Staying cool during hot summers is essential, but finding an air conditioner for crank windows (also known as casement or sliding windows) can be a challenge. Traditional window ACs are often incompatible, but several efficient solutions are available. This guide explores the top air conditioners for crank windows, installation methods, buying tips, and the latest product recommendations for American homes.
Summary Table: Air Conditioning Options For Crank Windows
| Option | Ease of Installation | Cooling Capacity | Window Modifications Needed | Average Cost (2025) |
|---|---|---|---|---|
| Portable Air Conditioner | Easy | 6,000-14,000 BTU | Minimal (vent kit needed) | $300 – $700 |
| Casement Window AC | Moderate | 8,000-10,000 BTU | Some (custom brackets) | $400 – $800 |
| Mini-Split Air Conditioner | Professional | 9,000-24,000 BTU | No window needed | $1,000 – $3,000 |
Why Standard Window Air Conditioners Don’t Fit Crank Windows
Crank windows, also called casement or awning windows, open outward with a hand crank, creating a narrow vertical or horizontal opening. Standard window air conditioners are designed for sash windows, which open upward and can support the unit’s weight. Most traditional ACs are too wide and heavy for crank window frames, making them unsuitable without major modifications.
Attempting to fit a boxy window AC into a crank window can result in poor installation, leading to inefficient cooling, air leaks, security issues, and potential water intrusion. Instead, specialized models and alternative solutions are better suited for these window types.
Types Of Air Conditioners Suitable For Crank Windows
Portable Air Conditioners
Portable air conditioners are among the most popular and easiest choices for homes with crank windows. Rather than mounting in the window frame, these units stand on the floor and vent hot air outside via a flexible exhaust hose.
The hose connects to a custom window kit with an adjustable panel, allowing installation in vertical or horizontal spaces. This means no heavy lifting or permanent installation is required, and you can move the unit between rooms as needed.
- Pros: Simple installation, mobility, no need to modify the window permanently
- Cons: Typically less energy efficient, can take up floor space, may require draining condensation
Casement Window Air Conditioners
Casement or slider-window AC units are specifically engineered for tall, narrow window openings like those found in crank windows. They are slimmer and taller than standard window ACs, fitting vertically into the frame. Most include a kit that seals the remaining window area, maintaining efficiency.
- Pros: Higher energy efficiency than portables, ideal fit for casement windows, permanent solution
- Cons: More expensive, heavier, can be harder to install and remove
Mini-Split (Ductless) Air Conditioners
Mini-split systems provide powerful and highly efficient cooling with no need for window space at all. These systems include an outdoor compressor and one or more indoor air handlers mounted on the wall. They require professional installation but offer quieter operation and flexibility in placement.
- Pros: Quiet, energy efficient, doesn’t block window view, also offers heating
- Cons: Higher initial cost, professional installation required, more permanent
How To Choose The Right Air Conditioner For Crank Windows
Measure Your Space
Start by measuring both the room you want to cool and your window’s dimensions. Correct sizing ensures optimal performance. Undersized units may not cool your space, while oversized ones waste energy and cost more.
Check BTU Requirements
The cooling capacity of air conditioners is measured in BTUs (British Thermal Units). Use this guide to determine your BTU needs:
- Up to 350 sq. ft.: 8,000 BTU
- 350 – 550 sq. ft.: 10,000 – 12,000 BTU
- Over 550 sq. ft.: 14,000+ BTU
Consider factors like direct sunlight, ceiling height, number of occupants, and appliance heat production, as these can increase your BTU needs.
Energy Efficiency
Look for the Energy Star rating and check the EER (Energy Efficiency Ratio). Energy-efficient units use less electricity, helping to lower your utility bills and environmental impact.
Noise Levels
If you’re installing in a bedroom or office, quiet operation may be crucial. Portable and mini-split units tend to be quieter than window units, but always check the manufacturer’s decibel rating (dB).
Installation Method And Maintenance
Consider whether you want a temporary or permanent solution. Portable ACs are easy to set up and move, while casement and mini-split ACs are more permanent but less obtrusive. Remember to factor in long-term maintenance, including filter changes and condensation management.
Top Portable Air Conditioners For Crank Windows (2025 Recommendations)
| Model | BTU | Features | Average Price | Why It’s Good For Crank Windows |
|---|---|---|---|---|
| Whynter ARC-14S | 14,000 | Dual hose, auto-drain, Energy Star | $580 | Adjustable window kit fits most crank types; efficient cooling |
| Honeywell HL10CESWK | 10,000 | Dehumidifier, easy install, sleep mode | $430 | Versatile window kit, quiet, easy movement between rooms |
| Black+Decker BPACT12WT | 12,000 | Compact, remote control, reusable filter | $370 | Fits narrow and wide crank windows; good for smaller rooms |
Best Casement/Slider Window Air Conditioners For Crank Windows
| Model | BTU | Features | Window Width | Average Price |
|---|---|---|---|---|
| Frigidaire FFRS0822SE | 8,000 | Remote, adjustable louvers, sleep mode | 14” – 23” | $500 |
| PerfectAire 3PASC10000 | 10,000 | Digital controls, timer, energy saver mode | 15.5” – 16.25” | $650 |
| Koldfront CAC8000W | 8,000 | 24-hour timer, energy saver, tilt-out filter | 15.5” – 16.25” | $350 |
These units are designed for a vertical fit. Measure your window’s height and width to ensure compatibility before purchasing.
Top Mini-Split Air Conditioners For Crank Window Homes
| Model | BTU | Zones | Features | Average Price (installed) |
|---|---|---|---|---|
| PIONEER WYS012GMFI22RL | 12,000 | 1 | Heat pump, inverter, Wi-Fi programmable | $1,500 – $2,200 |
| Mitsubishi MUZ-GL15NA-U1 | 15,000 | 1+ | Advanced filtration, silent operation, energy star | $2,200 – $3,000 |
| Senville SENA-18HF | 18,000 | 1-4 | Heating/cooling, multi-zone, dehumidifier | $2,000 – $2,800 |
These units do not require a window for venting. Instead, the indoor air handler is mounted on the wall, and the compressor is placed outside. Professional installation is recommended for mini-split systems.
Installation Tips For Crank Window ACs
Portable AC Installation Tips
- Window Kit Fit: Use the supplied window kit or a custom-cut panel to fill the gap in your crank window when venting the exhaust hose.
- Sealing: Properly seal around the vent panel with weather stripping or foam to prevent air leaks and maximize efficiency.
- Drainage: Ensure easy access to the drainage port for periodic maintenance.
Casement Window AC Installation Tips
- Size Check: Double-check the dimensions of both your window and the AC unit before purchasing.
- Bracing: Use the included mounting brackets and horizontal bars for secure installation.
- Sealing: Fill any gaps with custom panels or plexiglass, then apply weather stripping for insulation.
Mini-Split Installation Tips
- Placement: Choose a wall location for optimal airflow and comfort.
- Professional Help: Hire a licensed HVAC contractor to ensure correct refrigerant handling and electrical connections.
- Maintenance: Schedule annual service for efficient, long-lasting performance.
Additional Venting Solutions For Crank Windows
Custom Plexiglass Or Acrylic Panels
Some homeowners replace part of the crank window with a custom-cut plexiglass or acrylic sheet featuring a circular opening for the AC exhaust hose. This allows for secure venting while maintaining most of the window’s light and appearance.
Sliding Door Vent Kits
For rooms with sliding glass doors, vent kits can be used as an alternative to window venting. These kits slide into the door tract and are compatible with most portable ACs. This preserves the crank window for light and emergency egress.
Wall Vent Installation
As a permanent solution, consider cutting a vent directly through an exterior wall. This method is suitable for both portable and mini-split systems, though professional installation is recommended to maintain your home’s insulation and structure.
Common Mistakes To Avoid When Buying ACs For Crank Windows
- Ignoring Window Measurements: Always measure your window opening before purchasing a unit.
- Improper Sealing: Leaving gaps around the exhaust panel reduces efficiency and invites dust and pests.
- Choosing The Wrong BTU Size: An over- or under-sized AC will struggle to maintain comfort or waste energy.
- Neglecting Maintenance: Dirty filters and blocked vents reduce cooling power and increase energy costs.
- Overlooking Permitting Needs: Some cities require permits for mini-split installations or exterior venting.
Frequently Asked Questions About Air Conditioners For Crank Windows
Can Window ACs Be Used In Crank Windows?
No. Standard window AC units are incompatible with crank windows due to size and shape. Specialized casement or slider window ACs should be used. Portable or mini-split systems are usually better choices.
Do I Need To Remove The Window Screen?
Yes, most installations require removing the screen to fit the vent hose or unit securely. You can replace it after the AC season, but ensure a tight fit to prevent bugs.
How Can I Improve AC Efficiency In My Room?
Insulate around the window kit, close doors to unused spaces, use thermal curtains to block direct sunlight, and keep the filter clean for maximum airflow and cooling efficiency.
Is There A Window AC That Fits Horizontally?
Casement models are designed for vertical placement. If you need a horizontal fit, a portable AC with an adaptable vent kit or a custom panel is the most practical solution.
Best Practices For Cooling Rooms With Crank Windows
- Combine Your AC With Fans: Ceiling and box fans help circulate cool air throughout the space.
- Close Off Unused Rooms: This keeps your cooled air focused on where it’s needed.
- Schedule Regular Maintenance: Clean filters monthly and inspect seals seasonally for peak performance.
- Invest In A Smart Thermostat: For mini-splits, smart controls can shave costs by automating your cooling schedule.
- Update Insulation: Modern weather stripping, foam, and insulated curtains further boost efficiency and comfort.
Where To Buy Air Conditioners For Crank Windows In The U.S.
- Online Retailers: Amazon, Home Depot, Lowe’s
- Local Appliance Stores: Best Buy, Ace Hardware, regional chains
- Specialty HVAC Dealers: For mini-split systems and professional installation
Always compare specifications and warranties before purchasing. Look for units that offer free shipping and flexible return policies for added peace of mind.
Final Tips And Product Comparison For 2025
| Product Type | Recommended Model | Best For | Main Drawback |
|---|---|---|---|
| Portable AC | Whynter ARC-14S | Temporary setup, renters, easy moving | Noisier, takes up floor space |
| Casement Window AC | Frigidaire FFRS0822SE | Permanent setup, seamless fit | Bulkier, window blocked while in use |
| Mini-Split AC | Pioneer WYS012GMFI22RL | Silent, high-efficiency, no window needed | Higher upfront cost, pro install required |
By choosing the right air conditioner for crank windows and following modern installation and efficiency practices, staying cool and comfortable is well within reach—regardless of your window style.