5 Best Conventional Window Air Conditioners with Reusable Filters of 2026
If you're tired of buying disposable air conditioner filters, these conventional window units offer a convenient, washable alternative. We compare models based on cooling power, noise, and energy efficiency to help you choose.
By Daniel Brooks
Updated October 7, 2026
Choosing conventional window air conditioners with reusable filters is a practical decision for maintaining indoor air quality and reducing long-term maintenance costs. These units combine essential cooling power with the convenience of a washable filter that traps dust and pollen, which you can clean rather than replace each season. This guide is for anyone cooling a bedroom, home office, or small living area who values straightforward operation and easy upkeep. For a broader look at this category, visit our Conventional Window Air Conditioners page.
We compared five models based on manufacturer specifications for cooling capacity, energy efficiency, and noise output. The key factors for this category include finding a unit that properly fits your window, provides adequate BTU output for your room size, and operates quietly enough for sleeping or working. A reusable filter adds value by simplifying annual maintenance and ensuring consistent airflow through a clean screen.
All Products Compared
| Product | Best For | Cooling Capacity | Room Size | Noise | Notable Feature |
|---|---|---|---|---|---|
| Midea 5,000 BTU EasyCool Window Air Conditioner | Best Overall | 5,000 BTU | 150 sq ft | Quieter than a refrigerator | CEER 11.0, 7 temperature settings |
| Della 5,000 BTU Window Air Conditioner | Quiet operation | 5,000 BTU | 150 sq ft | 51-55 dB | Compact design, 2 fan speeds |
| GE 5,000 BTU Window Air Conditioner | Best Value | 5,000 BTU | 150 sq ft | 52-56 dBA | Auto restart, 10 temperature settings |
| TCL 6,000 BTU Window Air Conditioner | Larger rooms | 6,000 BTU | 250 sq ft | Not listed | 3-in-1 function, remote control |
| Duck 24-Inch x 15-Inch x 1/4-Inch Replacement Foam Filter | Filter replacement | Not applicable | Not applicable | Not applicable | Washable, reusable polyurethane foam |
| Award | Product | WikiCooling Score About WikiCooling ScoreThe WikiCooling Score is our own rating from 0 to 10, based on the criteria described on our How We Review page. It reflects research, not laboratory measurement, and is never influenced by manufacturers, retailers, or affiliate commissions. Learn more › | |
|---|---|---|---|
| Best Premium |
Midea 5,000 BTU EasyCool Window Air Conditioner
|
8.4/10 | Buy |
| Best Value |
Della 5,000 BTU Window Air Conditioner
|
7.8/10 | Buy |
| Best Budget |
GE 5,000 BTU Window Air Conditioner
|
7.6/10 | Buy |
TCL 6,000 BTU Window Air Conditioner
|
7.5/10 | Buy | |
| Best Overall |
Duck 24-Inch x 15-Inch x 1/4-Inch Replacement Foam
|
8.6/10 | Buy |
Midea 5,000 BTU EasyCool Window Air Conditioner
This small window air conditioner is a mechanically controlled unit designed for cooling spaces up to 150 square feet. It offers a straightforward installation process and a washable filter for simple maintenance, making it a practical, budget-friendly option for rooms like bedrooms and home offices.
Pros
- Effective cooling capacity for its recommended room size.
- Mechanical controls are simple and intuitive to operate.
- Energy efficiency rating of CEER 11.0.
- Includes a washable and reusable filter.
- Comes with a 1 Year Parts & Labor Warranty.
Cons
- No remote control or smart features.
- Fixed installation requirements suit specific window sizes only.
- Operates at 57 db, which some buyers mention is noticeable.
Della 5,000 BTU Window Air Conditioner
This 5,000 BTU window air conditioner from Della is designed for small spaces up to 150 square feet. Its quiet operation and energy-efficient design help keep cooling costs low while providing fast temperature control. The simple rotary controls make it easy to adjust settings without a remote.
Pros
- Quiet operation (51-55 dB)
- Energy efficient (CEER 11.0)
- Easy rotary controls
- Compact and lightweight
- Reusable filter
Cons
- No remote control
- Manual swing only
- Non-inverter compressor
GE 5,000 BTU Window Air Conditioner
A budget-friendly window AC for small spaces up to 150 square feet, this GE unit uses simple mechanical controls and two cooling modes. It operates quietly at 52-56 dBA, making it suitable for bedrooms and dorm rooms. Easy DIY installation fits double-hung windows 27 to 36 inches wide.
Pros
- Quiet operation at 52-56 dBA
- Easy mechanical controls, no setup
- Washable filter, low maintenance
- Low power draw at 440 watts
- Fits narrow windows down to 27 inches
Cons
- Fits only double-hung windows
- No smart or remote control features
- May need wider side panels for extra-wide windows
TCL 6,000 BTU Window Air Conditioner
This TCL window unit cools up to 250 square feet with 6,000 BTU of cooling power and also functions as a fan and dehumidifier. It offers Sleep and Eco modes for energy savings, a washable filter, and convenient remote control. Suitable for small rooms, though some users report noise and temperature control inconsistencies.
Pros
- Cools rooms up to 250 sq. ft.
- 3-in-1 functionality (AC, fan, dehumidifier)
- Washable filter reduces maintenance
- Sleep and Eco modes for energy savings
- Auto Restart after power loss
Cons
- No inverter compressor can lead to noisier operation
- Some reports of water dripping and loud noise after months of use
- Temperature control may not maintain set point precisely
Duck 24-Inch x 15-Inch x 1/4-Inch Replacement Foam
This replacement filter from Duck is made of washable and reusable polyurethane foam that can be cut to fit most window air conditioning units. It helps remove dust and pollen from the air, keeping your AC running efficiently. A budget-friendly option for those who want a reusable filter.
Pros
- Washable and reusable
- Cut to fit any window AC
- Removes dust and pollen
- Two pieces included
- Affordable price
Cons
- Only 1/4 inch thick
- May not fit all AC models
- Requires cutting to size
Top 3 Conventional Window Air Conditioners with Reusable Filters Reviewed
#1 Midea 5,000 BTU EasyCool Window Air Conditioner: Best Overall
Why We Picked It
The Midea 5,000 BTU EasyCool Window Air Conditioner earns the top spot for its balance of efficiency, user-friendly controls, and proven reliability, backed by over 12,000 ratings. Its 5,000 BTU cooling capacity is precisely matched for rooms up to 150 square feet, making it an ideal fit for most small bedrooms or home offices. The unit includes a reusable air filter, aligning with the core requirement of this guide, and features a Combined Energy Efficiency Rate (CEER) of 11.0, which indicates lower annual energy consumption compared to less efficient models.
We evaluated it against the other picks for its operational quietness, noted as quieter than a household refrigerator, and its straightforward mechanical controls with seven temperature settings. This combination of adequate cooling power, energy savings, and simple maintenance via its washable filter makes it a strong all-around choice. It provides a more established performance history than the Della model and includes more granular temperature control than the basic GE unit, solidifying its position as the best overall conventional window air conditioner with a reusable filter in this lineup.
Key Specifications
- Cooling Capacity: 5,000 BTU
- Room Size: Up to 150 sq ft
- Energy Efficiency: CEER 11.0
- Noise Level: Quieter than a refrigerator
- Controls: Mechanical with 7 temperature settings
| Pros | Cons |
|---|---|
|
|
Things to Consider
This unit is designed for double-hung windows between 23 and 36 inches wide with a minimum height of 13 inches. Its fixed chassis installation requires a screwdriver and, for some window frames, pre-drilled pilot holes are recommended. Before purchase, confirm your exact window measurements and ensure you have the necessary tools for a secure installation as outlined in the manual.
Best For
This air conditioner is best for users seeking a reliable, energy-efficient cooling solution for a small bedroom or office. It suits those who prefer simple mechanical dials and value a unit with a strong track record of customer satisfaction.
You can find the Midea 5,000 BTU EasyCool Window Air Conditioner on Amazon.
#2 Della 5,000 BTU Window Air Conditioner: Best for Quiet Operation
Why We Picked It
The Della 5,000 BTU Window Air Conditioner is selected for its explicitly low noise output, which is a critical factor for light sleepers or focused work environments. Its noise level is specified between 51 and 55 decibels, comparable to a quiet conversation, and it is noted as quieter than a household refrigerator. This makes it a compelling option for bedrooms where nighttime disturbance is a primary concern. Like our top pick, it cools spaces up to 150 square feet and features a reusable filter for easy maintenance.
We compared its specifications to the Midea and GE models, noting it shares the same CEER rating of 11.0 for energy efficiency. Its compact dimensions and slightly different window fit requirements offer an alternative for specific installations. While it has fewer user reviews than the Midea unit, its defined noise rating provides a measurable advantage for prioritizing quiet cooling. It represents a focused choice where acoustic performance is valued alongside standard cooling capacity and filter reusability.
Key Specifications
- Cooling Capacity: 5,000 BTU
- Room Size: Up to 150 sq ft
- Energy Efficiency: CEER 11.0
- Noise Level: 51-55 dB
- Window Fit: 23 to 34 inches wide, 14.5″ min height
| Pros | Cons |
|---|---|
|
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Things to Consider
The unit requires a window with a minimum height of 14.5 inches, which is slightly more than some other 5,000 BTU models. Its compact size of 15.98 inches wide suits narrower windows but verify your window’s full opening dimensions against the specified range of 23 to 34 inches wide before purchasing to ensure a proper fit.
Best For
This model is best for cooling a small bedroom or study where low operational noise is a top priority. It is ideal for users who need a unit for a suitably sized window and appreciate a compact physical footprint.
Check the Della 5,000 BTU Window Air Conditioner for more details.
#3 GE 5,000 BTU Window Air Conditioner: Strong All-Round Pick
Why We Picked It
It effectively cools rooms up to 150 square feet, matching the capacity of the higher-ranked picks. Its key features include an auto-restart function after a power outage and ten temperature settings, providing more granular control than some basic units. The inclusion of a washable, reusable filter aligns it with the central theme of low-maintenance, cost-effective operation.
When evaluated against the Midea and Della models, it presents a straightforward alternative with reliable GE branding. It offers two cooling modes with different noise levels, 52 dBA for nighttime and 56 dBA for rapid cooling, giving users flexibility based on the time of day. While it may have a slightly lower efficiency rating than some competitors (its specific CEER is not listed), its combination of essential features, proven brand reputation, and accessible price makes it a strong value proposition for budget-conscious buyers who still require a reusable filter.
Key Specifications
- Cooling Capacity: 5,000 BTU
- Room Size: Up to 150 sq ft
- Noise Level: 52-56 dBA
- Controls: Mechanical with 10 temperature settings
- Feature: Auto restart after power outage
| Pros | Cons |
|---|---|
|
|
Things to Consider
This unit is designed for double-hung windows between 27.125 and 36 inches wide with a minimum height of 13.375 inches. Its fixed chassis and specific size requirements mean you must measure your window accurately. The manufacturer states no manual draining is required under normal conditions, simplifying maintenance.
Best For
This air conditioner is best for buyers seeking an affordable, brand-name unit with useful features like auto-restart for a small bedroom or dorm room. It suits those who want multiple temperature options and a dedicated quiet mode.
Learn more about the GE 5,000 BTU Window Air Conditioner.
How to Choose a Conventional Window Air Conditioner
Match Cooling Capacity to Your Room
Selecting the correct British Thermal Unit (BTU) rating is the most critical step for effective and efficient cooling. An undersized unit will run constantly without properly cooling the room, while an oversized unit will cool too quickly without adequately dehumidifying, leading to a cold, clammy feel and wasted energy. Always use the square footage of the room you intend to cool as your starting point.
ENERGY STAR publishes this general guide for sizing a room air conditioner by floor area:
| Room Size (sq ft) | Cooling Capacity (BTU/hr) |
|---|---|
| 100 to 150 | 5,000 |
| 150 to 250 | 6,000 |
| 250 to 300 | 7,000 |
| 300 to 350 | 8,000 |
| 350 to 400 | 9,000 |
| 400 to 450 | 10,000 |
| 450 to 550 | 12,000 |
| 550 to 700 | 14,000 |
| 700 to 1,000 | 18,000 |
Adjust for your room: reduce capacity by 10 percent for a heavily shaded room, increase it by 10 percent for a very sunny room, add 600 BTU for each regular occupant beyond two, and add 4,000 BTU if the unit cools a kitchen. Source: ENERGY STAR.
Window Fit and Installation
Every window air conditioner lists specific dimensions for the window opening it requires. This includes both a width range (e.g., 23 to 36 inches) and a minimum height. Measure the inside of your window frame precisely before purchasing. Installation typically involves mounting a chassis into the window sill, extending side panels to fill gaps, and securing the unit with included brackets. Most models come with an installation kit, but you will often need a screwdriver. Always follow the manufacturer’s manual for a safe, secure fit.
Noise and Inverter Compressors
Noise level, measured in decibels (dB or dBA), is especially important for bedrooms or quiet spaces. Conventional units with standard compressors have a fixed cooling speed; they turn on at full power until the set temperature is reached, then turn off. This cycle can create noticeable sound variations. Some models offer a “quiet” or “sleep” mode that runs the fan at a lower speed. For the quietest operation, look for a specified decibel rating, like the Della model’s 51-55 dB, which indicates its sound output during operation.
Energy Efficiency
Energy efficiency for room air conditioners is measured by the Combined Energy Efficiency Ratio (CEER). A higher CEER number means the unit provides more cooling power (BTUs) for each watt of electricity it consumes, leading to lower operating costs. For example, the Midea and Della models listed have a CEER of 11.0. While not all models list this rating, choosing one with a higher CEER can lead to savings on your energy bill over the lifespan of the unit. Look for this figure in the product specifications when comparing models.
Controls and Maintenance
Conventional window units typically use mechanical rotary dials or basic electronic buttons to control temperature and fan speed. Mechanical controls are simple and reliable. The key maintenance task for the units in this guide is cleaning the reusable air filter. A clogged filter restricts airflow, reducing cooling efficiency and making the unit work harder. Most filters can be rinsed with water, dried, and reinserted. Regular cleaning, as recommended in the manual, maintains air quality and unit performance. For more control options, explore our guide on conventional window air conditioners with digital controls.
How We Evaluate Conventional Window Air Conditioners
Our evaluation is based on a direct comparison of manufacturer-provided specifications and listing information. For this guide on conventional window air conditioners with reusable filters, we prioritized verified cooling capacity (BTU) against recommended room size, the presence of a washable filter, stated energy efficiency (CEER), and noise output. We weigh installation requirements, such as window dimensions and included hardware, to assess practical fit. User rating counts provide a signal of reliability and customer experience, but we do not paraphrase individual reviews. We advise readers to always confirm the unit’s electrical requirements and exact physical dimensions against their room and window before purchasing.
Frequently Asked Questions
What size room is a 5,000 BTU air conditioner good for?
According to the ENERGY STAR sizing chart, a 5,000 BTU air conditioner is generally suitable for cooling a room between 100 and 150 square feet. This typically covers a small bedroom, home office, or dorm room. All three 5,000 BTU models in this guide, like the Midea EasyCool, are listed for rooms up to 150 square feet.
How do I clean the reusable filter?
Reusable filters are designed for easy maintenance. Typically, you remove the filter from the front grille of the air conditioner, rinse it under lukewarm water to remove dust and debris, and allow it to air dry completely before reinstalling. Refer to your specific model’s manual for detailed instructions, as some filters may be gently vacuumed instead. Regular cleaning, often recommended monthly during peak use, ensures optimal airflow and cooling efficiency.
Will a window air conditioner be too loud for a bedroom?
Noise tolerance is subjective, but many modern units are designed for quieter operation. Look for models that specify a decibel rating or mention a “quiet” or “sleep” mode. For example, the Della unit operates at 51-55 dB, and the GE model has a dedicated 52 dBA low setting for nighttime. Placing the unit in a properly sized window and ensuring it is securely installed can also minimize vibration noise.
What if my window is an unusual size?
Each air conditioner model has strict minimum and maximum window dimensions for safe installation. If your window opening falls outside the listed range for a unit, it will not fit properly and could be unsafe. Always measure the height and width of your window opening and compare it to the “window fit” specifications in the product manual before purchasing. Using an incorrectly sized unit can lead to poor performance, energy waste, and potential security risks.
Do I need a special electrical outlet?
Most small 5,000-6,000 BTU window air conditioners, like those featured, plug into a standard 115-volt household outlet. However, they often draw significant power. It is crucial to check the unit’s listed amperage and ensure the outlet is on a dedicated circuit or one not heavily loaded with other appliances to prevent tripping a breaker. Always follow the manufacturer’s electrical requirements for safe operation.
Final Verdict
The Midea 5,000 BTU EasyCool Window Air Conditioner stands out as our top recommendation for its proven balance of efficient cooling, energy savings, and user-friendly operation, all supported by a high volume of positive feedback. Its reusable filter and straightforward mechanical controls make it a reliable and low-maintenance choice for cooling a small room. For buyers primarily concerned with minimizing sound, the Della model with its specified low decibel rating is an excellent alternative.
Ultimately, the key to satisfaction with any conventional window air conditioner is ensuring a precise match between the unit’s cooling capacity and your room size, and confirming that your window’s dimensions fall within the model’s required installation range. By prioritizing these factors alongside the convenience of a reusable filter, you can select a cooling solution that delivers comfort and value for seasons to come.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.