Protecting Your Outdoor HVAC Unit: When and Why You Should Use a Cover

Your outdoor HVAC unit is designed to withstand the elements, but in certain situations, using a cover can provide extra protection and extend its lifespan. However, improper covering can also lead to issues like moisture buildup and mold growth. In this guide, we’ll explore when and why you should use a cover to protect your HVAC system.

When Should You Cover Your Outdoor HVAC Unit?

1. During Fall and Winter – If you live in an area with heavy snowfall, covering your unit can prevent ice accumulation and protect it from falling debris like leaves and twigs.
2. Before Major Storms – Covering the unit before a severe storm can help prevent damage from high winds, flying debris, and excessive rainfall.
3. When Not in Use for Extended Periods – If your air conditioner won’t be used for months, a breathable cover can keep dirt and debris from accumulating inside.

When Not to Cover Your HVAC Unit

1. During Regular Operation – Covering an in-use unit can restrict airflow, leading to overheating and reduced efficiency.
2. In Humid Climates – Trapping moisture inside the unit can encourage mold and rust, which may cause more harm than good.
3. With a Completely Airtight Cover – Using a plastic or non-breathable cover can trap condensation, leading to internal damage.

Best Practices for Covering Your HVAC Unit

• Use a Breathable Cover – Opt for covers specifically designed for HVAC units that allow airflow while protecting against debris.
• Leave Space for Air Circulation – Ensure the cover is not fully sealed to prevent moisture retention.
• Remove Snow and Ice Buildup – If covering the unit during winter, periodically check and remove excess snow or ice.

Final Thoughts

Covering your outdoor HVAC unit can be beneficial in specific situations, but it’s essential to do so correctly to avoid unintended damage. If you need professional advice on HVAC maintenance and protection, contact Elite Plumbing, Heating & Air Conditioning today.