[Donaldjames]

Has anyone ever replaced or repaired a AC unit located in the helm under the captains seat. We have 2 units located under there and one of them is not working. Just wondering if anyone has any past experience with this . FYI they are Marine Air ( Dometic) units with 16,000 BTU . 2009 Tiara Sovran.

[jclark003]

Yes. I removed the split gas system (evaporator under seat and compressor in engine room) and replaced it with a 16K self contained unit. This required running hard wall hose from pump up to helm unit as well as discharge to thru hull; pump relay connection; power; and rerouting thermostat wire. I ended up reusing the existing fan wiring and routing it as the pump relay so only had to purchase enough wire to reach breaker panel. Dometic makes a replacement self contained unit with a footprint very close to the old evaporator/fan assemble so it all fit very nicely. Was not a difficult job at all.

[Donaldjames]

Yes. I removed the split gas system (evaporator under seat and compressor in engine room) and replaced it with a 16K self contained unit. This required running hard wall hose from pump up to helm unit as well as discharge to thru hull; pump relay connection; power; and rerouting thermostat wire. I ended up reusing the existing fan wiring and  routing it as the pump relay so only had to purchase enough wire to reach breaker panel. Dometic makes a replacement self contained unit with a footprint very close to the old evaporator/fan assemble so it all fit very nicely. Was not a difficult job at all.

Thank you for the reply, I have a heating and cooling boat specialists Arriving soon to help me diagnose the problem. Thank you very much for the prompt reply I really appreciate it. I will post an update as to what they find and how they fix it. Thanks again

[Donaldjames]

Has anyone ever replaced or repaired a AC unit located in the helm under the captains seat. We have 2 units located under there and one of them is not working. Just wondering if anyone has any past experience with this . FYI they are Marine Air ( Dometic) units with 16,000 BTU . 2009 Tiara Sovran.

Has anyone else replaced their air conditioning under the Captains seat at the helm? We are going to take on the task this weekend I just was wondering if anyone else had any experience with this.( By the way I had an excellent reply from Jay Clarke 003 just wondering if there was any additional input.)

[giampiero]

Yes. I removed the split gas system (evaporator under seat and compressor in engine room) and replaced it with a 16K self contained unit. This required running hard wall hose from pump up to helm unit as well as discharge to thru hull; pump relay connection; power; and rerouting thermostat wire. I ended up reusing the existing fan wiring and  routing it as the pump relay so only had to purchase enough wire to reach breaker panel. Dometic makes a replacement self contained unit with a footprint very close to the old evaporator/fan assemble so it all fit very nicely. Was not a difficult job at all.

hi there l just read your reply and l wonder if you might help me too.
owner of a Tiara 43 Sovran 2007, the A/C in the master cabin went off due to a problem to
the mother board which apparently has been discontinued something like 4 years ago by Air Sistem / Dometic.
Do you have any suggestion where to find a new (or a reliable used) one ?
many thanks

[Donaldjames]

Yes. I removed the split gas system (evaporator under seat and compressor in engine room) and replaced it with a 16K self contained unit. This required running hard wall hose from pump up to helm unit as well as discharge to thru hull; pump relay connection; power; and rerouting thermostat wire. I ended up reusing the existing fan wiring and  routing it as the pump relay so only had to purchase enough wire to reach breaker panel. Dometic makes a replacement self contained unit with a footprint very close to the old evaporator/fan assemble so it all fit very nicely. Was not a difficult job at all.

hi there l just read your reply and l wonder if you might help me too.
owner of a Tiara 43 Sovran 2007, the A/C in the master cabin went off due to a problem to
the mother board which apparently has been discontinued something like 4 years ago by Air Sistem / Dometic.
Do you have any suggestion where to find a new (or a reliable used) one ?
many thanks

Are you sure it’s the board? I had replaced my board as I thought that was the problem ( it was not ) and worked with a man in Florida named Rafael. Here is the number or the name of the company Yachtaid in Florida+1 (786) 621-3010

If it is indeed the board, he has a replacement for it. It has a slightly different wiring diagram, but he can walk you through it. It’s really simple. It did not solve my problem and I needed to replace my entire unit if you need information on that I have that as well.