![]() The most common reason to use a portable air conditioner without an outdoor vent is when cooling computer server racks - in this case, efficiently lowering the temperature of the room is not as important as blowing cold air directly on the hottest computer components. Generally, if your central system can’t deal with the extra heat in a room just by redirecting the amount of air coming out of the vents, most HVAC professionals caution that you will only make the situation worse by adding a portable to the mix. ![]() You can vent the heat through a building’s cold air return ducts directly to a central cooling system, but only so long as there’s enough capacity in that system to soak it up. However, if you have a part of a building that gets exceptionally hot and you can’t vent directly outside, a portable air conditioner could also soak up the heat from that area and move it to a different area inside the building. See our review of the best tower fans here. If the heat from the exhaust fan can come back through the intake of the air conditioner, you’re wasting money.įor most cases where you can’t vent outside, a fan will be a much more efficient way to spread heat around inside a building and keep people comfortable. Does it need to go outside?Ī portable air conditioner uses its vent hose to remove heat, so venting it outside makes the most sense in almost every case. Check out our guide to insulating windows for more ways to keep the heat from coming in. If you can’t get the window to seal completely with its own pressure on the foam, you can also add removable caulking or window sealing tape. You should also make sure you use the foam tape included with your air conditioner on the edges of the bracket to get a tight seal, and check around the vent for drafts. Even if you have to extend the hose longer to make it straighter, bends trap more heat than length does. See the photo above for an example of a hose with too many bends in it. If you find that your AC hose is getting hot, make sure you’re providing the shortest, straightest path for air to travel. The two most common problems with portable air conditioner vents are kinked hoses and leaking window seals. General tips for venting portable air conditioners Below we’ve outlined four other ways to vent a portable air conditioner. ![]() But portable ACs don’t need to vent out a window, so long as you can find another way to send the heat outside. These AC units are like self-contained heat pumps: They collect heat from a room and send it somewhere else through an exhaust vent. To learn more about how and for what purposes Amazon uses personal information (such as Amazon Store order history), please visit our Privacy Notice.We’ve been testing the best portable air conditioners for five years, and we’ve found out all about the versatility and drawbacks of the vent hoses. You can change your choices at any time by visiting Cookie Preferences, as described in the Cookie Notice. Click ‘Customise Cookies’ to decline these cookies, make more detailed choices, or learn more. Third parties use cookies for their purposes of displaying and measuring personalised ads, generating audience insights, and developing and improving products. This includes using first- and third-party cookies, which store or access standard device information such as a unique identifier. If you agree, we’ll also use cookies to complement your shopping experience across the Amazon stores as described in our Cookie Notice. We also use these cookies to understand how customers use our services (for example, by measuring site visits) so we can make improvements. We use cookies and similar tools that are necessary to enable you to make purchases, to enhance your shopping experiences and to provide our services, as detailed in our Cookie Notice.
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