You might read the posts at the Casita Travel Trailer Forum on the Mach 8
. They are now using it on the 17's. While everyone's idea of "too noisy" is different, I'd sure want to hear one before I specified it as a replacement.
For those that do not want to join the Casita Forum (and you really should - it is useful no matter what fiberglass trailer you own or want) here is some of the discussion:
Many complaints about outside noise (even from neighbors), as well as increased inside noise compared to the older model. One user measured 73db 20' from the trailer. For comparison, my Dometic 11,000BTU AC produces a SPL of 60 db at 21'.
Here is the spec sheet for the Mach 8 9200BTU
. Locked Rotor 58.4 amps
And the older Polar Cub
Locked Rotor 45.6
and Here are the specs for the Dometic Penguin II
Locked Rotor 53 amps. (I believe this is the model used by Escape)
The locked rotor current (useful for determining generator starting capability) of the new Mach 8 is over 10 amps higher than the older model, so before you make the substitution you might check to see if it will run on a Honda 2K generator. By the way, at 53 amps, the locked rotor current of the Dometic 11,000BTU AC is 5 amps less
than the new Polar Cub Mach 8.
On edit - sorry kootenaigirl for duplicating your post (I was typing this one).