Keel cooling products

11 products

Hull-mounted external heat exchangers: engine coolant flows through tubes outside the hull and is cooled by the surrounding sea water, eliminating raw-water pumps and strainers.

Filter products: Keel cooling

R.W. Fernstrum & Company

GRIDCOOLER Keel Cooler – 90/10 Copper-Nickel

Keel cooler (external hull-mounted)

Hull-mounted rectangular-tube keel cooler in heavy-walled 90/10 CuNi with one-piece header, silver-brazed; enhanced interior tubing optional.

R.W. Fernstrum & Company

GRIDCOOLER Multi-Pass Keel Cooler

Keel cooler (multi-pass configuration)

Multi-pass GRIDCOOLER arrangement routing coolant through several tube passes; offered alongside the standard single-pass design.

R.W. Fernstrum & Company

GRIDCOOLER Stacked & Angled Tube Keel Coolers

Keel cooler (compact / stationary configurations)

Stacked units for more heat transfer in a smaller footprint; angled-tube units for side-mounted zero-knot or stationary duty.

R.W. Fernstrum & Company

Replacement Parts & Installation Support

Aftermarket parts / support

GRIDCOOLER anode kits (zinc/aluminium), gasket and isolator sets, compression sealing kits for cofferdam installs, and manuals.

Duramax Marine

DuraCooler Keel Cooler

Keel cooler (external hull-mounted)

One-piece 90/10 CuNi keel cooler with streamlined header and flow-diverter scoops; through-hull or flange mount, single or double pass.

Duramax Marine

DuraCooler SuprStak Keel Cooler

Stacked keel cooler

Double-stacked CuNi keel cooler with TurboTunnel header and turbulizer spacers; the company says it doubles heat transfer in half the hull space.