Keystone
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Keystone 8,000 BTU Window Air Conditioner with 3,500 BTU Supplemental Heating, 115V, Window AC Unit with Supplemental Heat for Bedroom, Living Room, Small-Medium Rooms up to 350 Sq.Ft.
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Keystone 8,000 BTU Window Air Conditioner with 3,500 BTU Supplemental Heating, 115V, Window AC Unit with Supplemental Heat for Bedroom, Living Room, Small-Medium Rooms up to 350 Sq.Ft.
Invest in our heat/cool 230V window air conditioner and enjoy year-round comfort for your family.
Keystone 8,000 BTU Window Air Conditioner with 3,500 BTU Supplemental Heating, 115V, Window AC Unit with Supplemental Heat for Bedroom, Living Room, Small-Medium Rooms up to 350 Sq.Ft.
Item #: 230210968

Keystone 8,000 BTU Window Air Conditioner with 3,500 BTU Supplemental Heating, 115V, Window AC Unit with Supplemental Heat for Bedroom, Living Room,

79% of respondents would recommend this to a friend

Item #: 230210968

AUD 723

Price Details

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Invest in our heat/cool 230V window air conditioner and enjoy year-round comfort for your family.
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What Stands Out

Heating & Cooling
This unit offers both 12,000 BTU cooling and 11,000 BTU supplemental heating, making it perfect for year-round comfort in medium-sized rooms up to 550 sq. ft.
Dehumidification
Equipped with a dehumidification function, it effectively reduces humidity levels, enhancing indoor air quality and comfort during hot summer months.
Energy Efficient
Designed with energy efficiency in mind, this air conditioner helps lower utility bills while providing powerful cooling and heating, ideal for budget-conscious consumers.

Product Details

Shop Keystone 8,000 BTU Window Air Conditioner with 3,500 BTU Supplemental Heating, 115V, Window AC Unit with Supplemental Heat for Bedroom, Living Room, Small-Medium Rooms up to 350 Sq.Ft. online at a best price in Tuvalu. B0H6DQQFCG
Cooling Power8000 tbritish thermal units
Additional Features4 Way Swing, Dehumidifier, Filter Light Reminder, Heating & Cooling Function, Remote Controlled
ColorBright White
Noise55 db
RefrigerantR-32
Filter TypeWashable
Inverter TypeNo Inverter
Installation TypeWindow
Compressor Typerotary_scroll
Air Conditioner ApplicationResidential
Core MaterialAluminium Alloy
Voltage115 volts
Power SourceCorded Electric
Wattage1220 watts
Item Dimensions D x W x H18.98"D x 21.46"W x 14.65"H (48.2 x 54.5 x 37.2 cm)
Item Weight60.6 pounds (27.49 kg)
Window Opening Maximum Width36 inches
Window Opening Minimum Height16.5 inches
Window Opening Minimum Width26.8 inches
Capacity1.9 pints
Floor Area350 square_feet
Room TypeBedroom
Form FactorWindow
Number Of Circuits1
Brand NameKeystone
Start Year2023
Model NameKeystone Air Conditioner
Model NumberKSTHW08B
Unit Count1 Count
Included Componentsac, remote, batteries, mesh air filter, window installation kit
Global Trade Identification Number00840148726758
UPC840148726758
ManufacturerKeystone
Item Type NameKeystone 8,000 BTU Window Air Conditioner with 3,500 BTU Heating
Seasonal Energy Efficiency Ratio (SEER)10.9
Annual Energy Consumption1220 watts
Air Flow Efficiency248 cubic_feet_per_minute_per_watt
Control MethodRemote, Touch
Controller TypeRemote Control
Number of Power Levels1
Operating ModeCooling
Heating Capacity3,500 BTU
Number of Heating Elements1
BrandKeystone
Special Feature4 Way Swing, Dehumidifier, Filter Light Reminder, Heating & Cooling Function, Remote Controlled
Product Dimensions (L x W x H)18.98"D x 21.46"W x 14.65"H (48.2 x 54.5 x 37.2 cm)
Start year2023
Noise Level55 db

Who Should Buy?

Suitable For
  • Medium-Sized Rooms

    Ideal for cooling spaces up to 550 sq. ft., such as living rooms or larger apartments.

  • Year-Round Use

    Provides both cooling and supplemental heating, making it suitable for various seasons and climates.

  • Humidity Control

    Features dehumidification capabilities, which is beneficial for damp environments or areas with high humidity.

Not Suitable For
  • Small Spaces

    Inefficient for small rooms under 250 sq. ft. as it may cause excessive cooling and energy wastage.

Product Description

Keystone 8,000 BTU Window Air Conditioner with 3,500 BTU Supplemental Heating, 115V, Window AC Unit with Supplemental Heat for Bedroom, Living Room, Small-Medium Rooms up to 350 Sq.Ft.

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What is the cooling capacity of the Keystone 12,000 BTU Window Air Conditioner?

    Answer: The Keystone 12,000 BTU Window Air Conditioner is designed to effectively cool spaces up to 550 sq. ft. This high cooling capacity makes it suitable for medium to large rooms such as living rooms and apartments. The air conditioner uses advanced technology to provide a consistent temperature throughout the space, ensuring a comfortable environment even during the hottest days.
  • Question: Does the Keystone air conditioner provide supplemental heating?

    Answer: Yes, this unit includes an 11,000 BTU supplemental heating feature. This dual functionality allows it to effectively cool in the summer while also providing warmth during colder months. It is ideal for those who want a versatile climate control system, making it an excellent choice for year-round use in spaces like living rooms and bedrooms.
  • Question: What dehumidification capabilities does this air conditioner have?

    Answer: The Keystone air conditioner offers effective dehumidification features that help remove excess moisture from the air, creating a more comfortable environment. This is particularly beneficial in humid climates or during the summer months, as it helps prevent mold and mildew growth while also enhancing overall indoor air quality.
  • Question: Is the Keystone air conditioner suitable for my apartment?

    Answer: Absolutely! The Keystone 12,000 BTU Window Air Conditioner is ideal for apartments or small homes, effectively cooling areas up to 550 sq. ft. Its compact design allows it to fit in various window types, ensuring that even limited spaces can enjoy optimal climate control without compromising on performance.
  • Question: What voltage does the Keystone air conditioner operate on?

    Answer: This air conditioner operates on a 230V electrical system, which is required for its efficient performance. This voltage requirement is commonly found in many regions, so it's important to ensure that your electrical setup matches this specification for optimal usage and energy efficiency.
  • Question: How does the energy efficiency of this air conditioner compare?

    Answer: The Keystone air conditioner features a high energy efficiency ratio (EER), which means it provides powerful cooling while consuming less energy than many other models. This efficiency helps reduce electric bills while providing a comfortable indoor climate, making it a smart choice for budget-conscious consumers.
  • Question: Can I use the air conditioner and heater simultaneously?

    Answer: No, the air conditioning and heating functions of the Keystone unit cannot operate at the same time. However, you can easily switch between modes depending on the seasonal need. This flexibility allows you to maintain a comfortable environment in both winter and summer, enhancing its utility throughout the year.
  • Question: What are the noise levels like when the unit is operating?

    Answer: The Keystone air conditioner operates at a relatively quiet noise level, making it suitable for bedrooms and living rooms. Ideal for nighttime use, its sound levels are designed to be low without compromising performance, allowing you to enjoy a peaceful atmosphere while staying comfortable.
  • Question: How do I install the Keystone window air conditioner?

    Answer: Installation of the Keystone window air conditioner is straightforward; it comes with a detailed instruction manual. Typically, it requires secure mounting in a window frame, ensuring that it is level for optimal operation. It's recommended to have an extra pair of hands for installation, which can save time and simplify handling.
  • Question: Where can I buy the Keystone 12,000 BTU Window Air Conditioner?

    Answer: You can purchase the Keystone 12,000 BTU Window Air Conditioner at Ubuy in Tuvalu. Ubuy offers a convenient platform for browsing, ordering, and delivering the unit to your desired location, ensuring a seamless shopping experience for customers looking for effective climate control solutions.

Keystone Window KSTHW08B Editorial Review

The customer reception of this product presents a mixed experience, highlighting both its benefits and significant drawbacks. Many users appreciate the unit's dual functionality, providing both heating and cooling capabilities, making it an attractive option for those looking for a versatile appliance. It has been noted for its efficacy in rapidly heating and cooling spaces, which many users have found beneficial for specific applications, such as sheds or larger rooms. However, the reception is marred by concerns over the product's noise level and Construction quality. Several customers reported that the unit operates louder than expected, with some mentioning clanging sounds that suggest potential issues with durability. Additionally, multiple reviews cite problems with the installation process and the physical integrity of the product, such as broken panels and screws that were not properly secured. Issues with the heating performance have also been raised, with some users stating that the unit does not adequately warm spaces unless set to high temperatures. While some customers express satisfaction with their purchase, particularly those who have successfully utilized the unit for both heating and cooling, the dissatisfaction stemming from noise and quality control issues cannot be overlooked. **

Customer Reviews & Ratings

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Pros

  • Provides both heating and cooling functions efficiently.
  • Quick temperature adjustments, making spaces comfortable rapidly.
  • Ideal for workshops and out buildings, not requiring floor space.

Cons

  • Noise level complaints, including clanging sounds and general loudness.

Platform Trust & Buyer Confidence

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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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“Wonderful online shopping experience, smooth transaction from the start. Payment method works conveniently and delivery is unexpectedly fast and reliable. You go the extra mile for service. What makes this even more amazing, you deliver to Namibia. I will remain a happy Ubuy customer and will increase my purchases for sure! Thank you!”

10 September 2026 · via Trustpilot
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“Very easy to find the products what you need, and so fast delivery, that’s why I highly recommended to others costumers to used ubuy.”

10 September 2026 · via Trustpilot
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Opaleye
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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Adele
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

AUD 723

Order now and get it around Wednesday, October 07

QTY:

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Fastest cross-border delivery

Features & Benefits

  • Designed for comfort, providing cooling and supplemental heating.
  • Energy-saving modes help lower costs and customize preferences.
  • Includes an easy installation kit for straightforward setup.
  • Powerful 12,000 BTU cooling for spaces up to 550 Sq.Ft.
  • Convenience features like programmable timers and remote control.
  • Ensures comfort in all seasons with reliable performance.

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