Outdoor HP Condenser: Hi-Efficient heating & cooling 13 SEER fully charged w/R410A environmental friendly refrigerant. Hi-Efficient Bristol/Benchmark reciprocating compressor/Made In USA. Totally enclosed, permanently lubricated fan motor. Hi/Low pressure switches, liquid line filter and accumulator standard with unit. AHRI Certified Ratings/DOE Approved Standards. Heavy gauge full metal jacket for coil protection. Heavy gauge steel w/internal and external powder coat paint to protect from environmental elements. Hi-Efficient copper tube coils w/aluminum fins and caps plates to avoid rust. Ten (10) yr parts and compressor warranty. Registration not required for full warranty.