Quote Originally Posted by MarkC
The biggest noise with the heat pump in my opinion is the fan. Can you shield the patio with some noise barrier. We have a small 4ft section of vinyl fencing that does a nice job with the noise. I have a Heat Siphon 3.25SX scroll compressor. It's not all that noisy but I would not want to sit next to it.
I have the same one as MarkC. I bought one with a scroll compressor too because it is quieter, more efficient, and has less moving parts than a piston compressor. It really isn't that noisy - it's a bit quieter than a similarly sized central air compressor unit.