The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - VintageAir for rear A/C?.... anything aftermarket??

4x4Poet · 07-09-2009, 04:15 AM

The main issue would be having rear A/C unit hoses made to R134a standards. The original '72 R12 hoses were just spliced into the eng compartment hoses with a simple "T" and hose clamps. I expect R134's smaller molecules would require upgraded, R134a-capable hoses and fittings just like any aftermarket R134a system's eng compartment hoses. Same need for the rear hose connections.

The rest of the rear A/C unit should work with R134a given it's in good shape. I would have an A/C mechanic check if the original rear air unit is serviceable. Mainly if the evap is uncorroded and undamaged. It's easy to remove. You could then research your R134a connection needs at the rear unit.

07-09-2009, 04:15 AM	#12
4x4Poet Registered User Join Date: Nov 2004 Location: "Under Montana skies." Posts: 1,836	Re: VintageAir for rear A/C?.... anything aftermarket?? The main issue would be having rear A/C unit hoses made to R134a standards. The original '72 R12 hoses were just spliced into the eng compartment hoses with a simple "T" and hose clamps. I expect R134's smaller molecules would require upgraded, R134a-capable hoses and fittings just like any aftermarket R134a system's eng compartment hoses. Same need for the rear hose connections. The rest of the rear A/C unit should work with R134a given it's in good shape. I would have an A/C mechanic check if the original rear air unit is serviceable. Mainly if the evap is uncorroded and undamaged. It's easy to remove. You could then research your R134a connection needs at the rear unit. __________________ '71 GMC K20 Suburban, '71 GMC K10 Suburban, '72 Chevy C10 CST Suburban, '72 Chevy K20 clunker pickup.