How quiet those ductless split system is as comparing to a window air conditioner?
I would really hate to spend a lot of money getting a ductless split system installed and then discover that the it (the blower) is not much quieter than the window air conditioner that it has replaced.
My questions are:
- The spec of one of the most quiet mini-split system says that its indoor unit generates 40-db or something. According to www.Oneida.com, 40-db is like the noise from a normal conversation. Honestly, I don't really know how noisy a "normal conversation" is as applying to an air conditioner. But surely this doesn't sound very good. What's people opinion on this based on their personal experience with a ductless split system? Do they find the noise level to be acceptable for sleeping? How much difference of its noise as comparing to the noise from air flowing through an air register of a central air conditioner (with ductwork)?
- How a noise level was rated? Are they all rated 3-ft away from the air conditioner?
- What's the common noise level of a modern window air conditioner being sold within the last 2 years or so? Something like low-50-db or high-60-db? I don't have a sound-meter available (at least not yet); I cannot measure the noise level of my existing window air conditioners.
Thanks in advance for any info.