Trailer Life Magazine Open Roads Forum: Airxcell Coleman's 13,500 btu Mach 8 Low Power Consumption
Open Roads Forum Already a member? Login here.   If not, Register Today!  |  Help

Newest  |  Active  |  Popular  |  RVing FAQ Forum Rules  |  Forum Posting Help and Support  |  Contact  

Search:   Advanced Search

Search only in Tech Issues

Open Roads Forum  >  Tech Issues

 > Airxcell Coleman's 13,500 btu Mach 8 Low Power Consumption

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 
Sponsored By:
Bill001

CT

Full Member

Joined: 06/27/2015

View Profile


Offline
Posted: 02/11/18 11:11am Link  |  Quote  |  Print  |  Notify Moderator

Hi,

I found the specs for Running Wattage on this unit, but I have not found a power consumption value when the unit is on low.

Does anyone know that, or measured it?

Thnx
Bill

ScottG

Bothell Wa.

Senior Member

Joined: 02/25/2005

View Profile


Offline
Posted: 02/11/18 11:18am Link  |  Quote  |  Print  |  Notify Moderator

I measured my Mach 15 last summer and the difference is pretty much inconsequential it's so small.


Scott, Grace and Wesly
2003 Dodge 3500 4x4, 6 speed Cummins (lightly bombed),
2018 Silver Fox 32A - many mods to come!
H0NDA eu2000i

SoundGuy

S Ontario

Senior Member

Joined: 02/11/2015

View Profile



Posted: 02/11/18 11:45am Link  |  Quote  |  Print  |  Notify Moderator

Bill001 wrote:

I found the specs for Running Wattage on this unit, but I have not found a power consumption value when the unit is on low.

Does anyone know that, or measured it?


You'd have to be more specific about your particular model as there are several versions of Coleman Mach 8 A/Cs. Also, RLA - Rated Load Amps varies depending on ambient temperature. If total draw is a concern you'd be far better off with a Coleman Mach 3 P.S. A/C.

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 02/11/18 11:58am Link  |  Quote  |  Print  |  Notify Moderator

My Dometic 13500 starts out at as low as 1100 watts and maxes out at about 1900 watts. Ambient temperature and run time both affect the demand.

Low voltage may cause permanent damage to the AC unit. That is one reason I use an autoformer.


Regards, Don
My ride is a 28 foot Class C, 256 watts solar, 556 amp hours of AGM in two battery banks 12 volt batteries, 3000 watt Magnum hybrid inverter, Sola Basic Autoformer, Microair Easy Start.

ScottG

Bothell Wa.

Senior Member

Joined: 02/25/2005

View Profile


Offline
Posted: 02/11/18 01:16pm Link  |  Quote  |  Print  |  Notify Moderator

OK, just went out and measured my front AC, a 13.5 btu Mach.
Difference between low and high speed (according to my EMS) is less than 1/2A.

pianotuna

Regina, SK, Canada

Senior Member

Joined: 12/18/2004

View Profile


Offline
Posted: 02/11/18 01:30pm Link  |  Quote  |  Print  |  Notify Moderator

Ah,

I did not understand the question. Mine draws about 50 watts less on low. Measured with a Kill-a-Watt meter.

BarneyS

S.E. Lower Michigan

Moderator

Joined: 10/16/2000

View Profile



Good Sam RV Club Member


Posted: 02/12/18 10:57am Link  |  Quote  |  Print  |  Notify Moderator

Moved to Tech Issues forum from DIY.

dougrainer

Carrolton, Texas

Senior Member

Joined: 06/11/2007

View Profile


Offline
Posted: 02/12/18 02:00pm Link  |  Quote  |  Print  |  Notify Moderator

Mach 8 13.5
hi fan 1.3 amps 156 watts
lo fan .7 amps----84 watts
compressor at 95 degrees 12.5 amps---- 1500 watts
FAN watts/amps do not change with outside temp
COMPRESSOR Amps/Watts will change with outside ambient temp. Doug

Bill001

CT

Full Member

Joined: 06/27/2015

View Profile


Offline
Posted: 02/12/18 02:26pm Link  |  Quote  |  Print  |  Notify Moderator

Thanks All,

That's exactly the info I was looking for

Bill

Reply to Topic  |  Subscribe  |  Print Topic  |  Post New Topic  | 

Open Roads Forum  >  Tech Issues

 > Airxcell Coleman's 13,500 btu Mach 8 Low Power Consumption
Search:   Advanced Search

Search only in Tech Issues


New posts No new posts
Closed, new posts Closed, no new posts
Moved, new posts Moved, no new posts

Adjust text size:

© 2018 CWI, Inc. © 2018 Good Sam Enterprises, LLC. All Rights Reserved. | Terms of Use | PRIVACY POLICY | YOUR PRIVACY RIGHTS