A/C Hoses

Alamo stocks manifold gauge hose sets, low-side service hoses, high-side service hoses, vacuum pump hoses, and refrigerant charging hose assemblies for professional A/C service equipment. Hoses are available for both R-134a and R-1234yf service machines, many compatible with Mahle, Robinair, and other professional A/C service platforms.

No. R-1234yf service hoses must be rated for R-1234yf refrigerant compatibility — including the hose liner material and fitting specifications. R-134a hoses may not be compatible with R-1234yf due to differences in refrigerant properties and fitting design. Always use hoses rated for the specific refrigerant being serviced.

Replace service hoses when the hose body shows cracking, kinking, or external damage, when couplings show corrosion or fail to seal consistently, or when the hose liner shows visible contamination or degradation. Leaking service hoses are both an environmental compliance issue and a safety concern — refrigerant release violates EPA Section 609.

Identify your A/C service machine brand and model from the equipment nameplate. Service hoses are matched by refrigerant type, hose length, coupler end specifications, and machine connection fitting. Contact Alamo Equipment with your machine model number for an accurate parts match.

Low-side hoses (blue) connect to the suction port and are rated for lower-pressure applications. High-side hoses (red) connect to the discharge port and must be rated for higher operating pressures. Hose ratings and fitting sizes differ between the two — they are not interchangeable and should never be reversed during service.

Yes. R-1234yf-rated hose assemblies with the correct SAE J2888 fittings are available in this collection for R-1234yf-equipped service machines. These use the physically different fitting design required for R-1234yf to prevent cross-connection with R-134a equipment.

Yes. Alamo Equipment is an authorized Mahle dealer and stocks hose assemblies and replacement parts fully compatible with Mahle A/C service platforms. Provide your Mahle machine model number when ordering to receive specific hose compatibility details, OEM part numbers, and current stock availability.

Generic hoses may fit if the refrigerant type, hose rating, and coupler specifications match the machine requirements. For machines under warranty, using non-OEM hoses may affect warranty coverage. For out-of-warranty equipment, aftermarket hoses that meet or exceed OEM specifications are generally acceptable.