Finding the ideal 5000 BTU through-the-wall air conditioner can help you cool small to medium rooms efficiently without sacrificing space or aesthetics. These units are perfect for bedrooms, apartments, and offices where window units may not fit or where a sleek, built-in look is preferred. Below is a summary table featuring the top air conditioners suitable for smaller spaces along with a selection of larger units for comparison.
| Product | Brand | BTU | Room Size Coverage | Cooling Speeds | Special Features |
|---|---|---|---|---|---|
| GE Window Air Conditioner | GE | 5,000 | Up to 150 sq ft | Manual Adjustable | Low noise, easy install kit included |
| Frigidaire 5,000 BTU Window-Mounted Air Conditioner | Frigidaire | 5,000 | Up to 250 sq ft | 2 fan speeds | Quiet operation, washable filter |
| LG 10,000 BTU Through the Wall Air Conditioner | LG | 9,800 | Up to 440 sq ft | 3 cooling speeds | Energy efficient refrigerant, dry mode, 4-way air deflection |
| TCL H12T9E1-A 12,000 Smart Through-The-Wall AC | TCL | 12,000 | Up to 550 sq ft | Multiple speeds | Smart home compatible, built-in dehumidifier |
| BLACK+DECKER 18,000 BTU Window or Through The Wall AC | BLACK+DECKER | 18,000 | Up to 1,000 sq ft | 3 cooling speeds | Full function remote, 24-hour timer |
Content Navigation
- GE 5,000 BTU Window Air Conditioner For Small Rooms
- Frigidaire 5,000 BTU Window-Mounted Air Conditioner For Medium Rooms
- LG 10,000 BTU Through The Wall Air Conditioner For Larger Rooms
- TCL 12,000 BTU Smart Through-The-Wall Air Conditioner with Dehumidifier
- BLACK+DECKER 18,000 BTU Window/Through The Wall Air Conditioner
- Buying Guide for 5000 BTU Through-The-Wall Air Conditioners
GE 5,000 BTU Window Air Conditioner For Small Rooms

The GE 5000 BTU Window Air Conditioner is designed specifically for small spaces up to 150 square feet, ideal for bedrooms or tiny apartments. It includes a manual adjustable fan and cooling settings, providing flexibility for different cooling needs. The unit supports a low-noise operation, making it suitable for nighttime use without disturbing sleep. Plus, an easy install kit comes with the unit so you can get it set up quickly without additional purchases or tools. Its compact design allows for efficient cooling while saving space.
Frigidaire 5,000 BTU Window-Mounted Air Conditioner For Medium Rooms

This Frigidaire 5,000 BTU Window-Mounted AC cools up to 250 square feet and offers quiet performance at just 52 decibels, ideal for bedrooms or small living areas. It includes effortless temperature control and two fan speeds for customizable comfort. Its washable filter makes maintenance easy, helping it maintain optimal efficiency by trapping dust and allergens. The unit also supports auto-restart after power outages, ensuring continued comfort without intervention.
LG 10,000 BTU Through The Wall Air Conditioner For Larger Rooms

The LG 10,000 BTU Through The Wall Air Conditioner is energy efficient and designed to cool spaces up to 440 square feet. It uses R-32 refrigerant with an EER of 10.7, making it environmentally friendly and power-saving. It comes with three cooling speeds and three pre-programmed modes including energy saver and dry modes that regulate moisture. Additionally, 4-way air deflection provides flexible airflow direction. The unit includes a remote for convenient control from anywhere in the room.
TCL 12,000 BTU Smart Through-The-Wall Air Conditioner with Dehumidifier

The TCL H12T9E1-A smart wall air conditioner offers powerful 12,000 BTU cooling coverage up to 550 square feet. Featuring a built-in dehumidifier, it allows you to reduce humidity and improve air quality, perfect for humid climates. It supports voice control via Amazon Alexa and Google Assistant, making it compatible with smart homes. You can adjust temperatures and fan speeds through voice commands or the included remote, enhancing convenience and customization.
BLACK+DECKER 18,000 BTU Window/Through The Wall Air Conditioner

The BLACK+DECKER 18,000 BTU Window or Through-The-Wall AC is designed for larger rooms and spaces up to 1,000 square feet. It offers multiple operational settings including auto, low, medium, and high fan speeds to ensure even cooling. The full-function remote includes additional features such as sleep mode, an energy saver, and a 24-hour timer. This unit is perfect for whole floors, offices, or living areas needing powerful cooling capacity.
Buying Guide for 5000 BTU Through-The-Wall Air Conditioners
Choosing the perfect 5000 BTU through-the-wall air conditioner involves multiple considerations to ensure efficient cooling, durability, and seamless integration with your space. Here are key factors to evaluate:
Cooling Capacity and Room Size
A 5,000 BTU AC unit typically cools up to 150-250 square feet effectively, suitable for bedrooms or small offices. For larger areas, consider units with higher BTUs. Accurate room measurement ensures you don’t under or over-purchase cooling power, which affects efficiency and energy use.
Installation Type
Through-the-wall units require a proper wall sleeve and professional installation that ensures a secure sealed fit. Some models are convertible for window or wall use but always check specifications. Installation complexity varies, so research if you need professional help or DIY-friendly units.
Energy Efficiency and Refrigerant Type
Energy efficiency ratio (EER) ratings and refrigerant types like R-32 or R410a impact operating costs and environmental footprint. Units with higher EER are more energy-efficient. Modern refrigerants are less harmful to the environment and improve cooling performance.
Noise Levels
Noise tolerance varies by location and use – bedrooms require quieter units (under 55 dBA) for comfortable sleep. Review product specifications for noise ratings to avoid disruptive operation.
Additional Features
- Fan Speeds and Modes – More speed options allow customized airflow and comfort.
- Remote Control – Convenience of adjusting settings without approaching the unit.
- Dehumidification – Helps reduce indoor humidity and improve air quality.
- Sleep or Energy Saver Modes – Optimize power use during different periods.
- Filter Maintenance – Washable or easy-to-replace filters improve AC longevity and air quality.
Smart Home Compatibility
Some newer models support smart devices like Alexa and Google Assistant, enabling voice commands and remote operation. This adds convenience and modernizes climate control.
By considering these varied factors alongside your specific space requirements, you can select the most appropriate 5000 BTU through-the-wall air conditioner that balances performance, comfort, and energy efficiency.