Crank Out Window Air Conditioner: The Complete Guide To Cooling Casement And Awning Windows

Finding the right air conditioning solution for crank out windows—also known as casement or awning windows—can be challenging. Standard window AC units are not designed for these unique configurations. This guide covers crank out window air conditioner options, installation tips, buying advice, and answers to the most common questions Americans face when cooling these less conventional windows.

What Are Crank Out Windows?

Crank out windows are hinged on the side (casement) or top (awning) and open outward using a crank mechanism. Unlike double-hung or sliding windows, they do not have a large vertical or horizontal sash that can be easily covered by window AC units. Their design offers energy efficiency and modern aesthetics, but complicates air conditioner installation.

Why Standard Window AC Units Rarely Work

Traditional window air conditioners are rectangular and intended to fit in sliding or double-hung windows. Casement and awning windows typically lack the width or support for a secure traditional AC installation. Attempting to install a standard AC unit can damage the window, pose safety risks, and void warranties.

Crank Out Window Air Conditioner: Top Solutions

Cooling a home with crank out/casement windows requires specific solutions:

• Vertical (Slider/Casement) Window AC Units: Specially designed to fit narrow window frames vertically, often taller and slimmer than standard units.
• Portable Air Conditioners: Freestanding units vented through a window kit, ideal for homes where window AC installation isn’t possible.
• Mini-Split (Ductless) AC Systems: Highly efficient, permanent solution without window installation; requires professional installation.
• Custom-Made Inserts: Created for especially small or unique windows, often at a higher cost and greater installation effort.

Vertical Casement Window AC Units: Features & Top Models

Casement window AC units are specifically engineered for narrow, upward-opening spaces. Their tall, slim profile allows them to fit and seal securely.

• Popular Models: Frigidaire FFRS1022R1, Midea MAW10C1AWT, Keystone KSTSW10A
• Typical BTU Range: 8,000–10,000 BTUs (ideal for rooms up to 450 sq ft)
• Key Features: Electronic controls, remote, adjustable airflow, energy efficiency

These models come with installation kits tailored for crank out windows. Their operation is quieter than many portable units, and energy usage is competitive with standard window ACs. Availability is often lower and price may be higher due to specialized design.

Portable Air Conditioners For Casement Windows

Portable air conditioners provide flexibility—simply roll into place and vent hot air through a casement window using an adapter kit. These units are a fuss-free, renter-friendly solution.

Installation Steps

1. Measure window opening height and width.
2. Install included window slider kit and seal any gaps with weather stripping or foam.
3. Connect exhaust hose and use adapter plate to cover the remaining open area.

Powerful, easy to move, and not permanently installed, portable units offer cooling for bedrooms, apartments, or offices. However, they tend to be less efficient and louder than window AC alternatives.

Mini-Split AC Systems For Crank Out Windows

Mini-split systems offer premium comfort for homes with non-standard windows. They consist of an outdoor compressor and an indoor air handling unit, connected by a small conduit through the wall. Installation requires a professional HVAC technician but provides:

• High SEER energy efficiency
• No window is required—maintains window use and aesthetics
• Quiet operation and multi-room/zone cooling solutions

The main drawbacks are cost and installation process, but they’re excellent long-term investments.

Comparison Table: Casement Window AC Alternatives

Solution	Installation Required	Ease of Use	Effectiveness	Estimated Cost
Vertical Casement AC	Moderate (window insert, mounting)	Simple	High (single room)	$400–$700
Portable AC	Minimal (venting kit)	Very simple, mobile	Medium (depends on venting)	$300–$600
Mini-Split AC	Professional (wall condenser & unit)	Simple (remote control)	Very high (multiple rooms)	$1,500–$3,500+
Custom Insert	High (made to order)	Moderate	Varies	$500–$1,500

Key Factors To Consider When Choosing An AC For Crank Out Windows

• Window Dimensions and Configuration: Accurate measurement is critical for a secure fit and efficient cooling.
• Room Size: Match the unit’s BTU rating to the square footage for optimal performance.
• Noise Levels: Consider noise ratings, especially for bedrooms or home offices.
• Energy Efficiency: Look for models with an Energy Star rating or high SEER/EER numbers to reduce electricity bills.
• Permanent vs. Temporary Installation: Renters may prefer portable ACs, while homeowners could benefit from semi-permanent or permanent solutions.
• Condensation Management: Ensure units can drain or evaporate condensation effectively.
• Budget: Include installation and potential warranty extensions when comparing units.

How To Measure Your Window For A Casement AC Unit

Accurate measurement ensures the right fit, safety, and cooling effectiveness. Here’s how to measure:

1. Raise or open the window completely, measure the narrowest width and overall height inside the frame.
2. Account for crank mechanism and screen hardware—ensure installation kit fits around these obstructions.
3. Compare measurements against manufacturer’s minimum and maximum window size requirements.

Installation Tips For Crank Out Window Air Conditioners

• Follow all manufacturer instructions and use the included mounting brackets. Improper installation can lead to air leaks or water intrusion.
• Seal all gaps with weather stripping to prevent hot air, moisture, and insects from entering.
• For portable ACs, anchor venting plate securely so the window can still open slightly for emergencies.
• Casement window ACs may require minor modifications, such as removal of screens or adjusting window locks.
• When in doubt, hire a professional for a safe, code-compliant installation.

Best-Rated Casement Window Air Conditioners On The Market

Several models consistently earn high marks among American homeowners for their performance, durability, and ease-of-use in crank out window setups:

• Frigidaire FFRS1022R1: 10,000 BTU, Energy Star certified, robust build, easy to operate digital controls.
• Midea MAW10C1AWT: Slim profile, powerful airflow, reliable cooling even in humid conditions.
• Keystone KSTSW10A: Compact, user-friendly installation, solid cooling for medium-sized rooms.

Availability can fluctuate due to seasonal demand and limited model ranges—shop early before peak summer months for the best selection.

DIY Solutions And Custom AC Inserts

In unique cases, some homeowners use DIY plexiglass or insulated foam inserts to fill the gap around a portable AC exhaust or custom-fitted smaller window units. These are often a last resort if:

• No commercial vertical AC unit fits the window dimensions.
• The window opens only a few inches, requiring modification.
• The property owner permits custom installation and sealing.

Proper sealing for safety and weather protection is essential—and DIY methods may void warranties or not meet insurance requirements.

Mini-Split Vs. Casement Window AC: Which Is Better?

Feature	Mini-Split System	Casement Window AC
Cooling Power	High, multi-room	Medium, single room
Energy Efficiency	Very high (SEER 18+)	Moderate (EER 9-11)
Noise Level	Very Quiet	Moderate
Installation	Professional only	DIY or professional
Cost	$1500–$4000	$400–$700
Impact on Window	None	Window cannot be opened/closed without removing AC

Energy Efficiency Considerations For Crank Out Window AC Options

• Look for Energy Star certification on casement AC units to guarantee efficient operation.
• Mini-splits deliver the best energy savings long-term, with variable speed compressors for consistent temperature control.
• Ensure portable AC exhaust kits are tightly sealed to minimize hot air re-entering—poor sealing results in energy waste.
• Regular filter cleaning and seasonal maintenance maximize performance and efficiency for all AC types.

Noise And Air Quality: What To Expect

Casement window ACs are designed to run at quieter decibel levels than portable units. However, both can emit noise during compressor cycles. For minimal disruption, review the manufacturer’s decibel rating before purchase.

Improved air quality is possible if units have multi-stage filtration and dehumidification. Some portable and mini-split models include HEPA or carbon filters for allergy relief.

Frequently Asked Questions (FAQs)

• Can A Standard Window Air Conditioner Fit A Crank Out Window? No—unless the opening meets the size and support requirements, which is rare for standard AC units.
• Are There DIY Casement AC Kits? Most vertical casement window ACs come with installation kits, but custom inserts may be necessary for unusually shaped windows.
• Will Installing An AC In My Window Affect The Warranty Or Property Value? Check with your window manufacturer, HOA, or landlord—improper installation or changes can void warranties or impact the building envelope.
• Are Mini-Split Systems Worth The Investment? For long-term homeowners, mini-splits offer low energy bills, quiet comfort, and minimal impact on windows.
• What Are The Best Brands For Casement Window ACs? Frigidaire, Midea, Hitachi, and Keystone are market leaders in performance and reliability.

Tips For Maximizing Comfort And AC Performance In Casement Windows

• Install blackout or insulated curtains to keep solar heat at bay and lower cooling costs.
• Use ceiling fans alongside window or portable ACs to speed up room comfort and circulate air evenly.
• Set the recommended room temperature (generally 78°F for energy savings) and run AC only when occupants are present.
• Check your local utility for rebates on energy-efficient air conditioners or mini-split installations.

Maintenance And Safety For Crank Out Window Air Conditioners

• Clean or replace the filter monthly to maintain airflow and reduce the risk of mold or allergens.
• Inspect seals around the AC and vent kit to prevent heat leakage or water intrusion.
• For portable units, empty the condensate bucket or check for auto-evaporation functionality.
• Secure window installations to deter theft or accidents, especially on upper floors.

Where To Buy And When To Shop For Crank Out Window Air Conditioners

Crank out window air conditioners are stocked at most major appliance retailers, including:

• Home Depot, Lowe’s, Menards
• Best Buy, Walmart, Sears
• Online stores: Amazon, Wayfair, and manufacturer direct

The best time to purchase is late winter or early spring—before peak summer demand limits selection and increases prices. Check for seasonal sales and rebates for the best value.

Summary: The Best AC Solution For Crank Out Windows

If you’re seeking a window air conditioner for crank out, casement, or awning windows, several excellent options exist:

• Casement-style window AC units offer a secure, efficient, and unobtrusive solution for single rooms.
• Portable air conditioners are highly flexible and suited for renters or frequent movers, though they may trade off some efficiency and quietness.
• Mini-split systems deliver lasting comfort, best suited for long-term investment and situations where structural modification is possible.

Prioritize a unit that fits your window, room size, and installation preference for the best cooling experience and energy savings.