4 Signs Your HVAC System Is Disproportionate to Your Home

13 Jul by Will Kruse

4 Signs Your HVAC System Is Disproportionate to Your Home

HVAC systems are essential in ensuring that indoor environments are comfortable and healthy for occupants. They regulate temperature, humidity, and air quality. HVAC systems consist of an outdoor unit that houses the compressor and condenser and an indoor unit that houses the evaporator coil and blower. These units work together to ensure your home is heated or cooled appropriately.

To this end, an appropriately sized HVAC system ensures your home is comfortable and healthy. An HVAC system that is too small for your home will struggle to keep up with the demand, leading to poor indoor air quality, uncomfortable temperatures, and higher energy bills. On the other hand, an HVAC system that is too large for your home will cycle on and off frequently, leading to wear and tear on the system and higher energy bills.

To know if your HVAC system is not proportionate to your home’s size, here are some signs to look out for:

#1 – Frequent Short Cycling

Short cycling is when the HVAC system turns on and off frequently without completing a full cooling or heating cycle. An oversized HVAC system can cause this. When an HVAC system is too large for a home, it cools or heats the space quickly and then shuts off. However, because the system is oversized, it has not effectively removed the humidity from the air. As a result, the home quickly becomes uncomfortable again, and the system kicks back on. This cycle repeats frequently, leading to wasted energy and increased wear and tear on the system.

On the other hand, a smaller HVAC system is under powered for the home’s size. In this case, the system may struggle to cool or heat the space adequately, causing it to run longer than necessary. This can also result in frequent on-and-off cycling as the system tries to maintain the desired temperature.

#2 – High Humidity Levels

As mentioned, when an HVAC system is too large for a space, it cools or heats the air quickly without effectively removing the humidity. This can lead to a damp and uncomfortable environment and potential issues with mold and mildew growth. Conversely, inadequate ventilation or improper home sealing can contribute to high humidity levels. Moisture from cooking, showering, and breathing can accumulate without proper ventilation. If the home is not well-sealed, humid outdoor air can enter the space and increase humidity.

#3 – The Space Fails to Attain Desired Temperatures

If an HVAC system is too small or large for a space, it will struggle to reach and maintain the desired temperatures. An undersized system will work harder to cool or heat the space, resulting in longer run times and inconsistent temperatures. On the other hand, an oversized system may cool or heat the space too quickly, leading to short cycling and temperature fluctuations. In both cases, the system may be unable to regulate the temperature, leaving the occupants uncomfortable effectively.

#4 – High Energy Bills

Any HVAC system not properly sized or functioning efficiently can result in high energy bills. An undersized system will have to work harder and run for longer periods of time to reach the desired temperature, leading to increased energy consumption. On the other hand, an oversized system may cool or heat the space too quickly, causing it to cycle on and off frequently, which also uses more energy. Additionally, if the HVAC system is not properly maintained and serviced, it may not operate at peak efficiency, increasing energy costs.

What Can You Do?

To avoid these issues, it is important to size your HVAC system for your space properly. This can be done by consulting with a professional HVAC contractor who can calculate your specific space’s heating and cooling load requirements. They will consider factors such as square footage, insulation, windows, and climate to determine the appropriate size of the system.

Regular maintenance and servicing of your HVAC system is also crucial to ensure it operates efficiently. This includes cleaning or replacing air filters regularly, checking and sealing ductwork for leaks, and scheduling routine inspections and tune-ups by a licensed technician.


An HVAC system is an indispensable part of any home or commercial building, providing comfort and maintaining indoor air quality. For this reason, you must always get an HVAC system that is properly sized for your space and regularly maintained to ensure optimal performance. This way, you can avoid common issues and enjoy the benefits of a reliable and efficient HVAC system.

If you’re looking for residential HVAC companies in Berkeley, L.J. Kruse Co. can help you! Our professional contractors will ensure your home’s HVAC system works in optimal conditions for maximum efficiency. Request an appointment today!

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