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09-14-2014, 04:27 PM
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#1
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Senior Member
Join Date: Nov 2011
Location: Columbia, SC
Posts: 795
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Alternative to RV AC Unit?
Last week while traveling on business, my hotel room was equipped with a Mitsubishi ductless AC unit that kept the room like a meat locker, but more importantly to me, I could not heat it running. The circulation of air was far superior to anything I have seen. Just beginning to research, but it appears that the primary manufacturers are LG and Mitsubishi. The AC units come with or without heat pumps which means with or without the outside unit. Below are links to ceiling mounted 2.0 ton (24,000 Btu) and 2.5 (30,000 Btu) Mitsubishi’s. They make a wall mounted unit, like my hotel room, but probably not a good fit for a fifth wheel.
https://www.younits.com/pca-a24ka4-c...btu-2-ton.html
https://www.younits.com/pca-a30ka4-c...u-2-5-ton.html
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09-14-2014, 04:44 PM
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#2
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Senior Member
Join Date: Feb 2014
Location: Long Island
Posts: 519
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Standard AC and Heat Pumps both require an outside Condensing Unit.
Started Out With Nothing,
Still Have Most Of It Left!
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09-14-2014, 04:48 PM
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#3
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Senior Member
Join Date: Nov 2011
Location: Columbia, SC
Posts: 795
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Quote:
Originally Posted by jwedell
Standard AC and Heat Pumps both require an outside Condensing Unit.
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Still Have Most Of It Left!
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Unless I am missing something, not these, "cooling only units", Mfg. site
Mitsubishi Electric US, Inc. Cooling & Heating | HVAC
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09-14-2014, 04:50 PM
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#4
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Senior Member
Join Date: Feb 2014
Location: Long Island
Posts: 519
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Alternative to RV AC Unit?
Unless they are different from the ones I installed, you need an outside condenser. These are just the air handlers.
Started Out With Nothing,
Still Have Most Of It Left!
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09-14-2014, 04:52 PM
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#5
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Mod free 5er
Join Date: Mar 2008
Location: Concord, NC
Posts: 24,702
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Quote:
Originally Posted by lgray
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Problem would be the larger ones are 220v. Wouldn't work in an RV.
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09-14-2014, 04:55 PM
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#6
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Senior Member
Join Date: Feb 2014
Location: Long Island
Posts: 519
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This is an example of a ductless system. The condenser, air handler and thermostat. You supply the copper lines.
Started Out With Nothing,
Still Have Most Of It Left!
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09-14-2014, 04:55 PM
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#7
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Senior Member
Join Date: Feb 2014
Location: Long Island
Posts: 519
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Quote:
Originally Posted by jwedell
This is an example of a ductless system. The condenser, air handler and thermostat. You supply the copper lines.
Started Out With Nothing,
Still Have Most Of It Left!
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Forgot the picture
Started Out With Nothing,
Still Have Most Of It Left!
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09-14-2014, 05:03 PM
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#8
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Senior Member
Join Date: Nov 2011
Location: Columbia, SC
Posts: 795
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Quote:
Originally Posted by jwedell
Forgot the picture
Attachment 62809
Started Out With Nothing,
Still Have Most Of It Left! |
Thanks, and I did see these combinations, however, website for the "P" series, Mistsubishi site gives you the impression that the outside unit is not necessary. Again, just starting to look and don't need one just yet...they sure are nice...
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09-14-2014, 05:30 PM
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#9
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Senior Member
Join Date: Aug 2011
Posts: 237
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It states indor unit is powred by outdoor unit.
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09-14-2014, 05:31 PM
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#10
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Senior Member
Join Date: Aug 2011
Posts: 237
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How do they remove the hot air and moisture?
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09-14-2014, 05:32 PM
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#11
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Senior Member
Join Date: Feb 2014
Location: Long Island
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The same way a regular AC unit does, only there are no ducts involved.
Started Out With Nothing,
Still Have Most Of It Left!
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09-14-2014, 05:52 PM
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#12
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Senior Member
Join Date: Nov 2011
Location: Columbia, SC
Posts: 795
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Quote:
Originally Posted by jwedell
The same way a regular AC unit does, only there are no ducts involved.
Started Out With Nothing,
Still Have Most Of It Left!
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How portable are these type of units?
In prior thread, it was mentioned that some of the high-end motor coaches having a more residential/central system, I wonder if they are using something like this? Those condensers are pretty small.
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09-14-2014, 05:55 PM
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#13
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Senior Member
Join Date: Feb 2014
Location: Long Island
Posts: 519
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Motorhomes use a unit similar to a window unit. With duct work attached.
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09-14-2014, 05:58 PM
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#14
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Senior Member
Join Date: Feb 2014
Location: Long Island
Posts: 519
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Similar to this
Started Out With Nothing,
Still Have Most Of It Left!
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09-14-2014, 06:02 PM
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#15
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Senior Member
Join Date: Nov 2011
Location: Columbia, SC
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Jwedell,
Thank you for sharing your expertise, even if it dashes my hopes...
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09-14-2014, 06:03 PM
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#16
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Senior Member
Join Date: Feb 2014
Location: Long Island
Posts: 519
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Sorry
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09-14-2014, 06:41 PM
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#17
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Senior Member
Join Date: May 2012
Posts: 1,368
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We have several of those units in our warehouse facility. ...being ductless the disadvantage is the air handler basically manages one room or area only...
They are quite quiet tho and pump out a significant ammount of cold air...
The heat pump function is so/so.....if its REAL cold out it just wont warm the air enough to be comfortable....at least not for us....
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09-14-2014, 06:47 PM
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#18
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Senior Member
Join Date: Jun 2012
Posts: 10,907
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Any heat pump is so/so when it's REAL cold out. That's because there's no heat to pump. Most residential heat pumps switch on electric heating elements when it gets down close to 32 degF.
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09-14-2014, 06:50 PM
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#19
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Senior Member
Join Date: Feb 2014
Location: Long Island
Posts: 519
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We installed heat pumps in a town house complex a while ago. When winter came on Long Island the owners went crazy with $1000.00 per month electric bills.
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09-14-2014, 06:56 PM
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#20
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Senior Member
Join Date: May 2012
Posts: 1,368
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Quote:
Originally Posted by rockfordroo
Any heat pump is so/so when it's REAL cold out. That's because there's no heat to pump. Most residential heat pumps switch on electric heating elements when it gets down close to 32 degF.
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Yes...this exactly...and most residential units HAVE an elect element. ..all of our mitsubishi units dont....so we have to run the big shop furnaces...the ductless units are awesome in auxiliary applications or when pre existing construction negates the installing of ducts...basically they are 2 part window units....that dont require a window...lol...I put one in my garage so i could use it in the summer ..even though its not isulated it will hold 75 most days where as previously it would EASILY hit 120-130 In there on the hottest summer days....
__________________
2015 F350 Platinum Fx4 6.7 Diesel Dually. B&W turnover, B&W Companion, air bags and wireless controller.
2015 Heartland Road Warrior 420 Rt
2012 f250 Fx4 6.7 Diesel crew cab tinted n tuned
2012 lacrosse 318bhs touring- sold
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