1989 340SD: how big is your AC

[carboncow]

Boat new to me last summer, AC running but not compressing. Unit is OEM AIrrr and ancient. Thinking of just putting in new unit rather the Diagnosis and recharge.

What do you have as a replacement? 12k, 14k or 15k?


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[SCORPIO]

Can't directly answer your question but you may want to give it a shot of gas if the unit runs, it may only be low on refrigerant. Those ancient units were built a lot tougher than the new units so don't be in a hurry to throw it away. A new one won't last 27 years I'd bet. Besides, a new one will run a few thousand bucks, a recharge could be as little as a couple hundred.
Good luck, and let us know which route you go and if a new unit, how big.
If I had to replace my ancient unit on my 300, I'd go a bit bigger than what I thought I need for a bit of 'cushion' for those really hot days or cold nights. Also, if you have the bridge boat in your pic, there is more area being cooled than on a Dancer so bigger would be good.

 

[topnote]

Mine needed servicing and required freon but it works great now. Dont forget to prime the water inlet after winterization. I have a 1985 Dancer 34'

 

[Mike Blake]

6 Years ago I took the 12000 BTU out and installed a whole new 16000 BTU unit from ..http://www.flagshipmarine.com/ and if you call ask for Tom. A week ago I installed a Nest thermostat an that thing is way to cool.

 

[Pyrojodge]

In the older 340 Sundancers they are 16000 BTU units. I would suggest that you have someone look at the refrigerant for you if it's not getting cold and the compressor is working. On this old dudes if the compressor hisses/ buzzes and pops the breaker then the unit is toast as the compressor is locked up. But if she runs that's what I would do. There's not very places in our area that will even look at marine ACs. For mine I use Marine Tech Concepts they are about the only reasonable local people. There are others but they've been huffing the gas way to long. If you really want to replace it search amazon. They have exact replacement units that are 16000 BTU and affordable.