I got rid of the rotten old AC unit and want to replace it with a Maxxair. Problem is I don't know how to wire it. Do I have to run all new wire to the battery (or wherever it runs to) or can I use the same wire but convert it somehow to connect to the Maxxair? I suspect it will be hard to run new wire through this ceiling.The existing wire from the AC says its 12/2 WG, 600 V, (UL), ETTCOFLEX, TYPE NMI think the AC only ever ran on shore power. So I'm not sure if this will even connect to the RV marine battery. Any tips?Thanks.

The Maxxair fan needs 12v DC. The wire you have there is the 120v AC supply for the old air conditioner. It will not work with the Maxxair. You will need to find a 12v wire already in the vicinity (maybe from a light) to power the fan, or run a new wire.

Are you sure you don’t want to replace the AC? Middle American gets warm in the summer months. Exhausting hot air via a fan thus pulling in hot air through the windows doesn’t cool anyone.

daboognish88 wrote:I got rid of the rotten old AC unit and want to replace it with a Maxxair. Problem is I don't know how to wire it! I'm a complete novice when it comes to electrical work.Seems to me the obvious (and safest) answer is to take it to a tech who does know what he's doing. ;)

Why wouldn't the 120V solid copper wire that supplied the defunct ac unit work for powering the Maxair fan? The wire don't know if it's 12 volts dc in it or 120 volts ac.I'd trace the wire back to the power source, disconnect it and reconnect it to a 12 volt source to power the fan, Simple and issue solved. Use the existing wire.

And make sure you flag the wires as 12 volt only - so the next guy doesn't set something on fire by putting them back into the 120 volt breaker.Ac wiring black is hot, white is neutral (ground). DC wiring black is ground red is hot (+12). In this case I would use the white as a +12.

How do replace my AC unit with a Maxxair fan? | Good Sam Community

SidecarFlip
Explorer III
May 05, 2018
Why wouldn't the 120V solid copper wire that supplied the defunct ac unit work for powering the Maxair fan? The wire don't know if it's 12 volts dc in it or 120 volts ac.

I'd trace the wire back to the power source, disconnect it and reconnect it to a 12 volt source to power the fan, Simple and issue solved. Use the existing wire.
SoundGuy
Explorer
May 05, 2018
daboognish88 wrote:
I got rid of the rotten old AC unit and want to replace it with a Maxxair. Problem is I don't know how to wire it! I'm a complete novice when it comes to electrical work.

Seems to me the obvious (and safest) answer is to take it to a tech who does know what he's doing. ;)
Lwiddis
Explorer II
May 05, 2018
Are you sure you don’t want to replace the AC? Middle American gets warm in the summer months. Exhausting hot air via a fan thus pulling in hot air through the windows doesn’t cool anyone.
drsteve
Explorer
May 05, 2018
The Maxxair fan needs 12v DC. The wire you have there is the 120v AC supply for the old air conditioner. It will not work with the Maxxair. You will need to find a 12v wire already in the vicinity (maybe from a light) to power the fan, or run a new wire.

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How do replace my AC unit with a Maxxair fan?

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