VentMaster --------------------------------------------------------------------------------Available Capacities:150,00 BTU/HR thru 250,000 BTU/HRAvailable Warranties:3 year limited tank warranty--------------------------------------------------------------------------------Features:NON-CONDENSING DESIGN - Helps prevent corrosion - no condensate pump or drain needed. INTEGRAL AUTOMATIC BLOWER - With 110/120 volt electrical system. PATENTED MULTI-FLUE TANK DESIGN - Proprietary steel formulation, patented multi-flue design, and two coats of high temperature porcelain enamel to maximize corrosion resistance result in a superior heat exchanger design. SPARK-TO-PILOT IGNITION SYSTEM - Standard on all models. Provides reliable and energy saving ignition sequencing by igniting the pilot only when the thermostat calls for heat. System Sentinel LED Diagnostic System Full port, full flow brass drain valve No masonry or metal vent chimney required Installs with 3" or 4" schedule 40 PVC pipe Vents up to 50 feet