That battery though Image: Curtis Silver / KnowTechieĪ massive 18650 lithium-ion battery pack can be docked with the Mark 2. This is a standard operation of any portable air conditioner and the reason in-window units are in the window. You don’t want that heated air spitting back into the space, creating more work for the Mark 2. If you are using the unit in a vehicle or camper, you will want to place the tubes in the included foam thingy and stick them out a window. Venting didn’t cause a problem when testing because the space was too large for it to matter. The Mark 2 needs to tilt back to drain, or the pipe should drain into something. The internal circuits are only waterproof enough to sustain against general use, but not against long-term exposure. Thankfully, there is a drainage tube that can be led outside or into an empty water bottle. It can store water inside for a few hours. Like any air conditioning unit with a compressor, the Mark 2 generates water waste. It’s a small price to pay to cool down your camping trailer or the cab of your semi-truck. It certainly runs quieter than a traditional in-window unit. Basically, it sounds like a vacuum running in another room. The Mark 2 portable AC runs at 52dB, but that doesn’t really register with the brain as to how loud or quiet it is. Venting, draining, and sounding Image: Curtis Silver / KnowTechie It should be noted that the refrigerant used in the unit (R134a hydrofluorocarbon) will be banned from use starting in 2024 in most HVAC units and in vehicles starting with 2021 model years, according to the EPA. It sucks air through one tube, cools it with a compressor, and spits out heated air through another tube. I would not buy a portable air conditioner for this reason, but it does what it says. So I didn’t have to turn on the floor fan. However, I was still able to feel a bit of cold air. room and outside the optimal range of the Mark 2. Standing next to the unit or using it to cool my lower half while writing this review is effective. Since I was unable to meet these conditions, having no small space to test the Mark 2, any estimations on relative coolness are just that. If these conditions are met, the Mark 2 can reduce the temperature by 9-22F/5-10C. Ambient temperature no greater than 100F/38C.It’s an odd flex, but at least they’re honest about itĪs mentioned, the optimal cooling space is 25-40 sq. But if there is competent insulation or the sun is down, the Mark 2 can do the job. An average car air conditioner pumps out 10,000 BTU. This equates to 7090 BTU, which is hotter than the Mark 2 can cool. area (the optimal cooling area handled by the Mark 2). It mentions that the heat generated by sunlight is 283.6 BTU/sq. It’s quite honest about the limitations of that output in the spec sheet. The ZERO BREEZE Mark 2 pumps out 2300 BTU of cooling power. It simply cannot compete with the ambient atmosphere in large spaces, especially ones that trap heat. This is not something you purchase to cool down an attic or basement. It’s designed for travel purposes the selling points are tents, campers, trucks, boating, etc. This thing is made for specific sized spaces, generally, outside of one we would consider a regular living space. Unlike the portable AC unit that your apartment complex dragged in when the apartment AC went out again, the Mark 2 will not cool an entire domicile. The ZERO BREEZE Mark 2 cools all your sweaty crevices Image: Curtis Silver / KnowTechie It’s also got a massive battery on it, which explains that $1,499 price point. Regardless, it does have its use cases and might not satisfy your imagination as it pertains to such a thing. As we lean into eternal summer around the country, a portable air conditioning unit sounds kind of nice. The ZERO BREEZE Mark 2 is one such unit, functionally situational and a luxury for traversing the developed world.Īfter running a successful Indiegogo campaign, the ZERO BREEZE Mark 2 is now available to the public. As the world continues to heat up due to the human race’s inability to temper its reliance on fuel systems that slowly burn us alive, we are always finding ways to cool down.įor the moment, a portable AC unit will have to do.
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