Welcome to Defender Canada! 
Air Conditioning
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Dometic Marine Air EnviroComfort AC with Reverse Cycle Heat Retrofit Kit
$3,311.52 - $3,896.73 -
14% offWebasto FCF Platinum Air Conditioning Unit with Reverse-Cycle Heat
$2,581.76$2,194.63 -
Velair Compact i16VSD SMART Marine Air Conditioning Unit (Generation 2) - 16,000 BTU - 115V - 24832JU
$4,670.79 -
Dometic Marvair CR330 Condensation Removal Kit - 9108844722
$549.09 -
Velair Compact i10VSD SMART Marine Air Conditioning Unit (Generation 2) - 10,000 BTU - 115V - 24831GU
$4,349.29 -
Dometic Breathe 4500 Marine Air Purification Add-On Kit - 9620000429
$422.20 -
Webasto Sea Water Intake Kit
$1,505.18 - $1,871.80 -
Velair Compact i21VSD Marine Air Conditioning Unit
$5,515.46 - $6,350.27 -
Dometic SmartStart Soft Starter Accessory
$774.72 -
SoftStart Marine SSM6T Air Conditioner Compressor Soft Starter
$563.20 -
Micro-Air EasyStart Universal Installation Kit - KIT-364-368-Rt2
$14.76 -
Micro-Air EasyCruise Display Adapter - ASY-524-X01
$427.07 -
Micro-Air Compressor Triac Replacement Relay - ASY-503-X2D
$134.23 -
Micro-Air MCC Master Control Display - ASY-407-X02
$782.94 -
Micro-Air MCC Control Board - ASY-405-XXX
$869.74 -
Micro-Air MCC Master Control Board - ASY-406-XXX
$766.54 -
Micro-Air MAQ Control Board - ASY-510-X01
$483.18 -
Micro-Air A-281C Control Board - ASY-555-X0A
$475.14 -
Micro-Air A-288D Control Board - ASY-509-X01
$498.10 -
Micro-Air FX-1 Control Display - Black - ASY-375-X21
$434.87 -
Micro-Air SMXir Control Display/Keypad - 502-09
$336.54 -
Micro-Air 402-IO Compact Control Display - ASY-402-X03
$265.76 -
Micro-Air SMX QHT Display - 325-09
$359.28 -
Micro-Air MA Replacement Trigger - ASY-599-X01
$101.47 -
Micro-Air Triac for FAMU Heater Applications - SUB-360-X0A
$49.21 -
Micro-Air AirNet CAN-to-USB Adapter ASY-388-X01
$394.60 -
Micro-Air Q-Logic CAN Bus Adapter - ASY-505-X1B
$326.60 -
Micro-Air Retrofit Adapter Marvair Seamach Control - ADP-001-X00
$28.48 -
Micro-Air 6-Pin RJ-12 Modular Plug Connector - CON-003-X00
$1.57 -
Micro-Air 8-Pin RJ-45 Modular Plug Connector - CON-004-X00
$2.19 -
Micro-Air EasyStart Flex Soft Starter - ASY-398-X1S-BLUE
$513.84 -
Micro-Air FX2 V2 Air Temperature & Humidity Sensor - ASY-742-X01
$311.92 -
Micro-Air Hydromatic I 2-Stage Control Board
$1,100.59 -
Micro-Air Hydromatic I 4-Stage Control Board
$1,094.63 -
Micro-Air Unity Control Board
$563.72 - $668.12 -
Micro-Air EasyStart Breeze Soft Starter
$405.38 - $454.18 -
Micro-Air A-282 Network Control Board
$786.33 -
Micro-Air FX-1 Control Board
$405.38 - $516.55 -
Micro-Air FX-2 Control Board
$446.15 - $612.93 -
Micro-Air 400-IO Control Board
$598.02 - $730.76 -
Micro-Air FX-Maxx Control Display
$483.18 -
Micro-Air FX Series EasyTouch 8-Pin Control Display
$444.54 - $479.96 -
Micro-Air EasyTouch OEM Control Display
$479.96 -
Micro-Air SMXII-AB Control Display/Keypad
$346.29 -
Micro-Air 402-IO Control Display
$280.26 -
Micro-Air Elite II Control Display
$338.23 -
Micro-Air Pump Relay Board
$339.84 - $412.32 -
Micro-Air Pump Relay in Metal Box
$457.42 - $523.45
About Air Conditioning
Size matters!
You cannot choose the best marine air conditioner for your boat without knowing a few things. First, how large is your boat? Just like a house, the size of the boat air conditioner’s output is based on the number of cubic feet inside your boat. Keep in mind that marine AC units also take into account the inefficiency of a boat compared to a house! The output of the unit is but one size you must consider before purchase - what type of space is available on your boat for the unit itself? The unit footprint could be the most important measurement of all!
Bells & Whistles
The Dometic air conditioners and Webasto units offer an array of extras to consider for your application. Remote controllers, wiring harnesses, displays, wireless remotes - all of these are items to consider before purchase. Rest assured Defender offers a full line of products related to your new marine ac unit that will see you through a retrofit or the replacement of your old unit. And all of our manufacturers offer excellent support and warranties.
When cool is not enough?
Turn on the heat! Both Dometic and Webasto boast reverse cycle heat from their cooling units. So when the nights get chilly, extend your boating season with comfortable heat. This is as close to a marine air split system as you are bound to find and you have plenty of choices right here at Defender.