Preparing Your AC Unit for Winter Storage
As the warmth of summer fades and autumn ushers in colder days, your air conditioning unit enters its annual time out. But setting it aside doesn’t mean you should simply ignore it—taking some thoughtful winterization steps can make a big difference when spring arrives. Here’s how to prepare your AC for winter storage in a way that protects your investment and ensures a smoother restart next season.
Power Down and Clean Thoroughly
Begin with a simple but crucial step—turn off the power to your outdoor condenser unit. Cutting electricity ensures the unit won’t accidentally come on during warm fall days, which could cause internal condensation or damage.
Once powered down, give the unit a gentle clean. Fall can leave behind leaves, twigs, dust, or insect debris, all of which can compromise next summer’s cooling power. Rinse the fins and coils using a garden hose on a low-pressure setting or brush away debris carefully so as not to damage delicate components.
Protect Exposed Parts and Surfaces
Exposed refrigerant lines and pipes are especially vulnerable in cold weather. Wrapping them securely with foam or rubber insulation helps prevent damage caused by freezing or frost.
Additionally, applying a layer of car wax to the exterior surfaces, particularly metal panels, can add a water-resistant shield—helping ward off rust or corrosion during winter’s damp conditions.
To Cover—or Not to Cover?
For years it was common advice to wrap AC units completely in plastic or fabric covers. However, modern HVAC experts now largely agree that heavy coverings can do more harm than good. Moisture trapped inside can lead to rust, mold growth, or even invite unwanted critters seeking cozy shelter.
That said, a partial, breathable covering over the top—like a vented, weather-resistant screen or even a simple piece of plywood—can protect against falling leaves, heavy snow, or salt in climates where road treatment chemicals pose a corrosion risk.
Watch the Weather
Even during winter, staying aware of your AC’s surroundings matters. If snow builds up around the unit, gently brush it away to maintain adequate airflow. But in most cases, simply leaving the unit uncovered and performing occasional checks for debris or nesting critters is enough.
Be Ready for Spring
By winter’s end, your unit should essentially be on standby—cleaned, powered down, and shielded from harsh elements. Come spring, flip the power back on, clear any remaining debris, and have your system professionally inspected and serviced. Regular annual maintenance helps ensure your AC is ready to cool efficiently and lasts much longer.
Final Thoughts for TOBIN HVAC Customers
Preparing your AC unit for winter doesn’t have to be complicated. Just a few mindful steps—shutting off power, cleaning, insulating, and providing thoughtful protection—can preserve your system’s health through the cold months.
When it comes time to bring it back to life next spring, TOBIN HVAC is here for you. Our skilled technicians offer comprehensive seasonal inspections and tune-ups that help your air conditioner perform at its best. Let us help ensure smooth, reliable cooling—year after year.
TOBIN HVAC is one of the Most Trusted Names in Commercial HVAC in the greater Denver area for over 70 years. At TOBIN HVAC, we believe that true comfort comes without compromise. Our commitment to excellence means we never cut corners—whether it’s the quality of our products, the expertise of our technicians, or the care we put into every service. Contact us today for a free quote.
