How big is a portable air conditioner?#
A portable air conditioner is a floor-standing tower, 14 to 22 inches wide and 24 to 36 inches tall, that vents out a window through a hose. The table below sorts the single-hose, dual-hose, and compact versions.
Portable air conditioner dimensions by configuration#
| Configuration | Width (in) | Height (in) | Depth (in) | Best for |
|---|---|---|---|---|
| Single-hose portable air conditioner | 16–20 | 28–34 | 13–18 | spot cooling one room |
| Dual-hose portable air conditioner | 18–22 | 30–36 | 15–20 | faster cooling of a larger room |
| Compact portable air conditioner | 14–17 | 24–28 | 12–15 | a small bedroom or office |
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Installation clearances for a portable air conditioner#
- Window clearance: 20–24 in in from the portable air conditioner to the window so the exhaust hose reaches the vent kit.
- Rear clearance: 6–12 in in behind a portable air conditioner so it can pull return air across the coil.
- Vent kit: A portable air conditioner ducts warm air out through a window vent kit trimmed to the sash width.
- Condensate: A portable air conditioner either self-evaporates its condensate or drains it to a nearby pan or floor drain.
Will your portable air conditioner fit? Clearances and door swing#
The placement rule for a rolling AC is set by the window, not a door. Keep the unit within 20 to 24 inches of the window so the exhaust hose can reach the vent kit without stretching or kinking, since a long or bent hose loses cooling. Behind the tower, leave 6 to 12 inches so it can pull return air across the coil freely. The warm exhaust ducts out through a window vent kit that you trim to the sash width, so measure the window opening and confirm the kit fits before setup. Condensate is the last detail: the unit either self-evaporates the moisture out the exhaust or collects it in a pan or drains to a nearby floor drain, so know which model you have. On casters, it rolls between rooms, but each room needs its own window path.
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Portable air conditioner sizes by type: single-hose portable air conditioner, dual-hose portable air conditioner, compact portable air conditioner#
The three versions trade footprint for cooling speed. The single-hose model, 16 to 20 inches wide and 28 to 34 tall, is the common spot cooler for one room, exhausting through a single duct. The dual-hose version is a little larger at 18 to 22 inches wide and 30 to 36 tall, using separate intake and exhaust hoses to cool a bigger room faster and more efficiently. The compact model shrinks to 14 to 17 inches wide and 24 to 28 tall for a small bedroom or office where floor space is tight. Match cooling capacity to the room, then confirm the tower clears its spot near the window.
Portable air conditioner dimensions: common questions#
How tall is a portable air conditioner?#
These towers stand 24 to 36 inches tall. Compact units are shortest at 24 to 28 inches, while dual-hose models reach 30 to 36.
How much clearance does a portable air conditioner need from the window?#
Keep it within 20 to 24 inches of the window so the exhaust hose reaches the vent kit without stretching. A hose pulled taut or bent sharply cuts the cooling.
How wide is a portable air conditioner?#
Widths run 14 to 22 inches. A compact model is narrowest at 14 to 17 inches; a dual-hose unit is widest at 18 to 22.
What is the difference between a single-hose and dual-hose portable unit?#
A single-hose unit uses one duct for exhaust and is simpler, while a dual-hose model adds a separate intake so it cools a larger room faster and more efficiently. The dual-hose version is slightly bigger.
How deep is a portable air conditioner?#
Depth runs 12 to 20 inches. Compact units are shallowest at 12 to 15 inches, and dual-hose models are deepest at 15 to 20.
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