| New Roof AC/Heat pump, recommendations [message #310322] |
Mon, 14 November 2016 02:38  |
 |
Loffen
Messages: 1087
Registered: August 2013
Location: Norway
Karma: 1
|
Senior Member |
|
|
I am on my way to buy a new roof mounted AC/Heat pump and have been looking at the Coleman Mach 8 low profile unit, but there is several other from Dometic and so on, any recommendations ?
1973 23' # 1848 Sky Blue Glacier called Baby Blue and a 1973 26'-3 # 1460 Parrot green Seqouia Known as the Big Green,
And sold my 1973 26'-2 # 581 White Canyon lands under the name Dobbelt trøbbel
in Norway
|
|
|
|
|
|
| Re: New Roof AC/Heat pump, recommendations [message #310332 is a reply to message #310322] |
Mon, 14 November 2016 08:01  |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
|
Senior Member |
|
|
My Dometic failed the switch ($35) in just over a year. I replaced it with a cheaper switch and a heat/cool selector. Works fine as far as cooling/heating but I'd go elsewhere because of the failure.
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
|
|
|
|
|
|
|
|
|
|
| Re: New Roof AC/Heat pump, recommendations [message #310352 is a reply to message #310341] |
Mon, 14 November 2016 20:14 |
tphipps
Messages: 3005
Registered: August 2004
Location: Spanish Fort, AL
Karma: 9
|
Senior Member |
|
|
Heat strips are barely worth the trouble to install (easy) or the price ($100 or so). Cube heaters put out more btu's per $ spent. I have one in each of my a/c's - noise level is high. IMHO not worth it.
Tom, MS II
2012 Phoenix Cruiser model 2552
KA4CSG
|
|
|
|
|
|
| Re: New Roof AC/Heat pump, recommendations [message #310360 is a reply to message #310322] |
Mon, 14 November 2016 22:32 |
Scott Nutter
Messages: 782
Registered: January 2015
Location: Houston/San Diego
Karma: 4
|
Senior Member |
|
|
Loffen,
I have a 15k Coleman Mach low profile in the back (without the heat pump).
And a Atwood 15k upfront with the heat pump (higher profile).
The Atwood beats the Coleman in any possible test. I wish I would of also put the Atwood in the back.
The Coleman is at least 35% louder than the Atwood in the inside of the coach, and the Coleman will not cool to the temps that the Atwood will.
The Atwood will cool to at least 35* F below the outside air temp. The Coleman will only cool to 25*F below outside air temp.
Maybe I have a defective Coleman??
Good luck, and keep us posted on your decision.. scott
Scott Nutter
1978 Royale Center Kitchen, Patterson 455, switch pitch tranny, 3.21 final drive, Quad bags, Dave Lenzi super duty mid axle disc brakes, tankless water heater, everything Lenzi. Alex Ferrera installed MSD Atomic EFI
Houston, Texas
|
|
|
|
|
|
|
|
| Re: New Roof AC/Heat pump, recommendations [message #310373 is a reply to message #310322] |
Tue, 15 November 2016 08:18 |
jhbridges
Messages: 8412
Registered: May 2011
Location: Braselton ga
Karma: -74
|
Senior Member |
|
|
Remember, the Cometic has a 40 degree thermostat which shuts it off. It's not going to run below that ambient temperature... and it's not efficient enough to provide heat below that anyway. 40F, ~~4 C
--johnny
Foolish Carriage, 76 26' Eleganza(?) with beaucoup mods and add - ons.
Braselton, Ga.
I forgive them all, save those who hurt the dogs. They must answer to me in hell
|
|
|
|
| Re: [GMCnet] New Roof AC/Heat pump, recommendations [message #310374 is a reply to message #310367] |
Tue, 15 November 2016 08:14 |
k2gkk
Messages: 4452
Registered: November 2009
Karma: -8
|
Senior Member |
|
|
Air-based heat pumps generally don't work very well when ambient air temperatures go below 40 degrees F.
Water-based heat pumps used on boats also don't do well when water temps go below the same point.
Previous owner of my coach removed the furnace; probably because temps in south Texas don't usually go very low.
As others have commented, electric blankets, sheets, or mattress pads work VERY well for sleeping and electric cube heaters and similar can take cabin temperatures to tolerable levels. Think flannel shirts and sweaters!
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
~~ ~ D C "Mac" Macdonald ~ ~~
~ ~ Amateur Radio - K2GKK ~ ~
~ ~ Since 30 November '53 ~ ~
~ ~ USAF and FAA, Retired ~ ~
~ Member GMCMI and Classics ~
~ ~ ~ Oklahoma City, OK ~ ~ ~
~~ ~ ~ "The Money Pit" ~ ~ ~~
~ ~ ~ ~ TZE166V101966 ~ ~ ~ ~
~ ~ ~ '76 ex-Palm Beach ~ ~ ~
~~ k2gkk + hotmail dot com ~~
~ www.gmcmhphotos.com/okclb ~
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
______________
|[ ]~~~[][ ][]\
"--OO--[]---O-"
________________________________
From: Gmclist on behalf of Espen Heitmann
Sent: Tuesday, November 15, 2016 05:54
To: gmclist@list.gmcnet.org
Subject: Re: [GMCnet] New Roof AC/Heat pump, recommendations
John Sharpe wrote on Tue, 15 November 2016 05:09
> Loffen, I would think that the current draw of using a heat pump and heat strip at the same time would exceed the breaker rating.
I do not think the heat pump and the heat strip will be on at the same time, I guess when it get down to the point where it is to cold for the heat
pump the heat strip will take over
--
1973 26'-3 # 1460 Parrot green Seqouia Known as the Big Mean Green Machine,
And just sold my 1973 26'-2 # 581 White Canyon lands under the name Dobbelt trøbbel
in Norway
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
|
|
|
|
|
|
| Re: New Roof AC/Heat pump, recommendations [message #310377 is a reply to message #310322] |
Tue, 15 November 2016 09:47 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
|
Senior Member |
|
|
That seems about right for the price. Make sure you get top and bottom parts.
Dont get too excited about the remote. And the flip down controls. It is easy to operate without, i never use the remote, and the flip down is hard to flip down.
But i a very happy with my atwood. It does push some air volume and cools very well. I have set the heat side temp at 70 and it maintains the coach is almost all normal weather i camp in.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
|
|
|
|
| Re: New Roof AC/Heat pump, recommendations [message #310378 is a reply to message #310322] |
Tue, 15 November 2016 10:00 |
timthenomad
Messages: 63
Registered: June 2015
Location: Austin, TX
Karma: 5
|
Member |
|
|
I too have been researching a new A/C (without heat pump). I haven't purchased yet, but after reading a ton of reviews, other RV forums etc people seem to pretty positive about the 15k Atwood and that is likely to be my choice.
The reason I'm posting though is that I was curious about the Dometic Blizzard. And was wondering if anybody had any firsthand knowledge of it and could chime in. (I guess informed second hand would be fine).
http://www.dometic.com/USA/New-Products/New-RV-Products/blizzard-nxt/
Looks to be a fairly new model I couldn't find any reviews that didn't appear to be machine made. Certainly looks sexy.
Tim Taylor
Austin TX
Philadelphia PA
76 Birchaven (SB)
76 Triumph TR6
|
|
|
|
|
|
| Re: [GMCnet] New Roof AC/Heat pump, recommendations [message #310386 is a reply to message #310377] |
Tue, 15 November 2016 11:59 |
 |
ljdavick
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
|
Senior Member |
|
|
I have the Atwood too and am now sentimental for the big knobs on my old AC. Too hard to see!
Larry Davick
> On Nov 15, 2016, at 7:47 AM, Jon Roche wrote:
>
> That seems about right for the price. Make sure you get top and bottom parts.
>
> Dont get too excited about the remote. And the flip down controls. It is easy to operate without, i never use the remote, and the flip down is
> hard to flip down.
>
> But i a very happy with my atwood. It does push some air volume and cools very well. I have set the heat side temp at 70 and it maintains the
> coach is almost all normal weather i camp in.
> --
> Jon Roche
> 75 palm beach
> St. Cloud, MN
> http://lqqkatjon.blogspot.com/
>
> _______________________________________________
> GMCnet mailing list
> Unsubscribe or Change List Options:
> http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
_______________________________________________
GMCnet mailing list
Unsubscribe or Change List Options:
http://list.gmcnet.org/mailman/listinfo/gmclist_list.gmcnet.org
Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
|
|
|
|
| Re: New Roof AC/Heat pump, recommendations [message #310388 is a reply to message #310322] |
Tue, 15 November 2016 12:46 |
 |
SteveW
Messages: 538
Registered: June 2005
Location: Southern California - Ora...
Karma: 1
|
Senior Member |
|
|
I've got the low profile Coleman (heat pump 15K version) and am happy enough with it's performance...
I've read postings on other forums about a remedy for the noise issue - it involves changing out the fan blade. Actually though - I'm not sure if that addresses outside or inside noise.
I'm considering modifying it to a ducted system. I'd build a small plenum at the top of the ceiling where I already have a box light fixture there from PO. It'd also call for an alternative ceiling/inside unit and a thermostat. I also expect that it'd get quiter as the noise is air flow noise...
Steve W
1973 23'
Southern California
Steve W
1973 : 23'
Southern California
[Updated on: Tue, 15 November 2016 12:48] Report message to a moderator |
|
|
|
| Re: New Roof AC/Heat pump, recommendations [message #310393 is a reply to message #310378] |
Tue, 15 November 2016 14:45 |
lqqkatjon
Messages: 2324
Registered: October 2010
Location: St. Cloud, MN
Karma: 5
|
Senior Member |
|
|
Interesting. This is the first tine aeeing that blizzard by dometic. I do not like the dometics we installed in our fiber trailers last year at all. They are junk in my opinion.
This blizzard is new and maybe they got it right?? I know the dometic uses two fans to keep power and sound down, that blizzaed is still a one fan model.
There is alot of buying/selling of rv manufactures so who knows who owns who and who is developing what. I tjought atwood was bought by donetic but still have seen there products on the market unchanged from my atwood i bought a few years ago. It was a new model then. Always changing.
Jon Roche
75 palm beach
EBL EFI, manny headers, Micro Level, rebuilt most of coach now.
St. Cloud, MN
http://lqqkatjon.blogspot.com/
|
|
|
|
GMCforum
Search
Help
Register
Login
Home
