How to Properly Store Your Mark 3 Portable AC for Long-Term Use

Whether it's the end of the camping season or you simply won't be using your Mark 3 portable AC for a while, proper storage is essential. Storing it correctly not only prevents mold, odors, or damage, but also keeps your unit in top condition, ready to deliver powerful cooling whenever needed.

Here's how to prepare your Mark 3 for long-term storage, whether that's over winter or just between adventures.

Part I: Essential Preservation

This section outlines the essential steps to protect your Mark 3 from physical damage and keep it clean and odor-free during long-term storage. Make sure to complete these steps before putting the unit away.

1. Complete Drainage and Drying

The Mark 3 produces condensation while cooling, which can cause mold, mildew, or odors if not properly removed. Follow these steps to fully drain and dry the unit before final storage:

• Setup: Place your Mark 3 on a stable, flat surface that can safely get a little wet. This helps protect your floors and keeps the unit level during draining.
• Manual Drain: Press and hold the Fan button for about 2 seconds to trigger the internal drainage process.
• Fan Drying: Run the Mark 3 in Fan mode for 15-30 minutes in a dry room to help evaporate any remaining moisture inside.

Tip: Even after drying, avoid placing the unit directly on carpet or wood surfaces, as a small amount of residual moisture may remain.

2. Clean Filter and Exterior

• Filter Cleaning: Remove the filters. Rinse them under running water and let them air dry completely before reinstalling.
• Exterior Cleaning: Gently wipe the outer casing with a soft, damp cloth to remove surface dust. DO NOT spray water directly into the unit.

3. Finalize Accessories and Storage Location

Prepare the unit and its accessories for safe, static storage.

• Organize Accessories: Gather and organize all power adapters, cables, ducts, duct adapters, and the window panel (if you have one). The original packaging is ideal for protection and organization.
• Optimal Temperature: Store it in a dry, cool, and well-ventilated indoor space where the temperature is stable, ideally between 50°F and 77°F (10°C to 25°C).
• Avoid Hazards: Keep the unit away from direct sunlight, high moisture, excessive dust, or heavy objects that might crush it.

Part II: Optional Maintenance (Clean As Needed)

These actions are only needed if your Mark 3 shows visible dust buildup, has been used heavily, or develops odors after long use.

1. Deep Clean the AC

Inspect the air inlets for dirt or debris. Clean based on the condition.

• Light Dirt Removal: Use a soft, damp cloth or a vacuum with a brush attachment to remove light dust from the inlets.
• Heavy Buildup or Odors: For stubborn dirt or musty smells:
  • Remove the Orange Bottom Cover: Unscrew the orange cover at the bottom (secured with four screws) to allow any remaining water to drain naturally without turning on the unit.
  • Use Cleaning Solution: Apply an appropriate amount of AC coil cleaner to the air inlets and outlets, focusing on areas with visible dust or buildup.
  • Dry the Interior: Run the Mark 3 in Fan mode for about 15 minutes to help dry the cleaned areas.

Safety Tip: Use only non-acidic cleaners designed for air conditioners or AC coils. Always follow the manufacturer's safety instructions. Wear gloves if recommended, avoid direct contact with skin or eyes, and ensure good ventilation while using.

Warning: DO NOT use harsh chemicals, abrasives, or solvents as they can damage the components.

Visual Guide: For a quick walkthrough of the cleaning process, you can watch the official video here: 

Final Thoughts

Proper long-term storage is simple but crucial. By draining, cleaning, organizing, and storing your Mark 3 the right way, you'll protect your investment and ensure it's always ready to deliver powerful cooling and fresh air whenever adventure calls again.

A little care today means effortless comfort tomorrow.