• High efficiency lanced fin design • “No-hassle” 5 year warranty. • R-22, R-410A, AC & Heat Pump compatible. • All coils have durable packaging with bar coded labels on the box. • Threaded expansion valves available factory installed or as a field installed kit. • Coils are air pressure tested at 500 psi, leak tested with helium, sealed with rubber plugs, then charged with dry air. • Piston options include externally accessible body for easy piston change out and/or TXV installation.