Welcome to Defender Canada! 
Water Heaters
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Seaward Marine Water Heater - 6 Gal Front Heat Exchange
$759.49 - $942.89 -
Seaward Marine Water Heater - 11 Gal Rear Heat Exchange
$853.35 - $1,053.55 -
Seaward Marine Water Heater with Rear Heat Exchanger
$756.69 - $802.89 -
9% offIsotemp Square 16L Marine Water Heater
$1,556.16 - $1,642.96$1,400.62 - $1,642.96 -
9% offIsotemp Basic 24L Marine Water Heater
$1,405.07 - $1,406.47$1,264.65 - $1,265.91 -
9% offIsotemp Basic 75L Marine Water Heater
$1,703.40 - $1,738.40$1,533.16 - $1,564.66 -
Seaward Marine Water Heater - 11 Gal - S1200E
$1,026.95 -
9% offIsotemp Basic 40L Marine Water Heater
$1,449.92 - $1,473.70$1,305.02 - $1,326.42 -
Seaward Marine Water Heater - 6 Gal Rear Heat Exchange
$805.69 - $940.09 -
9% offIsotemp Basic 30L Marine Water Heater
$1,428.88 - $1,449.88$1,286.08 - $1,304.98 -
Isotemp Replacement Water Heater Element
$88.78 - $99.98 -
Seaward Replacement Temperature and Pressure Relief Valve - 75974
$49.58 -
10% offIsotemp SPA 50L Marine Water Heater
$1,470.74 - $1,512.74$1,323.00 - $1,360.80 -
9% offIsotemp SPA 40L Marine Water Heater
$1,102.57 - $1,131.97$992.39 - $1,018.85 -
Seaward High Temperature Limit Switch
$26.76 - $52.38 -
Seaward Replacement Heating Element
$34.18 - $42.58 -
Seaward Replacement Water Heater Thermostat - 73129
$19.89 -
10% off
Isotemp SPA 60L Marine Water Heater
$1,596.76 - $1,638.76$1,436.40 - $1,474.20 -
9% offIsotemp Slim 25L Marine Water Heater
$1,321.06 - $1,344.86$1,189.04 - $1,210.46 -
Seaward Marine Water Heater - 11 Gal Front Heat Exchange
$865.95 - $1,095.55 -
9% off
Isotemp Basic 40 TCT Dual Coil Marine Water Heater
$1,582.90 - $1,615.10$1,424.70 - $1,453.68 -
Whale Quick Connect Flexible Heater Connector - WX1519B
$23.77 -
Seaward Marine Water Heater - S300W
$858.87 -
Seaward Replacement Heating Element for S300W/S350W - 75586
$39.78 -
Seaward Marine Vertical Water Heater - 20 Gal Front Heat Exchange
$1,650.08 - $1,798.48 -
Seaward Marine Water Heater - 20 Gal Front Heat Exchange
$1,281.84 - $1,519.84 -
Seaward Hot Water Heater for Outboard Boats - 3 Gal - S360EW
$1,028.27 -
Seaward Marine Water Heater - 20 Gal - H2050EW
$1,465.22 -
Isotemp Replacement Water Heating Element - SEE00016LA
$102.78 -
9% offIsotemp Slim 15L Marine Water Heater
$1,180.97 - $1,185.17$1,062.95 - $1,066.73 -
9% offIsotemp Slim 20L Marine Water Heater
$1,227.22 - $1,242.62$1,104.58 - $1,118.44 -
9% offIsotemp SPA 15L Marine Water Heater
$870.10 - $973.68$783.16 - $876.38 -
9% offIsotemp SPA 20L Marine Water Heater
$980.71 - $1,025.51$882.71 - $923.03 -
9% offIsotemp SPA 25L Marine Water Heater
$1,018.53 - $1,067.53$916.75 - $960.85 -
9% offIsotemp SPA 30L Marine Water Heater
$1,024.15 - $1,077.35$921.81 - $969.69 -
Seaward Marine Water Heater - 20 Gal Rear Heat Exchange
$1,284.64 - $1,490.44 -
Seaward Marine Water Heater - 20 Gal - H2250E
$1,540.85 -
9% offIsotemp Basic 50L Marine Water Heater
$1,538.14 - $1,594.14$1,384.42 - $1,434.82 -
9% off
Isotemp Basic 75 TCT Dual Coil Marine Water Heater
$1,860.20 - $1,903.60$1,674.28 - $1,713.34