5 Signs That Your Air-Handling Unit Needs Changing

An air-handling unit (AHU) is a critical component of HVAC systems that is responsible for circulating and conditioning air in a building. Regular maintenance and monitoring are essential to ensure the AHU functions properly. Here are five signs that your air-handling unit may need to be replaced:

1. **Age of the Unit**: AHUs have a limited lifespan, typically ranging from 10 to 20 years depending on the quality of the unit and how well it has been maintained. If your AHU is approaching or has exceeded its expected lifespan, it may be time to consider replacing it. Older units are more prone to breakdowns and may be less energy-efficient.

2. **Frequent Breakdowns**: If your AHU requires frequent repairs or experiences recurring issues, it could be a sign that the unit is nearing the end of its serviceable life. Continuous breakdowns can result in higher maintenance costs and discomfort for building occupants.

3. **Inefficient Performance**: An aging AHU may struggle to maintain consistent indoor temperatures and air quality. If you notice that your HVAC system is no longer providing efficient heating or cooling, or if energy bills have increased significantly, it might be due to the declining performance of the AHU.

4. **Excessive Noise or Vibration**: Unusual noises, vibrations, or rattling coming from the AHU can indicate mechanical problems, worn-out components, or imbalanced parts. If these issues persist despite repairs, it could be a sign that the AHU is deteriorating and needs replacement.

5. **Rising Maintenance Costs**: As AHUs age, their maintenance requirements tend to increase. If you find yourself spending more on frequent repairs, replacement parts, and service calls, it may be more cost-effective in the long run to invest in a new AHU that is more reliable and efficient.

Before making a decision to replace the AHU, it's a good idea to consult with HVAC professionals. They can assess the condition of the unit, diagnose any issues, and provide recommendations based on your specific situation. In some cases, it might be possible to perform certain repairs or upgrades to extend the life of the AHU, but if the unit is consistently underperforming and causing discomfort or increased costs, replacement may be the best course of action.

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