Umm, Wow.Things To Like:- Build quality is "exceptional".- Quality seals on the water tank, including lid.- Reduces humility to below 30%. This was the biggest selling point for me.I have health challenges that beg for low humidity air. Compressor and peltier dehumidifiers struggle or are unable to reduce below 30% under many conditions. The unique operating principle behind this unit, desiccant, allows this dehumidifier to reduce humidity below 30% under about any ambient condition above freezing temperatures. I almost bought their compressor model for 3-4 times the cost, but although it's much more energy efficient at higher humidities (being a compressor model), I would likely have been disappointed in the humidity reduction for high altitude air (4200ft) at 30% humidity. Soooo glad I got this rarer type of dehumidifier.Things To Be Aware Of:- energy efficiency is probably on par with peltier models at higher humidities. But at ~350 watts on High and ~175 on Low, it pulls so much more water than something that ran at ~10-80 watts, in environments where those would just stop pulling water.- In dehumidifiers, wattage translates to heat output. This cannot be avoided. If the heat is desirable such as in cold environments, it's a win-win.- compressor models are 4-5x more efficient in higher humidity environments (meaning that they also output much less heat for the amount of water that they can pull), but quit pulling water below a certain humidity threshold or at colder temperatures than this unit. Ultimately, buy from a brand that stands behind their product. I found THIS unit by searching for the highest rated dehumidifiers, and their compressor model has a 4.7 star rating, after thousands of reviews. I was impressed by the amount of education the company put into their sales material, so decided to check out their other products. Soooo glad I did.... But yeah, if you live in a warm, humid climate, think about their compressor model.Relative humidity means, well, it's "relative". Warm, humid air at low altitudes (most of the US) feels soooo much better when you can reduce the humidity 30% or more, keeping the same temperature. If you live in a hot, humid climate, you should consider a compressor model if you can afford it (often +$200; remember they are much more efficient under high humidity conditions, producing less heat for the water pulled...). Be sure to check its operating temperatures.You should NEVER operate THIS mechanical desiccant dehumidifier in ambient temperatures of 95°F or greater. That INCLUDES the rise in temperature from running this unit. Remember that its max wattage output is ~350, that translates to ~350 watts of heat.Finally, (please forgive my broken-record style, I want these guys, AEOCKY, to succeed so they can keep doing what they're doing...) I suspect the most important thing to be cautious of is operating this dehumidifier in high temperature environments, and with unfiltered air (think air purifier, and absolutely, consider their fantastic low-power air purifier; I bought one, evaluated it, then bought two more...). Using this unit in an environment of dusty air is asking for an earlier issue, if not demise. The included, built-in filter isn't for finer dust; It's mostly for hair, carpet and textile fibers, and allows better unrestricted airflow through the unit.If you want the unit to meet it's targeted life (>3 years), make sure you read all the operating literature (~5-15 mins), and treat it like it's VALUABLE, because it absolutely is. Very few companies make these types.