{"product_id":"htl16x18","title":"Water to Air Heat Exchanger 16x18 1\" Copper Ports","description":"\u003cp data-start=\"0\" data-end=\"346\"\u003eAB 16x18 water to air heat exchanger is designed for hydronic heating and cooling systems that transfer thermal energy between circulating water and forced airflow. The unit features 3 rows of 3\/8\" seamless copper tubes combined with aluminum fins to support stable heat transfer performance in residential and light commercial HVAC applications.\u003c\/p\u003e\n\u003cp data-start=\"348\" data-end=\"693\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThe heat exchanger is built with 1\" copper ports for integration with boilers, outdoor wood furnaces, chilled water systems, solar-assisted systems, and other closed-loop heating or cooling setups. Its compact coil structure allows installation within ductwork, air handlers, and custom ventilation assemblies where space efficiency is required.\u003c\/p\u003e\n\u003ch2 data-section-id=\"rvwtes\" data-start=\"760\" data-end=\"783\"\u003eHeat Transfer Design\u003c\/h2\u003e\n\u003cp data-start=\"785\" data-end=\"955\"\u003eThis water to air heat exchanger uses a multi-row copper tube and aluminum fin configuration to transfer heat between water and moving air without mixing the two mediums.\u003c\/p\u003e\n\u003cp data-start=\"957\" data-end=\"1274\"\u003eThe coil contains 3 rows of 3\/8\" seamless copper tubes arranged with aluminum fins to increase the total heat transfer surface area. The fin structure is designed with a wavy pattern that improves airflow contact across the coil surface and supports more consistent thermal distribution throughout the exchanger core.\u003c\/p\u003e\n\u003cp data-start=\"1276\" data-end=\"1485\"\u003eCopper tubing provides thermal conductivity for transferring heat from circulating hot or chilled water, while the aluminum fins help distribute thermal energy into the airflow passing through the duct system.\u003c\/p\u003e\n\u003cp data-start=\"1487\" data-end=\"1678\"\u003eDepending on water temperature, airflow volume, and circulation flow rate, the heat exchanger can support heating performance suitable for residential and light commercial forced-air systems.\u003c\/p\u003e\n\u003ch2 data-section-id=\"1h3tfa0\" data-start=\"1685\" data-end=\"1713\"\u003eMaterial and Construction\u003c\/h2\u003e\n\u003cp data-start=\"1715\" data-end=\"1893\"\u003eThe heat exchanger is constructed using seamless copper tubes, aluminum fins, and a reinforced steel casing for structural support during long-term heating and cooling operation.\u003c\/p\u003e\n\u003cp data-start=\"1895\" data-end=\"2189\"\u003eCopper and aluminum are commonly used in hydronic heat exchangers due to their thermal conductivity and compatibility with closed-loop HVAC systems. The tube contact points and casing edges are brazed to improve structural stability under varying operating temperatures and pressure conditions.\u003c\/p\u003e\n\u003cp data-start=\"2191\" data-end=\"2321\"\u003eThe aluminum fins are coated with epoxy resin to improve surface durability and reduce wear caused by continuous airflow exposure.\u003c\/p\u003e\n\u003cp data-start=\"380\" data-end=\"585\" data-is-last-node=\"\" data-is-only-node=\"\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cstrong\u003e\u003cspan size=\"3\"\u003eProduct Information\u003c\/span\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ctable\u003e\u003c\/table\u003e\n\u003ctable style=\"width: 578px;\" border=\"0\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 68px;\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eModel\u003c\/span\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eHTL16x18\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69px;\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eFitting Size\u003c\/span\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 81px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e1\" copper sweat\u003cbr\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78px;\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eDesign Pressure\u003c\/span\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e175psi\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e  \u003cbr\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 68px;\" align=\"center\"\u003e\n\u003cstrong\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eCapacity*\u003c\/span\u003e\u003c\/strong\u003e\u003cb\u003e\u003cbr\u003e\u003c\/b\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 70px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e100,000 Btu\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69px;\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eRating \u003c\/span\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 81px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e175psi @ 350F\u003cbr\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78px;\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e\u003cbr\u003eTest Pressure\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e263psi\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 68px;\" align=\"center\"\u003e\n\u003cspan style=\"font-size: small;\" size=\"2\"\u003e\u003cb\u003eCoils\u003c\/b\u003e\u003c\/span\u003e\u003cspan style=\"font-family: Arial;\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e\u003c\/span\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\n\u003c\/td\u003e\n\u003ctd style=\"width: 70px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e3 rows of 3\/8\", copper\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69px;\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e\u003cbr\u003eFins\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 81px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e12 per inch, aluminum\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78px;\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eMaterials\u003c\/span\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74px;\" align=\"center\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eSteel, Copper, Aluminum\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd style=\"width: 68px;\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eMin. Operating \u003cbr\u003eTemp.\u003c\/span\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 70px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e32F\u003cbr\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 69px;\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eMax. Operating \u003cbr\u003eTemp.\u003c\/span\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 81px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e350F\u003cbr\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 78px;\" align=\"center\"\u003e\u003cb\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eDimensions\u003c\/span\u003e\u003cbr\u003e\u003c\/b\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 74px;\" align=\"center\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eFinned Area16\" x 18\" x 3.5\"\u003cbr\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e*Capacity is based on 180F boiler output\u003c\/span\u003e\u003cspan style=\"font-size: medium;\"\u003e\u003cspan size=\"3\"\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/1775\/3277\/files\/WATER_TO_AIR_quick_sizing_table.pdf?v=1603246528\" title=\"water-to-air-heat-exchanger-size\"\u003e\u003cstrong\u003e\u003cspan style=\"color: #ff8000;\"\u003eWater to Air Heat Exchanger Size Choosing Guide.pdf\u003c\/span\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2 data-section-id=\"14w8821\" data-start=\"2328\" data-end=\"2351\"\u003eInstallation Options\u003c\/h2\u003e\n\u003cp data-start=\"2353\" data-end=\"2469\"\u003eThe 16x18 water to air heat exchanger is designed for flexible installation in hydronic and forced-air HVAC systems.\u003c\/p\u003e\n\u003cp data-start=\"2471\" data-end=\"2741\"\u003eThe 1\" copper ports can be connected using soldered piping connections, threaded adapters, or clamp-supported installation methods depending on system requirements. The unit may be installed inside ductwork, air handlers, furnace cabinets, or custom ventilation systems.\u003c\/p\u003e\n\u003cp data-start=\"2743\" data-end=\"2900\"\u003eProper airflow direction, water circulation rate, and coil positioning should be considered during installation to maintain stable heat transfer performance.\u003c\/p\u003e\n\u003ch2 data-section-id=\"164os46\" data-start=\"2907\" data-end=\"2930\"\u003eTypical Applications\u003c\/h2\u003e\n\u003cp data-start=\"2932\" data-end=\"3069\"\u003eThis water to air heat exchanger can be used in a variety of residential, commercial, and hydronic heating or cooling systems, including:\u003c\/p\u003e\n\u003cul data-start=\"3071\" data-end=\"3374\"\u003e\n\u003cli data-section-id=\"mi2b19\" data-start=\"3071\" data-end=\"3101\"\u003eOutdoor wood furnace systems\u003c\/li\u003e\n\u003cli data-section-id=\"yg55fd\" data-start=\"3102\" data-end=\"3126\"\u003eBoiler heating systems\u003c\/li\u003e\n\u003cli data-section-id=\"1mgkvkm\" data-start=\"3127\" data-end=\"3155\"\u003eForced-air furnace heating\u003c\/li\u003e\n\u003cli data-section-id=\"5dk6ls\" data-start=\"3156\" data-end=\"3182\"\u003eResidential HVAC systems\u003c\/li\u003e\n\u003cli data-section-id=\"27bpwb\" data-start=\"3183\" data-end=\"3222\"\u003eLight commercial heating applications\u003c\/li\u003e\n\u003cli data-section-id=\"usyduv\" data-start=\"3223\" data-end=\"3254\"\u003eChilled water cooling systems\u003c\/li\u003e\n\u003cli data-section-id=\"y27v55\" data-start=\"3255\" data-end=\"3284\"\u003eGarage and workshop heating\u003c\/li\u003e\n\u003cli data-section-id=\"1tg78qy\" data-start=\"3285\" data-end=\"3309\"\u003eHybrid heating systems\u003c\/li\u003e\n\u003cli data-section-id=\"agmx3a\" data-start=\"3310\" data-end=\"3342\"\u003eSolar-assisted heating systems\u003c\/li\u003e\n\u003cli data-section-id=\"4fiwyy\" data-start=\"3343\" data-end=\"3374\"\u003eAir handler coil applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2 data-section-id=\"1s2f8tg\" data-start=\"3812\" data-end=\"3852\"\u003eAirflow and Water Flow Considerations\u003c\/h2\u003e\n\u003cp data-start=\"3854\" data-end=\"4088\"\u003eHeat transfer performance is influenced by entering water temperature, airflow velocity, and system circulation rate. Proper duct sizing and balanced airflow distribution can help maintain stable coil operation within the HVAC system.\u003c\/p\u003e\n\u003cp data-start=\"4090\" data-end=\"4311\"\u003eSystem performance may vary depending on blower capacity, pump flow rate, and installation configuration. Matching the heat exchanger size with the system airflow requirements can help improve overall thermal consistency.\u003c\/p\u003e\n\u003ch2 data-section-id=\"19fl5uw\" data-start=\"4318\" data-end=\"4363\"\u003eCopper Tube and Aluminum Fin Configuration\u003c\/h2\u003e\n\u003cp data-start=\"4365\" data-end=\"4544\"\u003eThe combination of copper tubing and aluminum fins is widely used in hydronic heat exchanger systems due to its balance of thermal conductivity, durability, and weight efficiency.\u003c\/p\u003e\n\u003cp data-start=\"4546\" data-end=\"4829\" data-is-last-node=\"\" data-is-only-node=\"\"\u003eThe seamless copper tubes support internal heat transfer from circulating water, while the aluminum fins increase external surface contact with moving air inside the duct system. This configuration allows the exchanger to operate efficiently in both heating and cooling applications.\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003e\u003cspan style=\"font-size: medium;\" size=\"3\"\u003e\u003cb\u003eFAQ and Support\u003c\/b\u003e\u003c\/span\u003e\u003c\/span\u003e\u003cbr\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eTips for mounting Air to Water Heat Exchanger:\u003cbr\u003eIf your air system has an overheat sensor, be sure to install the Air to Water Heat Exchanger far enough away from it so that the heat from the exchanger won't interfere with the sensor's readings.\u003cbr\u003e\u003cspan style=\"font-family: Arial; font-size: large;\" size=\"4\"\u003e\u003cspan style=\"font-size: small;\" size=\"2\"\u003eWe have worked with heating systems for over 10 years and are happy to help you with any questions or concerns that you may have. You can email us at \u003cstrong\u003esupport@alfaheating.com\u003c\/strong\u003e or call us at \u003cstrong\u003e833-328-6888\u003c\/strong\u003e for help with your heating projects.\u003c\/span\u003e\u003c\/span\u003e\u003c\/span\u003e\u003c\/p\u003e","brand":"AB","offers":[{"title":"Default Title","offer_id":46831338193067,"sku":"HTL16X18","price":183.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1775\/3277\/products\/air_to_water_heat_exchanger_12x12_b786b1be-4914-430f-87e6-06b81aa5cf4a.jpg?v=1601110720","url":"https:\/\/alfaheating.com\/products\/htl16x18","provider":"Alfa Heating Supply","version":"1.0","type":"link"}