What Causes an AC System to Ice Up?
Matt Lester • August 27, 2024

What Causes an AC System to Ice Up?

Summertime in New York is hot and humid. You might be surprised to learn that your AC system can ice up even when outdoor temperatures are soaring. What causes this, and how can you quickly restore your home's comfort? Our team of experts at Zoom Heating & Cooling, with our exceptional knowledge and experience, is here to provide the best results for your AC repair needs in Rochester, NY, and the surrounding areas!

Reduced Airflow

Reduced airflow is a common issue and one of the biggest reasons for an AC system icing up. Your unit works hard to circulate cool air and maintain consistent temperatures inside your house. The refrigerant flowing throughout your air conditioning system helps to remove the heat from within your home and carry it outdoors.

However, a plugged filter or coil strains the unit by reducing the necessary airflow to keep everything working efficiently. This causes the temperature of the refrigerant to drop and allows humidity to create moisture on the coil, which eventually freezes. You're not alone in facing this issue. With over 20 years of industry experience, Zoom Heating & Cooling has seen and resolved this issue numerous times, and we're here to help you, too!

Refrigerant Leaks

On that note, refrigerant leaks are another culprit behind your AC system becoming iced up. Every unit has a set amount of refrigerant, also known as "Freon" or "Puron," required to maintain proper functioning. The refrigerant, or "charge," levels remain the same throughout the life of your air conditioner unless there is a leak.

If a leak occurs, your AC has to work harder to compensate for the loss. Addressing this issue promptly to avoid further damage is crucial. Don't wait; contact the highly trained Zoom Heating & Cooling team immediately for AC repair in Rochester, NY. We provide free next-business-day estimates and the top comfort system brands on the market, ensuring your peace of mind and relief. 

The Thermostat Set Point Is Too Low

On average, keeping your thermostat's set point at 67°F or above is recommended for optimal performance. If you prefer cooler temperatures in your home, knowing your AC system's limits and exercising caution is crucial. By understanding and maintaining the recommended set point, you can prevent the refrigerant pressure from dropping too low and allowing ice to form, thereby avoiding potential AC system issues.

The Blower Fan is Broken

With routine maintenance, your HVAC system will maintain peak performance for years. Like any large appliance, regular wear and tear eventually causes internal parts to wear out. Your AC's blower fan is essential to having proper airflow throughout your house. If your system is iced up, it could be a red flag that your blower fan is broken.

Help is Here

If your AC is iced up, don't worry! Zoom Heating & Cooling is here to help. As a local company, we proudly serve our neighbors in Rochester, NY, and the surrounding areas. Our customers enjoy competitive pricing, 0% financing available on installations, and 24/7 fast and reliable service. Call us today at (585) 596-8300 to schedule your free estimate!

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