Defender Isotherm Summer Sale — Up to 20% Off!

From: Defender Marine - Monday Aug 18, 2025 02:00 pm

Defender

Boat Ready Since 1938

Hot Savings, Cool Performance

Upgrade your boat with Isotherm — engineered for performance, built to last. For a limited time, enjoy special pricing on select models and keep your adventures comfortable with Isotherm.

Deal - 20% OFF

Isotherm Divino The 8 Wine Cooler - 7N08AA1CJ0000

$1089.60 $1362.00

Deal - 20% OFF

Isotemp Slim 25L Marine Water Heater 115V

$754.39 $942.99

Deal - 10% OFF

Isotherm 49 Clean Touch Refrigerator/Freezer Drawer - D049DNNIT41113AA

$1479.60 $1644.00

Deal - 10% OFF

Isotemp Square 16L Marine Water Heater 115V

$999.89 $1110.99

Deal - 10% OFF

Isotherm 2017 Compact Classic Air-Cooled Refrigeration Component System - U260X086P12111AA

$1012.50 $1125.00

Deal - 10% OFF

Isotherm Plus 3701 Holding Plate - U150X050A17161AA

$1572.30 $1747.00

Huge Selection

Fast & Free Shipping

85+ Years of Service

Easy Returns

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Defender USA 42 Great Neck Rd Waterford, Connecticut 06385