![]() 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. Just to confuse things, often the T in BSPT refers to Thread and doesn't indicate either Taper or Parallel.ġ/4 Inch BSP - Compressed air connectors.ģ/8 Inch BSP - Central heating oil line connectors, some European toilet cistern fill valves (not common in UK).ġ/2 Inch BSP - Bathroom basin taps and kitchen sink taps, radiator connections, shower hoses, old outside tap outlets, toilet cistern fill / float valves.ĥ/8 Inch BSP - Old outside tap outlets (we have an adaptor for this size).ģ/4 Inch BSP - Bath taps, washing machine inlet hose connections, modern outside tap outlets.ħ/8 Inch BSP - Outlet thread on 3/4 inch outside tap (we have a 7/8 inch BSP brass garden hose connector).ġ Inch BSP - Domestic heating boilers and hot water cylinders, urinal flush valves.ġ-1/4 Inch BSP - Wash hand basin wastes (bathroom sink).ġ-1/2 Inch BSP - Kitchen sink wastes, bath wastes, toilet syphon outlets, central heating pumps.Ģ-1/4 Inch BSP - Immersion water heater elements.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. These are sometimes denoted by the letter R, for example R 1/2" means a taper 1/2 inch BSP thread. Taper threads, British Standard Pipe Taper thread (BSPT). These are sometimes denoted by the letter G, for example G 1/2" means a parallel 1/2 inch BSP thread. ![]() Parallel (straight) threads, British Standard Pipe Parallel thread (BSPP). This is the source of the confusion, as people incorrectly think the size refers to the outside diameter of the male thread. The size was originally based on the inside diameter, measured in inches, of a steel pipe for which the thread was intended. For example a 1/2 inch BSP thread (see above) actually measures more like 3/4 inch with a ruler. The threaded part(s) of plumbing fittings are usually made to a British Standard Pipe Thread size (BSP).īSP sizes don't match up with what you measure on the scale of a ruler, which can obviously cause some confusion.
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