Water-to-Air Heat Exchanger 16x16 in, 3-Row, 3/8 in Ports

Water to air heat exchanger transfers heat efficiently between liquid and airflow, helping stabilize temperatures in hydronic heating, cooling loops, and DIY thermal management setups. This 16" x 16" core uses 3 rows of 3/8" copper tubes with dense aluminum fins to increase surface area and airflow contact. Copper-brazed construction and a thickened interface are built for high-pressure, high-temperature operation where reliability matters.

• Delivers fast heat transfer with 3-row 3/8" copper tubes and 193 aluminum fins for strong air-to-liquid exchange.


• Handles demanding systems with copper-brazed joints and a thickened interface designed to reduce leak risk.


• Resists corrosion with epoxy-coated fins that help limit scaling from water vapor and extend service life.


• Fits versatile builds with 16" x 16" plate area and 3/8" (1 cm) copper ports for common plumbing connections.


• Supports wide operating ranges from -40°C to 180°C (-40°F to 356°F) for year-round installations.

Designed for builders who need efficient, space-conscious heat exchange, this copper-and-aluminum radiator-style core suits workshops, garages, off-grid systems, and custom HVAC/hydronic projects. The dense fin pack increases effective surface area for better thermal transfer, while the brazed construction supports higher working pressures than light-duty alternatives. Confirm your airflow, mounting space, and port routing before install to match your system layout. Grab yours today to keep your loop running at steadier temperatures.

• Type: Water-to-air heat exchanger


• Plate area: 16 x 16 in / 40.64 x 40.64 cm


• Overall size (L x W x H): 21.57 x 16.06 x 3.62 in / 548 x 408 x 92 mm


• Ports: 3/8 in (1 cm) copper ports


• Tube layout: 3 rows of 3/8 in copper tubes


• Fins: 193 aluminum fins (epoxy-coated), 12 fins per inch


• Operating temperature: -40°C to 180°C / -40°F to 356°F


• Maximum working pressure: 2.5 MPa


• Heat capacity: ≥80K BTU; stated output up to 160K BTU/h


• Main materials: Copper, aluminum


• Color: Gold


• Net weight (with accessories): 13.65 lb / 6.19 kg