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Topic: Roof AC Replacement Recommendations (Read 2827 times) previous topic - next topic

Re: Roof AC Replacement Recommendations

Reply #25 –

My rear roof AC just crapped out a week ago. Compressor runs but no cool. Heat strip in it died years ago. looking at :

TOSOT Conditioner Non Ducted Rooftop High Efficiency

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AKA Chuck
1993 U280 40' WTB, Build 4345, CUM 8.3 "Falcor", 2010 Honda CRV TOAD (Spock), 970W solar on roof
Full-Time traveler between Quartzsite AZ, Longview WA, Ellendale ND, and Lake City SD
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Re: Roof AC Replacement Recommendations

Reply #26 –
That looks like a great option .  The description says minisplit .  So the interior air handler has its own fan pack and the upper unit simply makes compressed gas on its own  .  Great idea and should be lots quieter and more efficient that any of the one piece units.
  Im a little surprised at the power use.    I have found that most of the new units draw less than advertised. 

Re: Roof AC Replacement Recommendations

Reply #27 –
The penguin II has an eer rating of 2.75 compared to 8.5 of this unit so it must use less power.
1999 40 ft. U-320 wtfe build 5563 Chuck & Lynda's "Rollin' Inn"  2030 watts solar
prev. mh's 71 GMC 5 yrs. 73 Pace Setter 1 yr. 78 Vogue 5 yrs 81 FTX 40ft all electric 18 yrs. 1996 Monaco Signature 3 yrs.
2014 Grand Cherokee Overland
Dream as if you will live forever. Live as if you will die today.  James Dean

Re: Roof AC Replacement Recommendations

Reply #28 –
Good find ... that is the same unit as the Eco-Cool, just a different distribution channel (and currently $100 less).  Its made by Gree.
2000 / 36' / U320 / WTFE
WildEBeest / "Striving to put right what once went wrong"

Re: Roof AC Replacement Recommendations

Reply #29 –
Anyone one have any info or experience with Atmos 4.4 A/C heat pump units with soft start. Initial research looks good. Trying to confirm interior plenum cover will work on my ceiling in 2001. Considering these for my coach if they fit.
2001 4010 U320
Build 5875

Re: Roof AC Replacement Recommendations

Reply #30 –
Quote from: Spiderhitch –
Anyone one have any info or experience with Atmos 4.4 A/C heat pump units with soft start. Initial research looks good. Trying to confirm interior plenum cover will work on my ceiling in 2001. Considering these for my coach if they fit.

You might try reaching out to SDG in Elkhart, Indiana on this one.  Some photos in the following thread show an original Dometic interior trim re-used on installs of the Atmos, but it's not clear if those are ducted or non-ducted installations  Atmos 4.4 - Quieter 15k Btu Air Conditioner with Heat Pump | Sprinter-Source.com

Note some of the most recent posts in that thread indicate the Atmos itself does not actually have a soft start.

You'll also need to deal with the thermostat, especially in light of having an AquaHot.
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Roof AC Replacement Recommendations

Reply #31 –
Called SDG yesterday. I actually spoke to owner. It was pretty impressive and he answered a lot of questions. Soft start is available. I am sending pics of interior plenum cover and he said he will be able to tell if their unit will fit. I still have concerns with the thermostat issues and aquahot. Appreciate anyone chiming in with thoughts
2001 4010 U320
Build 5875

Re: Roof AC Replacement Recommendations

Reply #32 –
Curious if you pursued the Atmos further.  It looks a little like the Eco-Cool, but literature shows it to be 1.25" less tall.

https://www.sdgelkhart.com/_files/ugd/3c6d89_2e97e7c5b365493cb122d034a9be061f.pdf
Learn every day, but especially from the experiences of others. It's cheaper!  - John C. Bogle

2000 U320 36' non-slide / WildEBeest Rescue
2003 U320

Re: Roof AC Replacement Recommendations

Reply #33 –

I just installed two (2) Tosot

Quote from: Balcanthez –
My rear roof AC just crapped out a week ago. Compressor runs but no cool. Heat strip in it died years ago. looking at :

TOSOT Conditioner Non Ducted Rooftop High Efficiency

Last Month I installed two (2) of these A/C Heat Pumps on My 1994 U300. Prior to that I had One original "Penguin" in the rear and a New Furrion Chill A/C that I had installed just 9 months ago. The Furrion Chill was by far the loudest/Noisiest A/C I could have imagined. After Our Camping season up in Ohio I decided to change out both units. I sold the New Furrion at a loss, just to get rid of it. I also sold my old Dometic. These Two New Tosot are super quiet and very efficient. Much better air distribution than the Furrion, and has a remote control as well as unit mounted controls. Another plus is when on the "Heat" side the thermostat controls the fan and cycle switch , so you do not have to keep turning the unit on or off to regulate the temperature. 
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Gerry & Brenda
CHARLOTTE HARBOR, FL
1994 Grand Villa - # 4466
U300 Unihome - 6V92 Detroit
4 speed Allison - Jake Brake

Re: Roof AC Replacement Recommendations

Reply #34 –
Quote from: Michelle –
Curious if you pursued the Atmos further.  It looks a little like the Eco-Cool, but literature shows it to be 1.25" less tall.

https://www.sdgelkhart.com/_files/ugd/3c6d89_2e97e7c5b365493cb122d034a9be061f.pdf
I have one in the mail right now for the GV. Super happy so far dealing with the company will report back after it's installed
1987 Grand Villa ORED
2001 U320 4010

Not all that wander are lost... but I often am.

Re: Roof AC Replacement Recommendations

Reply #35 –
It seems to me that roof top RV AC units have a low SEER rating.

The SEER rating is calculated by dividing the total number of BTUs (British Thermal Units) of heat removed from the air by the total amount of energy required by the air conditioner in watt-hours. The higher the ratio, the more energy efficient the air conditioner is.

The Houghton A3800 has a cooling capacity of 15,000 BTU/HR, the volt rating is 115v @ 14 amps

115 watts/HR X 14 amps = 1,610 watt/HRS.
BTU/HR are 15,000.
SEER equals 15,000 / 1,610 = 9.32 SEER

Compare that to a 20 SEER Mini Split.

Think of a mini split ceiling cassette replacing the roof top unit.

Tim
Tim Dianics
Pam Sapienza
Vader PupZilla Labrador Canine Beast (AKA Pup)
Columbia, MO
1996 U320 4000
2021 Jeep Gladiator, Diesel

Re: Roof AC Replacement Recommendations

Reply #36 –

I would love to be able to do that, but i can't find a ceiling cassette that runs on 120v.



Quote from: TGordon –
It seems to me that roof top RV AC units have a low SEER rating.

The SEER rating is calculated by dividing the total number of BTUs (British Thermal Units) of heat removed from the air by the total amount of energy required by the air conditioner in watt-hours. The higher the ratio, the more energy efficient the air conditioner is.

The Houghton A3800 has a cooling capacity of 15,000 BTU/HR, the volt rating is 115v @ 14 amps

115 watts/HR X 14 amps = 1,610 watt/HRS.
BTU/HR are 15,000.
SEER equals 15,000 / 1,610 = 9.32 SEER

Compare that to a 20 SEER Mini Split.

Think of a mini split ceiling cassette replacing the roof top unit.

Tim
1991 U300 Side Aisle 6V92 Silver #3897
2004 U320 40' #6246