Guidelines and Recommendations

Tecumseh Alternate Refrigerant Position Letter: 

Refrigerant Matrix:

R22 Alternate Refrigerant Selection Guidelines:

Service Guidelines HCFC R22 to HFC Blends:

Guidelines for Utilization of R134a:

Guidelines for Utilization of R410A:

Guidelines for Utilization of R404A and R452A:

Guidelines for Utilization of R407C:

Guidelines for Utilization of R600A and R290:

Refrigerant Line Sizes for Remote Systems:

Cap Tube Sizing:

Refrigerant Line Sizes for Remote Systems:

System Design Considerations for Good Oil Return on Commercial Systems:

Machine Compartment Design in Cabinets:

Refrigerant Filters and Driers:

Accumulators:

Heat Pump Water Heater:

Factory Test Pressures:

Compressor Cycling: