Installing air conditioners in crank out windows (also called casement or awning windows) presents unique challenges compared to standard double-hung windows. These windows open outward using a crank mechanism rather than sliding up and down, making traditional window AC units incompatible. Homeowners with crank out windows need specialized solutions to enjoy cool indoor temperatures during hot weather. This article explores the various air conditioning options for crank out windows, installation techniques, top product recommendations, and important considerations to help you make an informed decision for your cooling needs.
Crank out windows, distinguished by their side-hinged design and outward opening mechanism, create several obstacles for traditional air conditioner installation. Unlike double-hung windows that provide a flat, stable surface for window units, casement windows lack the necessary structural support for standard AC models.
The primary challenges include:
- No horizontal sliding or lifting mechanism to accommodate standard window AC units
- Outward swinging design that prevents external mounting
- Crank handles and hardware that interfere with installation
- Difficult weatherproofing and sealing requirements
- Potential window frame damage from improper installation
Most conventional window air conditioners are designed with side panels that expand within a sash window frame. Since crank out windows don’t provide this configuration, specialized mounting solutions are necessary to ensure proper installation, efficient operation, and window integrity.
Air Conditioning Solutions for Crank Out Windows
Several effective cooling options exist for homes with casement windows, each with distinct advantages and limitations:
Casement Window Air Conditioners
Specifically designed for crank out windows, these units feature a vertical orientation rather than the horizontal layout of traditional window units. They typically include specialized mounting brackets and hardware that secure the unit to the window frame without requiring the stable bottom ledge needed by conventional models.
These purpose-built units often have a slimmer profile and are engineered to maintain the structural integrity of your casement window. They’re the most direct solution but tend to be more expensive than standard window units.
Custom Bracket Systems
Aftermarket brackets and support systems can adapt standard window air conditioners for casement window installation. These typically involve a plexiglass or acrylic panel that replaces the window glass, with a cutout sized for the AC unit.
The bracket system distributes the air conditioner’s weight safely while allowing for proper sealing around the unit. While more affordable than specialized units, this approach requires careful measurement and sometimes professional installation.
Portable Air Conditioners
Portable units offer a flexible solution that doesn’t require permanent installation. These freestanding appliances use an exhaust hose that vents through a small panel adapter installed in your casement window. The window remains mostly intact, with only a small opening for the vent hose.
While convenient and requiring minimal modification to your window, portable units typically offer less cooling efficiency and take up floor space inside your room.
Through-the-Wall Air Conditioners
For a permanent solution, through-the-wall units bypass window limitations entirely. These models are installed in an exterior wall opening, providing reliable cooling without affecting window functionality. This approach requires structural modification but offers excellent efficiency and durability.
| Solution Type | Average Cost | Installation Difficulty | Energy Efficiency | Window Modification |
|---|---|---|---|---|
| Casement Window AC | $400-$700 | Moderate | Good | Minimal |
| Custom Bracket System | $250-$400 | High | Moderate | Significant |
| Portable AC | $300-$600 | Low | Fair | Minimal |
| Through-the-Wall AC | $400-$800 | Very High | Excellent | None |
Step-by-Step Installation Guide for Casement Window Air Conditioners
Installing an air conditioner in a crank out window requires careful planning and execution. Here’s a comprehensive guide to the process:
Pre-Installation Preparation
- Take precise measurements of your window opening, including width, height, and depth
- Check your window frame’s condition and reinforce if necessary
- Ensure your electrical system can handle the air conditioner’s power requirements
- Gather necessary tools: drill, screwdriver, level, measuring tape, and weatherstripping
- Review local building codes and HOA regulations regarding external AC installations
Installation Process for Specialized Casement Units
- Remove the window screen and fully open the window
- Install the mounting bracket according to manufacturer specifications, ensuring it’s level and securely attached
- Place the air conditioner in the bracket, making sure it’s properly aligned
- Secure the unit to the bracket using the provided hardware
- Apply weatherstripping around the unit to create an airtight seal
- Close the window against the unit’s side panel as much as possible
- Use the included extension panels to seal any remaining gaps
- Secure everything with the provided screws and locking mechanisms
Installing with a Custom Bracket System
- Create or purchase a plexiglass panel cut to your window dimensions
- Cut an opening in the panel sized for your AC unit
- Install the panel in place of the window glass or against the window frame
- Secure the panel with appropriate hardware
- Insert the AC unit through the opening
- Support the external portion of the unit with brackets anchored to the exterior wall
- Seal all edges with weatherstripping and caulk to prevent air and water infiltration
For the best results, consider professional installation, especially if you’re uncomfortable with structural modifications or if your window requires special considerations. Most HVAC professionals have experience with casement window air conditioner installations.
Top Recommended Air Conditioners for Crank Out Windows
When selecting an air conditioner for your casement window, consider these top-performing models specifically designed for this application:
| Model | BTU Rating | Room Size | Energy Efficiency Ratio | Price Range | Key Features |
|---|---|---|---|---|---|
| Frigidaire FFRS0822S1 | 8,000 BTU | Up to 350 sq. ft. | 10.8 EER | $450-$550 | Remote control, programmable timer, 3 fan speeds |
| Kenmore 77223 | 10,000 BTU | Up to 450 sq. ft. | 10.9 EER | $500-$600 | Smart home compatibility, sleep mode, dehumidifier function |
| Perfect Aire 4PATW10000 | 10,000 BTU | Up to 450 sq. ft. | 10.4 EER | $420-$530 | Follow Me remote, 24-hour timer, multiple cooling modes |
| Haier ESAQ406T | 6,000 BTU | Up to 250 sq. ft. | 11.2 EER | $370-$450 | Quiet operation, energy saver function, dehumidification |
| LG LW6017R | 6,000 BTU | Up to 260 sq. ft. | 11.5 EER | $350-$420 | Auto restart, energy saving mode, washable filter |
Features to Consider When Choosing a Casement Window AC
- Cooling capacity: Select a unit with appropriate BTU rating for your room size (approximately 20 BTU per square foot)
- Energy efficiency rating: Higher EER numbers indicate more efficient operation and lower energy costs
- Noise level: Look for models advertising quiet operation, especially for bedrooms
- Installation requirements: Ensure the unit is compatible with your specific window dimensions
- Additional features: Consider value-added functions like remote control, programmable settings, and smart home integration
- Warranty coverage: Look for manufacturers offering robust protection on parts and labor
Maintenance Tips for Crank Out Window Air Conditioners
Proper maintenance extends the lifespan of your casement window air conditioner and ensures optimal performance. Follow these essential care guidelines:
Regular Cleaning Procedures
- Clean or replace air filters every 30 days during heavy use seasons
- Remove and clean the front grille to prevent dust buildup
- Gently vacuum condenser coils using a soft brush attachment
- Clear debris from the outdoor portion of the unit
- Check and clean the condensate drain to prevent water damage
- Wipe down exterior surfaces with a damp cloth
Seasonal Maintenance
Before summer begins:
- Inspect weatherstripping and seals for damage or deterioration
- Check mounting brackets and tighten any loose hardware
- Test all functions and modes before peak season demand
- Ensure the condensate drainage system is functioning properly
End of season care:
- Clean thoroughly before storage if removing the unit
- Cover the exterior portion if the unit remains installed year-round
- Store in a dry location in original packaging if possible
- Consider professional servicing for refrigerant check and internal cleaning
Alternative Cooling Options for Homes with Crank Out Windows
If a casement window air conditioner doesn’t suit your needs, consider these alternatives:
Ductless Mini-Split Systems
Mini-split systems offer powerful cooling without ductwork or significant window modifications. These systems consist of an outdoor compressor unit connected to one or more indoor air handlers. They require only a small hole through an exterior wall for the connecting conduit.
Advantages include zoned cooling, high energy efficiency, and quiet operation. The primary drawback is higher initial installation cost, typically $1,500-$4,000 per zone including professional installation.
Window-Vented Portable Air Conditioners
Modern portable air conditioners come with adapters specifically designed for casement windows. These units sit entirely inside your room with only an exhaust hose connecting to the window adapter panel.
The key benefits include easy installation, no permanent modifications, and the ability to move the unit between rooms. Drawbacks include less efficiency than fixed units and the need for floor space near the window.
Through-the-Wall Installation
For a permanent solution that preserves window functionality, through-the-wall units (also called sleeve air conditioners) provide reliable cooling with professional installation. This approach requires cutting an opening in an exterior wall but offers excellent performance and durability.
The main advantages include preserving window functionality and typically higher energy efficiency than portable units. The disadvantages are permanent home modification and higher installation costs.
| Alternative Solution | Initial Cost Range | Professional Installation Required? | Energy Efficiency | Best For |
|---|---|---|---|---|
| Ductless Mini-Split | $1,500-$4,000+ | Yes | Excellent | Permanent solutions, whole-home cooling |
| Portable AC with Window Vent | $300-$700 | No | Fair | Temporary cooling, rental properties |
| Through-the-Wall AC | $500-$1,200 | Yes | Very Good | Permanent installation where window preservation is important |
| Evaporative Cooler | $100-$500 | No | Good (in dry climates) | Dry climates, environmentally conscious users |
Energy Efficiency and Cost Considerations
Understanding the economic impact of your cooling solution helps make an informed decision for your casement window air conditioning needs:
Energy Consumption Factors
- CEER Rating (Combined Energy Efficiency Ratio): Higher numbers indicate better efficiency
- BTU appropriate for room size: Oversized units cycle on and off frequently, reducing efficiency
- Insulation quality around the installation: Poor sealing dramatically increases energy usage
- Smart features like programmable timers and thermostats can reduce unnecessary runtime
- Energy Star certification indicates units meeting strict efficiency guidelines
Operating Cost Comparison
For a 350 square foot room with average insulation in a moderate climate:
| Cooling Solution | Initial Purchase Cost | Professional Installation | Monthly Operating Cost* | Estimated Lifespan |
|---|---|---|---|---|
| Casement Window AC (8,000 BTU) | $450-$600 | $100-$300 | $30-$50 | 8-10 years |
| Portable AC (8,000 BTU) | $350-$500 | DIY | $40-$70 | 5-8 years |
| Mini-Split (9,000 BTU) | $700-$1,200 | $800-$1,500 | $20-$35 | 15-20 years |
| Through-the-Wall AC (8,000 BTU) | $450-$650 | $400-$800 | $25-$45 | 10-15 years |
*Based on 8 hours of daily operation at average electricity cost of $0.13/kWh. Actual costs vary by location, usage patterns, and climate.
When calculating the true cost of ownership, consider both upfront expenses and long-term operating costs. Though mini-split systems have higher initial costs, their superior efficiency and longer lifespan often result in lower total cost over a 10-15 year period. Portable units typically have the lowest entry cost but may prove more expensive over time due to lower efficiency.
For casement window installations specifically, the proper fit and sealing significantly impact energy efficiency. Professional installation may cost more initially but can deliver substantial energy savings through optimal setup and insulation.