Whynter ARC-122DHP Elite 12000 BTU Dual Hose Digital Portable Air Conditioner with Heat and Drain Pump
$349 (+ sales tax) Free Shipping
offered to Amazon Prime members only
(or sign up for free month trail = cancel before 1st month ends = no charge)
Everywhere else, low-end prices for this A/C are $425-$450
click here to see google shopping prices [google.com]
The more competitive specs and efficiency are a prime concern for you, the slicker this deals is. Put simply, it's not the junky kind.
When researching, be aware that Whynter makes a nearly identical unit that doesn't offer heat pump functionality.
unit discussed in this thread = ARC-122DHP
(identical unit with no heat pump = ARC-122DS
This website lumps them together as one and describes them in great detail, noting the heat pump (with water pump function) as their only difference.
This portable A/C has a some characteristics that set it apart.
For starters it's dual-hose for more efficient operation. For my application that's key.
In general, Whynter has a good rep for portable A/C units.
It scores a good efficiency rating compared to similar portable A/C's
, at EER 12.25
It has notably lower-than-typical power consumption: 980 W / 9.0 Amps. That's a couple hundred watts lower than other 12000 BTU units, and about 1 Amp less. This can be a deal-maker
if the electrical load on your power outlet is a prime concern.
nothing I know of yet
I did find two reviewers that said their units became noisy but still worked.
notes: According to an Amazon reviewer, the water pump is designed to work only in heat pump mode (i.e. only needed in heat pump mode). Evaporative mode functions with no need of a water pump during regular A/C operation. It does
offer handy drain hose attachment as well. (you must supply the hose)
It does restart itself after a power outage/interruption, resuming its previous settings.