AC Maintenance

Normally, an AC system needs to be maintained at least once every year. Prior to the beginning of the cooling season, usually in the spring, is the optimal time for servicing. Cleaning or replacing air filters, inspecting and cleaning coils, checking refrigerant levels, lubricating moving parts, and making sure all parts are in good operating condition are all duties that are part of routine annual maintenance. However, other homeowners choose bi-annual maintenance, which may include a review in the fall before the start of the heating season, especially in areas where HVAC systems are used all year round. Regular maintenance promotes efficiency, increases lifespan, and reduces the likelihood of expensive breakdowns.

During AC maintenance, many companies go beyond just inspecting the basics. While they’ll certainly check and service key components like:

1. Air filters – ensuring they’re clean or replaced for proper airflow.
2. Evaporator and condenser coils – keeping them clean for efficiency.
3. Thermostat settings – verifying accuracy and function.
4. Refrigerant levels – checking and recharging as needed.
5. Electrical connections – tightening for safety.
6. Blower motor and fan – inspecting for wear.
7. Condensate drain – clearing to prevent clogs.

Additionally, they may perform a more comprehensive assessment, including advanced diagnostics, system calibration, and even checking for potential future issues.

Regular AC maintenance between professional tune-ups helps extend the lifespan of your system, improve efficiency, and prevent breakdowns. Here are key steps homeowners can take:

1. Change or Clean Air Filters Regularly

✅ Replace disposable filters every 1-3 months (depending on usage & filter type).
✅ If using a reusable filter, clean it monthly to prevent airflow restrictions.
✅ A clogged filter makes your AC work harder, increasing energy use.

2. Keep the Outdoor Unit Clean & Clear

✅ Remove debris (leaves, dirt, grass clippings) from around the condenser unit.
✅ Keep at least 2 feet of clearance around the unit for proper airflow.
✅ Hose down the coils gently to remove dirt buildup.

3. Check & Clean Air Vents and Registers

✅ Vacuum dust and debris from supply and return vents to improve airflow.
✅ Ensure furniture, curtains, or rugs aren’t blocking vents.
✅ Keep vents fully open for balanced air distribution.

4. Adjust Your Thermostat Settings

✅ Use a programmable or smart thermostat to optimize cooling schedules.
✅ Set the temperature higher when you’re away to reduce strain on the system.
✅ Avoid frequent thermostat adjustments, which cause excessive cycling.

5. Inspect & Maintain the Drain Line

✅ Check the condensate drain line for clogs, which can cause water leaks.
✅ Pour a cup of vinegar or bleach into the drain line every few months to prevent algae buildup.

6. Listen for Unusual Noises & Check Performance

✅ Loud buzzing, rattling, or screeching sounds could indicate an issue.
✅ Uneven cooling or weak airflow may mean a duct or filter problem.
✅ If anything seems off, schedule professional service ASAP to avoid costly repairs.

Conclusion

By changing filters, keeping the unit clean, maintaining airflow, optimizing thermostat use, and checking for minor issues, homeowners can keep their AC running efficiently between tune-ups. However, annual professional maintenance is still essential for catching hidden issues and ensuring peak performance.

To prepare your AC for the first New England heatwave, take proactive steps in early spring. First, turn on your AC for a test run. Observe if it cools effectively and listen for any unusual noises like rattling or grinding. Check for weak airflow from vents. If you notice any issues, promptly schedule professional maintenance.

• Change your air filter to ensure optimal airflow and efficiency.  
• Clear any debris like leaves or branches from around the outdoor unit to allow for proper ventilation. 
• Ensure indoor vents are unobstructed by furniture or curtains.   

By addressing potential problems early, you can avoid discomfort and costly repairs during the peak summer heat. Don't wait until it's sweltering; a little preparation goes a long way!

Yes, several pests common in New England can affect your outdoor AC unit. Rodents, such as mice and squirrels, may seek shelter inside, potentially chewing wires and damaging components. Insects, including ants and wasps, can build nests within the unit, obstructing airflow and interfering with its operation. Spiders can also create webs that trap dust and debris, reducing efficiency.  

• Ensure the area around your unit is clear of vegetation and debris that can attract pests.  
• Inspect the unit regularly for any signs of infestation. 
• Consider professional HVAC maintenance, as technicians can identify and address potential pest issues and recommend preventative measures. Addressing these threats proactively helps maintain your AC's performance and longevity.

Yes, the proximity to trees and foliage, common in many New England yards, does necessitate some special attention during AC maintenance. Falling leaves, pine needles, pollen, and other organic debris can easily accumulate around the outdoor condenser unit. This buildup can significantly restrict airflow, forcing the unit to work harder and less efficiently, potentially leading to overheating and increased energy consumption.  

• Regularly clear the area around your outdoor AC unit, ensuring at least two feet of clear space.   
• Trim any overhanging branches that could drop debris directly onto the unit. 
• Consider using a protective cover during the fall and early spring when leaf fall is heaviest, but remember to remove it when the AC is in use. Professional maintenance can also include cleaning the exterior and interior components of the unit to remove any accumulated organic matter, ensuring optimal performance.