Hose diameter: 5.9", straight hose couplings exit at 45 deg angle toward ceiling. Optional bent connectors for unit-side cost extra if venting through ceiling or floor.
Warranty: 60 days with pre-paid return freight to S California service center. Customer pays freight 61-365 days to obtain one year parts,labor warranty and for 3 years compressor warranty. Customer must retain all original packing. Mfg warranty void if vents are restricted ( warning about use of your own screen ) or not per approved install or if recommended cleaning is not performed. Best to open on-line case, upload photos and get pre-approval for your installation and to document cleaning to make warranty claims more difficult to deny.
Optional Amazon Assurion protection plan: Covers return freight, parts, labor for 4 years beyond the first. No need to retain packaging. $44 - 4 year comprehensive protection plan. Assurion told me on the phone that they will also cover the return freight during the mfg one year warranty. Getting that in writing via email is advised. This should give you five years total protection.
Condensate: internal capacity 2 pints in the base. Self vaporizing, does not require draining in most climatic conditions. Continuous drain hose is allowed. If continuous drainage is necessary, a 5/8" x 1/2" stretchy silicon water hose will fit over the drain port of the air conditioner.
"Operates more efficiently without continuous drainage." "The self-evaporating system recirculates collected moisture over the internal condenser coils which allows cooler air and more efficient operation." The drain is at the very bottom. May spill out if tilted even if drain is capped. May fail to shut off when full resulting in overflow. Use a catch pan to protect your floor. Drain outlet accepts 5/8" x 1/2" soft silicone tube.
Efficiency and noise: Not Energy Star rated. Dual hose units employ an extra fan and motor to suck in outside air to cool the condenser. Therefore they consume extra power, about 10-20% more power (10.9 amps current) than single hose models, and are noisier. They still waste some indoor conditioned air because the second hose is only capable of providing a portion of the air required for removing heat from the internal condenser. Nevertheless most say that they cool faster than a single hose unit.
Heat pump models available: Those who are currently using electric resistance heating may wish to hold out for a heat pump PAC as they provide more heat than resistance type heaters, are more energy efficient than resistance heat and can be used year round. "SH" designates the heat pump model.
Satisfaction rate: Many people are happy with their dual hose units while others ultimately find them too ungainly loud or find the extra large 6" venting hoses difficult to install.
Can this model provide fresh air to the living space and exhaust stale room air? Unlikely but unverified at this time.
New low income program: The federal low income heating assistance program is beginning to roll out subsidy for mini-split systems. Qualified low income families including renters are eligible. Check to see if available in your area.