Finding an air conditioner for swing out windows can be challenging, as most traditional window AC units are designed for vertical or double-hung windows. However, with innovative options and careful planning, homeowners can efficiently cool rooms with crank, casement, or awning windows. This guide helps you explore the top solutions, features to consider, installation tips, and the latest available models suitable for swing out windows, ensuring comfort tailored to your home’s unique architecture.
What Are Swing Out Windows?
Swing out windows refer to window styles that open outward on a hinge, including casement and awning windows. These are distinct from standard vertical-sliding windows and are found in many American homes, especially those seeking better ventilation and unobstructed views. Yet, their unique construction poses challenges for standard window AC installation.
Summary Table: Types Of Air Conditioners For Swing Out Windows
| Type | Installation | Ideal For | Key Features |
|---|---|---|---|
| Portable Air Conditioner | Easy, hose vent through window | Small- to medium-size rooms | Mobility, ease of installation |
| Casement/Slider Window AC | Vertical, fits narrow/swing out frames | Rooms with casement or sliding windows | Custom fit, vertical design |
| Mini Split System | Professional, no window needed | Any room, best for aesthetics | Quiet, energy efficient, high performance |
| Through-the-Wall AC | Wall opening required | Permanent installation, custom projects | Discreet installation, powerful cooling |
Challenges Of Installing AC Units In Swing Out Windows
Traditional window AC units are built for sash windows. Swing out or casement windows open outward, restricting the space available for installation. Attempting to modify these windows or force a standard AC unit can damage the frame, reduce security, and allow air or water infiltration. Proper solutions require alternatives designed for these window styles or creative modifications with safety and efficiency in mind.
Types Of Air Conditioners Suitable For Swing Out Windows
Portable Air Conditioners
Portable AC units are the most versatile option for swing out windows. They stay on the floor and use a venting hose that can be attached through a specially designed panel fitted into the open portion of a window. This allows for convenient installation without significant changes to the window structure or function.
- Flexibility: Can be moved from room to room as needed, perfect for renters or temporary solutions.
- Easy Setup: Window kits included with most models help adapt to various window shapes.
- Efficiency: Ideal for rooms up to 450 sq. ft. for most models.
- No Permanent Changes: Leaves original windows untouched, preserving home integrity.
Casement And Slider Window AC Units
Manufacturers have developed vertical window air conditioners specifically designed for narrow, tall openings of swing out or slider windows. These are taller and thinner than traditional window units, making them a direct-fit for many casement windows.
- Direct Fit: Designed for vertical installation in openings as narrow as 15 inches wide.
- Sealing Kits: Often come with custom window sealing kits to ensure airtight installation.
- Permanent Or Semi-Permanent: More secure than portable options, suitable for longer-term use.
- Not For All Sizes: May not fit extremely narrow or custom-shaped swing out windows.
Mini Split (Ductless) Systems
For a premium, seamless solution, ductless mini split systems provide robust cooling without any need for window mounting. An indoor unit is mounted on a wall, while a slim outdoor condenser is installed outside—the two are connected by a small conduit requiring only a 3-inch hole in the wall.
- Quiet Operation: Indoor units are virtually silent.
- Energy Efficiency: High SEER ratings often qualify for energy rebates.
- Zero Window Use: Preserves your swing out window’s function and view.
- Professional Installation: Required for safe and optimal performance.
Through-The-Wall Air Conditioners
Through-the-wall air conditioners are installed through an external wall, completely bypassing the window. While this option requires creating an opening in the wall, it provides strong year-round cooling and a clean external appearance.
- Long-Term Solution: Ideal for homeowners seeking permanent cooling.
- High Cooling Capacity: Suitable for large rooms or apartments.
- Preserves Window: Does not obstruct or alter swing out windows.
- Installation Cost: More expensive upfront, typically requires professional help.
Factors To Consider When Choosing An AC For Swing Out Windows
Window Dimensions And Type
Measure your window carefully—height, width, and how far it opens. Casement and awning windows may only accommodate narrow vertical AC models or portable ACs with narrow vent kits. Always compare your measurements with the chosen unit’s requirements before purchase.
Cooling Capacity (BTUs)
The cooling power of an air conditioner is measured in BTUs (British Thermal Units). Figure out the size of the room for optimal cooling:
- 150–250 sq. ft.: 5,000–8,000 BTUs
- 250–400 sq. ft.: 8,000–10,000 BTUs
- 400–600 sq. ft.: 10,000–14,000 BTUs
Consider room insulation, ceiling height, sunlight exposure, and the number of occupants, as these factors might require upgrading to a higher BTU model.
Energy Efficiency
Look for Energy Star ratings and high EER/SEER values when possible. Inverter-driven mini splits, for instance, are notably efficient, while many portable ACs now feature eco modes or programmable thermostats to save energy when not in use.
Installation And Maintenance
Ease of installation is critical, especially for renters or DIY installers. Portable ACs are typically easiest, while casement and through-the-wall units may need more setup. Also, check how easy it is to clean and replace filters for ongoing performance and air quality.
Noise Levels
Bedroom and study areas benefit from quiet models. Mini splits are among the quietest, while portable and window units usually specify their decibel levels in product specs for comparison.
Top Portable Air Conditioners For Swing Out Windows (2025)
The following models are well-reviewed, reliable, and come with adaptable window kits suitable for crank windows or awning-style openings.
| Model | BTUs | Room Size | Key Features |
|---|---|---|---|
| Whynter ARC-122DS Elite | 12,000 | Up to 400 sq. ft. | Dual hose, quiet, energy-efficient, includes window kit |
| Honeywell HL Series | 10,000–14,000 | Up to 550 sq. ft. | Auto-evaporation, digital controls, easy mobility |
| BLACK+DECKER BPACT10WT | 10,000 | Up to 250 sq. ft. | Compact, user-friendly remote, adaptable for narrow windows |
| DeLonghi Pinguino 3-in-1 | 12,500 | Up to 450 sq. ft. | Dehumidifier, energy-saving, washable filter |
Top Casement Window ACs For Swing Out Windows (2025)
Select casement/slider window ACs for semi-permanent installation in vertical openings. These options fit most casement and awning-style windows thanks to their slim, tall chassis.
| Model | BTUs | Window Min/Max Width | Key Features |
|---|---|---|---|
| Frigidaire FHC084WA1 | 8,000 | 14–17.9 in | Energy Star, multi-speed fan, sleep mode |
| PerfectAire 3PASC10000 | 10,000 | 15.5–16.25 in | Remote, programmable timer, washable filter |
| Keystone KSTSW10A | 10,000 | 14.5–17.5 in | 3 cooling speeds, energy saver, easy install kit |
Mini Split Systems: Premium, Permanent Solution
Mini splits are increasingly popular for their high efficiency and versatility. They use no window space and offer climate control for single rooms or whole homes. Top brands like Mitsubishi, LG, Daikin, and Pioneer offer systems ranging from 9,000 to 24,000 BTUs, with features such as:
- Wi-Fi Smart Control for scheduling and monitoring
- Multi-room expansion with additional indoor units
- High SEER ratings (increased energy savings)
- Quiet operation suitable for bedrooms or home offices
Professional installation is advised for correct sizing, electrical connections, and warranty coverage.
Through-The-Wall ACs: When Window & Aesthetics Matter
For homes where preserving window usability or appearance is paramount, through-the-wall models like the Friedrich WallMaster and LG LT1016CER are excellent. These require a wall sleeve but provide durable, quiet, and high-capacity performance. They are non-intrusive to window function and can be installed in locations where cooling is needed most.
How To Install A Portable AC In Swing Out Windows
One of the most common solutions, portable AC installation in swing out windows, is straightforward with the right kit:
- Open the casement or awning window as wide as possible.
- Insert the adjustable window bracket vertically into the opening.
Trim the bracket to fit if necessary. - Securely close the window against the bracket or use weatherproofing foam to seal edges.
- Connect the exhaust hose from the AC unit to the vent hole in the bracket.
- Plug in and operate the unit, ensuring a tight seal to prevent air leakage or backdraft.
Most major brands include all necessary hardware, but third-party universal window kits are also available for odd-sized or uniquely shaped swing out windows.
Energy Efficiency And Environmental Concerns
Choosing a model with high energy efficiency ratings saves money and reduces environmental impact. Look for:
- Energy Star certification where available
- Programmable thermostats to minimize runtime
- Dehumidification modes for dual climate comfort
- Inverter technology in mini splits for variable-speed performance
Proper sealing and maintenance ensure your AC runs at peak efficiency, prevents mold, and maintains air quality.
Cost Comparison: Price Ranges For Each Solution
The total cost of AC solutions for swing out windows varies based on type, size, and installation complexity:
| Air Conditioner Type | Unit Price | Installation Cost | Total Typical Cost |
|---|---|---|---|
| Portable Air Conditioner | $300–$700 | $0–$50 (DIY) | $300–$750 |
| Casement/Slider Window AC | $450–$900 | $0–$100 (DIY/Simple Install) | $450–$1,000 |
| Mini Split System | $900–$2,900 | $1,000–$3,000 (Professional) | $2,000–$6,000+ |
| Through-the-Wall AC | $500–$1,500 | $250–$800 (Professional/DIY) | $750–$2,300 |
Maintenance Tips For ACs In Swing Out Windows
- Regular cleaning of filters to maintain air quality and efficiency.
- Check and reseal window kits seasonally for portable and casement units to prevent leaks.
- Mini split systems require annual professional cleaning for optimal operation.
- Inspect condensation lines and pans to avoid indoor moisture issues.
Keeping up with maintenance prolongs the lifespan of your air conditioner and ensures it operates at its best during peak summer months.
Safety Considerations For Window And Through-The-Wall Installations
Prioritize window safety when installing AC units in swing out windows. Always use recommend mounting hardware and ensure the window remains secure against forced opening. For through-the-wall units, use a professional to minimize exposure to wiring or plumbing in the wall cavity. Consider security brackets or alarms if ground-level windows are involved.
FAQs: Air Conditioners For Swing Out Windows
Can I Use A Traditional Window AC In A Casement Window?
No, as these units require horizontal installation and proper support. Attempting to use them in swing out windows can lead to poor sealing, leakage, and safety hazards.
What Is The Best Solution For Renters?
Portable air conditioners with specialized venting kits are the preferred choice, as they do not alter the window or structure and can move with you.
Are Mini Split Systems Worth The Investment?
If budget allows and long-term comfort and energy savings are priorities, then yes. Mini splits are especially suitable for permanent residences or additions where window access is limited.
Can I Leave My Swing Out Window AC Installed Year-Round?
Some casement units can remain installed all year, but it’s best to remove portable units during winter to avoid losing heat through the vent kit. Through-the-wall and mini splits are intended for year-round operation.
What If My Swing Out Window Is Very Narrow?
Portable ACs or consulting a professional for a mini split system are recommended for non-standard, narrow openings.