Every year, as hurricane season approaches, many homeowners in New Orleans, Gretna, Harvey, Metairie, and across the Greater New Orleans area ask the same question: Should I cover my outdoor AC unit during storm season?
It seems like a logical idea — after all, heavy rain, strong winds, flying debris, and flooding are common during storms. However, the answer is not as simple as it seems. In many cases, covering your outdoor AC unit can actually do more harm than good.
In this detailed guide, the experts at Zees Air Conditioning Inc. explain whether you should cover your outdoor air conditioner, the potential risks, better protection methods, and what to do before, during, and after storms.
Why Homeowners Consider Covering Their Outdoor AC Unit
During storm season in New Orleans, outdoor AC units face several threats:
- Heavy rainfall and flooding
- High winds that can push debris into the unit
- Flying branches, shingles, or other objects
- Salt air and moisture that accelerate corrosion
- Power outages and surges
Because of these risks, many people instinctively want to cover their condenser unit with a tarp, plastic sheet, or specially made AC cover. While the intention is good, this practice can create serious problems.
Should You Cover Your Outdoor AC Unit During Storm Season?
Short answer: In most cases, you should NOT cover your outdoor AC unit during storm season.
While it may seem protective, covering your AC unit can trap moisture, restrict airflow, and cause more damage than the storm itself. HVAC professionals across hurricane-prone areas like New Orleans generally advise against covering condenser units.
Pros and Cons of Covering Your Outdoor AC Unit
Here’s a clear comparison to help you understand both sides:
Table: Pros and Cons of Covering Your Outdoor AC Unit
| Aspect | Pros of Covering | Cons of Covering | Winner |
|---|---|---|---|
| Protection from rain | Keeps rain off the top of the unit | Traps moisture inside, leading to rust and mold | Cons |
| Protection from debris | Blocks large debris from entering | Debris can still get under the cover | Tie |
| Protection from wind | May reduce wind damage slightly | Strong winds can turn the cover into a sail and damage the unit | Cons |
| Corrosion prevention | May reduce direct water contact | Traps humidity and salt air, accelerating corrosion | Cons |
| Ease of use | Simple and cheap to do | Must be removed before running the AC | Pros (short term) |
| Long-term system health | None | Can cause major damage if forgotten or left on too long | Cons |
| Professional recommendation | Rarely recommended | Strongly discouraged by most HVAC experts | Cons |
As the table shows, the risks usually outweigh the benefits.
Why Most Experts Recommend NOT Covering Your Outdoor AC Unit
Here are the main reasons HVAC professionals advise against covering your condenser:
1. Trapped Moisture Causes Rust and Mold
When you cover the unit, rainwater and humidity get trapped underneath. In New Orleans’ humid climate, this creates the perfect environment for rust to form on the coils and electrical components. Mold and mildew can also grow inside the unit.
2. Covers Can Become Dangerous During High Winds
Strong hurricane winds can turn a loose cover or tarp into a dangerous projectile. It can also wrap around the fan blades or damage the fins of the condenser coils.
3. Restricted Airflow Damages the System
Even after the storm passes, if you forget to remove the cover before turning the AC back on, the unit will overheat due to lack of airflow. This can burn out the compressor — one of the most expensive parts to replace.
4. Debris Can Still Enter
Covers rarely seal perfectly. Small debris, leaves, and insects can still find their way inside, and you may not notice until the system fails.
5. False Sense of Security
Covering the unit gives a false sense of protection. Many homeowners then neglect other important storm preparations.
Better Ways to Protect Your Outdoor AC Unit During Storm Season
Instead of covering your AC unit, here are safer and more effective ways to protect it:
Before the Storm
- Trim trees and branches near your outdoor unit
- Secure loose objects in your yard that could become flying debris
- Install a surge protector for your HVAC system
- Schedule a pre-storm maintenance check with a professional
- Clear the area around the unit so water can drain away easily
During the Storm
- Turn off your AC at the thermostat and breaker if flooding is expected
- Never run your AC during or immediately after flooding
- Do not cover the unit while the storm is active
After the Storm
- Visually inspect the unit for damage or debris
- Remove any debris from around and inside the unit (if safe)
- Check for standing water around the unit
- Have a professional inspect your AC system before turning it back on
Common Mistakes Homeowners Make with Outdoor AC Units During Storms
- Leaving a cover on for days or weeks after the storm
- Using plastic tarps that trap moisture
- Running the AC while the unit is still wet or damaged
- Ignoring small dents or bent fins after the storm
- Waiting too long to get professional help after noticing problems
When to Call a Professional AC Repair Technician
You should contact a professional AC repair company if:
- Your AC is not cooling properly after a storm
- You hear unusual noises coming from the outdoor unit
- There is visible damage to the coils or fan
- Water entered the electrical components
- The unit was running during or right after flooding
Zees Air Conditioning Inc. provides expert AC repair in New Orleans and surrounding areas. Our technicians are trained to inspect storm-damaged systems and restore them safely and efficiently.
Need AC repair after a storm in New Orleans? Call (504) 912-0490 or schedule service here: Zees Air Conditioning Inc. AC repair services in New Orleans.
We offer same-day service and emergency AC repair throughout New Orleans, Gretna, Harvey, Metairie, and the Westbank.
What Professional Post-Storm AC Inspection Includes
When our technicians inspect your system after a storm, they typically:
- Check for physical damage to the condenser coils and fan
- Inspect electrical components for water damage or corrosion
- Clean debris from the unit
- Check refrigerant levels and look for leaks
- Test the system’s performance and efficiency
- Recommend repairs or surge protection upgrades if needed
Protect Your AC the Smart Way This Storm Season
Covering your outdoor AC unit during storm season is generally not recommended and can actually cause more harm than good. The best protection comes from proper preparation, professional maintenance, and smart post-storm care.
If your air conditioner has been affected by recent storms or you want expert advice on protecting your system, don’t hesitate to reach out.
Contact the trusted team at Zees Air Conditioning Inc. for professional AC repair in New Orleans and storm preparedness guidance.
Call (504) 912-0490 today or book your service through our AC repair page: Zees Air Conditioning Inc. AC repair services in New Orleans.
We proudly serve New Orleans, Gretna, Harvey, Metairie, Marrero, and the entire Greater New Orleans area with fast, reliable service.
Stay safe and keep your home cool this hurricane season.
FAQs
Only in very specific situations, such as when the unit will not be used for an extended period and you use a breathable, properly fitted cover designed for AC units. Even then, it should be removed before any chance of running the system.
If you choose to use a cover, select a breathable fabric cover made specifically for AC units. Avoid plastic tarps.
No. Wait until the unit is dry and has been inspected, especially if there was flooding or power surges.
No. Covers do not prevent flooding. The best protection against flooding is proper drainage and elevating the unit if possible.
It’s a good idea to have a professional inspection at the beginning of hurricane season (June) and after any major storm.
