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Old 08-01-2017, 02:30 AM   #1
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Default Cockpit A/C

I tapped off the aft berth with a new 4" T connector to the A/C vent and inserted a quiet blower and switch for a refreshing cockpit oasis. The first mate really appreciates this when we are buttoning her up for the night or ebd of the weekend!
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Old 08-01-2017, 02:33 AM   #2
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That's a large volume to cool for one vent, guess it may do the trick in the evening but not in daytime sun.
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Old 08-01-2017, 02:40 AM   #3
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Correct - it will not cool the volume in the summer, but even when the enclosure is open, it provides a very cool breeze when happy hour starts. I suspect it will extend our seasons because it will provide enough heat to take the edge off too. It can be directed to blow directly into the aft seating around the pedestal table. Not a back return on a $75 project.
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Old 11-07-2017, 05:03 AM   #4
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By any chance do you have the list of material you used for this project P/N or location to get them from? and most important how did you reach that spot from the AFT area.Sorry I am newbie on the boat, but I really like the idea .. The silent fan was a 5volt (computer style one ) ?

Thank you ,
Jose
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Old 11-07-2017, 11:49 AM   #5
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Hi Marcucho -

I couldn't find part numbers since I used so many sources or spare parts on hand, but hopefully this will help. You didn't mention your boat model, but mine is a 1998 2800 SCR, so I was able to access the existing duct in the compartment at the foot of the aft cabin. There is an internal vent there and with the removal of a couple pieces inside the storage at the foot of that bed could get to the cockpit vent location I wanted. The duct "T" came from online Marine or RV air conditioning parts supplier. Here's what I used:
1. 4" duct T to split the vent supply from the aft berth vent
2. A quiet blower fan (Amazon) normally used for venting engine compartments
3. 4" insulated ducting (important to not use dryer duct tubing since it will build up moisture and mold) - got this from Home Depot
4. Had an illuminated push button electrical switch on hand to turn the blower on and off. Any switch will do and there are many options on Amazon.
5. A 4" duct vent with damper (very important when you need to turn off the cockpit vent, otherwise all of you heat or AC will not work inside when you need it). Found it on Amazon, but there are numerous sources to match your other AC vents.
6. Two conductor marine wire and an inline fuse (check the blower requirements). This wire went directly to the engine compartment to hook to the house battery.

You could alternatively run the electrical wire to the helm switch bank. I chose to place the switch by the vent so my first mate hand an intuitive switch to turn on and off, rather than having to get up to go to the helm and find it. Hope this helps!
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Old 11-07-2017, 02:34 PM   #6
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If the cockpit canvas is closed, the heat from the cabin below will rise and heat the cockpit space simply by leaving the cabin door open. Obviously the same doesn't work for the AC though.

Nice work!!
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Old 11-07-2017, 03:29 PM   #7
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Hi Shrew - Your assessment is basically correct regarding heat I will say that based on the desired effects from the first mate, having a forced-air option with direction control makes her happier than a passive system! If the first mate ain't happy, the captain's not happy!
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Old 11-07-2017, 04:33 PM   #8
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Nice install....
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Old 11-07-2017, 06:10 PM   #9
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Quote:
Originally Posted by cbswaim View Post
Hi Marcucho -

I couldn't find part numbers since I used so many sources or spare parts on hand, but hopefully this will help. You didn't mention your boat model, but mine is a 1998 2800 SCR, so I was able to access the existing duct in the compartment at the foot of the aft cabin. There is an internal vent there and with the removal of a couple pieces inside the storage at the foot of that bed could get to the cockpit vent location I wanted. The duct "T" came from online Marine or RV air conditioning parts supplier. Here's what I used:
1. 4" duct T to split the vent supply from the aft berth vent
2. A quiet blower fan (Amazon) normally used for venting engine compartments
3. 4" insulated ducting (important to not use dryer duct tubing since it will build up moisture and mold) - got this from Home Depot
4. Had an illuminated push button electrical switch on hand to turn the blower on and off. Any switch will do and there are many options on Amazon.
5. A 4" duct vent with damper (very important when you need to turn off the cockpit vent, otherwise all of you heat or AC will not work inside when you need it). Found it on Amazon, but there are numerous sources to match your other AC vents.
6. Two conductor marine wire and an inline fuse (check the blower requirements). This wire went directly to the engine compartment to hook to the house battery.

You could alternatively run the electrical wire to the helm switch bank. I chose to place the switch by the vent so my first mate hand an intuitive switch to turn on and off, rather than having to get up to go to the helm and find it. Hope this helps!

Chuck , Thank you for your quick response. I forgot to say that I have a 2000 2800 SCR so we should have the same air duct distribution. I have attached a picture where I am going to connect the T to get the other line going to the cockpit. Thats going to be the tricky because all the wood cabinet is there on the AFT foot area and I know that it can be removed, but getting 4 " pipe behind the cabinet its going to be interesting. Thank you Chuck for the information provided. Time to gather some parts


Thanks,
Jose
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Old 11-08-2017, 03:45 PM   #10
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Default Parts for Cockpit A/C install

Hi I found some links to parts I used:

Blower
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Switch
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Switch Wiring Pigtail/Harness (this really simplified the switch wiring
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Wire
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

4" Hole saw that comes in handy for this and other projects
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

Since I was putting wiring in the aft cabin, I also added a separate fan
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1

If you have any issues seeing these devices, let me know and I'll get some screen captures (out of town right now and using an iPad that doesn't let me do this easily). - Chuck
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