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Is a window air conditioner patented?

Short answer: specific designs of a window air conditioner have been patented many times, but "a window air conditioner" as a general idea is not what is protected. What matters is the exact combination of features in your version.

What our index shows
  • 872 US and WO patent publications since 2000 have a title matching “windowportable air condition” or a close variant (our index of 9.7 million patent families; one publication per family).
  • Among the 155 best keyword matches we examined, 121 were published in 2020 or later, and the earliest was published in 2002.
  • Most frequent assignees in those matches: GD MIDEA AIR CONDITIONING EQUIPMENT CO LTD (46), QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD (15), HISENSE GUANGDONG AIR CONDITIONING CO LTD (14), WUHU MATY AIR CONDITIONING EQUIPMENT CO LTD (14).
  • Most common patent classes (CPC subclasses): F24F (149), F25B (12), Y02B (9), E06B (7).

Counts come from keyword matching on titles and abstracts, so they are indicative, not a legal count. Some matches are different products that share a word.

14 real patent publications related to a window air conditioner

  1. Window air conditioner US-2025341319-A1 2025 · WUHU MATY AIR CONDITIONING EQUIPMENT CO LTD
    A window air conditioner includes an outdoor unit body configured to be arranged at an outdoor side of a window opening, an indoor unit component including an indoor unit body configured to be arranged at an indoor side of the win…
    View on Google Patents
  2. Shielding assembly and window air conditioner assembly US-2025334278-A1 2025 · HISENSE GUANGDONG AIR CONDITIONING CO LTD
    A shielding assembly is configured to be mounted on at least one side of the window air conditioner to shield a gap between a window and the window air conditioner. The shielding assembly includes a first shielding plate and a sec…
    View on Google Patents
  3. Positional guides for saddle window air conditioner US-12339016-B2 2025 · HAIER US APPLIANCE SOLUTIONS INC
    A saddle window air conditioner includes an indoor module, an outdoor module, and a chaseway extending between the modules. The chaseway includes an outer sleeve having a first end and a second end spaced from the first end, a top…
    View on Google Patents
  4. Window air conditioner WO-2024169219-A1 2024 · HISENSE GUANGDONG AIR CONDITIONING CO LTD
    A window air conditioner (100), comprising a housing (10), a compressor (50), a motor support (64), a fan assembly (60), and a liquid storage tank (51). The compressor (50) is arranged in the housing (10). The motor support (64) c…
    View on Google Patents
  5. Saddle-type window air conditioner WO-2024031957-A1 2024 · QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
    Disclosed in the present invention is a saddle-type window air conditioner, wherein an indoor heat exchanger and a water-receiving tray are provided in an indoor unit; an outdoor heat exchanger, a compressor and a drainage pump ar…
    View on Google Patents
  6. Window air conditioner and curtain assembly US-2024183570-A1 2024 · HAIER US APPLIANCE SOLUTIONS INC
    An air conditioner assembly for installation at a window assembly is provided. The air conditioner assembly includes an air conditioning unit fixable to the window assembly. The air conditioning unit includes a housing having a si…
    View on Google Patents
  7. Window air conditioner sealing device US-11680716-B2 2023 · GD MIDEA AIR CONDITIONING EQUIPMENT CO LTD
    A window air conditioner includes a casing including a cabinet. The cabinet includes a receiving groove formed at an outer peripheral wall of the cabinet. The receiving groove is recessed downwards to separate the cabinet into an …
    View on Google Patents
  8. Window air conditioner WO-2023202191-A1 2023 · QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
    Disclosed in the present invention is a window air conditioner, comprising an indoor unit located on an indoor side, an outdoor unit located on an outdoor side, and a saddle structure connected to the indoor unit and the outdoor u…
    View on Google Patents
  9. Pipeline stress testing method applied to saddle type window air conditioner, and saddle type window air conditioner WO-2023246143-A1 2023 · QINGDAO HAIER AIR CONDITIONER GENERAL CORP LTD
    A pipeline stress testing method applied to a saddle type window air conditioner. The saddle type window air conditioner comprises an indoor unit (100), an outdoor unit (200) and a retractable saddle bridge structure (300), wherei…
    View on Google Patents
  10. Method for controlling window air conditioner US-11236921-B2 2022 · GD MIDEA AIR CONDITIONING EQUIPMENT CO LTD
    A method for controlling an air conditioner includes, after the air conditioner is turned on, controlling an indoor ambient temperature sensor, an indoor heat exchanger temperature sensor, an outdoor heat exchanger temperature sen…
    View on Google Patents
  11. Window air conditioner WO-2019109395-A1 2019 · GD MIDEA ARI CONDITIONING EQUIPMENT CO LTD
    A window air conditioner (100) comprises: a housing (10); a compressor (20); and an electric control box (30). The housing (10) comprises a first side plate (11) and a second side plate (12) which are opposite to each other. The c…
    View on Google Patents
  12. Intense field dielectric purifier placement on a split or window air conditioner US-2018180305-A1 2018 · ELECTROLUX AB
    Disclosed is a wall-mounted air conditioner, comprising: an air conditioner main body, configured to be installed on an installation surface; and an IFD dust removal apparatus, arranged at an air inlet of the air conditioner main …
    View on Google Patents
  13. Window air conditioner US-9182135-B2 2015 · ROTHFUSS CHRIS
    Technologies are generally described for a window and a method for cooling a room including a window. In some examples, the window may include a first pane and a second pane spaced from and in optical communication with the first …
    View on Google Patents
  14. Window air conditioner with a fire alarm and smoke exhausting device US-2003126869-A1 2003
    A window air conditioner with a fire alarm and smoke-exhausting device includes a body, a front room in said body, a wind-releasing gate and a smoke-exhausting gate provided at a side of the front room, an alarm in the body, a sen…
    View on Google Patents

What this means for your idea

Because patents cover specific combinations of features, the useful question is not “has a window air conditioner been patented?” but “has my combination of features been described before?” Household products tend to differ in the mechanism (how something attaches, folds, dispenses or cleans) rather than the basic idea.

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Guides that help with this

First-look landscape. Not exhaustive. Not legal advice. This page lists keyword-matched publications from a limited database; it does not say whether any product is or isn't covered by a patent, whether a patent is still in force, or whether your idea is patentable. Consult a registered patent attorney or agent.