{"product_id":"mestek-hsa11811-hydronic-steam-unit-heater-18400-btu-h","title":"Mestek hsa11811 Hydronic Steam Unit Heater 18400 Btu\/h","description":"\u003ch3\u003eProduct Description\u003c\/h3\u003e\u003cp\u003eThe MESTEK hsa11811 is a horizontal hydronic and steam unit heater designed for forced-air heat distribution in commercial and industrial spaces. It delivers 18,400 BTU\/h at 200 degrees F water temperature using a copper coil heat exchanger. A totally enclosed (TE) motor with thermal overload protection drives the fan at 500 CFM airflow. The motor draws 16 watts at 120 volts and is rated at 1\/4 horsepower. Hot water or steam supply and return connections are 1-1\/4 inch FPT. The unit is rated for a maximum working pressure of 150 psi. Licensed HVAC and mechanical contractors typically handle installation on hydronic heating systems.\u003c\/p\u003e\u003cp\u003eThis unit heater is suited for horizontal ceiling-mount applications in warehouses, garages, loading docks, manufacturing facilities, and similar commercial or industrial spaces where overhead hot water or steam heat distribution is required. The horizontal discharge pattern directs conditioned air along the floor plane for effective zone heating. The fan guard provides personnel protection around the rotating fan assembly. At 24 pounds, the unit is manageable for a two-person overhead installation.\u003c\/p\u003e\u003ch4\u003eKey Features\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e18,400 BTU\/h output capacity rated at 200 degrees F entering water temperature\u003c\/li\u003e\n\u003cli\u003eCopper coil heat exchanger for efficient hydronic or steam heat transfer\u003c\/li\u003e\n\u003cli\u003e500 CFM airflow with fan guard for personnel safety\u003c\/li\u003e\n\u003cli\u003eTotally enclosed motor with thermal overload protection for reliable operation in dusty environments\u003c\/li\u003e\n\u003cli\u003e1-1\/4 inch FPT inlet and outlet connections for straightforward piping integration\u003c\/li\u003e\n\u003cli\u003e150 psi maximum working pressure compatible with typical commercial hydronic and steam systems\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eCompatibility\u003c\/h4\u003e\u003cp\u003eDesigned as an OEM-style replacement or direct installation unit heater for horizontal hydronic and steam heating systems operating at up to 150 psi with 1-1\/4 inch FPT piping connections.\u003c\/p\u003e\u003ch4\u003eInstallation Notes\u003c\/h4\u003e\u003cp\u003eInstallation should be performed by a licensed mechanical or HVAC contractor following applicable local mechanical codes and IFGC or IPC guidelines for hydronic systems. Shut off and depressurize the hydronic or steam supply before making any piping connections. Mount the unit securely to structural ceiling members rated for the combined weight of the unit and piping. Verify that supply voltage matches the 120-volt motor rating before energizing the unit.\u003c\/p\u003e\u003ch4\u003eTechnical Specifications\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHeating Capacity\u003c\/strong\u003e: 18,400 BTU\/h at 200 degrees F\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAirflow\u003c\/strong\u003e: 500 CFM\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 120 volts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Power\u003c\/strong\u003e: 16 watts\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Horsepower\u003c\/strong\u003e: 1\/4 HP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMotor Type\u003c\/strong\u003e: Totally Enclosed with Thermal Overload Protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCoil Material\u003c\/strong\u003e: Copper\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnection Size\u003c\/strong\u003e: 1-1\/4 inch FPT Inlet and Outlet\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaximum Working Pressure\u003c\/strong\u003e: 150 psi\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWeight\u003c\/strong\u003e: 24 pounds\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower Source\u003c\/strong\u003e: Electric\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4\u003eStandard Information\u003c\/h4\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand\u003c\/strong\u003e: MESTEK\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eManufacturer Part Number\u003c\/strong\u003e: hsa11811\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"MESTEK","offers":[{"title":"Default Title","offer_id":51233633665330,"sku":"HSA11811","price":643.57,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0270\/4519\/9983\/files\/307633247.jpg?v=1780105243","url":"https:\/\/voomisupply.com\/products\/mestek-hsa11811-hydronic-steam-unit-heater-18400-btu-h","provider":"Voomi Supply","version":"1.0","type":"link"}