How to Tell If Your AC Unit Is Undersized

Identifying whether your air conditioning unit is appropriately sized for your home is essential for maintaining comfort, especially during the sweltering summer months. An undersized AC can lead to a range of issues, including inefficient cooling, elevated energy usage, and added strain on your HVAC system, potentially shortening its lifespan. Below are 7 signs that may indicate your AC unit is too small for your home, along with tips on what to do next.

1. Ineffective Cooling Performance

One of the clearest signs of an undersized AC unit is its inability to cool your home adequately. If your interior stays uncomfortably warm despite the AC running non-stop, the unit likely lacks the necessary cooling capacity, measured in British Thermal Units (BTUs), for your home’s size and conditions.

2. Inconsistent Room Temperatures

If some rooms feel cool while others remain warm, your AC may not be powerful enough to distribute air evenly throughout your home. Uneven temperatures are a common indicator of an AC unit that doesn’t have the capacity required for the entire space.

3. Constant Operation Without Cycling Off

An AC unit that runs continuously without cycling off is often too small for the home. Properly sized systems turn on and off periodically once the desired temperature is reached. Constant operation is a sign that the unit is struggling to keep up with the cooling demands.

4. Elevated Energy Bills

Noticeably high energy bills during the summer months can be a red flag. An undersized AC has to work harder and run longer to try to cool your home, resulting in increased energy consumption and utility costs.

5. High Humidity Levels Inside

AC units also help control humidity. If your home feels muggy or damp, it could be because your unit is not large enough to effectively dehumidify the air. This leads to uncomfortable indoor conditions, even if the temperature appears to be in the normal range.

6. Persistent Noise During Operation

Undersized systems may generate more noise as they struggle to perform. You might notice louder sounds from the unit itself or from ductwork due to increased airflow pressure and overexertion of the system.

7. Frequent Repairs and Maintenance Issues

If you’re regularly calling for service or facing repeated breakdowns, your AC unit may be under too much stress. Constant strain on a system that’s not designed for your home’s load can cause early wear and tear, leading to more frequent repairs.

Contact Perfect Degree HVAC Today

If you’ve noticed any of these warning signs and suspect your AC unit is undersized for your Drexel Hill, PA home, the team at Perfect Degree HVAC can help. Our experienced professionals will conduct a detailed load calculation to assess your home’s cooling needs and recommend a right-sized system that delivers improved performance, greater energy efficiency, and enhanced comfort. Call us at (610) 579-1984 or fill out our online form to schedule a consultation today.

Jennifer Woodruff

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Jennifer Woodruff

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