Storing an air conditioner properly when it’s not in use is crucial to ensure it lasts as long as possible. Air conditioners contain sensitive parts that can be easily damaged if not stored correctly. Proper storage helps prevent issues like corrosion, mold growth, and component failure down the line. This comprehensive guide will walk you through everything you need to know about storing window, portable, and central air conditioning units during the off-season or when not in use for an extended period.
Should I Cover the Air Conditioner While in Storage?
Yes, it’s highly recommended to cover your air conditioner while it’s in storage. Leaving the unit exposed can allow dirt, debris, insects, and rodents to get inside, potentially clogging components or chewing through wires. Covering the A/C protects the vulnerable inner workings from the elements and pests. Use a waterproof cover or tarp that’s specifically made for air conditioners rather than a regular plastic sheet or cloth furniture cover. Make sure the material is breathable as well so condensation doesn’t build up underneath. Secure the cover with bungee cords or straps to keep it from blowing off in windy conditions.
Where Should I Store the Air Conditioner?
When choosing where to store an air conditioner, there are several factors to consider:
– Inside vs. outside – Storing the A/C unit inside a garage, basement, or shed is best to shield it from sun, rain, snow, wind, and other outdoor exposure that can degrade and damage parts. If indoor storage isn’t possible, keep the unit covered on a paved surface outdoors.
– Temperature & humidity – Ideal storage conditions are a dry space with temperatures between 55-80°F. Avoid areas prone to moisture like damp basements.
– Accessibility – Pick a spot that allows you to easily access the A/C for maintenance checks during storage. Lifting and moving a heavy unit alone can risk injury.
– Security – An indoor storage area that can be locked is best to prevent theft. Outdoor storage areas should be blocked from access by fences, gates, chains, or locks.
– Cleanliness – Ensure the storage area is free of dust, dirt, lawn clippings, leaves, and other debris that can clog the inner workings of an A/C over time.
How to Prepare Window Air Conditioners for Storage
Follow these tips when preparing a window A/C unit for storage:
– Unplug the unit – Disconnect power to prevent accidental turning on, electrical shorts, and shock/fire hazards.
– Clean filters & housing – Use mild soap, water, and a soft brush to gently clean exterior and interior filters. This removes built-up dust, dirt, and debris.
– Drain water – Tip the unit slightly to drain all condensate water from the base pan and hoses. This prevents mold and mildew growth.
– Check for leaks – Look for signs of leaks around refrigerant lines, coils, base pan, etc. Leaks should be repaired before storage to prevent ice formation or corrosion issues.
– Inspect parts – Check that fan blades spin freely and components like thermostat, pump, and compressors are in working order. Note any concerning issues.
– Cover tightly – Seal the A/C with a fitted waterproof cover after cleaning, draining, and inspecting.
How to Prepare Portable Air Conditioners for Storage
Follow similar prep steps as with window units:
– Drain water – Fully drain the reservoir tank and hose of all condensate.
– Disconnect & clean – Unplug unit, clean exterior and filters. Inspect parts.
– Remove batteries – Take out batteries from remote controls to prevent leaking/corrosion.
– Coil power cord – Neatly coil any power cords and secure with ties to prevent tangling.
– Check vents – Ensure all exterior vents are clear of obstructions.
– Cover securely – Use a fitted cover specifically for portable ACs.
– Store upright – Stand the unit up vertically if possible to avoid damage to components.
How to Prepare Central Air Conditioners for Storage
Special steps should be taken when storing central air systems:
– Hire an HVAC pro – It’s highly recommended to have a professional prepare, inspect, and seal your central A/C system before storage. This prevents improper DIY preparations that could lead to expensive damages. Most HVAC companies offer pre-storage maintenance services.
– Shut off power – The power should be switched off at the breaker or by shutting off the outdoor condensing unit to prevent electrical hazards and compressor damage from restarting.
– Seal vents – Close and seal all supply and return air vents throughout the home to keep out pests, dust and debris that can clog ductwork.
– Drain condensate – Ensure condensate drains fully from the evaporator coil pan to prevent stagnant water and mildew.
– Inspect cabinets – Check that exterior cabinets and panels are secure with all screws in place. Tighten or replace as needed to prevent disconnected lines.
– Cover condenser – Use a weatherproof cover designed specifically for condensing units. Secure it tightly.
– Add anti-corrosives – HVAC pros often add special anti-corrosive agent to the refrigerant and compressor oil to reduce acid buildup and corrosion over the months of non-use.
How Often Should I Maintain/Inspect While in Storage?
It’s good practice to periodically check on your stored air conditioner about every 2-3 months. When inspecting:
– Check cover – Ensure the cover is still securely in place, with no holes, tears, etc. patching any openings that could let in pests/debris.
– Drain condensation – If any moisture has accumulated under the cover, remove it to prevent mold, mildew and corrosion.
– Monitor seals – Re-seal any vents or openings that may have come loose. Check that accessories like window exhaust panels are still securely sealed.
– Inspect power cord – Look for cracks, damage, or gnawing on the cord insulation. Rodents are attracted to the wires. Replace damaged cords before using.
– Clean exterior – Use a soft dry cloth to gently wipe down the exterior and remove any surface dirt. Don’t remove covers.
– Check filters – Remove covers to inspect air filters. If they appear very dirty, replace them with new ones before the next season’s use.
– Test controls – Turn on power briefly to test operating buttons, remotes, and thermostat controls. This ensures they’ll work after storage.
What Should I Do Before Using After Storage?
It’s important to properly restart and test your air conditioner before kicking it into full cooling mode after months in storage. Here are tips for using an A/C post-storage:
– Wipe down exterior – Give the unit a thorough wipe down to remove any dust that settled during storage.
– Install cover panels – Replace any vent covers, exhaust hoses, or other accessories that were removed for storage.
– Clear debris – Check interior compartments for insect nests, dirt, leaves, etc. and vacuum out.
– Check power – Make sure electrical power and supply are properly connected. Flip breakers back on.
– Test fan modes – Power on and test different fan speeds and modes for proper airflow.
– Test cooling – Once inspecting and fan-testing are complete, briefly switch on cooling to ensure the A/C cools properly before extended summer use.
– Schedule maintenance – If needed, call an HVAC technician to do post-storage tune-ups like refrigerant pressure checks, coil cleaning, filter changes, etc.
– Reset thermostat – Program your thermostat for normal cooling operation. Slowly lower temperature settings over several hours.
Following proper storage and pre-use steps helps ensure your air conditioner survives the off-season and provides peak cooling performance year after year. Maintaining your A/C properly protects your investment in this expensive system.
What Are Some Mistakes to Avoid When Storing an Air Conditioner?
Proper air conditioner storage requires avoiding these common mistakes:
– Not covering – Leaving the unit uncovered risks damage from weather, dirt, nesting insects, rodents chewing wires, etc. Lack of protection shortens the A/C’s lifespan.
– Improper location – Don’t store it where it will be exposed to excessive humidity, heat, sun damage, rain leakage, or temperature fluctuations which strain components.
– Failing to clean – Not thoroughly cleaning prior to storage allows mold, mildew and debris to accumulate and cause operational problems when it’s turned back on.
– Neglecting maintenance – Avoid skipping recommended pre-storage servicing by a certified HVAC technician. This includes checking refrigerant, lines, capacitors, etc.
– Draining improperly – Failure to correctly drain all condensate before storage frequently leads to water damage and irreparable corrosion issues.
– Disconnecting improperly – Yanking power cords violently or leaving them dangling can damage wiring. Safely coil cords instead.
– Stacked storage – Do not stack other items on top of a stored A/C unit. Added weight stresses components.
– Rodent issues – Mice, squirrels and other rodents are attracted to covered A/Cs. Use traps/repellents and check for any chewed wires before restarting.
Taking time to properly winterize and store your air conditioning unit saves money and headaches down the road. Avoid these common shortcuts that often lead to expensive repairs or full unit replacement.
Conclusion
Storing an air conditioner correctly when not in use for an extended time requires following some important guidelines. Choosing the right storage location away from temperature extremes, moisture, and pests is key. Properly cleaning, draining, and sealing the unit will prevent problematic build-up of dirt, water, and grime on interior components. Regular maintenance checks every 2-3 months ensures the cover stays secure and no damage is occurring. Always take steps to restart the A/C slowly when taking it out of storage before running full-time. Avoiding common storage mistakes like leaving it uncovered, stacking items on top, and improper disconnection goes a long way to ensuring your air conditioner lasts many years. With the right precautions, storing an AC doesn’t have to be difficult.