For practical use, this is a terrible timeline. The original model barely lasted a couple of hours on the battery. It has also been the source of several Zero Breeze complaints. One of the major buying points of this device is that it is battery powered. This one includes a dehumidifier mode as well, and makes it easier to remove the collected water. At the very least, you won’t have a puddle inside your tent. Zero Breeze Mark 2 is slightly better in this regard. I don’t agree with them, but it won’t do to ignore them either. To be fair to this AC, you can also find plenty of reviews where people are gushing over this device. Zero Breeze air conditioner reviews made it clear that the device does a terrible job at managing water. The original Zero Breeze did a terrible job at this and things often ended in spills. Most portable ACs require the user to manually clear the water container or run a hose to move water out. Collected Water, Dehumidifier, And Battery PowerĪC units often collect water. To that end, you can (and should) use the included extendable exhaust hoses to push the exhaust out. It won’t make much sense to continue circulating the same hot air. One pulls in ambient air, the other pushes out hot air. There are two vents on the rear of the AC. So yeah, your small tent can benefit from this cooling. Well, you can, but the Zero Breeze is pretty much a small fan in that setting.Ī small, enclosed space is where it works best. You certainly can’t use it in the open (as shown in some promotional material). On the other hand, large tents won’t see much use for this AC. To be honest, even five person tents might be pushing it. The air output temperature stays in the range of 50s, maybe 60s (Fahrenheit), and keeps cool air flowing.įor a small tent, like a 4 or 5-person tent and lower, this can work just fine. Though the Zero Breeze Mark 2 doesn’t offer the same cooling, it seems to do fairly well in its avowed purpose. For comparison, several conventional ACs offer 5000 BTUs, while many have 10,000 BTU available as well. You could probably use a window AC or a portable AC and get higher output. The higher cooling power bodes well for this device, though a lot still depends on ambient power.Īlso, note that the capacity is much lower than regular run-off-the-mill air conditioners. In comparison, Mark 1 had 1,100 BTU on offer. How does it perform on cooling? Zero Breeze Mark 2 lays claim to 2,300 BTU for cooling. However, the most impressive are the actors/models in the promotional video who can manage to pull off walking with this heavy AC and make it look effortless! Zero Breeze Mark 2 Cooling Power And Function It has a very supercar-like look at the back, while the front shows off a powerful fan that should get right into the cooling action. Count those in, and the package bulks up to a substantial 23+ pounds. That’s not including the large battery and adaptor you have to carry along for this “portable” AC. It also has a substantial weight, clocking 17 pounds on the scale. Zero Breeze Mark 2 measures about 20 x 13 x 8 inches, which isn’t in the neighborhood of a small AC. The AC does look good, but it’s not all that portable or sleek. “A window AC rated at 6,000 Btu will therefore deliver more cooling than a portable AC unit rated at 6,000 Btu.Good things aren’t so easy to come by, and so let’s head to reality. “The DOE’s test conditions for window ACs are more demanding than those for portable ACs,” says Joanna Mauer, who tracks energy efficiency for the Appliance Standards Awareness Project, a group that advocates for efficiency standards. (Btu, or British thermal units, measures cooling capacity.) And during this transition, you might see two Btu ratings listed on the same box.įor example, a portable model that was formerly listed at 14,000 Btu (called the ASHRAE rating, from the American Society of Heating, Refrigerating and Air-Conditioning Engineers) may now carry a DOE rating of 10,000 Btu.īut even with this change, you still can’t compare a portable air conditioner with a window unit regarding Btu. The result? When you’re shopping, you might see portable air conditioners that list a Btu rating according to the new standard-and some that list an inflated or misleading Btu rating. Many manufacturers have already been producing units that meet those standards. In 2016, the Department of Energy set new efficiency standards for them, but they don’t go into effect until 2025. While window air conditioners have been subject to federal energy efficiency standards for more than 25 years, portable air conditioners have not.
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