I don't play golf or fish, but I do enjoy puttering in my garage and like a challenge. I like running my RV on one Honda 2000i and have found that it will only run an 8500 btu AC dependably. That is at all altitudes and temperatures. I started one of these once before and ran out of time, so stuck a 8000 btu window AC in my Toyota. I still have the bug to do this.This is a picture and link of one done by Professor 95 some time ago.The issue I see with the one pictured is evacuating, cutting and reassembling lines. I have no evacuating equipment nor the swagging tools so would have to pay to have it done. I am thinking that possibly the cold air discharge could be modified to redirect the air without disassembling the cooling system.Anyone have any input on this? https://www.rv.net/forum/index.cfm/fuseaction/thread/tid/21943313/print/true.cfm

I do not see any need to cut any lines -- no need to disassembly any part of the A/C. The key would be to have a larger enough hole for the cool air to enter the RV. Too small a hole in the roof and the A/C will ice up. About 1/2 of A/C are not ducted in the RV. They only blow in the living room, but if your RV has ducts you should be able to blow the cool air into the duct.2. Remember that HOT air is exhausted on the back side of the A/C so leave lots of room for this to escape.3. Make sure the A/C is security bolted to the roof. You do not want to lose it driving on the interstate.

Won’t the Coleman Mach 1 11,000 run on a Honda 2000?It draws 1100-1200 watts, 12A starting.. Altitude might be a issue but you can rejet it.Plus at high altitude it’s usually cooler.

I have often read that a regular roof AC can be run with a Honda 2000, I personally have run a 13.5k roof air with a Honda 2000.I can also run my 11k roof unit with my Honda but it is not dependable even with a hard start capacitor installed.The 11k Colman power saver draws 45.6 LRA. Locked Rotor Amps. 45.6A is under ideal conditions. When you look at the numbers the 45.6 is beyond the capability's of the Honda. The mighty little Honda will start and run the 11k when the temperature is in the 70's, somewhere between 70 and the 90's the Honda will no longer start the AC! A web search shows that for every person that claims to be running a roof air on a 2000 there are 5 that say it will not work!

IIRC the Professor did not cut any lines, he unfolded everythingRemoving the factory pan from the window unitAnd mounted everything into the pan from the gutted rooftop unit

He definitely cut lines. I thought this project would be a ways off. But finished up what I was working on and now only need a donor AC.

Window AC to roof air , hare brained idea. | Good Sam Community

16 Replies

jjrbus
Explorer
Feb 17, 2019
Picked up a experimental one, 3 years old and looks a little worse for wear inside. The LG 8000 btu seems to be the lowest profile 12.4" to fit the cover I have.

Looking it over and trying to figure a direction to go with it?
jjrbus
Explorer
Feb 03, 2019
He definitely cut lines. I thought this project would be a ways off. But finished up what I was working on and now only need a donor AC.
MrWizard
Moderator
Feb 03, 2019
IIRC the Professor did not cut any lines, he unfolded everything
Removing the factory pan from the window unit
And mounted everything into the pan from the gutted rooftop unit
jjrbus
Explorer
Feb 03, 2019
I have often read that a regular roof AC can be run with a Honda 2000, I personally have run a 13.5k roof air with a Honda 2000.

I can also run my 11k roof unit with my Honda but it is not dependable even with a hard start capacitor installed.

The 11k Colman power saver draws 45.6 LRA. Locked Rotor Amps. 45.6A is under ideal conditions. When you look at the numbers the 45.6 is beyond the capability's of the Honda.

The mighty little Honda will start and run the 11k when the temperature is in the 70's, somewhere between 70 and the 90's the Honda will no longer start the AC! A web search shows that for every person that claims to be running a roof air on a 2000 there are 5 that say it will not work!
Big_Katuna
Explorer II
Feb 03, 2019
Won’t the Coleman Mach 1 11,000 run on a Honda 2000?

It draws 1100-1200 watts, 12A starting.. Altitude might be a issue but you can rejet it.

Plus at high altitude it’s usually cooler.
TenOC
Nomad
Feb 03, 2019
I do not see any need to cut any lines -- no need to disassembly any part of the A/C. The key would be to have a larger enough hole for the cool air to enter the RV. Too small a hole in the roof and the A/C will ice up. About 1/2 of A/C are not ducted in the RV. They only blow in the living room, but if your RV has ducts you should be able to blow the cool air into the duct.

2. Remember that HOT air is exhausted on the back side of the A/C so leave lots of room for this to escape.

3. Make sure the A/C is security bolted to the roof. You do not want to lose it driving on the interstate.

Forum Discussion

Window AC to roof air , hare brained idea.

16 Replies

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