Crank out windows, also known as casement or awning windows, present unique challenges when it comes to installing traditional air conditioner units. Unlike standard double-hung windows that slide vertically, crank out windows swing outward using a hinged mechanism, making conventional window AC installation nearly impossible. Homeowners with these window types often struggle to find effective cooling solutions that don’t require major modifications to their homes. This article explores the various air conditioning options available for crank out windows, including specialized mounting kits, portable units, custom solutions, and alternative cooling systems that can effectively cool spaces without compromising the window’s functionality or home security.
Crank out windows, primarily casement and awning styles, are popular for their excellent ventilation capabilities and tight seal when closed. Casement windows hinge on the side and open outward, while awning windows hinge at the top and open from the bottom. Both types operate using a crank mechanism that extends and retracts the window sash.
These window styles offer several advantages over traditional double-hung windows, including better energy efficiency, superior ventilation, and enhanced security. However, their outward-opening design creates significant complications for standard window air conditioners, which are designed for vertical-sliding windows with a stable bottom sill support.
The typical dimensions of crank out windows vary widely, with widths ranging from 16 to 40 inches and heights from 16 to 72 inches. The crank hardware and opening mechanism usually protrude into the interior space, further complicating air conditioner installation options.
Challenges of Installing Air Conditioners in Crank Out Windows
Traditional window air conditioners are designed specifically for double-hung windows where the unit can sit securely on the window sill while the window closes down on top to hold it in place. Crank out windows present several unique installation challenges that make conventional AC units impractical:
- No horizontal sill support for the AC unit’s weight
- Outward swinging operation that prevents standard installation
- Crank hardware that interferes with placement
- Difficulty creating an airtight seal around irregularly shaped openings
- Potential structural damage from improper installation attempts
- Security concerns with modified windows
Additionally, many homeowners associations and rental agreements specifically prohibit modifications to windows that might be required for installing traditional units in crank out windows. The risk of voiding window warranties is also a significant consideration when attempting non-standard AC installations.
Portable Air Conditioners: The Most Viable Solution
Portable air conditioners represent the most practical solution for cooling rooms with crank out windows. These freestanding units sit entirely inside the room and only require a small vent hose to exhaust hot air outside. Most portable units come with window kits that can be adapted to work with casement windows.
The standard portable AC installation involves creating a panel insert that fits the window opening. When the casement window is partially opened, this panel fills the gap and provides a port for the exhaust hose. Many manufacturers now offer specialized casement window kits, or universal kits that can be cut to size.
Types of Portable Air Conditioners
| Type | Description | Average Cost | BTU Range |
|---|---|---|---|
| Single-hose models | Uses indoor air for cooling and exhausts it outside | $250-$500 | 8,000-12,000 |
| Dual-hose models | Draws outside air for cooling, more efficient | $400-$700 | 10,000-14,000 |
| Smart portable ACs | Wi-Fi enabled with app control capabilities | $500-$1,000 | 10,000-14,000 |
| Portable AC/heater combos | Provides both cooling and heating options | $500-$900 | 10,000-14,000 |
When selecting a portable air conditioner, consider the room size, required cooling capacity (measured in BTUs), noise level, and energy efficiency rating. Most manufacturers recommend 20 BTUs per square foot of living space for adequate cooling performance.
DIY Window Adapters for Crank Out Windows
For homeowners comfortable with DIY projects, creating custom window adapters can be a cost-effective solution. These adapters typically involve fabricating a panel that fits the window opening while accommodating an exhaust hose.
Plexiglass or acrylic sheets make excellent materials for custom window panels as they can be easily cut to size and are durable enough to withstand seasonal use. Other options include plywood sealed with weather-resistant paint or commercial-grade foam board with a weatherproof covering.
A basic DIY adapter installation involves:
- Measuring the window opening dimensions precisely
- Cutting the chosen material to fit the opening
- Creating a properly sized hole for the exhaust hose
- Securing the panel with removable weather stripping or magnetic strips
- Sealing any gaps with foam tape or weatherstripping
For improved security, consider adding a locking mechanism to prevent the panel from being removed from outside. Many homeowners incorporate toggle clamps or sliding bolts that can only be operated from inside the home.
Commercial Casement Window AC Kits
Several manufacturers now offer specialized kits designed specifically for installing air conditioners in crank out windows. These commercial solutions provide more polished results than DIY options and typically include all necessary hardware for a secure installation.
Popular commercial casement window AC kits include:
- Midea U-shaped AC with casement bracket kit
- LG portable AC casement window venting kit
- Frigidaire casement window adapter kit
- Haier flexible window kit with extendable panels
- Whynter ARC-series casement window kit
These kits typically range from $30-$100 depending on the brand and features. Most are designed to work with specific portable AC models, so compatibility should be verified before purchase. Installation usually requires minimal tools and basic DIY skills.
Alternative Cooling Solutions for Homes with Casement Windows
Beyond portable air conditioners and window adapters, several alternative cooling solutions work well with crank out windows. Each option comes with distinct advantages and considerations regarding installation complexity, cost, and cooling efficiency.
Mini-Split Air Conditioners
Mini-split systems offer the most permanent and efficient solution for cooling homes with challenging window configurations. These ductless systems consist of an outdoor compressor unit connected to one or more indoor air handlers. Only a small hole (approximately 3 inches) in the exterior wall is needed for the refrigerant lines.
Mini-splits provide zone-based cooling, allowing different temperature settings in separate rooms. While their initial installation cost is higher than portable options, they offer superior energy efficiency and can significantly reduce operating costs over time.
Through-Wall Air Conditioners
Through-wall (or through-the-wall) air conditioners bypass window limitations completely by installing directly into an exterior wall. These units require creating a properly sized opening in the wall with appropriate support framing.
Professional installation is typically recommended for through-wall units to ensure proper support, insulation, and sealing. These units provide permanent cooling without sacrificing window functionality but represent a more significant home modification than other options.
Comparative Analysis of Cooling Options
| Cooling Solution | Initial Cost | Installation Difficulty | Energy Efficiency | Noise Level | Permanence |
|---|---|---|---|---|---|
| Portable AC with adapter | $300-$700 | Low | Moderate | High | Temporary/Seasonal |
| DIY window adapter | $50-$150 | Moderate | Varies | Depends on AC | Temporary/Seasonal |
| Mini-split system | $1,500-$4,000 | High (professional) | Very High | Low | Permanent |
| Through-wall AC | $400-$700 + installation | High (professional) | Moderate to High | Moderate | Permanent |
| Window fan with adapter | $30-$100 | Very Low | Low (not true AC) | Moderate | Temporary/Seasonal |
Installation Guide for Portable ACs in Crank Out Windows
If you’ve decided that a portable air conditioner is the best solution for your crank out windows, follow these detailed installation steps for optimal results:
Preparing for Installation
Before beginning the installation process, gather all necessary materials:
- Portable air conditioner with exhaust hose
- Measuring tape
- Pencil for marking
- Appropriate panel material (plexiglass, acrylic, or manufacturer’s kit)
- Weatherstripping or foam tape
- Drill with appropriate bits
- Jigsaw or appropriate cutting tool
- Screwdriver and hardware for mounting
Measure your window opening carefully, accounting for any hardware that might interfere with the panel placement. Consider making a paper template first to ensure proper fit before cutting more expensive materials.
Step-by-Step Installation Process
- Open the crank out window to its maximum extent
- Position the adapter panel in the window opening, ensuring it fits securely
- Mark the location where the exhaust hose will connect to the panel
- Cut an appropriately sized hole for the exhaust port
- Apply weatherstripping around the panel edges to create an airtight seal
- Secure the panel in place using appropriate fasteners or clips
- Connect the exhaust hose to the panel port
- Ensure the portable AC unit is positioned at least 20 inches from walls for proper airflow
- Test the setup for air leaks and adjust as needed
For improved energy efficiency, consider adding insulation around the exhaust hose. Reflective duct insulation can significantly reduce heat transfer through the hose, improving overall system performance.
Energy Efficiency and Operating Cost Considerations
When selecting an air conditioning solution for crank out windows, energy efficiency significantly impacts long-term operating costs. The Energy Efficiency Ratio (EER) and Seasonal Energy Efficiency Ratio (SEER) provide standardized measures for comparing cooling efficiency between different units.
Portable air conditioners typically have lower efficiency ratings than permanent solutions, with EER values ranging from 8-10 compared to 12+ for mini-split systems. This efficiency difference translates directly to operating costs, with higher-efficiency units consuming less electricity to produce the same cooling effect.
Estimated Monthly Operating Costs
| Cooling Solution | Average Wattage | Daily Cost (8hrs/day)* | Monthly Cost* |
|---|---|---|---|
| 8,000 BTU Portable AC | 800-950 watts | $0.80-$0.95 | $24-$28.50 |
| 12,000 BTU Portable AC | 1,100-1,400 watts | $1.10-$1.40 | $33-$42 |
| 12,000 BTU Mini-Split | 800-1,000 watts | $0.80-$1.00 | $24-$30 |
| 10,000 BTU Through-Wall AC | 900-1,200 watts | $0.90-$1.20 | $27-$36 |
*Based on average electricity cost of $0.13 per kWh
To maximize energy efficiency with any cooling solution, ensure proper insulation around the installation area. Weather stripping, foam tape, and reflective barriers can significantly reduce cool air loss and improve overall system performance.
Maintenance and Troubleshooting
Proper maintenance ensures optimal performance and longevity for any air conditioning solution used with crank out windows. Regular maintenance should include cleaning or replacing filters, checking seals, and inspecting exhaust connections for any signs of damage or deterioration.
For portable air conditioners, drain the condensate collection tank regularly or set up a continuous drainage system if available. Clean the exhaust hose periodically to remove dust and debris that can restrict airflow and reduce efficiency.
Common Issues and Solutions
- Inadequate cooling: Check for air leaks around the window adapter, ensure proper unit sizing for the room, and verify that the exhaust hose is properly insulated
- Excessive noise: Ensure the unit is on a level surface, check for loose components, and verify that the exhaust hose isn’t kinked or restricted
- Water leakage: Empty the condensate tank regularly, check that the unit is properly leveled, and verify that drain plugs are secure
- Short cycling: Clean or replace filters, ensure adequate airflow around the unit, and check that the thermostat is functioning correctly
- Adapter panel security: Reinforce mounting points, add additional weather stripping, or consider installing security locks
At the end of the cooling season, properly store window adapters in a dry location to prevent warping or damage. Clean all components thoroughly before storage, and cover the portable unit to protect it from dust accumulation during the off-season.
Aesthetic and Practical Considerations
While functionality is paramount, aesthetic considerations also matter when installing air conditioning solutions for crank out windows. Custom-made acrylic panels can be tinted to match window frames or home exterior colors, creating a more integrated appearance.
For seasonal installations, design your solution for easy removal and storage during cooler months when air conditioning isn’t needed. Magnetic attachments or tool-free fastening systems can simplify the seasonal transition while maintaining a secure fit during use.
Consider the interior space requirements as well. Portable air conditioners typically require 1-3 square feet of floor space and clearance around the unit for proper air circulation. Strategic placement can minimize the unit’s visual impact while ensuring optimal performance.
For permanent solutions like mini-splits, consult with an HVAC professional about placement options that balance performance needs with aesthetic considerations. Modern mini-split systems offer slim-profile indoor units that can be installed high on walls to minimize their visual presence.