Heating and Air Conditioning: Technical Service Bulletins

• A/C - Refrigerant 134a Use
• A/C Refrigerant - Identifier
• A/C - Substitutes for R-12 Refrigerant
• A/C Refrigerant - General Recovery & Recycling Tips
• A/C - Revised Sealing Rings for Expansion Valves
• A/C - Use of Correct Refrigerant
• A/C - Refrigerent Oil Volume Capacities