Water-to-Air Heat Exchanger Coil, 18 x 18 in, 120K BTU

Water to air heat exchanger coil delivers fast, efficient heat transfer for hydronic heating and cooling—ideal for outdoor wood furnace tie-ins and forced-air applications. Built with seamless copper tubes and aluminum fins, it maximizes thermal conductivity while staying compact for easier integration. A large 18 x 18 in finned surface and multi-row tube design helps move more heat where you need it, with vacuum-brazed construction and leak testing for dependable operation.

• Delivers up to 120,000 BTU/h heat capacity for high-demand hydronic-to-air heating


• Fits ducted and forced-air setups with an 18 x 18 in finned coil and compact depth


• Includes copper inlet/outlet connections for straightforward plumbing integration


• Resists buildup with epoxy-coated aluminum fins designed for long service life


• Handles tough conditions with -40 to 356 °F operating range and 2.5 MPa max pressure

Designed for workshops, farm buildings, grow rooms, and residential hydronic systems, this finned tube HVAC coil supports heating and cooling loops where space, airflow, and output matter. The 217-fin pack and three rows of 3/8 in copper tubing increase surface area for consistent performance, while galvanized steel plate construction adds rigidity for installation. Add it to your air handler or duct box to convert hot or chilled water into usable air temperature control—grab yours today and get your system ready for the next season.

• Plate area: 18 x 18 in / 457 x 457 mm


• Heat capacity: ≥120,000 BTU/h


• Tube material: seamless copper; fin material: aluminum (epoxy-coated)


• Tube configuration: 3 rows, 3/8 in tubes


• Number of fins: 217


• Port size: 1.1 x 1.4 in / 28.6 x 35 mm (copper inlet/outlet)


• Max working pressure: 2.5 MPa / 362.6 psi


• Operating temperature: -40 to 356 °F


• Overall dimensions: 23.2 x 18.1 x 3.5 in / 590 x 460 x 89 mm


• Net weight: 17.4 lb / 7.9 kg