{"product_id":"pentair-mastertemp-300000-btu-natural-gas-electronic-heater","title":"Pentair MasterTemp 300,000 BTU Natural Gas Electronic Heater","description":"\u003ch2 data-path-to-node=\"0\"\u003ePentair MasterTemp 300,000 BTU Premium Electronic Natural Gas Pool Heater (460734)\u003c\/h2\u003e\n\u003cp data-path-to-node=\"1\"\u003eBring ultra-fast heat-up times, residential-grade convenience, and industry-leading energy efficiency to your equipment pad with the Pentair MasterTemp 300K BTU Natural Gas Heater. As a cornerstone of Pentair’s eco-friendly \u003cb data-path-to-node=\"1\" data-index-in-node=\"224\"\u003eEco Select® brand line\u003c\/b\u003e, the MasterTemp series is engineered to deliver high-performance thermal output without dominating your poolscape footprint.\u003c\/p\u003e\n\u003cp data-path-to-node=\"2\"\u003eFeaturing a fully pre-mixed combustion system that meticulously balances air and gas mixture ratios, this 300,000 BTU powerhouse reaches target operating temperatures rapidly, eliminating long wait times before you can enjoy your pool or spa. Enclosed in a sleek, space-saving architectural cabinet, it operates with a whisper-quiet acoustic signature, allowing you to focus entirely on your backyard oasis.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"3\"\u003eSmart Hydronic Engineering \u0026amp; Advanced Controls\u003c\/h3\u003e\n\u003cul data-path-to-node=\"4\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,0,0\"\u003e\u003cb data-path-to-node=\"4,0,0\" data-index-in-node=\"0\"\u003eBest-In-Class 82% Thermal Efficiency:\u003c\/b\u003e Engineered with an advanced combustion chamber configuration that captures more heat per therm of natural gas, lowering seasonal utility overhead compared to traditional atmospheric heaters.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,1,0\"\u003e\u003cb data-path-to-node=\"4,1,0\" data-index-in-node=\"0\"\u003e360° Rotating Digital Display:\u003c\/b\u003e Equipped with an easy-to-view, menu-driven digital control pad that can be physically rotated to face front and center, regardless of how the plumbing inputs align on your equipment pad.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,2,0\"\u003e\u003cb data-path-to-node=\"4,2,0\" data-index-in-node=\"0\"\u003eSmart Diagnostics Matrix:\u003c\/b\u003e Features user-friendly LED indicator lights on the main control board to make real-time system monitoring, water flow tracking, and safety sensor troubleshooting simple and fast.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,3,0\"\u003e\u003cb data-path-to-node=\"4,3,0\" data-index-in-node=\"0\"\u003eLow NOx Certification Profile:\u003c\/b\u003e Built with an eco-conscious, clean-burning burner system certified to surpass rigid low-NOx emissions standards, minimizing your environmental footprint.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,4,0\"\u003e\u003cb data-path-to-node=\"4,4,0\" data-index-in-node=\"0\"\u003eTough Rustproof Composite Enclosure:\u003c\/b\u003e Heavy-duty, UV-stabilized structural composite shell wraps the entire heat exchanger network, guaranteeing immunity to rust, paint flaking, and intense outdoor weathering.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"4,5,0\"\u003e\u003cb data-path-to-node=\"4,5,0\" data-index-in-node=\"0\"\u003eDual-Environment Certification:\u003c\/b\u003e Rated and certified safely for both standard open-air outdoor pads and properly vented indoor equipment room installations.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"5\"\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul data-path-to-node=\"6\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,0,0\"\u003e\u003cb data-path-to-node=\"6,0,0\" data-index-in-node=\"0\"\u003eThermal Capacity Output:\u003c\/b\u003e 300,000 BTU\/hr Rating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,1,0\"\u003e\u003cb data-path-to-node=\"6,1,0\" data-index-in-node=\"0\"\u003eFuel Configuration:\u003c\/b\u003e Natural Gas (NG Only)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,2,0\"\u003e\u003cb data-path-to-node=\"6,2,0\" data-index-in-node=\"0\"\u003eCombustion Architecture:\u003c\/b\u003e Hot Surface Ignition (HSI) with Fully Pre-Mixed Blower System\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,3,0\"\u003e\u003cb data-path-to-node=\"6,3,0\" data-index-in-node=\"0\"\u003eEnergy Efficiency Benchmark:\u003c\/b\u003e 82% Thermal Efficiency Rating\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,4,0\"\u003e\u003cb data-path-to-node=\"6,4,0\" data-index-in-node=\"0\"\u003eControl Interface:\u003c\/b\u003e Pushbutton Digital Thermostat with Diagnostic Status Lights\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,5,0\"\u003e\u003cb data-path-to-node=\"6,5,0\" data-index-in-node=\"0\"\u003eStructural Enclosure:\u003c\/b\u003e Corrosion-Proof, Impact-Resistant Composite Polymer\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"6,6,0\"\u003e\u003cb data-path-to-node=\"6,6,0\" data-index-in-node=\"0\"\u003ePlumbing Connection Layout:\u003c\/b\u003e 2-Inch Quick-Connect Schedule 40 Slip PVC Flanges\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-path-to-node=\"8\"\u003e📊 Precision Sizing \u0026amp; Thermal Performance Expectations\u003c\/h3\u003e\n\u003cp data-path-to-node=\"9\"\u003eA 300K BTU gas heater is the ultimate choice for rapid temperature recovery on medium-to-large residential swimming pools and rapid-fire heating on high-volume spa tie-ins. By utilizing high-velocity internal bypass hydraulics, the MasterTemp maintains an optimal internal water velocity to prevent condensation while maximizing heat transfer, ensuring even, comfortable water temperatures throughout the swimming season.\u003c\/p\u003e\n\u003ch3 data-path-to-node=\"11\"\u003e⚠️ Soft-Sided Pool Restrictions \u0026amp; Trade Installation Mandates\u003c\/h3\u003e\n\u003cul data-path-to-node=\"12\"\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,0,0\"\u003e\u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"0\"\u003eSoft-Sided \/ Pop-Up Pool Prohibitions:\u003c\/b\u003e \u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"39\"\u003eCRITICAL COMPATIBILITY BOUNDARY:\u003c\/b\u003e This commercial-grade induction heating system is \u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"122\"\u003estrictly incompatible with temporary, pop-up, or soft-sided vinyl pools\u003c\/b\u003e (such as standard Intex, Coleman, or Bestway configurations). Soft-sided pools lack the high-volume water flow rates (GPM) and rigid plumbing infrastructure required to safely cool the internal copper\/cupro-nickel heat exchanger. Installing this unit on a soft-sided pool creates immediate melting and structural fire hazards and \u003cb data-path-to-node=\"12,0,0\" data-index-in-node=\"524\"\u003einstantly voids all factory warranties\u003c\/b\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,1,0\"\u003e\u003cb data-path-to-node=\"12,1,0\" data-index-in-node=\"0\"\u003eProfessional Trade Installation Prerequisite:\u003c\/b\u003e Natural gas pool heaters require sophisticated fuel line pressure sizing, high-voltage\/low-voltage electrical terminations, and precise hydronic matching. \u003cb data-path-to-node=\"12,1,0\" data-index-in-node=\"201\"\u003eThis unit must be installed, gas-piped, and commissioned exclusively by a licensed gas fitter and pool professional.\u003c\/b\u003e Self-installation or failure to provide a professional trade invoice will void factory warranty coverages completely.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp data-path-to-node=\"12,2,0\"\u003e\u003cb data-path-to-node=\"12,2,0\" data-index-in-node=\"0\"\u003eEssential Winter Drainage Rules:\u003c\/b\u003e Gas heater heat exchangers are highly susceptible to catastrophic split-cracking if residual water freezes inside the internal headers. Before sub-zero winter temperatures arrive, the heat exchanger must be completely drained via the side manual drain plug, and lines must be thoroughly blown out. Damage caused by winter freeze expansion is not covered under the factory warranty.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cblockquote data-path-to-node=\"14\"\u003e\n\u003cp data-path-to-node=\"14,0\"\u003e📞 \u003cb data-path-to-node=\"14,0\" data-index-in-node=\"3\"\u003eGas Pipe Sizing \u0026amp; Hydraulic Loop Support:\u003c\/b\u003e Pulling 300,000 BTUs requires ensuring your gas meter, supply line diameter, and run length are sized correctly to prevent low gas pressure drops that trigger \"Low Gas\" errors on the digital board.\u003c\/p\u003e\n\u003cp data-path-to-node=\"14,1\"\u003ePlease contact our technical support squad directly to evaluate real-time regional warehouse availability, secure heavy-freight liftgate delivery routing, or confirm the correct plumbing bypass loop configuration for your equipment pad.\u003c\/p\u003e\n\u003c\/blockquote\u003e","brand":"Pentair","offers":[{"title":"None","offer_id":59751414825041,"sku":null,"price":4599.0,"currency_code":"CAD","in_stock":true},{"title":"1 Year - $119.99","offer_id":59751414857809,"sku":null,"price":4718.99,"currency_code":"CAD","in_stock":true},{"title":"2 Year - $239.99","offer_id":59751414890577,"sku":null,"price":4838.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1053\/1186\/2865\/files\/Pentair-MasterTemp-Natural-Gas-High-Performance-Heater-540x.webp?v=1783343146","url":"https:\/\/poolbees.com\/zh\/products\/pentair-mastertemp-300000-btu-natural-gas-electronic-heater","provider":"PoolBees Inc.","version":"1.0","type":"link"}