Reply
 
Thread Tools Display Modes
 
Old 03-23-2019, 03:18 AM   #21
Platinum Member
 
Davydd's Avatar
 
Join Date: Aug 2007
Location: Minnesota
Posts: 4,591
Default

Quote:
Originally Posted by avanti View Post
BTW: is it as quiet as everybody says?
Yes. I have heard several demonstrations including one in a Promaster chassis at last year's B-Rally and a few in ARVs. They have a video demonstrating the difference but hearing the actual is believing.
__________________

__________________
Davydd
2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter
Davydd is offline   Reply With Quote
Old 03-23-2019, 03:27 AM   #22
Platinum Member
 
Join Date: Jul 2012
Posts: 2,243
Default

Quote:
Originally Posted by avanti View Post
BTW: is it as quiet as everybody says?
Much quieter than the Coleman Mach 8 it replaced...
__________________

gregmchugh is offline   Reply With Quote
Old 03-23-2019, 03:28 AM   #23
Platinum Member
 
Join Date: Jul 2012
Posts: 2,243
Default

Quote:
Originally Posted by avanti View Post
Does anybody know how ARV dealt with the 240VAC->120VAC issue with the Houghton? Did they get them to build a 120VAC version? Or, are they using some kind of voltage converter?
It is a 120v version
gregmchugh is offline   Reply With Quote
Old 03-23-2019, 03:22 PM   #24
Platinum Member
 
Phoebe3's Avatar
 
Join Date: May 2017
Location: California
Posts: 674
Default

Quote:
Originally Posted by AAFD View Post
Coachmen and Advanced RV are both using 12 volt DC AC in they're rigs. I was looking for some feed back on how well they worked.
I hang out in the Crossfit FB group. At this time, only a couple of members have the 12V ProAir units and they haven't had them during the summer (the 12V AC units are a new offering) so there haven't been any real-world reports detailing performance yet.

I believe they are going to become standard on the Galleria and are provided as an option for special builds of the Crossfit/Beyond. Current option price on a Crossfit/Beyond is about $3,600.
__________________
2018 Coachmen Crossfit/Beyond
Phoebe3 is offline   Reply With Quote
Old 03-24-2019, 11:58 PM   #25
New Member
 
Join Date: Feb 2019
Location: Oklahoma
Posts: 4
Default

I have a 2019 Coachmen Galleria with the Pro Air 12V 20,000 BTU Air Conditioner. I am very happy with it. Going across Louisiana couple days ago, I started at 14.1v AGM house battery, after 9 hours driving battery was 13.3v. Also running 12v refrig. Outside air temp 77-80. No generator running at all but does have 300w solar. Teenagers happy in back and cool. Going down the highway it's very quiet. In front of my house(or campground) it has a different tone but for sure no worse than a Dometic, just different. Everyone is curious how long a full battery will last while boondocking with AGM or Lithium package. I haven't done and I don't know. 12v a/c and refrig and Truma heat/hot water are a must nowadays!! All JMHO.
__________________
2019 Coachmen Galleria 24Q
Flatlander1 is offline   Reply With Quote
Old 03-25-2019, 04:21 PM   #26
New Member
 
Join Date: Feb 2018
Location: Michigan
Posts: 16
Default

Quote:
Originally Posted by Flatlander1 View Post
I have a 2019 Coachmen Galleria with the Pro Air 12V 20,000 BTU Air Conditioner. I am very happy with it. Going across Louisiana couple days ago, I started at 14.1v AGM house battery, after 9 hours driving battery was 13.3v. Also running 12v refrig. Outside air temp 77-80. No generator running at all but does have 300w solar. Teenagers happy in back and cool. Going down the highway it's very quiet. In front of my house(or campground) it has a different tone but for sure no worse than a Dometic, just different. Everyone is curious how long a full battery will last while boondocking with AGM or Lithium package. I haven't done and I don't know. 12v a/c and refrig and Truma heat/hot water are a must nowadays!! All JMHO.
Thank you, if you come up with answers please post

KC
AAFD is offline   Reply With Quote
Old 03-28-2019, 06:37 PM   #27
Bronze Member
 
Join Date: Mar 2019
Location: San ?Jose
Posts: 39
Default

DC will never be as good as AC for air conditioning. The efficiency of an inverter is better than the reduced efficiency of a DC compressor. AC compressor motors are great, why change it?

They just do this for marketing to get people excited about not needing an inverter for air conditioning.
chris_g19 is offline   Reply With Quote
Old 03-28-2019, 07:16 PM   #28
Site Team
 
avanti's Avatar
 
Join Date: Jul 2013
Posts: 3,391
Default

Quote:
Originally Posted by chris_g19 View Post
DC will never be as good as AC for air conditioning. The efficiency of an inverter is better than the reduced efficiency of a DC compressor. AC compressor motors are great, why change it?

They just do this for marketing to get people excited about not needing an inverter for air conditioning.
Well, modern DC compressors (such as the beloved Danfoss) have external controllers that convert DC power to multi-phase AC that is fed to sealed synchronous motors. This is done to avoid having brushes (which generate dirt and wear out) sealed inside the compressor. If you start with AC, it is first converted to DC, as needed by said controller.

I suspect that the efficiency of these controllers is on par with the efficiency of an inverter. Indeed, it is probably higher, since it is tuned precisely for the needed load.
__________________
Formerly: 2005 Airstream Interstate (Sprinter 2500 T1N)
Now!: 2014 Great West Vans Legend SE (Sprinter 3500 NCV3 I4)
avanti is online now   Reply With Quote
Old 03-28-2019, 07:25 PM   #29
Platinum Member
 
GeorgeRa's Avatar
 
Join Date: Feb 2016
Location: Portland, Oregon
Posts: 1,485
Default

Quote:
Originally Posted by avanti View Post
…………………………..
I suspect that the efficiency of these controllers is on par with the efficiency of an inverter. Indeed, it is probably higher, since it is tuned precisely for the needed load.
I suspect that the efficiency of these controllers is on par with the efficiency of an inverter. Indeed, it is probably higher, since it is tuned precisely for the needed load.
Efficiency of Inverter AC is higher indeed. “The biggest difference between inverter and non-inverter AC is the fact that the motor of the inverter compressor has a variable speed. ... A censor in the invertor adjusts the power according to the temperature in the room, lowering the electrical consumption and saving energy.Apr 22, 2016”

https://www.google.com/search?rlz=1C...30.GbkL7TixHOo

After replacing the capillary temperature probe thermostat (on or off only) on my Danfoss fridge to the electronic thermostat efficiency went up and noise went down.
GeorgeRa is offline   Reply With Quote
Old 03-29-2019, 01:33 AM   #30
Bronze Member
 
Join Date: Nov 2018
Location: AZ
Posts: 20
Default

A dealer that sells Advance, and Coachmen did a test on noise levels, he also stated the 12 volt A/C runs an extra 2 hours on Lithium then the standard dometic A/C....
Coachmen Crossfit came in quieter than the $250K + Advance RV
Attached Images
File Type: jpg Coachmen 20K BTU 12 Volt.jpg (114.1 KB, 40 views)
B-RV is offline   Reply With Quote
Old 03-29-2019, 02:04 AM   #31
Platinum Member
 
GeorgeRa's Avatar
 
Join Date: Feb 2016
Location: Portland, Oregon
Posts: 1,485
Default

Quote:
Originally Posted by B-RV View Post
A dealer that sells Advance, and Coachmen did a test on noise levels, he also stated the 12 volt A/C runs an extra 2 hours on Lithium then the standard dometic A/C....
Coachmen Crossfit came in quieter than the $250K + Advance RV
I didn’t find any info if these units have variable speed compressors. If I read it correctly, they can use engine coolant for heating, adding a hydronic furnace will take care all heating needs not just while driving.

The noise difference between these units is dramatic.
GeorgeRa is offline   Reply With Quote
Old 03-29-2019, 02:31 AM   #32
Platinum Member
 
Davydd's Avatar
 
Join Date: Aug 2007
Location: Minnesota
Posts: 4,591
Default

Quote:
Originally Posted by B-RV View Post
A dealer that sells Advance, and Coachmen did a test on noise levels, he also stated the 12 volt A/C runs an extra 2 hours on Lithium then the standard dometic A/C....
Coachmen Crossfit came in quieter than the $250K + Advance RV
Dealers will say anything. What dealer sells Advanced RV? Advanced RV sells direct to owners and takes trade ins on their own builds. In fact, there has only been one Advanced RV out in the wild for a dealer to get ahold of (I asked) and it wasn't one with their new Houghton air conditioner. I think the dealer was blowing smoke up your A--.

If you are comparing the Coachmen 12V air conditioner to a Dometic Mach 8 it will be quieter in all reports.
__________________
Davydd
2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter
Davydd is offline   Reply With Quote
Old 03-29-2019, 02:37 AM   #33
Bronze Member
 
Join Date: Nov 2018
Location: AZ
Posts: 20
Default

Quote:
Originally Posted by Davydd View Post
Dealers will say anything. What dealer sells Advanced RV? Advanced RV sells direct to owners and takes trade ins on their own builds. In fact, there has only been one Advanced RV out in the wild for a dealer to get ahold of (I asked) and it wasn't one with their new Houghton air conditioner. I think the dealer was blowing smoke up your A--.

If you are comparing the Coachmen 12V air conditioner to a Dometic Mach 8 it will be quieter in all reports.
When in doubt, do it yourself, please share your results with us. I have the Li3 with the 20K BTU A/C, quietest A/C i've ever experienced, it even beat out my beloved Newmar!
B-RV is offline   Reply With Quote
Old 03-29-2019, 03:12 AM   #34
Platinum Member
 
Davydd's Avatar
 
Join Date: Aug 2007
Location: Minnesota
Posts: 4,591
Default

Read back. The Advanced RV Houghton air conditioner has already been covered in this thread and one member, Greg McHugh, had Advanced RV install one in his RV that originally had a Dometic Mach 8. Also, I said I heard several demonstrations in Sprinter RVs and one Promaster RV to verify the claim that it was 3 times quieter, IMO, as stated in this video. Greg can expound on it better than me.



__________________
Davydd
2015 Advanced RV Ocean One Mercedes Benz Sprinter
Previous Class Bs:
2011 Great West Van Legend Sprinter
2005 Pleasure-way Plateau TS Sprinter
Davydd is offline   Reply With Quote
Old 03-29-2019, 04:07 AM   #35
Platinum Member
 
Join Date: Jul 2012
Posts: 2,243
Default

Well, that is a Houghton in the picture showing the 3 sound level readings.

I can confirm that the Houghton is much quieter than the Coleman Mach 8 it replaced. At some point the sound level reading is lower but practically not relevant to me, we can easily talk and sleep with the sound level of the Houghton, if it was quieter I guess that would be nice but not very significant in actual usage for us.

Our RV is so well insulated that a High BTU AC does not run the compressor enough to reduce the humidity, the Coleman had this issue. The Houghton has a mode to reduce humidity but I have not tried it yet to see how well it works. We used the regular cooling mode in Florida but the temps were not real high and the humidity was not high (December) so not a good test but we like it so far and avoid high humidity hot areas so not very concerned about that case.

For our RV a lower BTU DC split unit might be ideal, with the extreme insulation we have it would probably get lower power usage and longer runs on battery but still provide enough cooling. A 20k BTU Pro Air would probably not run the compressor enough to reduce the humidity in our case.
gregmchugh is offline   Reply With Quote
Old 04-02-2019, 04:25 PM   #36
Bronze Member
 
Join Date: Jul 2018
Location: Minnesota
Posts: 29
Default

Quote:
Originally Posted by gregmchugh View Post
Well, that is a Houghton in the picture showing the 3 sound level readings.

I can confirm that the Houghton is much quieter than the Coleman Mach 8 it replaced. At some point the sound level reading is lower but practically not relevant to me, we can easily talk and sleep with the sound level of the Houghton, if it was quieter I guess that would be nice but not very significant in actual usage for us.

Our RV is so well insulated that a High BTU AC does not run the compressor enough to reduce the humidity, the Coleman had this issue. The Houghton has a mode to reduce humidity but I have not tried it yet to see how well it works. We used the regular cooling mode in Florida but the temps were not real high and the humidity was not high (December) so not a good test but we like it so far and avoid high humidity hot areas so not very concerned about that case.

For our RV a lower BTU DC split unit might be ideal, with the extreme insulation we have it would probably get lower power usage and longer runs on battery but still provide enough cooling. A 20k BTU Pro Air would probably not run the compressor enough to reduce the humidity in our case.
I'm heartened that there is some innovating going on for these applications.
__________________

Binny is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


» Featured Campgrounds

Reviews provided by

Powered by vBadvanced CMPS v3.2.3

All times are GMT. The time now is 04:41 AM.


Powered by vBulletin® Version 3.8.8 Beta 4
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×