{"product_id":"rheem-avia-hd-018081-nitek-natural-gas-pool-heater-399-000-btu","title":"Rheem AVIA HD 018081 NiTek Natural Gas Pool Heater - 399,000 BTU","description":"\u003cp\u003eThe Rheem AVIA HD 018081 is a natural gas pool and spa heater with a NiTek heat exchanger.\u003c\/p\u003e\u003ch3\u003eModel details\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eModel P-M404A-EN-N \/ 404A\u003c\/li\u003e\n\u003cli\u003e399,000 BTU input\u003c\/li\u003e\n\u003cli\u003eLow-NOx design\u003c\/li\u003e\n\u003cli\u003eNiTek heat exchanger\u003c\/li\u003e\n\u003cli\u003eDigital controls and integrated Wi-Fi\u003c\/li\u003e\n\u003cli\u003eRaymote app connectivity\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eRequires professional installation, correctly sized natural gas service and compatible electrical supply. Confirm installation clearances and local requirements before ordering.\u003c\/p\u003e\u003ch3\u003eFuel and heater sizing\u003c\/h3\u003e\u003cp\u003eThis is the natural gas configuration. Confirm that your supply matches before ordering. Gas-heater BTU input is the fuel input rating; usable heat output also depends on thermal efficiency. Pool volume, starting water temperature, desired warm-up time and heat loss determine the capacity needed.\u003c\/p\u003e\u003ch3\u003eInstallation requirements\u003c\/h3\u003e\u003cp\u003eA qualified installer should confirm gas-line capacity and pressure, electrical supply, water flow, equipment clearances and installation altitude. Indoor installations need the correct manufacturer-approved venting arrangement. Check the existing pad and plumbing connection positions when replacing another heater; matching BTU size alone does not guarantee a direct fit.\u003c\/p\u003e\u003ch3\u003eComplete the installation\u003c\/h3\u003e\u003cp\u003eSite-specific gas fittings, electrical work, venting accessories and installation labor are separate. For remote control, verify the listed interface and any required network or automation hardware. Maintain the manufacturer's water-balance targets and keep the circulation system in good condition to protect the heat exchanger.\u003c\/p\u003e","brand":"Mikan Supply","offers":[{"title":"Default Title","offer_id":44940079562794,"sku":"RHM-15-4812","price":4600.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0724\/6875\/8570\/files\/avia018081.jpg?v=1791240484","url":"https:\/\/mikanpool.com\/products\/rheem-avia-hd-018081-nitek-natural-gas-pool-heater-399-000-btu","provider":"MIKAN POOL SUPPLIES","version":"1.0","type":"link"}