I have been looking at that unit.
How long have you had it?
Is it quite both on start up and while running?
The comments on that unit say that it does not have three fan speeds as advertised. Is this really the case?
Thanks for sharing.
Well this is embarassing, I'll have to verify the 3 fan speeds. I tend to set it and leave the fan on the same speed for AC units. I will check and get back to you.
I bought mine (3 units) 2 years ago during my refit project, but only started using them this January for heating and cooling.
As part of the installation, I isolation mounted them each on an aluminum plate which has vibration mounts to allow the unit to float and not transfer vibration to the mounting surface. This works quite well. The duct runs are quite short, so some noise travels through the duct. Longer runs with a few sweep bends tends to reduce noise travel. My units run fan on whether the compressor is running or not to keep the area at an equal temperature. Don't think the fan noise is any different than the previous units. They're definitely noisier than central air conditioning in a house, but quieter than a window AC unit. As for the compressor, if I listen for it, I can hear it start and run. It's much quieter than the old units. As with most motor driven devices, there was a short wear in period during which they become quieter. Now, if I want to check to see if the compressor is running, I need to put my hand over the discharge vent.
Have 2 minor problems with the units. The thermostats think in degrees Celsius even though you can set the display for Fahrenheit. The on off differential can be up to 2 degrees from set point. The units measure return air temperature not where the thermostat control is. So, I've had temperature swings of 6 degrees on start up, usually it's more like 4 and once the unit has been on for an hour the differential is more like 3 degrees F or less. typically I leave the units on 80 when I'm away and set them down to 74 when I arrive. They may cycle between 76 and 71 before settling into a 75 and 73 or 72 swing pattern. Unlike other boat AC units I've had, the differential can't be changed and it thinks in Celsius which is a greater spread.
The other minor problem was a bad run capacitor on one unit. Not a big deal for me to swap out and normal electrical failure component, that may happen. I've had them fail on other AC and electrical motor equipment.
One of the big surprises for me was how well the units work in reverse cycle heat mode. Before leaving in January to head south, I was heating the boat very nicely until the water temperature got down to about 36 degrees. Below that the output dropped off to very little. Above 40 degree water temperature, the heat was amazing! It really pumps out the cold air during the summer also!
Will check on the fan speed and post what I find.
Ted
