{"product_id":"raypak-406a-asme-digital-natural-gas-pool-spa-heater-399k-btu-017374","title":"Raypak 406A ASME Digital Natural Gas Pool \u0026 Spa Heater 399K BTU | 017374","description":"\u003ch2\u003eRaypak 406A ASME Digital Natural Gas Pool \u0026amp; Spa Heater 399K BTU | 017374\u003c\/h2\u003e\n\u003cp\u003eRaypak ASME digital natural gas heater with 399K BTU input, bronze headers, and commercial-grade construction for pools and spas. SKU 017374.\u003c\/p\u003e\n\n\u003ch3\u003eFeatures\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e399,000 BTU natural gas input for fast pool and spa heat recovery.\u003c\/li\u003e\n  \u003cli\u003eASME-certified design for commercial and code-required installations.\u003c\/li\u003e\n  \u003cli\u003eBronze headers help improve long-term corrosion resistance.\u003c\/li\u003e\n  \u003cli\u003eDigital controls support simple temperature adjustment and diagnostics.\u003c\/li\u003e\n  \u003cli\u003e120\/240VAC single-phase operation with indoor or outdoor installation capability when vented correctly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eDescription\u003c\/h3\u003e\n\u003cp\u003eThe Raypak 017374 is the 406A ASME digital natural gas heater built for high-demand pool and spa applications. This model uses bronze headers, digital ignition, and a commercial-grade ASME pressure vessel for installs where durability and code compliance matter. Its strong heat output makes it a solid choice for larger bodies of water or projects that need faster recovery without stepping into oversized equipment. For commercial pads, shared amenity pools, and demanding residential builds, this heater is built around performance first.\u003c\/p\u003e\n\n\u003ch3\u003ePro Tip\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm altitude, venting method, gas supply capacity, and electrical requirements. Use the proper Raypak union kit at install, and consider adding the ProTek Shield kit for added internal corrosion protection on compatible digital heater setups.\u003c\/p\u003e\n\n\u003ch3\u003eRelated Parts\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/www.epoolsupply.com\/products\/raypak-protek-shield-kit-for-digital-heaters-017960f\"\u003eRaypak ProTek Shield Kit for Digital Heaters | 017960F\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"https:\/\/www.epoolsupply.com\/products\/raypak-heater-union-kit-21063-801-000\"\u003eRaypak Heater Union Kit | 21063-801-000\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eInstallation Tips\u003c\/h3\u003e\n\u003cp\u003eInstall on a stable equipment pad with clear service access. Verify gas sizing, water flow, venting, and local code requirements before startup. This ASME unit should be installed and commissioned by a qualified pool or mechanical professional.\u003c\/p\u003e","brand":"RayPak","offers":[{"title":"Default Title","offer_id":42376309375061,"sku":"017374","price":4479.95,"currency_code":"USD","in_stock":true}],"url":"https:\/\/www.epoolsupply.com\/products\/raypak-406a-asme-digital-natural-gas-pool-spa-heater-399k-btu-017374","provider":"ePoolSupply","version":"1.0","type":"link"}