil. Must be flushed because you don't know what was in it.
Personally, I think the manufactures are alarmist with POE/mineral mix, but I am not warrantying compressors either.

[VTP99]

Why would anyone go with R22 these days ?

[drz]

If it has an expansion valve check that. But your best bet would be 410 after cleaning the system.

[GT1980]

If it has an expansion valve check that. But your best bet would be 410 after cleaning the system.

Nothin' like a lil' epoxy paint thinner in a pressurized can for "refrigeration flush"...
(do not breathe nor on skin get, it)