Product Features & Benefits: Available in either natural gas or propane 135K BTU Durable cupro nickel heat exchanger Industry-leading hydraulic performance with faster speed-to-heat capabilityIntuitive and easy-to-operate electronic panel Exclusive "Totally Managed" cupro nickel heat exchanger water flow Low NOx emissions—meets clean air quality standards Product Description: Hayward’s H-Series 135,00 BTU gas heaters for above-ground pools boast industry-leading hydraulic performance along with easy operation. Their extreme durability and environmentally friendly design ensure season after season of premium heating performance. Technical Specifications & Specific Features: Active Defrost No Boost Mode No Brand Hayward Channel Open Line Circuit Amps 5.5000 Cooling Capability No Fuel Type Natural Gas GTIN 610377407113 Heating Capacity (BTU/hr) 135000 Hertz 60 Hz Kilowatts 40 kW Labor Warranty None Low Ambient Operation Yes Master Carton Qty 1 Maximum Fuse Breaker Size (Amps) 15.0000 Pallet Qty 1 Parts Warranty 2-year Phase Heaters 1.0000 Pool Type Above Ground Product Dimensions 22.6 " x 21.4 " x 30.3 " Product Height 22.6 in Product Length 30.3 in Product Weight 100 lb Product Width 21.4 in Rear Clearance - Heaters 6 in Refrigerant Yes Series Heaters H Series Shipping Dimensions 27.3 " x 25 " x 37 " Shipping Height 27.3 in Shipping Length 37 in Shipping Weight 117.5 lb Shipping Width 25 in Side Clearance - Heaters 12 in Silent Mode No Water Flow Rate Max 125 Water Flow Rate Min 20 Product Documentation: Product Warranty Product Manual & Installation Guide Product Brochure