aging unit

AC Aging Unit: Maintenance Tips and Tricks

As a Sarasota homeowner, routine maintenance on your AC aging unit is important. It will help improve its performance, lifespan, indoor air quality, and energy efficiency. You depend on your aging AC system to keep you comfortable and cozy throughout the summer. You can perform a lot of things to maintain your old air conditioner in top condition. By learning these maintenance tips and tricks, you can better take care of your old AC, potentially save on energy bills, and add years to its lifespan.

Common Signs of Aging AC Unit

An aging air conditioning (AC) unit may exhibit several signs indicating that it requires attention or replacement. If you notice any of these signs, it’s essential to have your AC aging unit inspected by a professional HVAC technician to determine the best course of action, whether it’s repair or replacement. Regular maintenance and timely repairs can help prolong your AC unit’s years and ensure optimal performance.

  • Reduced Cooling Efficiency — One of the most noticeable signs of an aging AC unit is a decline in its cooling performance. If you find that your AC is struggling to maintain the desired temperature despite running constantly, it could be a sign that the unit is aging and losing its efficiency.
  • Increased Energy Bills — As an AC unit ages, it tends to become less efficient, resulting in higher energy consumption. If you notice a sudden spike in your energy bills without any significant change in usage patterns, it may indicate that your AC unit is aging and not operating as efficiently as it used to.
  • Strange Noises — Unusual sounds coming from your AC unit, such as grinding, squealing, rattling, or banging noises, are often signs of mechanical wear and tear. These noises may indicate that certain components within the unit, such as the fan or compressor, are deteriorating due to age.
  • Visible Signs of Wear and Tear — Take a close look at your AC unit for any visible signs of wear and tear, such as rust, corrosion, leaks, or damaged components. These physical indicators can suggest that the unit is aging and may need to be replaced soon.

7 AC Aging Unit Maintenance Tips

Proper maintenance of your air conditioning (AC) system is crucial to ensure it runs efficiently and keeps your home cool during hot weather. Here are seven AC maintenance tips to help you achieve cooling comfort and cost savings.

Regular Filter Replacement/Cleaning

Dirty or clogged air filters can restrict airflow and reduce the efficiency of your AC system. Check the filters monthly and replace them if they’re dirty or clean them if they’re reusable. This helps maintain good indoor air quality and ensures proper airflow.

Clean the Outdoor Unit

Dirt, leaves, and debris can accumulate in the outdoor condenser unit over time, obstructing airflow and hindering the system’s performance. To allow proper airflow and heat exchange, regularly clean the exterior of the unit and remove any debris around it.

Inspect and Clean Air Ducts

Inspect the air ducts for leaks, cracks, or signs of damage that could compromise the efficiency of your AC system. Additionally, have the air ducts professionally cleaned periodically to remove dust, debris, and allergens, ensuring optimal airflow and indoor air quality.

Check and Seal Leaks in Ductwork

Leaky ducts can waste energy and reduce the effectiveness of your AC system. Inspect ductwork for leaks or gaps and seal them using duct sealant or metal tape to prevent air loss and improve energy efficiency.

Schedule Professional Maintenance

Regular professional maintenance by an HVAC technician is essential for keeping your AC system in top condition. Schedule annual or bi-annual maintenance visits to have your system inspected, cleaned, and tuned up, which can help prevent potential issues and prolong the lifespan of your unit.

Keep Vents and Registers Clear

Ensure that air vents and registers are not blocked by furniture, curtains, or other obstructions. Blocked vents can disrupt airflow and prevent proper cooling distribution throughout your home. Keep these areas clear to maximize airflow and cooling efficiency.

Programmable Thermostat Optimization

Utilize a programmable thermostat to set temperature schedules that align with your daily routine. Adjusting the temperature settings when you’re away or asleep can help reduce energy consumption and lower utility bills while still maintaining comfort when needed.

How Much Does AC Aging Unit Maintenance Costs

As air conditioning units age, repair and maintenance costs can gradually increase due to wear and tear on components. However, older systems may require more frequent repairs or part replacements, adding to maintenance expenses. Complex repairs like a compressor or coil replacements can be particularly costly. 

The cost of maintaining an aging AC unit varies depending on factors such as the unit’s condition and required repairs. Routine maintenance, like filter replacements and cleaning, may cost around $100-$300 annually. However, more extensive repairs or component replacements can range from $300 to $1,000 or more. Proactive maintenance, coupled with periodic assessments by HVAC professionals, can help manage AC aging unit maintenance costs and ensure reliable cooling performance.

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Frequently Asked Questions

How often should I schedule maintenance for my aging AC unit?

It’s recommended that aging AC units be scheduled for maintenance at least once a year to ensure optimal performance and catch any potential issues early on.

Can I perform maintenance on my aging AC unit myself, or should I hire a professional?

While some basic maintenance tasks like filter replacement can be done by homeowners, it’s advisable to hire a professional HVAC technician for comprehensive inspections and repairs to ensure safety and effectiveness.

Is it worth investing in maintenance for an aging AC unit, or should I consider replacing it?

Regular maintenance can help prolong the lifespan of an aging AC unit and prevent costly breakdowns. However, if repair costs become too frequent or expensive, it may be more cost-effective to invest in a new, energy-efficient unit.

What steps can I take to extend the lifespan of my aging AC unit?

Regular maintenance, including filter replacements, cleaning, and professional inspections, is essential for prolonging the lifespan of an aging AC unit. Additionally, ensuring proper airflow, sealing duct leaks, and using a programmable thermostat can help optimize efficiency and reduce strain on the system.


Make sure your air conditioner unit is inspected by an HVAC contractor at least twice a year. Your HVAC contractor can offer repairs and can spot problems before they get worse. For additional information on how to maintain the functionality of an aging unit, contact Tropic Air Conditioning. We have many tips and advice to help you maintain the condition of your air conditioner.