2nd AC size

Thanks all! The unit is pre-wired for electric but not ducting. Should have mentioned that originally. So it would be a direct vent for the second. We have a front bathroom which currently has a vent and the bedroom has a vent. The factory vents can only be aimed not closed. So I intend to replace those with vents that can be closed helping cool the main living space and the bunk room more and then open all when we are on 30amp and can only run a single. Most of our camping is <90 F but being east coast it is often very humid. Anyway, sounds like most would for 15k for the bedroom. Maybe I add a box fan during the day to blow bedroom air out into the living space to help.

Thanks again all!

kfp673 wrote:
Thanks all! The unit is pre-wired for electric but not ducting. Should have mentioned that originally. So it would be a direct vent for the second. We have a front bathroom which currently has a vent and the bedroom has a vent. The factory vents can only be aimed not closed. So I intend to replace those with vents that can be closed helping cool the main living space and the bunk room more and then open all when we are on 30amp and can only run a single. Most of our camping is <90 F but being east coast it is often very humid. Anyway, sounds like most would for 15k for the bedroom. Maybe I add a box fan during the day to blow bedroom air out into the living space to help.

Thanks again all!

If it is just for the bedroom, a polar cub 9 or 11 would be more than enough and possibly quiet enough to sleep with while running.

P.S. - a big unit for a small space equals a lot of short cycles which isn't good.

wanderingaimlessly wrote:
The only thing I would question over the "bigger is better" folks is, how do you camp? If you frequently dry camp, you may find that a supplemental 9k to 11k btuh unit may allow you to run a little 2000 watt genny to power the slightly smaller ac unit on those occasions you dont have a shore power tap available.

You aren't running 2 air/con units off a 2000 generator.

If you plan to run the air/con off grid, better to jump up to a 3000w generator.

Super_Dave wrote:
If it is just for the bedroom, a polar cub 9 or 11 would be more than enough and possibly quiet enough to sleep with while running.

Is there something wrong with your air/con? We've always slept with it on. Much easier than sleeping in a pool of sweat.

As far as short cycling...if that happens, just open the bedroom door, so the excess bleeds out extending the cycles.

valhalla360 wrote:

wanderingaimlessly wrote:
The only thing I would question over the "bigger is better" folks is, how do you camp? If you frequently dry camp, you may find that a supplemental 9k to 11k btuh unit may allow you to run a little 2000 watt genny to power the slightly smaller ac unit on those occasions you dont have a shore power tap available.

You aren't running 2 air/con units off a 2000 generator.

If you plan to run the air/con off grid, better to jump up to a 3000w generator.

When off grid 1 A/C may due. Having a lower wattage unit will have an advantage when power is coming from a smaller genset.

valhalla360 wrote:

wanderingaimlessly wrote:
The only thing I would question over the "bigger is better" folks is, how do you camp? If you frequently dry camp, you may find that a supplemental 9k to 11k btuh unit may allow you to run a little 2000 watt genny to power the slightly smaller ac unit on those occasions you dont have a shore power tap available.

You aren't running 2 air/con units off a 2000 generator.

If you plan to run the air/con off grid, better to jump up to a 3000w generator.

No, I'm not suggesting running two AC units off of a 2000 watt genny, but you can run a single little 9000 btuh AC on the small genny, which is not normally doable with the 15000 unit.

wanderingaimlessly wrote:

valhalla360 wrote:

wanderingaimlessly wrote:
The only thing I would question over the "bigger is better" folks is, how do you camp? If you frequently dry camp, you may find that a supplemental 9k to 11k btuh unit may allow you to run a little 2000 watt genny to power the slightly smaller ac unit on those occasions you dont have a shore power tap available.

You aren't running 2 air/con units off a 2000 generator.

If you plan to run the air/con off grid, better to jump up to a 3000w generator.

No, I'm not suggesting running two AC units off of a 2000 watt genny, but you can run a single little 9000 btuh AC on the small genny, which is not normally doable with the 15000 unit.

Still better to jump up to a suitable generator (up around 3000w) but a 2000w can usually work if you use a soft start and make sure nothing else is running...but that applies even if you put in a small air/con. It's the startup load that is the challenge for undersized generators.

I take it you have a 50A connection? Running 2 AC's on 30A...Hmmmm.... Start there. You may need to consider a slow start capacitor installed on both units if you have 30A connection.

valhalla360 wrote:

wanderingaimlessly wrote:

valhalla360 wrote:

wanderingaimlessly wrote:
The only thing I would question over the "bigger is better" folks is, how do you camp? If you frequently dry camp, you may find that a supplemental 9k to 11k btuh unit may allow you to run a little 2000 watt genny to power the slightly smaller ac unit on those occasions you dont have a shore power tap available.

You aren't running 2 air/con units off a 2000 generator.

If you plan to run the air/con off grid, better to jump up to a 3000w generator.

No, I'm not suggesting running two AC units off of a 2000 watt genny, but you can run a single little 9000 btuh AC on the small genny, which is not normally doable with the 15000 unit.

Still better to jump up to a suitable generator (up around 3000w) but a 2000w can usually work if you use a soft start and make sure nothing else is running...but that applies even if you put in a small air/con. It's the startup load that is the challenge for undersized generators.

I asked a question about HOW they camp, and offered that IF they frequently dry camp, they MAY want to look at a smaller AC that a 2000 watt genny COULD RUN.
I'm not trying to spend unlimited amounts of someone elses money.
That is the purvue of others.