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Old 07-23-2013, 07:53 AM   #15
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I run my generator while driving, crockpot and A/C. With the basement house A/C, it stays nice and cool. Surprisingly, it has very little impact on mpg either.

Don't get me wrong, I don't run it all the time, but far more when in TX, OK, NM, AZ, etc. Real hot places....
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Old 07-23-2013, 08:01 AM   #16
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Quote:
Originally Posted by Murf2u View Post
But be aware, even 2 rooftop a/c's together are nowhere near as much cooling capacity as the dash unit is, especially on the highway.
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You will have to explain that comment to me.
me too.
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Old 07-23-2013, 08:09 AM   #17
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You will have to explain that comment to me.
Me too and would like to know what he's been smoking

Perhaps he meant using dash air is more fuel efficient, which it is a bit. I would run the dash air and one AC, if that was enough, rather than 2 AC units. In very hot weather going down the road running both ACs, it not uncommon the genny overheats and shuts down.... depending how and where the mfgr installed the genny.
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Old 07-23-2013, 12:34 PM   #18
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Explain to me too. I run my genny all the time when it's hot and I run both roof AC's. My roof airs are so cold they will drive you out of the coach the dash air will only cool the front and not that well if it is super hot out.
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Old 07-23-2013, 04:32 PM   #19
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Welcome to a fellow Georgie Boy owner...our gen is propane so has no impact on our diesel fuel...we can run ours while driving but haven't had to do it very much since it is just the 2 of us and I can sit right in front by the dash AC with the mounted fans blowing too if needed
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Old 07-23-2013, 04:49 PM   #20
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The info pack with my 2000 Georgie Boy Class C said NOT to run the Gen while driving. They gave NO reason.

It will cut off if you have less than 1/4 tank of gas as it uses the gas from the main tank.

It is illegal in certain tunnels and bridges; places like the Chesapeake Bridge Tunnel and the Hampton Roads Bridge Tunnel (Virginia), will inspect your vehicle before entering for the gen running and all propane being turned off at the tank.

It seems that everyone here run them all the time, as needed.
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Old 07-23-2013, 08:09 PM   #21
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But be aware, even 2 rooftop a/c's together are nowhere near as much cooling capacity as the dash unit is, especially on the highway.

Quote:
Originally Posted by gacamp View Post
You will have to explain that comment to me.
A typical dash a/c system on a Ford chassis is (at max capacity) a 60k BTU setup. A typical rooftop is 15k BTU, so a pair of them would be 30k BTU, or half the capacity of the dash system.

The problem with using the dash unit to cool the coach is not cooling capacity, it's air circulation.
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Old 07-23-2013, 08:29 PM   #22
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In very hot weather going down the road running both ACs, it not uncommon the genny overheats and shuts down.... depending how and where the mfgr installed the genny.
One of the reasons we like our liquid cooled diesel gen set. It's never shut down due to overheating like our previous air cooled propane unit did. Plus the diesel uses far less fuel even at full output and two 13.5 heat pumps are only about half a load. I've run both heat pumps continuously on 30 amp shore power and our gen puts out about 64 amps under full load.
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Old 07-23-2013, 08:32 PM   #23
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A typical dash a/c system on a Ford chassis is (at max capacity) a 60k BTU setup.
Even the Evans Tempcon unit in our DSDP doesn't put out that many BTU's. And I know our previous Ford chassis MH's weren't that good either.
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Old 07-23-2013, 08:34 PM   #24
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You will have to explain that comment to me.
X2...huh?
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Old 07-23-2013, 09:19 PM   #25
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gacamp is right - the response is bass ackwards to my experience . . . .the dash air is commonly less powerful than either roof air unit.....WAY less powerful
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Old 07-24-2013, 03:58 PM   #26
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But be aware, even 2 rooftop a/c's together are nowhere near as much cooling capacity as the dash unit is, especially on the highway.
Gee everything I read about dash air on ford is 6k btu not 60k.
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Old 07-24-2013, 04:07 PM   #27
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60k BTUs is approximately a 4ton AC, which is the system size used in a typical home. Are we saying that a dash air is putting out the same BTUs as a whole house AC??
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Old 07-24-2013, 06:25 PM   #28
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I don't have any idea the BTU's of the dash AC but it does kind of keep the front area cool. When traveling and it's 90 or above outside the galley and rear area of the RV will get very hot so I run the generator and the house (basement) AC and turn off the dash air. That works well and the interior of the RV is comfortable when we get where we are going. I've added a roof AC and if the basement AC doesn't keep it cool enough I'll also run that one. On this trip I run an oscillating fan to help circulate the air using the inverter if the generator is not running. It is aft of the seats and aimed to the front. This helps the dash air circulation. I also use the fan when using the basement air and I think it makes a nice difference.
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