A/C is quitting - what to do? What/where to buy?

I'd go with the 15,000 BTU for the little bit of money difference..

What is the difference between single zone and multi zone? My current one blows into my kitchen but also has multiple ducts that take the air into 5 more spots.

Also I chose the other one bc I think its the exact one that I have. Will installation still be as easy going from that one to this one?
 
For one reason or another I seem to be overly biased towards my own recommendations :cowboy: so I will emphasize what\why I suggest you follow my recommendations prior to purchasing a new A/C for your RV.

Many RV air conditioners do not have a "Freeze Protection" sensor (especially older units) and as long as the air flow is good and the air not too humid, no icing problems would occur. However, A/C's still froze up and certain installations (ducted for example) caused the icing problem to become even worse so the solution from the A/C manufactures was a simple solution which was to install a temperature probe into the "cold" (evaporator) coils and automatically turn off the compressor (leaving the blower fan on) until the ice has melted away (which increases the air flow as well) and then turn back on the compressor. What you should note when it is working correctly is that the blower fan continues to run and the compressor will cycle on and off, turning itself off whenever icing is detected (even if the RV interior has not reached the thermostats set point). (btw, A/C fan speed should be on HIGH especially during icing conditions (high humidity locations for sure) and the fan should be set to "ON" instead of "AUTO").

In any case, while there are certainly reasons such as low air flow and low refrigerant that can cause the coils to freeze, the point many are missing here is even if low refrigerant is the root cause of the icing (which I highly suspect is not the case here), none of those reasons account for the fact that icing should still not occur with this unit because as any icing occurs the A/C compressor (which makes the cold) will turn off prior to icing over the coils very much at all "IF" the freeze protect thermistor and control is actually working.

Recommendations:

I highly recommend replacing the "Freeze Control Sensor" as it is a common part and when it goes out the problem you are having is common. Also it is much less costly at only $10 and night and day easier to install than a new A/C. I will also add that any A/C that has a freeze control circuit, and the A/C is freezing up, then I would suggest that the failure is with the freeze control system that is supposed to prevent the freezing (regardless of any contributing causes to the freezing). ~CA

I have very high confidence this the correct replacement part you need and I also have high but a little lower confidence that this will fully resolve the issue as you could have other issues as well, although other issues would be less likely. I would still take the time to protect the exposed wire, clean the coils (both), and inspect everything visually as well as possible. (also to add, you can test the sensor with an electrical meter which I would commonly suggest but I don't know if you have an ohm meter or know how to test it and in addition, simply replacing sensor is likely needed anyway and again can be done relatively easily and for a very low cost.

Interested in your opinion on the above ac as well
 
Be su
Frost King foaming cleaner

Be sure to watch some YT videos on cleaning. Very helpful.
Also don't make the same mistake I made. Stuff a big towel into the plenum that goes thru the roof to keep water from getting into the inside.
 
What is the difference between single zone and multi zone? My current one blows into my kitchen but also has multiple ducts that take the air into 5 more spots.

Also I chose the other one bc I think its the exact one that I have. Will installation still be as easy going from that one to this one?
Your rig is a single zone with a ducted system and I assume with a wall thermostat. That is the info you need so it comes with the right control box. I think you ceiling assembly is universal for all Dometic ducted. Ask to be sure.
 
Interested in your opinion on the above ac as well
Other than Dometic being trusted (for the most part) for manufacturing quality products, I don't really have an opinion on any particular model.

I would verify prior to purchase if the one you are thinking about purchasing would be a drop in replacement for what you already have, which I highly suspect would be the case (as Grumpy stated), but double checking is prudent imo. ~CA
 
Other than Dometic being trusted (for the most part) for manufacturing quality products, I don't really have an opinion on any particular model.

I would verify prior to purchase if the one you are thinking about purchasing would be a drop in replacement for what you already have, which I highly suspect would be the case (as Grumpy stated), but double checking is prudent imo. ~CA
How do I go about double checking that? Is there a list of compatible replacement acs or
 
I chatted with someone from Dometic. The first is the model I currently have and I think the 2nd one they said would work is the one that Grumpy said.
 

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I guess the only question I have left is if those extra BTUs will pull a significant amount of more power from the breaker causing problems?
 
I guess the only question I have left is if those extra BTUs will pull a significant amount of more power from the breaker causing problems?

Check your A/C Breaker rating. It should be a 20 Amp Breaker which is fine for both a 13.5 or a 15K BTU air conditioner. The only thought I have related to pulling more power is if you use a generator that is just barely able to run the 13.5 A/C, it may not be able to start a 15K btu A/C. ~CA
 
Cleaning the coils didn't help, but it was worth a shot and I'll be able to better take care of this new ac.

Thought I was done with questions, but I went to order the new one and this is probably a dumb question, but I dont need a thermostat if my current one is working (only thing I can think of is if it would make installation easier bc of new connections/etc)? Also do I need the new air grill?
 
No. I installed many over the years. All you have to do is mail the warranty card in. The hardest part of the job is getting in on the roof and the old one off..
My odd joy in life is pushing heavy thing off of high places. If this were my problem, yes getting that AC TO the roof is a task, but the old one coming down? I'd call myself expert on the job. :thumbsup:

I have a dream: my last day of work before retirement, pushing a fully loaded nurses med cart off the back loading dock, at the highest speed I can muster. :roflblack:

The only heavy thing I do not want falling down from a high place is my own body. :freak:
 
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Be su


Be sure to watch some YT videos on cleaning. Very helpful.
Also don't make the same mistake I made. Stuff a big towel into the plenum that goes thru the roof to keep water from getting into the inside.
and I will ask, since the sounds like a reasonable step, why is the towel a mistake?
 
Ok so my friend and I got this ac installed 24 hrs ago. It is 90 in WPB today but the thing is running non stop and doesn't seem to be blowing as cold as it should be. I used all the previous connections and it was as easy as everyone said. By far the hardest part was getting the new unit on the roof.

Anyway, my question now is what issues could possibly left. I'm pretty much down to it being a wiring issue (which would be strange right?) Or thermostat. Would a faulty thermostat do this? I'm thinking of ordering a new one just to see. Will that be as easy as unplug one and plug in the other?

I will note that I got on my roof and check out the new ac. The coils weren't frozen. Everything visually looks great.
 
Ok so my friend and I got this ac installed 24 hrs ago. It is 90 in WPB today but the thing is running non stop and doesn't seem to be blowing as cold as it should be. I used all the previous connections and it was as easy as everyone said. By far the hardest part was getting the new unit on the roof.

Anyway, my question now is what issues could possibly left. I'm pretty much down to it being a wiring issue (which would be strange right?) Or thermostat. Would a faulty thermostat do this? I'm thinking of ordering a new one just to see. Will that be as easy as unplug one and plug in the other?

I will note that I got on my roof and check out the new ac. The coils weren't frozen. Everything visually looks great.
Make sure your thermostat is in auto mode. In auto mode it's like your thermostat in your house and does not run constantly and it cycles.
 
Ok so my friend and I got this ac installed 24 hrs ago. It is 90 in WPB today but the thing is running non stop and doesn't seem to be blowing as cold as it should be.
Very doubtful it is a wiring issue. It will continue to run until it meets the temp you have set. Raise the thermostat and see if it shuts down. You didn't say if you did that.
 
Very doubtful it is a wiring issue. It will continue to run until it meets the temp you have set. Raise the thermostat and see if it shuts down. You didn't say if you did that.

It does at a much higher temperature. I can put it on 80 and have it shut down. Before I never had a problem with it starting and stopping at 76 but it doesnt seem to be able to get that low.
 
My odd joy in life is pushing heavy thing off of high places. If this were my problem, yes getting that AC TO the roof is a task, but the old one coming down? I'd ca

Late to the party here - but when mine needed replacing, I used an aluminum extension ladder as an inclined plane. And towed the new unit up. More setup work but so much easier than lifting the beast.

And - yeah - pushing the old one off was especially satisfying. :)
 

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