Reply
 
Thread Tools Search this Thread Display Modes
 
Old 07-10-2018, 06:18 PM   #1
4 Rivet Member
 
ghaag's Avatar

 
2014 30' FB FC Bunk
2007 25' Safari FB SE
Jonesboro , Arkansas
Join Date: May 2007
Posts: 298
New AC/Heat Pump guidance

I am wanting to install a new 15,000 BTU AC/Heat Pump unit on my 2007 Airstream Safari, has anyone done this recently, if so what would you recommend?
Thanks in advance,
Greg
__________________

ghaag is offline   Reply With Quote
Old 07-12-2018, 11:23 AM   #2
4 Rivet Member
 
ghaag's Avatar

 
2014 30' FB FC Bunk
2007 25' Safari FB SE
Jonesboro , Arkansas
Join Date: May 2007
Posts: 298
For clarification here, what I am trying to figure our is should I go with 13,500 BTU or 15,000 BTU unit.
Thanks!
__________________

ghaag is offline   Reply With Quote
Old 07-12-2018, 12:20 PM   #3
Rivet Master

 
2007 22' International CCD
Corona , California
Join Date: Jul 2013
Posts: 5,465
If you are camping a lot in the hot and humid, or out in the scorching West like I do, 15K BTU will probably be better, IMHO.

What's on the rig now, and how well was it working for you were you have camped?
__________________
Rich, KE4GNK/AE, Overkill Engineering Dude
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.
rmkrum is offline   Reply With Quote
Old 07-12-2018, 01:55 PM   #4
4 Rivet Member
 
ghaag's Avatar

 
2014 30' FB FC Bunk
2007 25' Safari FB SE
Jonesboro , Arkansas
Join Date: May 2007
Posts: 298
Thanks for your feedback! 11,000 BTU is what came on the unit and there are times it is not adequate for our taste.
ghaag is offline   Reply With Quote
Old 07-12-2018, 02:22 PM   #5
Rivet Master

 
2007 22' International CCD
Corona , California
Join Date: Jul 2013
Posts: 5,465
Then a little more to think about. The 13,500 BTU is considerably more powerful than the old 11.000 BTU.

How badly was the 11,000 falling short? Running constantly and not getting cool enough? Or just not getting cool enough?

The issue now is if you go too big in the BTU capability, it will cool down way too fast, shut down, and will not have removed enough humidity for comfort in a humid area.

In a very hot low humidity area, humidity control does not matter much--you want brute force cooling in the SoCal desert where I live.

However, when you live in Alabama, like I did, an over-powered A/C will drop the temperature very rapidly, but it will feel cold and clammy instead of comfortably cool and relatively dry. The unit doesn't suck out the moisture enough.

I keep a temperature/humidity sensor in the rig when we are on the road, so I can detect humidity issues. It seems relative humidity is often more important to comfort than the temperature. Around here, humidity is running 35-40 percent lately, and that feels very steamy to us current desert dwellers... In Alabama, I could NOT get the house to that low a humidity even running two huge AC units almost constantly--it was just that oppressive outside in the summer. I had to do a lot of work to reduce air exchange (and humidity intake) on the house. Got it better, but not ideal.

I'd love for a few other folks with a similar size Airstream to yours to chime in and relate their environment to the size of the Air Conditioner BTU rating and their resulting comfort level. It might be that a 13,500 would be better for you than a 15,500 BTU unit--I'm just not sure how to accurately pick that one, given the humidity where you live...here in the desert, it's usually "go big, or go home"! When we travel back to visit family in Alabama, we typically go in the cooler weather--to the point we need heat at night to be comfortable...
__________________
Rich, KE4GNK/AE, Overkill Engineering Dude
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.
rmkrum is offline   Reply With Quote
Old 07-12-2018, 02:38 PM   #6
2 Rivet Member
 
2016 30' Classic
Victoria , British Columbia
Join Date: Jul 2017
Posts: 20
I would reconsider whether a heat pump model is required. A heat pump is a very complicated (compressor, fan, condenser, evaporator, reversing valve, etc.) method of making warm air, and discharging it into the area of an RV that already contains the warmest air in the unit. And to add to the absurdity, it only generates heat down to around 40F. A small fan driven ceramic heater at floor level will discharge its heat to the area with the coolest room temperature, and will do a much more efficient job of circulating air. I have AC/heat pump combos in both my Mobile Suite fifth wheel and my Airstream and always default to a good quality heater at floor level.
Camr is offline   Reply With Quote
Old 07-12-2018, 02:42 PM   #7
Rivet Master
 
GMFL's Avatar

 
2014 23' International
Dadeville , Alabama
Join Date: Oct 2015
Posts: 1,752
Images: 4
Blog Entries: 14
I just did you 13.5 - 15K swap on our 23D
http://www.airforums.com/forums/f142...ml#post2121062
Feel free to ask me questions.
GMFL is offline   Reply With Quote
Old 07-12-2018, 02:50 PM   #8
Rivet Master
 
GMFL's Avatar

 
2014 23' International
Dadeville , Alabama
Join Date: Oct 2015
Posts: 1,752
Images: 4
Blog Entries: 14
Iím live in the Alabama heat also.
http://www.airforums.com/forums/f142...ml#post2124859
GMFL is offline   Reply With Quote
Old 07-12-2018, 03:00 PM   #9
4 Rivet Member
 
ghaag's Avatar

 
2014 30' FB FC Bunk
2007 25' Safari FB SE
Jonesboro , Arkansas
Join Date: May 2007
Posts: 298
Quote:
Originally Posted by rmkrum View Post
Then a little more to think about. The 13,500 BTU is considerably more powerful than the old 11.000 BTU.

How badly was the 11,000 falling short? Running constantly and not getting cool enough? Or just not getting cool enough?

The issue now is if you go too big in the BTU capability, it will cool down way too fast, shut down, and will not have removed enough humidity for comfort in a humid area.

In a very hot low humidity area, humidity control does not matter much--you want brute force cooling in the SoCal desert where I live.

However, when you live in Alabama, like I did, an over-powered A/C will drop the temperature very rapidly, but it will feel cold and clammy instead of comfortably cool and relatively dry. The unit doesn't suck out the moisture enough.

I keep a temperature/humidity sensor in the rig when we are on the road, so I can detect humidity issues. It seems relative humidity is often more important to comfort than the temperature. Around here, humidity is running 35-40 percent lately, and that feels very steamy to us current desert dwellers... In Alabama, I could NOT get the house to that low a humidity even running two huge AC units almost constantly--it was just that oppressive outside in the summer. I had to do a lot of work to reduce air exchange (and humidity intake) on the house. Got it better, but not ideal.

I'd love for a few other folks with a similar size Airstream to yours to chime in and relate their environment to the size of the Air Conditioner BTU rating and their resulting comfort level. It might be that a 13,500 would be better for you than a 15,500 BTU unit--I'm just not sure how to accurately pick that one, given the humidity where you live...here in the desert, it's usually "go big, or go home"! When we travel back to visit family in Alabama, we typically go in the cooler weather--to the point we need heat at night to be comfortable...
Thank you for the detailed feedback, that has me leaning toward the 13,500.
ghaag is offline   Reply With Quote
Old 07-12-2018, 03:01 PM   #10
4 Rivet Member
 
ghaag's Avatar

 
2014 30' FB FC Bunk
2007 25' Safari FB SE
Jonesboro , Arkansas
Join Date: May 2007
Posts: 298
Quote:
Originally Posted by Camr View Post
I would reconsider whether a heat pump model is required. A heat pump is a very complicated (compressor, fan, condenser, evaporator, reversing valve, etc.) method of making warm air, and discharging it into the area of an RV that already contains the warmest air in the unit. And to add to the absurdity, it only generates heat down to around 40F. A small fan driven ceramic heater at floor level will discharge its heat to the area with the coolest room temperature, and will do a much more efficient job of circulating air. I have AC/heat pump combos in both my Mobile Suite fifth wheel and my Airstream and always default to a good quality heater at floor level.
Thank you for that suggestion, I will definitely give that some thought.
ghaag is offline   Reply With Quote
Old 07-12-2018, 03:02 PM   #11
Rivet Master

 
2007 22' International CCD
Corona , California
Join Date: Jul 2013
Posts: 5,465
Quote:
Originally Posted by Camr View Post
I would reconsider whether a heat pump model is required. A heat pump is a very complicated (compressor, fan, condenser, evaporator, reversing valve, etc.) method of making warm air, and discharging it into the area of an RV that already contains the warmest air in the unit. And to add to the absurdity, it only generates heat down to around 40F. A small fan driven ceramic heater at floor level will discharge its heat to the area with the coolest room temperature, and will do a much more efficient job of circulating air. I have AC/heat pump combos in both my Mobile Suite fifth wheel and my Airstream and always default to a good quality heater at floor level.
Agree on the complications of the heat pump, and the poor performance when it really gets cold. Add that to the thunderous noise you get--just like running the air conditioner side...and it makes little sense to make that much noise and suck that much power to heat an Airstream.

Our A/C system is a simple Air Conditioner, but it has an auxiliary heat strip for providing some heating in cold weather instead of running the compressor and all the accompanying noise you get with a heat pump. If you are hooked to adequate shore power, its nice to have in an emergency. For boondocking--useless!

For serious heating, we have the propane furnace that runs on 12 volt power. If we have shore power, one of the oil-filled 'radiator' style electric heaters works well for us. Especially since we have dogs (and the wall-to-wall dog hair carpet) and the surface temperature of this heater is very low. Either is a lot quieter and simpler that a heat pump.
__________________
Rich, KE4GNK/AE, Overkill Engineering Dude
'The Silver HamShack' ('07 International 22FB CCD 75th Anniversary)
Multiple Yaesu Ham Radios inside and many antennae sprouting from roof, ProPride hitch, Prodigy P2 controller.
2012 shortbed CrewMax 4x4 Toyota Tacoma TV with more antennae on it.
rmkrum is offline   Reply With Quote
Old 07-12-2018, 03:03 PM   #12
Rivet Master
 
GMFL's Avatar

 
2014 23' International
Dadeville , Alabama
Join Date: Oct 2015
Posts: 1,752
Images: 4
Blog Entries: 14
My new 15K in Alabama (which is basically like living underwater) does fine dumping humidity and still runs longer than I would like between cycles.
GMFL is offline   Reply With Quote
Old 07-12-2018, 03:04 PM   #13
4 Rivet Member
 
ghaag's Avatar

 
2014 30' FB FC Bunk
2007 25' Safari FB SE
Jonesboro , Arkansas
Join Date: May 2007
Posts: 298
Quote:
Originally Posted by GMFL View Post
I just did you 13.5 - 15K swap on our 23D
http://www.airforums.com/forums/f142...ml#post2121062
Feel free to ask me questions.
Thank you for the thread, I will have a look.
ghaag is offline   Reply With Quote
Old 07-12-2018, 03:07 PM   #14
4 Rivet Member
 
ghaag's Avatar

 
2014 30' FB FC Bunk
2007 25' Safari FB SE
Jonesboro , Arkansas
Join Date: May 2007
Posts: 298
Quote:
Originally Posted by GMFL View Post
My new 15K in Alabama (which is basically like living underwater) does fine dumping humidity and still runs longer than I would like between cycles.
Thank you for the additional feedback! Where we run into problems most often, is when we cook (which we seem to do a lot of), the current system many times cannot handle the additional heat.
__________________

ghaag is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools Search this Thread
Search this Thread:

Advanced Search
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Heat pump or heat strips? coolwhip40 Furnaces, Heaters, Fireplaces & Air Conditioning 17 05-03-2018 09:27 AM
Using the heat pump/heat strip instead of furnace. crazylev On The Road... 38 10-28-2016 07:58 PM
Heat Pump - Replace with an AC or Heat Pump? A W Warn General Repair Forum 32 10-12-2015 02:18 PM
To heat pump, or not to heat pump, that is the ?? MacDad Furnaces, Heaters, Fireplaces & Air Conditioning 16 09-06-2014 09:58 PM
New AC, Heat Pump or Heat strip? firedog 1990 - 1993 Excella 3 01-22-2010 04:23 PM


Featured Campgrounds

Reviews provided by

Disclaimer:

This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 07:17 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.