Can you store a window air conditioner outside? No, you should not store a window air conditioner outside unprotected. Improper storage can lead to damage and reduce its lifespan. This guide will walk you through the best practices for storing your window AC unit to ensure it’s ready for next season.
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Preparing Your Window AC for Storage: The Crucial First Steps
Before you even think about moving your window air conditioner, proper preparation is key. This isn’t just about making it look tidy; it’s about preventing internal damage, corrosion, and insect infestations. Think of this as the essential winterizing process for your unit.
Cleaning Before Storing: A Breath of Fresh Air for Your AC
The most important step before storing your window AC is thorough cleaning. Dust, dirt, mold, and mildew can accumulate inside and on the exterior of your unit, especially on the coils and filters. Leaving these contaminants in place can lead to foul odors and health issues when you bring it out again.
What to Clean:
- Air Filter: This is the most critical part. Remove the filter and wash it with mild soap and water. Let it dry completely before reinserting or storing it separately. If your filter is disposable, replace it with a new one before storage.
- Coils (Evaporator and Condenser): These are the delicate fins inside and outside the unit. You can purchase specific AC coil cleaner from hardware stores. Follow the product instructions carefully. Often, it involves spraying the cleaner, letting it sit, and then rinsing with water. Ensure the unit is unplugged and that you protect the electrical components from excess moisture.
- Exterior Casing: Wipe down the entire exterior with a damp cloth and a mild detergent. Pay attention to any grime or stains.
- Fan Blades: Gently dust or wipe down the fan blades if accessible. Be careful not to bend them.
- Drain Pan: If your unit has an accessible drain pan, check for any standing water or debris and clean it out.
Important Note: Always ensure the air conditioner is unplugged from the power source before you begin any cleaning or AC unit disassembly.
AC Unit Disassembly: Removing the Unit Safely
Removing your window air conditioner requires care. Most units are heavy and awkward.
- Power Off: Unplug the unit from the wall outlet.
- Secure the Unit: Before trying to lift it, ensure it’s firmly in its place. Some units have locking mechanisms or screws that hold them to the window frame. Check your user manual for specific instructions.
- Remove Support Brackets: If you have external support brackets, these will need to be removed.
- Careful Removal: With a helper, gently pull the unit out of the window frame. It’s best to have someone inside and someone outside to guide it. Try to keep it as level as possible to prevent any internal fluids from shifting improperly.
- Cord Management: Wrap the power cord neatly and secure it to the unit.
The Best Storage Locations for Your Window Air Conditioner
Where you store your window AC unit significantly impacts its longevity. The goal is to protect it from extreme temperatures, moisture, pests, and physical damage.
Shed Storage: A Common and Effective Choice
Shed storage is a popular option for many homeowners. Sheds offer protection from the elements and can provide a relatively stable environment.
Pros of Shed Storage:
- Protection from Weather: Keeps the unit out of direct sunlight, rain, and snow.
- Pest Deterrent: A closed shed can offer some protection against rodents and insects.
- Space Saving: Frees up indoor space.
Cons of Shed Storage:
- Temperature Fluctuations: Sheds can get very hot in the summer and cold in the winter, which can stress the unit’s components.
- Moisture: Uninsulated sheds can still be susceptible to condensation and high humidity, which can lead to rust and mold.
Optimizing Shed Storage:
- Elevate the Unit: Place the AC unit on a shelf or pallet to keep it off the shed floor and away from potential moisture.
- Use an Air Conditioner Cover: A breathable air conditioner cover is essential. This will protect it from dust, debris, and minor bumps. Avoid plastic tarps that can trap moisture.
- Consider Insulation: If your shed is prone to extreme temperatures, consider adding some basic insulation to help moderate the interior climate.
Basement Storage: Managing Potential Humidity Issues
Basement storage can be a viable option, but humidity is the primary concern. Basements are often damp environments.
Pros of Basement Storage:
- Consistent Temperature: Basements tend to have more stable temperatures than attics or sheds.
- Protection from Elements: Offers good protection from sun, rain, and snow.
Cons of Basement Storage:
- Humidity and Moisture: This is the biggest drawback. High humidity can lead to corrosion and mold growth on the unit.
- Pests: Basements can sometimes attract pests like spiders and rodents.
Optimizing Basement Storage:
- Dehumidify: Run a dehumidifier in the area where you plan to store the AC.
- Elevate the Unit: As with shed storage, keep the unit off the floor using a shelf or pallet.
- Use an Air Conditioner Cover: A good air conditioner cover is crucial to keep dust and moisture away. Ensure it’s breathable.
- Ventilation: Ensure the storage area has some minimal air circulation.
Attic Storage: Use with Caution
Attic storage is generally not recommended for window air conditioners, but if it’s your only option, take extreme precautions.
Pros of Attic Storage:
- Out of the Way: Keeps the unit completely out of living spaces.
Cons of Attic Storage:
- Extreme Temperature Swings: Attics experience the most dramatic temperature fluctuations, getting very hot in summer and very cold in winter. This can damage plastic parts, seals, and refrigerants.
- High Humidity and Condensation: Heat can cause condensation when the cooler exterior air hits the warmer attic air, leading to moisture issues.
- Difficult Access: Moving a heavy AC unit up and down stairs can be challenging and risky.
Optimizing Attic Storage (If Absolutely Necessary):
- Extreme Protection: Wrap the unit thoroughly in heavy-duty plastic sheeting or a specifically designed AC storage bag. Seal all openings to prevent dust and moisture ingress.
- Elevate: Place it on a sturdy elevated platform.
- Climate Control (Ideal but often impractical): If your attic has climate control, this would be ideal, but it’s rarely the case.
The Art of Proper Placement and Securing Air Conditioner for Storage
Once you’ve chosen your storage location, how you place and secure the unit is vital.
Proper Placement: Keeping it Stable and Safe
- Level Surface: Always place the AC unit on a flat, stable surface. Avoid leaning it against walls or stacking other heavy items on top of it.
- Away from Hazards: Keep it away from chemicals, flammable materials, and areas prone to flooding.
- Vertical Orientation: While not always strictly necessary for a window unit, it’s generally best to store it in its upright orientation if possible, especially if it contains any residual oil in the compressor. This helps prevent oil from migrating to unwanted areas.
Securing Air Conditioner: Preventing Accidental Damage
- Use a Cover: This is your primary defense. A dedicated air conditioner cover is designed to fit well and offer protection.
- Wrap if Necessary: If a cover isn’t available or if you’re particularly concerned about dust or moisture (especially in an attic or uninsulated shed), consider wrapping the entire unit in heavy-duty plastic sheeting or a moving blanket before placing it in its designated spot.
- Avoid Stacking: Do not stack heavy items on top of the AC unit. This can crush the casing, damage the fins, or displace internal components.
- Secure the Cord: Wrap the power cord neatly and secure it with zip ties or Velcro straps. Avoid coiling it too tightly, as this can damage the wires.
Moisture Protection: The Unseen Enemy of Stored ACs
Moisture is the silent killer of stored appliances. Condensation, humidity, and leaks can wreak havoc on your window air conditioner.
Understanding Condensation and Humidity
- Condensation: This occurs when warm, moist air comes into contact with a cooler surface. In storage, temperature fluctuations can cause condensation to form on the metal parts of your AC, leading to rust.
- Humidity: High humidity in the storage environment means there’s a lot of moisture in the air. This can penetrate coverings and settle on surfaces, promoting mold and corrosion.
Strategies for Moisture Protection
- Breathable Covers: As mentioned, a breathable air conditioner cover is better than a sealed plastic one for most situations. It allows some air circulation, reducing condensation buildup.
- Desiccants: Consider placing a few silica gel packets or a small bucket of moisture-absorbing crystals (like DampRid) near the unit, especially if it’s in a more enclosed space. These will help absorb excess moisture from the air.
- Elevation: Keeping the unit off the floor is crucial, as moisture tends to collect at the lowest points.
- Avoid Damp Areas: Never store your AC in a location that is visibly damp or has signs of water damage.
The Best Type of Air Conditioner Cover
Choosing the right air conditioner cover is crucial. Not all covers are created equal.
Key Features of a Good AC Cover:
- Material: Look for durable, weather-resistant materials. Canvas or heavy-duty nylon are good choices. Some covers are designed to be breathable, which helps prevent condensation.
- Fit: The cover should fit snugly to prevent wind from getting underneath and blowing dust in, but not so tight that it strains the material.
- Coverage: It should cover the entire unit, including the front grille and the sides that extend out of the window.
- Closure: Zippers, Velcro, or drawstring closures help secure the cover.
- Drainage: Some covers have small vents or are designed to allow any minor moisture that gets in to drain out.
Types of Covers:
- Full Covers: These are the most comprehensive, typically covering the entire unit from top to bottom.
- Front Covers: These primarily protect the front grille and controls. They are often used in conjunction with other methods if the unit is stored outdoors (which is not recommended).
- DIY Solutions: While not ideal, if you can’t find a suitable cover, you can use heavy-duty tarps or plastic sheeting. However, ensure you create some ventilation to prevent moisture buildup. Seal the edges well with tape.
Table: Comparing Storage Locations
| Storage Location | Temperature Stability | Moisture Risk | Pest Risk | Ease of Access | Overall Suitability |
|---|---|---|---|---|---|
| Shed | Moderate | Moderate | Low | Moderate | Good |
| Basement | Good | High | Moderate | Good | Fair (with precautions) |
| Attic | Poor | High | Low | Poor | Poor (use extreme caution) |
| Garage | Moderate | Moderate | Moderate | Good | Good |
| Indoors (closet) | Excellent | Low | Low | Excellent | Excellent |
Storing Your AC Unit Indoors: The Safest Option
If you have the space, storing your window air conditioner indoors, such as in a closet or spare room, is the safest and most effective method.
Benefits of Indoor Storage:
- Temperature Control: The most stable temperature environment.
- Minimal Moisture: Significantly reduces the risk of condensation and humidity.
- Pest-Free: Protects against insects and rodents.
- Easy Access: Simple to retrieve when needed.
Considerations for Indoor Storage:
- Space: It requires dedicated space.
- Protection: Still use an air conditioner cover to protect it from dust and accidental damage.
- Elevation: Even indoors, placing it on a shelf or a sturdy box can prevent scratches to your flooring and offer a bit more protection.
Frequently Asked Questions (FAQs)
Q1: How do I protect my AC unit from pests during storage?
A1: Ensure your storage location is clean and sealed as much as possible. Using a good air conditioner cover is the first line of defense. You can also place pest deterrents like mothballs or cedar chips (in sealed containers) near the unit, but not directly on or inside it.
Q2: Can I store my AC unit horizontally?
A2: It’s generally best to store window air conditioners in their upright orientation to prevent oil from migrating within the compressor and cooling system. If you must store it on its side, try to limit the duration and be extra cautious when reinstalling.
Q3: What if my AC unit is still dirty after cleaning?
A3: If you notice persistent dirt or grime, especially on the coils, you might need to repeat the cleaning process. Ensure you’re using the appropriate coil cleaner and following the instructions carefully. For tough buildup, you may need a soft brush to gently dislodge it.
Q4: Is it okay to leave the AC unit in the window during winter?
A4: While some people do this, it’s not recommended for winterizing. Leaving it exposed to the elements, even with a cover, can lead to damage from ice, snow, and extreme cold. It can also create drafts and allow moisture to seep into your home. Removing and storing it properly will prolong its life.
Q5: Should I remove the mounting hardware when storing?
A5: You can remove the mounting brackets and screws if you wish. Store them securely in a bag attached to the unit or in a separate, labeled container so you don’t lose them. This also makes it easier to store the unit more compactly.
Q6: What are the risks of not cleaning the AC unit before storing?
A6: Not cleaning before storing can lead to several problems:
* Mold and Mildew Growth: Damp filters and coils are prime breeding grounds.
* Corrosion: Dirt and moisture accelerate rust on metal components.
* Odors: When you turn it on again, stale air and musty smells will be present.
* Reduced Efficiency: Dirt on coils hinders heat transfer, making the unit less efficient.
* Pest Infestation: Dust and debris can attract insects and rodents.
Proper preparation, careful handling, and thoughtful storage are the keys to ensuring your window air conditioner remains in excellent working condition, ready to provide cool comfort when the warm weather returns. By following these steps, you can effectively protect your investment and avoid costly repairs or premature replacement.