Is there an Air Conditioner using Inverter Compressor

Here are a few battery powered air conditioners. Fairly pricey.

https://www.nomadiccooling.com/?gclid=Cj0KCQjw4PKTBhD8ARIsAHChzRI3SRbre56BRTRN3t54f5dHLaKSO1GMjaSCR2eba9xZzSOgYyTqhv0aAtbXEALw_wcB

Peter_Crowl wrote:
I love the split systems that I have in my home.
Now that I have the roof on my 2000 Bounder 34T cleared for recovering I'm wondering if anybody makes an inverter system unit for RV's.

There are some 12VDC or 24VDC A/C systems designed for trucks, but nothing in the RV specific market.

Some people have taken residential mini-split systems which do use inverter powered compressors and installed on RV. Not sure how well they would handle all of the bouncing around.

If you are a HVAC person, it would not be difficult to build your own. All of the parts are readily available.

You can of course run an A/C off of an inverter if you have a large enough one and sufficient battery power.

The big win on 12VDC compressors is that they actually use 3 phase AC motors. 3 phase motors are much more energy efficient than straight DC or single phase AC.

There are ceiling cassette vents used with some split units in place of the more common wall mounted. The highest SEER rating seems to be 240v units.

You lost me at ductless. Mini splits are great for rooms or garages but when trying to cool an entire RV with different rooms I think they lose some appeal - at least for me. If I were doing a Sprinter conversion I would definitely consider it.

Peter_Crowl wrote:

No - one with an inverter compressor as used in a ductless split system. They are much more efficient. Rather than the compressor running on a start/stop basis - with the startups drawing the most current of the entire operation - they're a DC system that throttles the speed of the compressor to match the load. My residential units could run on the smallest Harbor Freight generator they offer.

I've not seen an RV specific unit but in Kuwait, I've seen residential units mounted on the rear bumper. If you have room, you could put it on the A-frame at the front of the trailer.

I assume the trick would be finding a wall with no obstructions to mount the interior part of the unit. Running the lines between should be fairly straight forward.

I do like the idea of one less hole in the roof.

Some talk of running AC off a generator. Most suggest engine rotation spin coils to make 120V which spins coils to pump refrigerant. Others engine rotation spin coils to make 12V which spins coils to pump refrigerant. Why does nobody in the RV world even think about engine rotation pump refrigerant?

CA Traveler wrote:
If you mean one that runs on 12V DC inverted to 120V AC that would be rather inefficient vs a DC motor or just a AC motor.

A 120V 10A AC draw for a air conditioner would draw about 110A DC which would among other things require very large wires to the roof.

No - one with an inverter compressor as used in a ductless split system. They are much more efficient. Rather than the compressor running on a start/stop basis - with the startups drawing the most current of the entire operation - they're a DC system that throttles the speed of the compressor to match the load. My residential units could run on the smallest Harbor Freight generator they offer.

If you mean one that runs on 12V DC inverted to 120V AC that would be rather inefficient vs a DC motor or just a AC motor.

A 120V 10A AC draw for a air conditioner would draw about 110A DC which would among other things require very large wires to the roof.