Frustrated with Dometic

I m not a fan of self contained… they're still a bit loud and you re going to have to add a water pump in the bilge. That’s a Johnson 70, right? Do you have a thru hull for direct head discharge at the bow? You could use that. But still loud.

Have you tried other source for the compressor? They're pretty much off the shelf. You don’t have to replace the whole condenser.

Or ditch Cruisair and see if you can get a replacement condenser from one of the US manufacturers like Ocean Breeze or Flagship, both around Stuart.

If your boat is like the one I ran, not a lot of space to pull the condenser from the forward port corner of the ER.

Crusiair sucks. 3 years ago one of the chillers on the 84 I was running failed and it was a 3 months wait. That was before C19 and all the supply chain BS. My AC guy ended up rebuilding it in 2 weeks.

Flagship is really good. I concreted my 53 to their chiller system. Well built and simple off the shelf stuff. No proprietary boards.

Assuming you have a split system, contact an industrial/ commercial ac company, they'll come in and swap out the compressor, no big deal. For some reason the marine guys are allergic to this.

Get your compressor rebuilt. Easy and faster.

You can’t rebuild a compressor. Easy to replace it. Unless by compressor you meant condenser.

Yes you can, we sell our used compressors to guys that break them open, rebuild them and resell with warranty. It's perfect for older units that are in otherwise good condition.

What size are you talking about? Typical marine Compressors aren’t that expensive… factoring the labor to install a new one, I don’t see the point.

Your correct if a new replacement is available. This applies to compressors that aren't available any more. The ones our goberment thinks are bad.

There is a tag on the compressor, bring it to a a local ac supply house. I replaced one on a 16k btu 110v Marine air split system from 1989 about 3yrs ago.

We tried just replacing compressors in the past. Lots of flushing and back flow with nitrogen.
50% (30 day) hit rate. We finally gave up. Hard to warranty when we know the whole system is usually trashed with debris and/or burnt freon.
80% with new condensing station. No issues with new systems (amazing how that works).
It's not the marine tech vs the house tech. Dry air home systems don't have the higher duty cycle nor poor quality water cool condensers. Amazing they work as well as they do.
The marine tech knows this and hates loosing his shorts on piece work.
Usually a gamble if he gets paid at all. Then he has to eat the warranty if piece it together does not work, where again, he usually does not get paid.
So don't beat up the marine AC guy if he is reluctant to work on this stuff,,, he rarely makes a profit.
Been here, lost my shorts before..

And before I get blasted by the folks that just replaced their compressor and it worked,,, Well good for you..
Go make a living on it..

Over the years I ve had a bunch of compressors replaced and never had an issue. The tech just has to flush the system. Even with a new condenser you re not going to replace the evap or the copper lines to the evap anyway.

Well good for you..
Please re read my whole post. Yes, we flushed also.

Well… between 2013 and 2017, I had 4 compressors replaced on my 53 and 6 on a boat I used to run (same 70 Johnson as the OP). None of them failed again. Since 2017 both my personal 53 and the boats I ve run used chillers so far fewer issues

maybe I m just very lucky.

The worst part of the job will be pulling the condenser out. On the 70 I ran the four smaller condensers were stacked in the corner. If the bad one was behind, you had to remove both!

i love chillers !!!

I know units are somewhat different but we maintain almost 200 ac units. They last approximately 15 yrs in Florida salty hotness. No difference in new compressor vs rebuilt. Key for all ac work is flush and dry .
Now if you want to get me all stirred up let's talk about aluminum coils.

I ve never had a marine compressor last 15 years. The old blue cruisairs of the 80s yes… 25 years. Not the new stuff.

This is my perspective. It's the right fix for the time and place. Make the fix, place the order for the replacement system when you can, and while you can afford to wait for it to be built and delivered.