I'm about to purchase a Mitsubishi Mr. Slim AC/Heat Pump for my basement. The indoor unit is an MSZ-A09NA and the outdoor unit is an MUZ-A09NA. The indoor unit will be mounted on an inside wall which means that the condensate will need to be pumped out. The discharge piping will need to go UP approx. 2 or 3 feet (depending on how high it's mounted) and accross 12 feet to reach an external wall.

I've heard that the condensate pumps can be noisy and might be an issue if this scenario was being installed in a bedroom. Our family room is directly over the spot where this pump will be located, so if it is noisy it could be a problem. We also plan to spend a lot of time in the area being cooled by the Mr. Slim, so I'd like to address the noise now rather than later.

Ideally, it would be nice if this unit could be installed on an exterior wall and let gravity drain it out, but that's not possible. I'm looking for a good/highly reliable pump, that is sized to do the job, and is as quiet as possible.

Any recommendations? Are there any pumps you would advise I NOT purchase?

Thank you.