| Roof Top Air Conditioners [message #63545] |
Mon, 09 November 2009 07:32  |
Rick Williams
Messages: 256
Registered: July 2004
Karma: 0
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As of January 1st 2010, all rv air conditioners as well as residential will be required by law to convert from R22 to an "environmentally friendly" refrigerant.
Dometic claims a total redesign of their air conditioners and Carrier claims something less than that.
Replacing the original still functioning Duo Therm "shaker" has not reached the top of my improvement list. But maybe it just did.
Carrier said they will still offer the low profile 15k unit with no price increase.
Given the past track record with automotive refrigerant changes, I have to wonder if the new ones will perform as well.
Rick
Rick Williams
Bliss, Michigan
1978 Eleganza II
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| Re: [GMCnet] Roof Top Air Conditioners [message #63546 is a reply to message #63545] |
Mon, 09 November 2009 07:42  |
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USAussie
Messages: 15912
Registered: July 2007
Location: Sydney, Australia
Karma: 6
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Senior Member |
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Rick,
Emery Stora made a presentation at Pueblo regarding air conditioning. He
noted that DuraCool was environmentally friendly.
If you are a member of GMCMI log in to the Members Only section and then go
to the technical handout section and check out his presentation.
I GA RON TEE you will learn the basics of a/c operation and all you ever
wanted to know about refrigerants!
Regards,
Rob Mueller
Sydney, Australia
AUS '75 Avion-The Blue Streak TZE365V100428
USA '75 Avion-Double Trouble TZE365V100426
-----Original Message-----
From: gmclist-bounces@temp.gmcnet.org
[mailto:gmclist-bounces@temp.gmcnet.org] On Behalf Of Rick Williams
Sent: Tuesday, 10 November 2009 12:32 AM
To: gmclist@temp.gmcnet.org
Subject: [GMCnet] Roof Top Air Conditioners
As of January 1st 2010, all rv air conditioners as well as residential will
be required by law to convert from R22 to an "environmentally friendly"
refrigerant.
Dometic claims a total redesign of their air conditioners and Carrier claims
something less than that.
Replacing the original still functioning Duo Therm "shaker" has not reached
the top of my improvement list. But maybe it just did.
Carrier said they will still offer the low profile 15k unit with no price
increase.
Given the past track record with automotive refrigerant changes, I have to
wonder if the new ones will perform as well.
Rick
--
Rick Williams
Gladstone, Michigan
1978 Eleganza II
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Regards,
Rob M. (USAussie)
The Pedantic Mechanic
Sydney, Australia
'75 Avion - AUS - The Blue Streak TZE365V100428
'75 Avion - USA - Double Trouble TZE365V100426
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| Re: [GMCnet] Roof Top Air Conditioners [message #63568 is a reply to message #63545] |
Mon, 09 November 2009 11:12 |
powerjon
Messages: 2446
Registered: January 2004
Karma: 5
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Senior Member |
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Rick,
That applies to only new manufactured units for both residential,
commercial and automotive/RV to use an "environmentally sound"
refrigerant and not to the existing installed base. R-22 production
is not scheduled for 99.5% reduction until 2020 and will still be
available to service existing equipment. The material with the most
testing by Carrier is R-410A know trade name as "Puron". However
there are a number of other replacement for R-22 such as Duracool
-22A. The phase out will just increase the cost of R-22 until the
elimination date.
Here is the EPA HCFC Phaseout Schedule:
http://www.epa.gov/ozone/title6/phaseout/hcfc.html
So no need to go out and buy something new if your old unit is working
just fine. There is no cash for clunker for this stuff.
J.R. Wright
On Nov 9, 2009, at 8:32 AM, Rick Williams wrote:
>
>
> As of January 1st 2010, all rv air conditioners as well as
> residential will be required by law to convert from R22 to an
> "environmentally friendly" refrigerant.
> Dometic claims a total redesign of their air conditioners and
> Carrier claims something less than that.
> Replacing the original still functioning Duo Therm "shaker" has not
> reached the top of my improvement list. But maybe it just did.
> Carrier said they will still offer the low profile 15k unit with no
> price increase.
> Given the past track record with automotive refrigerant changes, I
> have to wonder if the new ones will perform as well.
>
> Rick
_______________________________________________
GMCnet mailing list
List Information and Subscription Options:
http://temp.gmcnet.org/cgi-bin/mailman/listinfo/gmclist
J.R. Wright
GMC GreatLaker
GMC Eastern States
GMCMI
78 30' Buskirk Stretch
75 Avion Under Reconstruction
Michigan
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| Re: Roof Top Air Conditioners [message #63618 is a reply to message #63545] |
Mon, 09 November 2009 17:51 |
JohnL455
Messages: 4447
Registered: October 2006
Location: Woodstock, IL
Karma: 12
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Senior Member |
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Yes these are hermeticly sealed systems (all metal, soldered no porous rubber hoses, O rings or rotating compressor seals with atmosphere on the other side)so they pretty much are sealed until they leak. In other works if it ain't broke----.
John Lebetski
Woodstock, IL
77 Eleganza II
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| Re: Roof Top Air Conditioners [message #63644 is a reply to message #63545] |
Mon, 09 November 2009 21:28 |
Chr$
Messages: 2690
Registered: January 2004
Location: Scottsdale, AZ
Karma: 1
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Senior Member |
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I'm guessing it will be R410A. I have two R410A units on the house. So far, so good...
They do run higher pressures however. Much higher in August in Phoenix.
Too bad they don't use R134A with a larger evap coil. I think that would give us the BTUh capacity we really need to cool these things.
My roof Air's will soldier on until I determine a Mini Split is in order. Lots of other things to spend $$ on right now.
-Chr$: Perpetual SmartAss
Scottsdale, AZ
77 Ex-Kingsley 455 SOLD!
2010 Nomad 24 Ft TT 390W PV W/MPPT, EV4010 and custom cargo door.
Photosite: Chrisc GMC:"It has Begun" TT: "The Other Woman"
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