The water heater generates a manageable amount of noise when operating, similar to the sound level of a normal human conversation.
Installation Considerations
For optimal performance, your unit will need adequate air supply. A 12-foot-by-12-foot space is ideal, but this can also be achieved by a louvered door or ducting.
The heat pump water heater will generate a small amount of excess water, which will need to be drained to a nearby location.
Hybrid heat pump water heaters do not operate well in freezing outdoor temperatures or in cold garages during winter.