1. Don't expect 134a to cool as well as R-12 no matter what you do.
2. To give 134a the best shot, buy a 134a expansion valve.
3. Dryers are refrigerant specific. Get one for 134a.
4. You only have to replace seals on fittings you disconnect.
5. There's enough room for straight adaptors, you don't need angle ones.
6. For your hot weather, I'd stick with R-12. There's not that much difference in the price of R-12 and 134a.
2. To give 134a the best shot, buy a 134a expansion valve.
3. Dryers are refrigerant specific. Get one for 134a.
4. You only have to replace seals on fittings you disconnect.
5. There's enough room for straight adaptors, you don't need angle ones.
6. For your hot weather, I'd stick with R-12. There's not that much difference in the price of R-12 and 134a.