note the 1 time 25% off coupon available cannot be used on generators.
also note, that if you don't use the above coupon but DO use the 20% off one, you save $95. HF can be tricky like that.
eta: and because i'm a nerd...
Code:
unit rload % rload W rtime gal kWh kWh/gal best $
9000g 50 3625 13 7.93 47.125 5.942622950819672 $704
8750i 25 1750 15.1 5.9 26.425 4.478813559322034 $960
that makes the inverter unit less efficient at rated runtime loads. I wish they had identical loading data listed, as i'm not sure how to interpret these results.
my gut tells mes the 9000 is better if you're running closer to its 50% rating continuous.